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Dielectric withstand testing is essential for ensuring product safety. It validates insulation integrity to prevