Application

Electrical Parameter Testing

Verifying voltage, current, power, power factor and frequency of an electrical product against its specification.

Why this measurement is difficult to get right

Electrical parameter testing establishes what a device actually draws and delivers, and it underpins incoming inspection, design verification, type testing and end-of-line pass-fail decisions. In every one of those contexts the accuracy the instrument needs is set by the tolerance being judged, not by the instrument catalogue. The measuring chain has to be several times better than the limit it is policing, or the test cannot distinguish a marginal unit from a good one.

The measurement itself is rarely the difficult part. The ambiguity comes from deciding which quantity to record and under which load condition. A supply that passes at full load can fail at the low end of the current range, and a power factor quoted at one operating point says nothing about another. Settling those two questions before choosing an instrument prevents the common outcome of a meter that measures everything except the one figure the test report requires.

A third decision sits behind both: whether the reading has to be kept. A number read off a display and written on a traveller is a different requirement from a figure that must be exported into a test record and kept for years. Recording and communication are optional on many instruments, so they have to be specified rather than assumed.

What has to be measured

Input voltage and current at the specified operating point, including the low end of the current range.
Active power in watts, plus apparent and reactive power where the load is not purely resistive.
Power factor, which indicates how far the load departs from unity.
Frequency, and energy accumulation where consumption over time is the subject of the test.
The load condition the reading was taken under, because values from two different load points cannot be compared.

Which instrument measures what

Measurement	What the reading has to establish	Instruments commonly specified
Voltage, current, power and power factor	Whether the device meets its declared figures at the operating point the standard or the drawing specifies, including near the bottom of the range	Digital power meters and electrical parameter testers
The same quantities where a wide tolerance is being judged	Routine checks fast enough to be repeated across many units, where a handheld reading is sufficient	Digital multimeters
Current without breaking the circuit	Loading that must not be interrupted, or a check on equipment already installed and energised	Clamp meters
Resistance, capacitance and inductance	Component or winding values that set the behaviour of the circuit under test	LCR meters
Insulation integrity	Whether the barrier between live parts and earth still holds after assembly or a period in service	Insulation resistance testers
Frequency and phase relationship	Stability of the supply, and the phase angle that the power figure itself depends on	Frequency counters and phase meters

The family is chosen from the quantity to be recorded, not from the range of the instrument.

Narrowing the choice for a test bench

Write down the tolerance being judged and name the document it comes from - a drawing, a type-test specification or a customer schedule.
Choose the instrument accuracy class so that its measurement uncertainty is a fraction of that tolerance, not a match for it.
List the quantities that must appear in the record. Power factor and energy accumulation are options on many instruments, not defaults.
Establish the waveform. On switched-mode and phase-controlled loads a true-RMS instrument is required, because a mean-sensing meter reports a figure that does not correspond to the real heating effect.
Check the resolution at the low end of the range, not only the maximum range. Most low-power tests are decided by a reading taken near the bottom of the span.
Confirm the standard and accuracy class behind the instrument, because the tolerance quoted in the report has to be traceable to something.
Decide whether readings must be logged or exported, which determines whether a communication interface is mandatory.
Only then look at the fixture, the wiring and the range-change method, because those affect repeatability rather than the value itself.

Where this application ends and the next begins

Adjacent application	What separates it from electrical parameter testing
Power supply testing	That work is decided at the extremes of one range rather than at a single operating point, because standby consumption and full-load efficiency are reported from the same instrument.
Motor & drive testing	Here the waveform is a switched output whose frequency changes with speed, so measurement bandwidth becomes a deciding factor that never arises on a steady supply.
Energy efficiency testing	The result is a ratio accumulated over a complete operating cycle, which puts the emphasis on accuracy class and calibration interval rather than on the instantaneous reading.
Industrial test bench & calibration	A test bench generates a known value and checks what the device under test makes of it, which is the reverse direction from measuring a device in operation.
Product quality inspection	Inspection judges a physical item against a drawing tolerance, whereas this work judges electrical behaviour against a declared performance figure.

What to send with the enquiry

Type and rating of the device under test.
The tolerance being judged, and the document it is taken from.
The quantities that must appear in the record.
The waveform of the supply and the load - sinusoidal, switched or phase controlled.
The lowest value that has to be resolved on the current range.
Number of phases and the supply arrangement at the test position.
Whether readings must be logged or exported, and to which interface.
Whether the test is taken at a bench or on installed equipment.
Quantity required and the date it has to be in use.
Whether a calibration or inspection document has to accompany the instrument.

Published products

Instruments for electrical parameter testing

Grey DIN-rail AC voltage transmitter with a screw terminal block and a label reading AC 0-400V input and 4-20 mA output

Signal Converters

AC Current and Voltage Transducer

A DIN-rail current and voltage transducer for AC or DC circuits, with 4-20 mA, 0-10 V, RS-485 or CAN output, split-core and through-bore inputs to 3000 A, and 0.2 to 0.5 class accuracy.

Input: AC current from 0-5 A to 0-3000 A, AC voltage to 500 V, DC current and voltage, with split-core and through-bore forms
Output: 4-20 mA, 0-20 mA, 0-10 V, 0-5 V, RS-485/Modbus or CAN
Accuracy: 0.2, 0.3 or 0.5 class, with plus or minus 0.1 % and 0.2 % of full scale on some forms
Supply: 24 V DC, 220 V AC or 12 V DC depending on the form

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Clamp meter held in one hand by its body, with the orange transformer jaw at the top, a rotary function selector and three function keys below the display, and the two test sockets along the bottom face

3266TA (3 models) · Clamp Meters

AC/DC True-RMS Clamp Meter

Clamp meter range reading current through a 25 mm jaw without breaking the circuit, from an AC-only model up to an AC/DC instrument with true-RMS conversion, 6000 counts and a 100 mF capacitance range.

Jaw opening: 25 mm
AC current: 1 mA to 600 A on the two AC-only models; 10 mA to 600 A on the AC/DC model
DC current: 10 mA to 600 A on the AC/DC model only
AC and DC voltage: AC 1 mV to 600 V; DC 0.1 mV to 600 V

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Compact programmable safety tester shown from the front with the two-line LCD at the upper left, a row of function keys beneath it and the test terminals along the lower right

7110 (8 models) · Electrical Safety Testers

Compact AC/DC Withstand Voltage and Insulation Tester

Compact programmable safety tester with 5 kV AC and 6 kV DC withstand voltage, insulation resistance to 9999 MΩ, five stored programs and PLC remote control.

AC output: 0 to 5.00 kV, 12 mA
DC output: 0 to 6.00 kV, 5 mA, on four of the eight models
Frequency: 50 or 60 Hz, selectable
Leakage limits: 0.10 to 12.00 mA AC and 0.02 to 5.00 mA DC, upper and lower set independently

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Benchtop ground bond tester seen from the front, with a red reset button and a green test button at the left, a two-line LCD above four setup keys at the centre and current and return terminals at the right

7305 (3 models) · Electrical Safety Testers

Programmable Ground Bond Resistance Tester

Programmable ground bond tester with a regulated AC test current, settable resistance limits, self-zero lead correction and PLC remote control in three current classes.

Output current: 3 to 33 A on 7305, 1 to 40 A on 7314, 1 to 60 A on 7316
Maximum output voltage: 6 V on 7305, 8 V on 7314, 12 V on 7316
Resistance range: 0 to 510 mΩ on 7305; 0 to 600 mΩ on 7314 and 7316
Frequency: 50 or 60 Hz, selectable, ±100 ppm

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Benchtop safety compliance analyser seen from the front, with a backlit dot matrix display at the upper centre, a red reset button and a green test button at the left, function keys and a numeric keypad below the display, and current and return terminals at the right

7440 (4 models) · Electrical Safety Testers

Four-in-One Electrical Safety Compliance Tester

Bench safety compliance analyser combining AC and DC withstand, insulation resistance and, on the top model, ground bond testing, with stored programs and a matrix scanner interface.

AC withstand: 0 to 5 kV, up to 40 mA
DC withstand: 0 to 6 kV, up to 9999 μA
Insulation resistance: 100 to 1000 V DC, 1 to 9999 MΩ
Ground bond: 3 to 40 A, 0 to 600 mΩ, on 7440 only

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Benchtop high voltage tester seen from the front, with a backlit two-line display at the upper centre, a red reset button and a green test button at the left, function keys and a numeric keypad beneath the display, and high voltage and return terminals at the right

7460 (2 models) · Electrical Safety Testers

10 kV Programmable Withstand Voltage Tester

Programmable high voltage withstand tester in an alternating and a direct version, with a regulated output, fifty linked program groups, arc detection and remote control.

AC output: 0.00 to 10.00 kV at 10 mA, on 7460
DC output: 0.00 to 10.00 kV at 5000 μA, on 7462
Voltage resolution: 0.01 kV
Leakage limits, AC: Upper 0 to 10.0 mA, lower 0.1 to 10.0 mA

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Bench insulation tester in a white case seen from the front, with a two-line liquid crystal display in the centre showing a set voltage and a resistance limit, a red reset button and a green test button at the left, four small keys below the display and a red high-voltage terminal beside a black return terminal at the right

8205 (2 models) · Insulation Resistance Testers

Insulation Resistance and Battery Short-Circuit Tester

Bench insulation tester with a 100 to 1000 V direct output, resistance measurement to 9999 MΩ, programmable rise and test times, a PLC remote interface and automatic discharge.

Output voltage: 100 to 1000 V DC, 1 V resolution, ripple below 2%
Resistance range: 1 MΩ to 9999 MΩ, automatically selected
Resistance accuracy: ±(2% of setting + 2 counts) from 1 to 1000 MΩ; ±(3% + 2 counts) to 9999 MΩ
Rise time: 1.0 to 999.9 s in the parameter table; 0.1 to 999.9 s in the description, both carried

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A rectangular panel meter with a black bezel, showing a two-hundred-and-thirty volt reading in red digits and a current reading in blue digits, with a small split-core current transformer on a lead below it

AC-10A (3 models) · Panel Meters

Digital AC Panel Meter

Panel meter showing AC voltage and current together on two rows of digits, self-powered from the measured circuit and supplied with a split-core current transformer.

Voltage range: AC 60 to 500 V, for 220 V single-phase and 380 V three-phase circuits
Current ranges: 10 A, 50 A and 100 A versions, the 10 A version resolving to 0.01 A
Supply: No separate supply; the measured voltage powers the instrument
Display: Two rows of digits, voltage in red and current in blue, with AC symbols on the right

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Small black bench instrument with a colour display reading 0.500 V and zero current, six blue preset voltage keys beneath it, a power switch at the lower left, a round knob at the upper right and a pair of red and black output terminals on the right

B0102 (3 models) · Electrical Test Equipment

Battery Simulator for Protection Board Testing

Bidirectional battery simulator range from 5 V to 60 V, sinking and sourcing current at the same terminals, with microamp current resolution and six stored voltages.

Voltage range: 0 to 5 V on B0102; 0 to 20 V on 906B; up to 60 V on the 906 variants
Current range: 0 to 2 A on B0102; 0 to 12 A on 906B; up to 30 A on the 906 variants
Power range: 0 to 10 W on B0102; 0 to 240 W on 906B; up to 500 W on the 906 variants
Setting resolution: 1 mV on voltage, 1 mA on current

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Bench turns tester with a vertical sensing rod rising from the top cover, a green LED display across the front showing an open-circuit indication, three alarm setup keys at the lower right and a power switch at the far right

CH1201 (4 models) · LCR Meters

Coil and Winding Turns Counter with DC Resistance

Bench turns counters for coils up to 80,000 turns, with automatic ranging, no calibration before a measurement, and DC resistance measurement on the two R models.

Turns range: 1 to 80,000 on CH1201 and CH1201R; 1 to 30,000 on CH1200 and CH1200R
Turns accuracy: ±0 turns to ±1 turn at the low end, then ±0.2% or ±0.3%, and ±0.5% at the top of the 80,000 range
Turns speed: 3 readings per second on CH1201; 1.5 on CH1200
DC resistance: 100 µΩ to 200 kΩ on CH1201R; 100 µΩ to 20 kΩ on CH1200R

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Bench instrument in a blue-grey case with a 4.3 inch colour screen at the left showing two columns of voltage, current and power readings, a numeric keypad and a rotary knob in the centre, and two load terminals at the lower right

CH2711 (4 models) · Power Meters

Combined Electronic Load and Power Meter Tester

Bench instrument combining a 150 W electronic load in four modes with a true root mean square power meter, on a 4.3 inch colour screen with a numeric keypad and USB data storage.

Load ratings: 0 to 150 V at 0.1 mA to 30 A, or 0 to 500 V at 0.1 mA to 15 A, 150 W
Load modes: Constant current, constant voltage, constant resistance and constant power
Load resolution: 0.1 mV and 0.1 mA at the bottom of the scale
Meter input: 5 to 600 V AC, 10 mA to 20 A AC; 0.05 mA to 5 A AC on the two small-current models

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Rear panel of a bench power meter in a blue-grey case, with four binding posts in two pairs at the left, a wiring diagram between them, and a mains inlet, fuse holder, USB socket and a nine-pin serial socket at the right

CH2801 (5 models) · Power Meters

Single-Channel Digital Power Meter with Harmonic Analysis

Single-channel bench power meter with a 4.3 inch colour screen, true root mean square measurement, energy totals, and five models reaching 40 A or down to 0.05 mA, one with harmonic analysis.

Channels: One, single-phase
Voltage: 5 to 600 V AC, 700 V AC peak, 0.1 V resolution
Current: 10 mA to 10 A or 20 A as printed; 5 mA to 20 A, 0.05 mA to 5 A or 0.5 mA to 40 A by model
Power: 0.1 W to 12 kW; 0.001 W to 3000 W on the low-current model

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Benchtop instrument seen from the front, with a colour display at the left showing a large voltage and current readout above a row of smaller values, a keypad and direction keys at the right, a USB port on the front panel and two screw terminals marked plus and minus along the lower right

CH6311A (5 models) · Electrical Test Equipment

Ripple Voltage and Current DC Electronic Load

Five-model programmable DC load with 150 V or 500 V input, 150 W or 300 W, six load modes and 500 kHz ripple measurement with peak and valley capture.

Input voltage: 0 to 150 V on three models; 0 to 500 V on two
Input current: 0.1 mA to 15 A, 30 A or 60 A depending on model
Input power: 150 W on CH6311A; 300 W on the other four
Load modes: Constant voltage, constant current, constant power, constant resistance, short circuit and open circuit

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Off-white benchtop load seen from the front, with a colour screen at the left showing voltage, current and power readings, a numeric keypad and adjustment knob beside it, ventilation slots across the right-hand half and two pairs of input terminals with sense terminals along the bottom right

CH6321A (5 models) · Electrical Test Equipment

Programmable DC Electronic Load

Programmable DC electronic load with 150 V and 500 V inputs, 60 to 240 A, 600 to 1500 W, six load modes and battery, dynamic and OCP test functions.

Input voltage: 0 to 150 V on four models; 0 to 500 V on four models
Input current: 0.1 mA to 60 A, 120 A or 240 A depending on model
Input power: 600 W, 900 W, 1200 W or 1500 W depending on model
Load modes: Constant voltage, constant current, constant power, constant resistance, short circuit and open circuit

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Benchtop electronic load seen from the front, with a colour display at the left showing voltage, current and power readings, a numeric keypad and rotary knob beside it, a vent grille across the right half, and two pairs of binding posts marked as sense and input along the lower right

CH8811+ (6 models) · Electrical Test Equipment

High Power Programmable DC Electronic Load

Six-model programmable DC load from 600 W to 1200 W, with 120 V or 360 V input, 60 A, six load modes, battery discharge with curve plotting and remote sense.

Input voltage: 0 to 120 V on three models; 0 to 360 V on the other three
Input current: 1 mA to 60 A on all six, as printed in the parameter table
Input power: 600 W, 900 W or 1200 W, one of each in both voltage classes
Load modes: Constant voltage, constant current, constant power, constant resistance, short circuit and open circuit

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Bench instrument in a dark blue case with a colour display showing voltage and current readings at the left, a numeric keypad and a rotary knob at the right, and a pair of output terminals marked BATTERY along the lower right

CH906A (2 models) · Electrical Test Equipment

Charge and Discharge Battery Simulator

Linear battery simulator in two ranges, 20 V at 10 A or 10 V at 2 A, with automatic changeover between charge and discharge, microamp readback and a 4.3-inch touchscreen.

Discharge voltage: 0.1 to 20 V on CH906A; 0.1 to 10 V on CH906D
Discharge current: 0 to 10 A on CH906A; 0 to 2 A on CH906D
Charge voltage: 0.2 to 20 V on CH906A; 0.2 to 10 V on CH906D
Charge current: Up to 10 A below 10 V and 5 A above on CH906A; up to 2 A on CH906D

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Benchtop electronic load seen from the front, with a colour display at the left showing voltage, current and power readings against limit values, a numeric keypad and two rotary knobs at the right, soft keys along the lower edge and carrying brackets at the sides

CH9720B (4 models) · Electrical Test Equipment

Wide-Range Programmable DC Electronic Load

Four-model programmable DC electronic load with a 0 to 360 V input, 150 W or 300 W, five load modes, battery discharge testing and 500 kHz ripple measurement.

Input voltage: 0 to 360 V on all four models
Input current: 1 mA to 30 A as printed in the parameter table; 0.1 mA on the model cards
Input power: 150 W on CH9720B and CH9720BU; 300 W on CH9720C and CH9720CU
Load modes: Constant voltage, constant current, constant power, constant resistance and short circuit

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Benchtop fast-charge tester seen from the front, with a colour display at the left showing voltage, current and power readings beside a protocol panel, a numeric keypad and a rotary knob at the right, and three load terminals along the lower edge

CH9721P+ (5 models) · Electrical Test Equipment

Fast Charge Protocol and Electronic Load Tester

Four-model series combining a programmable DC load with fast-charge protocol detection, 500 kHz sampling, ripple measurement and over-current protection testing.

Input power: 150 W on the three 60 V and 150 V models; 300 W on the largest
Input voltage: 0 to 60 V, or 0 to 150 V on the two higher models
Input current: 0.1 mA to 6 A, or 0.1 mA to 30 A on the two higher models
Accuracy: ±(0.05% + 0.03% FS) on voltage and current

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Multi-channel resistance scanner seen from the front, with a colour display showing eight channel readings in two columns, a keypad at the right and a four-terminal socket at the lower right

CXT2518-4 (5 models) · Electrical Test Equipment

Multi-Channel and Multi-Point Resistance Scanner

Bench scanners that step a four-wire measuring circuit through 2 to 64 channels, applying per-channel limits, in ranges from 1 µΩ to 2 MΩ and at up to 40 readings per second.

Channels: 2 to 64 per instrument; 3 to 100 on one family, to order
Measurement: DC resistance, four terminals per channel
Resistance range: 1 µΩ to 2 MΩ on the wide families; 10 µΩ to 200 kΩ on the common ones
Accuracy: 0.05% typical; 0.02% on one family

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DT9205A (3 models) · Digital Multimeters

Handheld Digital Multimeter

Handheld digital multimeter with a 1999-count display and 32 ranges covering AC and DC voltage and current, resistance, capacitance, diodes and transistors, with continuity, overload protection and automatic switch-off.

Display: 1999 counts, 3½ digits
DC voltage: 200 mV to 1000 V in five ranges
AC voltage: 200 V and 750 V
DC and AC current: 2 mA to 20 A

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Narrow benchtop power supply seen from the front, with a large LED display reading 30.00 volts, 5.000 amps and 0.000 watts, two adjustment knobs, an ON/OFF key, a quick-charge USB socket and one red and one black output terminal

eTM-152MF (5 models) · Electrical Test Equipment

Miniature Adjustable DC Power Supply

Bench DC power supply in a narrow 80 mm case, with 15 to 150 V and 2 to 20 A models, four-digit voltage, current and power readout, and preset without shorting the output.

Output voltage: 15, 30, 60, 100 or 150 V maximum, by model
Output current: 2 to 20 A maximum, by model
Readout: Four-digit LED for voltage, current and power at the same time
Setting resolution: 10 mV below 100 V, 0.1 V at 100 V and above

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Benchtop high-voltage tester seen from the front, with a blue dot-matrix display at the upper left showing a voltage and a current reading, soft keys beside it, a direction pad and numeric keypad at the right, and two round test sockets along the lower edge

HG2536 · Electrical Test Equipment

Gas Discharge Tube Characteristic Tester

Tester for ceramic gas discharge tubes and surge arrester parts, with 5 to 2000 V output, leakage measurement to 2200 µA and a HANDLER interface for sorting.

Output voltage: 5 to 2000 V, continuously settable, ±1%
Voltage rise rate: 100 V per second, ±1%
Voltage measurement accuracy: 0.5% ±0.1 V
Leakage range: 0.00 to 2200.0 µA, error within ±1%

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Benchtop diode tester seen from the front, with a blue dot-matrix display at the upper left showing four stacked readings labelled for reverse voltage, reverse leakage, forward current and forward voltage, soft keys beside it, a direction pad and numeric keypad at the right, and two round test sockets along the lower edge

HG2600 · Electrical Test Equipment

Diode Reverse Voltage and Leakage Current Tester

Benchtop diode tester measuring forward voltage and forward current, reverse voltage to 1200 V and reverse leakage to 2200 µA, with three test speeds and a PLC interface.

Parameters measured: Reverse voltage Vka, reverse leakage Ika, forward current Iak and forward voltage Vak
Forward voltage: 0.1 to 2.5 V
Forward current: 0.00 to 30 A, with the range separator not legible in the source
Reverse voltage: 5 to 1200 V, in two ranges split at 135 V

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Bench capacitor test instrument seen from the front, with two green LED readouts across the upper panel, a row of four BNC terminals and a ground terminal along the lower left, and a keypad with arrow keys at the lower right

HG2611D · LCR Meters

Electrolytic Capacitor Leakage Current Tester

Bench leakage current tester for aluminium electrolytic capacitors, with a 0 to 500 V adjustable charging voltage, three current ranges from 0.01 µA to 30 mA and settable charge and discharge times.

Test voltage: 0 to 500 V, continuously adjustable
Leakage ranges: 0.01 to 3 µA, 3 µA to 3 mA, 3 mA to 30 mA
Reading error: ±1% ±2 digits
Charge time: 0 to 99 s, ±2%

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Benchtop inductance meter seen from the front, with a blue backlit LCD at the left showing an inductance value and a quality factor, a numeric keypad and arrow keys at the right, and four BNC terminals with a ground terminal along the lower front edge

HG2776A (2 models) · LCR Meters

Precision Inductance Meter with Wide Frequency Coverage

Two bench inductance meters, one covering 100 Hz to 200 kHz in 37 points at 0.05% accuracy and one covering four points to 10 kHz at 0.1%, both with four-terminal connection and multi-parameter display.

Test frequency: 100 Hz to 200 kHz in 37 points on HG2776A; 100 Hz to 10 kHz in four points on HG2775A
Basic accuracy: 0.05% on HG2776A; 0.1% on HG2775A
Test level: 10 mV to 2.00 V in 10 mV steps on HG2776A; 0.1 V, 0.3 V or 1 V on HG2775A
Inductance range: 0.01 nH to 9999.99 H

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Benchtop tester seen from the front, with a blue dot-matrix display at the upper left showing two measured parameters, a column of soft keys beside it, a direction pad and numeric keypad at the right, and two round test sockets along the lower edge

HG2788 · Electrical Test Equipment

Piezo Buzzer Plate Parameter Tester

Benchtop tester for piezoelectric buzzer plates, measuring equivalent resistance Rs and resonant frequency Fs, with seven-bin sorting, three test speeds and a HANDLER interface.

Parameters measured: Equivalent resistance Rs and resonant frequency Fs
Basic accuracy: ±1% ±5 Ω
Resistance display: 25 Ω to 2200 Ω; the display-range row gives a 20 Ω lower limit
Frequency display: 0.8 kHz to 19.99 kHz

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Bench LCR bridge in a grey case, with a five-digit LED display showing a primary and a secondary reading, four coaxial test terminals across the lower centre of the panel, a column of range and function keys at the right and the power switch at the left

HG2810B (6 models) · LCR Meters

Bench LCR Digital Bridge

Bench LCR bridges covering fixed-frequency and wide-band models, with 0.10% or 0.05% basic accuracy, five-terminal connections, bin sorting and optional RS232 and HANDLER interfaces for incoming inspection and production sorting.

Test frequencies: 100 Hz, 120 Hz, 1 kHz and 10 kHz on the general models; up to 100 kHz on HG2817 and HG2817B; 8 points to 100 kHz on HG2817D; 37 points from 50 Hz to 200 kHz on HG2817A
Basic accuracy: 0.10% on the general models; 0.05% on HG2816A and HG2817A
Test level: 0.3 V on HG2810B; 0.1 V, 0.3 V or 1.0 V on most other models; 10 mV to 2.00 V in 10 mV steps on HG2816A and HG2817A
Display ranges: L 0.01 µH to 99999 H and C 0.01 pF to 99999 µF on the general models, with wider ranges on the LCD models

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Benchtop core tester seen from the front, with a blue dot-matrix display at the upper left showing a voltage reading in millivolts and a column of range values, soft keys beside it, a direction pad and numeric keypad at the right, and two round test sockets along the lower edge

HG2900 · Electrical Test Equipment

Magnetic Core Magnetization Characteristic Tester

Benchtop tester for soft magnetic cores and core-sorting machines, measuring induced voltage from 1 μV and magnetomotive force to 2.00 A, with fourteen pass bins and five test speeds.

Voltage range: 1 μV to 33 mV, in three ranges of 0.3, 3.0 and 30 mV
Voltage resolution: 1 μV
Magnetomotive force: 0.00 to 2.00 A, accuracy ±1%
Sorting: One under-limit bin, fourteen pass bins and one over-limit bin

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Benchtop winding resistance tester seen from the front, with a blue backlit LCD at the left showing three channel readouts stacked vertically, a numeric keypad and arrow keys at the right, and two circular multi-pin test connectors along the lower front edge beside the power switch

HG3030 · LCR Meters

Three-Phase Motor Winding Resistance Balance Tester

Three-channel DC resistance tester for motor windings, covering 10 µΩ to 2 MΩ at 0.05% accuracy, with simultaneous three-phase display, percentage comparison and pass or fail sorting.

Channels: Three, measured and displayed together
Resistance range: 10 µΩ to 2 MΩ
Best accuracy: 0.05%
Test current: DC 100 mA down to 1 µA, eight ranges

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Benchtop insulation resistance meter in a pale grey case, with a colour screen at the left showing a resistance reading above a current reading and a column of menu labels, a keypad at the right and an input socket beside two high-voltage terminals at the lower right

HG7683 (2 models) · Insulation Resistance Testers

High-Speed Wide-Range Insulation Resistance Tester

Bench insulation resistance meter with a voltage range from 1 V, resistance to 100 TΩ, three measuring speeds, five-bin sorting and 600 stored records on the wide-range model.

Test voltage: 1 to 1000 V continuous on the wide-range model; 10 to 1000 V settable on the other
Resistance range: 500 Ω to 100 TΩ on the wide-range model; 100 kΩ to 1 TΩ on the other
Current range: 1 pA to 2 mA on the wide-range model; 0.001 to 200.0 µA on the other
Accuracy: 1% while resistance is below 10 GΩ and current above 10 nA; ±3% ±3 digits below 1 TΩ and ±8% ±3 digits above it on the other model

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Bench transformer tester in a light grey case, with a colour LCD at the left listing turns ratio, inductance, leakage inductance and resistance readings, a column of soft keys and a numeric keypad at the right, and a test fixture resting on top of the case connected to the front panel by a ribbon cable and two coaxial leads

HG7729 (4 models) · LCR Meters

Transformer Comprehensive Tester

Four transformer testers with 20-channel scanning, LCR and DC resistance measurement at 0.05% basic accuracy, built-in DC bias and test frequencies from 20 Hz to 1 MHz for production testing of wound components.

Test frequency: 20 Hz to 200 kHz on HG7729; 20 Hz to 300 kHz on HG7729A and HG7729B; 20 Hz to 1 MHz on HG7729C
Scanning: 20-channel transformer scan on all four models
LCR parameters: |Z|, |Y|, C, L, X, B, R, G, D, Q and phase, plus DC resistance, turns and phase
Transformer scan parameters: Turns ratio, number of turns, phase, inductance, capacitance, leakage inductance, quality factor, AC resistance, DC resistance, balance, pin short and LED

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Benchtop hipot tester seen from the front, with a red stop button at the left, a colour display showing a withstand test, a keypad and function keys at the right, eight channel terminals labelled CH1 to CH8 along the lower edge and output and return terminals at the far right

HG7804 (2 models) · Electrical Safety Testers

High-Power AC/DC Withstand and Insulation Tester

High-power safety tester with AC and DC withstand, insulation resistance, open and short detection and arc detection, in a four-channel and an eight-channel version with scanner expansion.

AC withstand: 0.05 to 5 kV, 0.1 to 30 mA, 50 or 60 Hz
DC withstand: 0.05 to 6 kV, 0.01 to 10 mA
Insulation resistance: 0.05 to 1 kV, 0.1 MΩ to 10 GΩ
Test power: 150 V/A as printed in the material

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Precision LCR bridge seen from the front, with a colour TFT display at the left showing capacitance, dissipation factor and series resistance readings, a column of soft keys beside the display, a rotary knob and numeric keypad at the right, and a row of coaxial test terminals along the lower edge

HG7829A (3 models) · LCR Meters

Precision LCR Digital Bridge with Graphical Sweep

Precision bench LCR bridges covering 20 Hz to 300 kHz, 500 kHz or 1 MHz at 0.05% basic accuracy, with 1 mHz frequency resolution, a 7-inch colour display, 40-point list sweeps and graphical analysis.

Test frequency: 20 Hz to 300 kHz on HG7829A, to 500 kHz on HG7829B, to 1 MHz on HG7829C
Frequency resolution: 1 mHz, continuously variable
Basic accuracy: 0.05%
Test level: 5 mV to 2 V as standard; 5 mV to 10 V on the enhanced version

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HG9813 (4 models) · LCR Meters

Winding Insulation Tester

Four impulse winding testers reaching up to 10 kV, with corona analysis, high-speed waveform capture, a 7-inch colour display and pass or fail outputs for inter-turn insulation testing of coils and windings.

Pulse voltage: 100 V to 3000 V on HG9813, 100 V to 5000 V on HG9815, 200 V to 6000 V on HG9816 and 300 V to 10,000 V on HG9810, all in 10 V steps at 5% ±10 V
Pulse energy: 0.09 J on HG9813, 0.25 J on HG9815, 0.36 J on HG9816 and 0.5 J on HG9810
Inductance range: ≥10 µH on HG9813, HG9815 and HG9816; ≥50 µH on HG9810
Test speed: 15 per second on HG9813 and HG9815, 12 on HG9816 and 8 on HG9810

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Light grey bench instrument with a liquid crystal display showing a table of battery readings on the left, a keypad with arrow keys and a numeric block on the right, and four terminals marked P+, R+, P- and R- along the lower right

HTB-2020 (2 models) · Electrical Test Equipment

Battery Capacity and Internal Resistance Tester

Two-model battery tester measuring voltage to 80 V, over-current to 20 A, internal resistance, identification resistance and capacity, with a built-in DC supply for charge and discharge.

Battery voltage range: 0 to 20.000 V on HTB-2020; 0 to 80.000 V on HTB-2060, at 0.001 V
Over-current range: 0 to 10.000 A on HTB-2020; 0 to 20.000 A on HTB-2060, at 0.001 A
Internal resistance: 0 to 999.0 mΩ, resolution 0.1 mΩ
Identification resistance: 0.1 to 999.9 kΩ, resolution 0.1 kΩ

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Bench instrument with a light grey case and black front panel, a colour display showing four large zero readings above five soft keys, a row of status values beneath, a single large adjustment knob at the upper right and a pair of output terminals marked IN and OUT at the lower right

KS9830 (5 models) · Electrical Test Equipment

Battery Simulator Power Supply

Five-model battery simulator range covering 20 to 48 V and up to 20 A, with 1 mV and 1 mA setting resolution, four-wire remote sensing and readback of voltage, current and power.

Output voltage: 0 to 20 V on KS9830; 0 to 24 V on KS9831 and KS9831A; 0 to 48 V on KS9832 and KS9832A
Output current: 0 to 12 A on KS9830; 10 or 20 A switchable on the other four
Output power: 0 to 240 W on KS9830, KS9831 and KS9831A; 0 to 450 W on KS9832 and KS9832A
Setting resolution: 1 mV on voltage, 1 mA on current

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Light grey benchtop meter seen from the front, with three range keys and a power switch at the left, a four-digit red LED display in the centre showing 0.000, two red current terminals below it, and an INPUT socket with a COM terminal at the right beside two warning symbols

LK149A (5 models) · Electrical Safety Testers

Digital High Voltage Meter

Benchtop high voltage meter for verifying hipot tester output, covering 10 kV and 20 kV AC/DC ranges with 0.001 kV resolution and 0.4% DC accuracy.

Voltage ranges: 0 to 10.000 kV AC and DC on LK149A, LK7005 and LK7015; 0 to 19.999 kV on LK149B and LK7020
DC accuracy: ±(1% + 2 counts) on LK149A and LK149B; ±(0.4% of reading + 0.02% of range) on LK7005, LK7020 and LK7015
AC accuracy: ±(1% + 2 counts) on LK149A and LK149B; ±(0.8% of reading + 0.02% or 0.04% of range) on the other three
Resolution: 0.001 kV on every model

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Light grey benchtop tester seen from the front, with a small model plate at the upper left, three red LED readouts across the top centre labelled for time, leakage current and voltage, a large grey voltage knob at the lower left, a row of setting keys in the middle and two high-voltage output terminals at the right

LK2670AX (6 models) · Electrical Safety Testers

Adjustable AC/DC Withstand Voltage Tester

Adjustable hipot tester series with 0 to 5 kV and 0 to 10 kV outputs, leakage ranges to 500 mA, presettable test time and optional PLC control.

Output voltage: 0 to 5 kV AC or AC/DC on the 5 kV models; 0 to 10 kV AC or AC/DC on the 10 kV models; 0 to 3 kV DC on LK2673C
Leakage current ranges: 0 to 2 mA or 20 mA; 100 mA, 200 mA and 500 mA ranges on the higher-current models
Accuracy: ±(5% + 3 counts) across the series
Test time: 1 to 99 s as standard, 1 to 999 s on LK2672C+ and available as a custom setting

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Grey benchtop tester seen from the front, with a model plate at the upper left, three green LED readouts across the top, a control column at the left holding a preset knob and green and red buttons, a large voltage knob in the centre and two large red high-voltage output sockets at the right

LK2674 (5 models) · Electrical Safety Testers

Ultra-High-Voltage AC/DC Hipot Tester

Ultra-high-voltage hipot tester reaching 15, 20, 30 or 50 kV, with AC or AC/DC output, leakage ranges to 20 mA and a 1 to 99 s preset test time.

Output voltage: 0 to 15 kV, 0 to 20 kV, 0 to 30 kV or 0 to 50 kV depending on model
Output type: AC on the AC models; AC and DC on the AC/DC models, selected by a front-panel switch
Leakage range: 0 to 2 mA or 10 mA on the standard models; 0 to 2 mA or 20 mA on the + models
Accuracy: ±(5% + 5 counts); ±(5% + 3 counts) on the 15 kV and 20 kV models

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Off-white benchtop tester seen from the front, with a model plate at the upper left, three red digital readouts in a black strip across the top, a row of setting keys and two indicator lamps beneath them, a large voltage knob at the left, a blue selector and a red start button at the bottom centre, and a universal mains socket at the right

LK2675A (5 models) · Electrical Safety Testers

Appliance Leakage Current Tester

Leakage current tester with 0 to 250 V adjustable output, 300 VA to 2000 VA supplies, true-RMS AC/DC measurement to 1 MHz and a three-phase model.

Output voltage: 0 to 250 V on the single-phase models; three-phase on LK2675S
Transformer capacity: 300 VA, 1000 VA or 2000 VA depending on model; LK2675E and LK2675S use an external variac
Leakage range: 0 to 2 mA or 0 to 20 mA, accuracy ±(5% + 5 counts)
Measurement: True-RMS AC/DC conversion, responding to direct, alternating, sine and composite waveforms

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Off-white benchtop tester seen from the front, with a large grey current knob at the left, a black display strip carrying three red digital readouts across the centre, a row of small keys below it and two pairs of red and black terminals on a separate panel at the right

LK2678BX (4 models) · Electrical Safety Testers

Four-Wire Ground Bond Resistance Tester

Four-terminal ground bond tester with 1 to 50 A output across four models, 0 to 600 mΩ ranges, presettable test time and upper limit alarm.

Output current: 5 to 32 A on LK2678BX, 10 to 50 A on LK2678, 3 to 32 A on LK7305, 0.01 to 45 A on LK7340
Resistance range: 0 to 200 mΩ or 0 to 600 mΩ on LK2678BX and LK2678; 0 to 510 mΩ on LK7305; 0 to 600 mΩ on LK7340
Resistance accuracy: ±5% on LK2678BX and LK2678; ±2% on LK7305 and LK7340
Test time: 1 to 99 s on LK2678BX, 1 to 999 s on LK2678, 0.1 to 999.9 s on LK7305, 0 or 0.5 to 999.9 s on LK7340

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Bench insulation resistance tester in a pale grey case, with a two-line backlit liquid crystal display showing a stored setting and a test voltage in the centre, a red reset button and a green test button at the left, four small keys below the display and a red high-voltage terminal beside a black return terminal at the right

LK2679C (6 models) · Insulation Resistance Testers

Programmable Insulation Resistance Tester

Programmable insulation resistance tester with 0.5 to 1000 V direct output, resistance to 10 TΩ, leakage current from 10 pA and SCPI control over USB, RS232, RS485 or a handler interface.

Resistance range: 10 kΩ to 10 TΩ on the programmable 1 kV model; 100 kΩ to 10 TΩ on the manual 1 kV model
Test voltage: 0.5 to 1000 V continuously on the programmable models; fixed taps from 10 V on the manual ones
Leakage current: 10 pA to 1 mA on the programmable models
Accuracy: ±2% above 10 nA, ±5% below 10 nA and ±10% below 1 nA

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Light grey benchtop tester seen from the front, with a model plate at the upper left, three green LED readouts across the top, a preset control column at the left, a row of setting knobs above a green start key and a red reset key, a large voltage knob in the centre and a single high-voltage output socket at the right

LK2680A (4 models) · Electrical Safety Testers

Medical Electrical Safety Tester

Medical safety test range covering withstand voltage, ground bond resistance and leakage current, with arc detection, true-RMS measurement and 1 MHz response.

Withstand output: 0 to 5 kV AC on LK2680A; 0 to 5 kV AC or DC on LK2680D
Leakage ranges: 0 to 2 mA or 20 mA, AC on LK2680A and LK2680CX; AC or DC on LK2680D
Ground bond: 5 to 32 A through 0 to 600 mΩ on LK2680B, open-circuit voltage 6 V or less
Leakage test voltage: 0 to 250 V on LK2680CX, with a 500 VA isolation transformer as standard

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Light grey benchtop tester seen from the front, with a green start button and a red stop button stacked at the left, a yellow-green two-line LCD in the centre showing a set voltage and current, four soft keys beneath it, three indicator lamps at the upper right and a high-voltage terminal with a return terminal below it

LK7110+ (5 models) · Electrical Safety Testers

SCPI Programmable Hipot and Insulation Tester

Menu-driven programmable hipot tester with 5 kV AC and 6 kV DC outputs, insulation resistance to 9999 MΩ, four test modes and standard RS232 and PLC interfaces.

Output voltage: 0 to 5 kV AC on all models; 0 to 6 kV DC on LK7122+, LK7122U and LK9302
Leakage ranges: 0 to 12 mA AC and 0 to 5 mA DC; 0 to 999.9 µA AC or DC on LK7122U
Insulation resistance: 1 to 9999 MΩ at 100 to 1000 V DC on LK7122+, LK7122U and LK9302
Test modes: Withstand, insulation, withstand then insulation, insulation then withstand; LK7110+ and LK9302B run the withstand mode only

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Light grey benchtop tester seen from the front, with a green start button above a red stop button at the left, a colour screen showing a test menu in the centre, a keypad with menu keys and numeric keys at the right, and a row of eight identical high-voltage terminals along the bottom edge beside a separate output terminal

LK7140P (6 models) · Electrical Safety Testers

Multi-Channel Programmable Hipot Tester

Programmable hipot and insulation tester with 5 kV AC and 6 kV DC outputs, 50 GΩ insulation range, arc detection and four or eight scanning channels.

AC output: 0.10 to 5.00 kV, 0 to 20.00 mA
DC output: 0.10 to 6.00 kV, 0 to 10.00 mA
Insulation resistance: 0.1 MΩ to 50.0 GΩ at 0.10 to 1.00 kV
Current accuracy: ±(2% of reading + 5 counts) on both AC and DC

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Grey benchtop instrument seen from the front, with a blue LCD showing a multi-step test menu at the left, five function keys beside it, a numeric keypad and arrow keys in the centre, four indicator lamps above the keypad and a red reset button above a green test button at the right

LK9661D (3 models) · Electrical Safety Testers

Six-in-One Electrical Safety Compliance Tester

Combined safety compliance tester running withstand, insulation, ground bond, leakage and no-load power tests in one sequence, with 100 programs of eight steps.

AC withstand: 200 to 5000 V, 0.10 to 25.00 mA, 1 to 300 s
DC withstand: 0 to 10 mA at 0.3 to 6 kV on LK9661D only
Insulation resistance: 1 to 2000 MΩ at 500 or 1000 V DC
Ground bond: 5.0 to 30.0 A into 10.0 to 600 mΩ, 1 to 60 s

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M2 · Signal Isolators

DIN-Rail Signal Isolator

DIN-rail signal isolators and distributors giving 2000 Vrms isolation between input, output and supply, with 0.1%FS transmission accuracy and 10 ms response.

Isolation: 2000 Vrms for 1 min, no flashover, between input, output and supply
Insulation resistance: 100 MΩ minimum at 500 VDC
Transmission accuracy: 0.1%FS at 20°C
Temperature drift: 0.0075%FS/°C

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Benchtop power meter with a pale case, four red LED windows arranged two by two with the labels VOLTAGE, CURRENT, POWER and PF over them, and a six-key panel with two indicator lamps at the right

PW9800 (5 models) · Power Meters

Wide-Range Single-Phase Digital Power Meter

Single-phase power meter range with ratings from 5 mA to 200 A, four-window LED display, five readings per second and optional RS232, RS485 or relay output.

Measurement: Voltage, current, active power, power factor and frequency; the base model has no frequency display
Voltage range: 5 to 400 V AC; 2 to 400 V on two models as carded; 800 V peak
Current range: 5 mA to 20 A on the base rating, and up to 200 A on the highest rating of the alarm model
Power range: 0.1 W to 16.5 kW

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Upright bench power supply seen from the front, with a dark display reading 30.00 volts and 5.000 amps, a CV lamp lit, six small keys including M1 to M3, a large rotary knob and three output posts at the bottom

QJ300N (4 models) · Electrical Test Equipment

Adjustable Linear DC Power Supply

Linear bench supply, 30 V at 3 or 5 A, with 1 mVrms ripple, fine and coarse adjustment on one knob, three stored settings and an option for USB control.

Output voltage: 0 to 30 V, continuously adjustable
Output current: 0 to 3 A or 0 to 5 A, by model
Setting accuracy: 0.5% + 20 mV on voltage, 0.1% + 5 mA on current, at 25 ±5 °C
Ripple: 1 mVrms on voltage and 3 mArms on current, measured from 20 Hz to 20 MHz

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Bench resistance meter seen from the front, with a colour display reading 1.000 mΩ at the left, a numeric keypad at the right and the four test terminals at the lower right

SJ2511 (6 models) · Electrical Test Equipment

Four-Wire DC Low Resistance and Milliohm Meter

Bench four-wire DC resistance meters covering 0.01 µΩ to 2.4 GΩ across the group, with basic accuracy from 0.006% to 0.1%, test current to 10 A and three-level comparator sorting.

Test method: Four-terminal Kelvin, DC test signal
Widest range in the group: 0.01 µΩ to 2.4 GΩ
Narrowest range in the group: 10 µΩ to 20 kΩ
Basic accuracy: 0.006% to 0.1% across the group

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Front panel of the four-point probe meter, with the colour display showing sheet resistance in milliohms per square, resistivity and conductivity, and the function keys below the screen

SJ2663 (4 models) · Electrical Test Equipment

Four-Point Probe Sheet Resistance and Resistivity Tester

Four-point probe testers that read sheet resistance, resistivity and conductivity on wafers, films, coatings and bulk samples, with thickness preset and 3% sheet resistance accuracy.

Measured quantities: Sheet resistance, resistivity, conductivity and plain resistance, shown together
Probe geometry: Four in-line probes, 1 mm, 2 mm or 4 mm spacing depending on the head fitted
Resistance range: 100 µΩ to 100 kΩ on the compact model; 1 µΩ to 100 MΩ on the widest
Sheet resistance accuracy: 3% on three models; 4% on the low-resistance model; 5% above 2 MΩ

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Benchtop insulation resistance meter in a grey case with a carrying handle, a colour screen at the left showing resistance and current readings above a row of soft keys, a numeric keypad at the right and three terminals labelled Input and Output below it

SJ2682A (6 models) · Insulation Resistance Testers

Programmable Digital Insulation Resistance Meter

Benchtop insulation resistance meter with programmable direct voltage from 0.5 V, resistance ranges to 100 PΩ on the top model, micro-current measurement from 0.1 fA and four-bin sorting.

Resistance range: 10 kΩ to 1 TΩ on the entry model; 0.1 kΩ to 100 PΩ on the top model
Test voltage: Direct, 10 to 1000 V in 1 V steps, or 0.5 to 1000 V in 0.1 V steps by model
Current range: 1 mA down to 0.01 pA, 0.01 nA, 0.01 pA or 0.1 fA by model
Resistance accuracy: ±2% or ±3% below 1 GΩ, ±5% above 1 GΩ, ±10% above 1 TΩ

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Front panel of the resistivity meter, with the colour display showing insulation resistance, volume resistivity and leakage current, and the function keys below the screen

SJ5013 (3 models) · Electrical Test Equipment

Volume and Surface Resistivity Meter for Insulating Materials

Programmable insulation testers that read volume resistivity, surface resistivity, insulation resistance and leakage current on rubber, film, fabric, powder and liquid specimens, up to 100 PΩ at 1000 V.

Measured quantities: Insulation resistance, volume resistivity, surface resistivity and leakage current, shown together
Resistance range: 10 kΩ to 10 TΩ; to 100 PΩ or 1 PΩ on the two larger models
Current range: 10 pA to 1 mA; 0.1 fA to 2 mA; 0.01 pA to 2 mA
Test voltage: 0.5 to 1000 V DC, programmable

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Conductor resistivity meter seen from the front, with a colour display showing resistance, resistivity and conductivity plus the entered diameter and length, a keypad at the right and four LD, LS, HS and HD terminals along the lower edge

SJ5511 (2 models) · Electrical Test Equipment

Cable and Wire Conductor Resistivity Tester

Four-terminal conductor testers that read resistance, resistivity and conductivity on wire and bar from 0.02 mm diameter, with 0.02% basic accuracy and up to 10 A test current.

Measured quantities: Resistance, resistivity and conductivity, shown together
Resistance range: 0.1 µΩ to 10 MΩ; 0.01 µΩ to 10 MΩ on the larger model
Basic accuracy: 0.02% on both models in the parameter table; 0.05% on one model card
Test current: ≤1 A; ≤10 A on the larger model

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SJ7110 (6 models) · Electrical Safety Testers

Programmable Withstand Voltage and Insulation Tester

Programmable safety tester range applying up to 5 kV AC or 6 kV DC, measuring leakage current against preset limits and insulation resistance to 50 GΩ, with arc detection and ten memory groups.

AC output: 0.10 kV to 5.00 kV
DC output: 0.10 kV to 6.00 kV, on five of the six models
Leakage current: 0 to 12.00 mA AC and 0 to 5.00 mA DC as standard; 20 mA and 10 mA on the largest model
Insulation resistance: 1 MΩ to 10 GΩ on the mid range; 0.1 MΩ to 50.0 GΩ on the two largest models

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Benchtop electrical parameter meter in a pale case seen from the front, with a black display showing four stacked rows of red digits marked V, mA, W and PF, a column of small keys at the right of the screen and a four-way control with a central Enter key

SJ9800 (5 models) · Power Meters

Four-Window Digital Power and Electrical Parameter Meter

Benchtop electrical parameter meter with four LED windows showing voltage, current, power and power factor together, 0.5 class accuracy, automatic range switching and optional serial communication.

Display: Four windows, four-digit high-brightness LED
Input voltage: 3 to 360 V AC on the selection table; 3 to 600 V on the parameter page, both carried
Input current: 5 mA to 20 A on three models; 5 mA to 2 A on the two small-current models
Accuracy: 0.5 class, as stated in the material

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TH1941 (6 models) · Digital Multimeters

Benchtop Digital Multimeter

Benchtop digital multimeter range in 4½, 5½ and 6½ digit models, with dual VFD or colour LCD displays, DCV to 1000 V, four-wire resistance and USB, GPIB or RS232 control.

Resolution grades: 4½ digit at 21,000 or 51,000 counts; 5½ digit at 119,999 or 120,000 counts; 6½ digit at 1,199,999 counts
DC voltage: 200 mV to 1000 V on TH1941; 500 mV to 1000 V on TH1942; 100 mV to 1000 V on the 5½ and 6½ digit models
AC voltage: 200 mV to 750 V on TH1941; 500 mV to 750 V on TH1942; 100 mV to 750 V on the 5½ and 6½ digit models
Tightest one-year DCV uncertainty: 0.02% of reading + 0.008% of range on TH1942

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Bench capacitor leakage tester in a light grey case, with a backlit dot matrix display at the left showing a leakage current reading and charge status, function keys and a numeric keypad at the right, and a red high-voltage terminal beside two measurement terminals at the lower right

TH2689 (4 models) · LCR Meters

Capacitor Leakage Current Tester

Bench capacitor leakage testers with adjustable test voltage, leakage current measurement down to the nanoamp region, insulation resistance to 99.99 GΩ, timed charging and comparator limits.

Test voltage: 1 V to 800 V on TH2689; 1 V to 500 V on TH2689A; 0 to 200 V and 0 to 500 V on TH2686N and TH2686C
Voltage accuracy: ±(0.5% of setting + 0.2 V) on TH2689 and TH2689A; ±1% of setting + 1 digit on TH2686N
Leakage current range: 0.001 µA to 20.00 mA on TH2689 and TH2689A; 10 nA to 19.99 mA with 1 nA resolution on TH2686N; 0 to 30 mA in 10 ranges on TH2686C
Insulation resistance: 0.01 MΩ to 99.99 GΩ on TH2689 and TH2689A

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TH2822A (4 models) · LCR Meters

Handheld LCR Meter

Four handheld LCR meters covering 100 Hz to 100 kHz, with 0.25% or 0.1% basic accuracy, a dual parameter backlit display, automatic range and Mini-USB control, for measuring inductors, capacitors and resistors away from the bench.

Test frequencies: 100 Hz, 120 Hz, 1 kHz and 10 kHz; 100 kHz added on TH2822C and TH2822E
Basic accuracy: 0.25% on TH2822A and TH2822C; 0.1% on TH2822D and TH2822E
Measured parameters: L, C, R and Z as primary, with D, Q, phase angle and ESR as secondary; DC resistance on TH2822D and TH2822E
Display ranges: L 0.00 µH to 1000.0 H; C 0.00 pF to 20.000 mF; Z and R 0.0000 Ω to 10.000 MΩ

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TH2882A-3 (3 models) · LCR Meters

Impulse Winding Tester

Impulse winding testers that apply a high-voltage pulse to a coil and compare the response waveform against a reference, for finding inter-turn shorts, weak insulation and winding faults in single-phase and three-phase parts.

Output pulse voltage: 300 V to 3000 V ±5% in 50 V steps on TH2882A-3; 500 V to 5000 V ±5% in 100 V steps on TH2882A-5; the model list gives the same 500 V to 5000 V for TH2882AS-5
Pulse energy: ≤90 millijoules on TH2882A-3; ≤250 millijoules on TH2882A-5 and, in the model list, on TH2882AS-5
Inductance range: ≥10 µH on TH2882A-3; ≥20 µH on TH2882A-5; ≥200 µH on TH2882AS-5
Waveform sampling: ≤40 MSPS at 8 bit

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Programmable withstand voltage tester with a colour TFT display on the left of the front panel, a column of function keys beside it and the high-voltage output terminals below

TH9310 (6 models) · Electrical Safety Testers

TFT Display AC/DC Withstand Voltage and Insulation Tester

Programmable safety tester with a 480 by 272 TFT display, AC and DC withstand voltage to 6 kV, insulation resistance to 10 GΩ, twenty test files of twenty steps and arc detection.

AC output: 0.05 kV to 5.00 kV, ±2%
DC output: 0.05 kV to 6.00 kV, ±2%, on four of the six models
AC leakage current: 0 to 10.00 mA; 1 µA to 20.00 mA on the higher-current model
Insulation resistance: 0.1 MΩ to 10.0 GΩ at 0.10 kV to 1.00 kV

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Benchtop oscilloscope in an ivory and grey case, with a blue trace on the display, five menu keys in a column beside the screen, vertical, horizontal and trigger control blocks to the right and two BNC inputs at the lower right

UTD2102CEX+ (3 models) · Electrical Test Equipment

Two-Channel Digital Storage Oscilloscope

Two-channel digital storage oscilloscope with 100 MHz bandwidth, 1 GSa/s sampling, 64 kpoint memory, a 7 inch display and recording of up to 1000 screens.

Bandwidth: 100 MHz on UTD2102CEX+; 150 MHz on UTD2152S-E; 200 MHz on UTD2202CEX+
Channels: Two analog channels, with independent coupling settings
Sampling rate: 1 GSa/s maximum
Memory depth: 64 kpts

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Wide benchtop AC source with a colour screen showing voltage, current, power and frequency at 220 volts and 50 hertz, a column of function keys, a rotary knob and a universal output socket at the right

YP4035 (7 models) · Electrical Test Equipment

Programmable AC Power Source

Programmable AC source from 350 VA to 10 kVA, with 45 to 400 Hz output, two voltage ranges, 2% distortion and RS-232 control for bench and line testing.

Capacity: 350 VA to 10 kVA across seven models
Output voltage: 1.0 to 150.0 V on the low range, 150.1 to 300.0 V on the high range
Frequency: 45 to 400 Hz, 0.1 Hz steps, with 50, 60 and 400 Hz shortcut keys
Distortion: 2% total harmonic distortion or less

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Benchtop digital power meter in a pale case, front view with a wide black display showing four stacked numeric lines against the A, B, C and D channel labels, and a keypad with a rotary confirm control to the right of the display

YP9901 (3 models) · Power Meters

Single-Phase Digital Power Meter

Panel digital power meter reading voltage, current, active power, power factor, frequency, apparent and reactive power in four windows at once, with an RS232 Modbus RTU port as standard and current ratings from 20 A to 200 A.

Basic accuracy: ±0.2 % (0.2 class)
Measurement mode: AC on the AC series; AC, DC and RMS on the AC/DC series
Voltage input: 3 to 600 V AC; 3 to 600 V AC + DC on the AC/DC series
Current ranges: 5 mA to 20 A up to 50 mA to 200 A, according to series and rating

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Benchtop safety tester seen from the front, with three push buttons at the left, a colour touch screen in the centre, a pair of test terminals to its right and a universal output socket at the far right

YP9950 (3 models) · Electrical Safety Testers

Five-in-One Electrical Safety Performance Tester

Touch screen safety performance tester combining withstand, ground bond, insulation, leakage and electrical parameter measurement in one sequence, in three configurations.

AC withstand: 300 to 5000 V, leakage 0.100 to 20.00 mA
Ground bond: AC 3 to 32 A, 0 to 600 mΩ, four-wire
Insulation resistance: DC 200 to 1000 V, 0.1 to 2000 MΩ
Leakage current: Static or dynamic, 0.000 to 20 mA

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Bench instrument seen from the front, with a colour display showing a decaying waveform trace across a graticule at the left, a column of soft keys beside it, a keypad and arrow pad at the right, and four high-voltage terminals with a ground terminal along the lower edge

ZX1373X-12A (3 models) · LCR Meters

High-Frequency LCR Bridge with DC Bias Current Source

Bias bridge instruments combining a high-frequency LCR meter with a 0 to 12 A or 0 to 25 A DC current source, with 0.25 mA current steps, sweeps up to 3600 s and stackable slaves to 225 A.

Bias current: 0 to 12 A, 0 to 25 A, or up to 225 A with eight slaves stacked
Current resolution: 0.25 mA on the lowest range
Maximum output voltage: 11 V at every current setting
Bridge frequency: 50 Hz to 200 kHz as standard; to 1 MHz or 2 MHz on the wide-band models

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Battery tester seen from the front, with a colour display showing 6.008 mΩ and 3.89007 V at the left, a numeric keypad at the right and four source and sense terminals along the lower edge

ZX5560B (5 models) · Electrical Test Equipment

Battery Internal Resistance and Voltage Tester

Four-terminal battery testers that read internal resistance and terminal voltage together, from 0.1 µΩ to 3.1 kΩ and up to 1500 V DC, with bin sorting and handler output.

Measurement: AC internal resistance and DC terminal voltage, shown together
Test method: Four-terminal measurement with a 1 kHz alternating current
Resistance range: 3 mΩ to 3 kΩ on most models; 0.1 µΩ to 3.1 kΩ on the high-voltage models
Voltage range: 60 V, 300 V, 600 V, 1000 V or 1500 V DC, depending on model

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Bench instrument seen from the front, with a colour LCD showing a waveform trace across a graticule at the left, a column of soft keys beside it, a keypad and rotary controls at the right, and four high-voltage terminals with a ground terminal along the lower edge

ZX70A-200K (4 models) · LCR Meters

Impedance Analyzer for Piezoelectric and Ultrasonic Devices

Bench impedance analyzers covering 20 Hz to 5 MHz for piezoelectric ceramics, crystals and ultrasonic transducers, with four-wire Kelvin ports, frequency sweeps and a three-level comparator.

Frequency range: 20 Hz to 200 kHz, 500 kHz, 1 MHz, 2 MHz or 5 MHz, by model
Basic accuracy: 0.05% on the 200 kHz and 500 kHz models; 0.1% on the 1 MHz, 2 MHz and 5 MHz models
Frequency resolution: 1 mHz
Impedance range: 0.01 mΩ to 99.99 MΩ

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Bench LCR meter seen from a low front-left angle, with a blue LCD at the left showing resistance and reactance readings, a column of soft keys beside it, an arrow pad and keypad at the right, and four BNC terminals along the lower edge

ZX8510BN (5 models) · LCR Meters

Compact LCR Digital Bridge with Fixed Frequency Points

Compact bench LCR bridges with four to ten test frequencies up to 100 kHz, basic accuracy from 0.2% to 0.05%, four-wire Kelvin terminals and three or four-bin sorting.

Test frequency: Four, six or ten fixed points between 50 Hz and 100 kHz, by model
Basic accuracy: 0.2% on ZX8511DN; 0.1% on ZX8510BN, ZX8510BT and ZX8517BN; 0.05% or 0.1% on ZX8517BT depending on the table
Test level: 0.1 V, 0.3 V or 1 V rms on the three-level models; 0.1 V to 2 V on the wide-level models
Impedance range: 0.1 mΩ to 99.999 MΩ on the compact models; 0.01 mΩ to 99.9999 MΩ on the wide-level models

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Bench instrument seen from the front left, with a colour display showing four measured parameters and their limits, a block of function keys and a numeric keypad at the right, and three coaxial connectors along the lower right edge

ZX8816 · LCR Meters

Low-Inductance Pulse Coil Tester

Pulse winding tester for coils from 0.1 µH to 1 mH, with four-terminal sensing, voltage compensation, breakdown voltage analysis, a 200 MHz sampler and a fastest test time of 18 ms.

Inductance range: 0.1 µH to 1 mH
Peak test voltage: 10 V to 1000 V
Voltage accuracy: ±(1% of setting + 2.0 V)
Sampling: 10 bits at 200 MHz, eight rate settings

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Benchtop high voltage tester seen from the front, with a green segmented readout across the upper right, a large rotary knob at the left, a row of keys with a red stop button below it and a high voltage terminal at the lower right

ZX9320SA-2 (4 models) · Electrical Safety Testers

Multi-Channel Withstand and Insulation Tester

Compact scanning safety tester with two, four or eight channels, AC and DC withstand, insulation resistance to 50 GΩ and nine-level arc detection.

Channels: Two, four or eight depending on model
AC output: 0.05 to 5.00 kV, ±2%
DC output: 0.05 to 6.00 kV, ±2%, not fitted to AC-only models
Leakage current: AC 0 to 10.00 mA; DC 0 to 10.00 mA on the four-channel model

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Frequently asked

Electrical Parameter Testing questions

The questions that come up before an order. If yours is not here, send it with the duty and we will answer it alongside the quotation.

How accurate does an electrical parameter tester need to be?

The working rule is that the measuring instrument should be several times more accurate than the tolerance being judged. Testing a product with a 5% tolerance against a meter with a 1% error leaves very little margin once the meter uncertainty is included in the result, and a marginal unit cannot be separated from a good one.

Why does true-RMS matter for power measurement?

Voltage and current on modern power supplies are rarely sinusoidal. True-RMS conversion reflects the actual heating effect of the waveform, whereas mean-sensing instruments are calibrated for sine waves and under-report on distorted signals. On a phase-controlled load the reported power can be wrong by a margin large enough to change the pass-fail decision.

Is a higher display resolution always better?

No. Resolution is what the display shows; accuracy is how close the reading is to the truth. A fine-resolution display on an instrument of ordinary accuracy conveys confidence the measurement does not deserve, which is worse than an honest coarse reading.

Can one instrument measure the AC input and the DC output?

Only where it supports both AC and DC measurement modes. An instrument specified for AC only will not give an output-side DC figure, so a second unit is needed and the two readings then have to be reconciled.

Do I need logging or a communication interface?

It depends on what happens to the number. A reading written onto a traveller needs nothing extra. A reading that feeds a test record, a trend or a pass-fail system needs the interface specified up front, because it is usually an option rather than a standard fit.

Should the instrument be portable or bench mounted?

That follows from where the test happens. Bench work favours a larger instrument with better low-end resolution and mains power, while field verification favours a portable unit and accepts the wider uncertainty that comes with it.

Quoting for electrical parameter testing

Send the measurand, the range and the conditions, and we will confirm the instrument family, the configuration and the lead time.

Request a Quote WhatsApp +86 135 8571 9693

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Request a quotation - Electrical Parameter Testing

Send the technical detail and we will confirm availability, lead time and terms. In-stock items ship within 48 hours; customized specifications typically take 2-10 days. Minimum order quantity is 1 pc.

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Items held in stock are dispatched within 48 hours of order confirmation. Customized specifications are produced to order and typically ship within 2 to 10 days. Transit time then depends on the shipping method and destination.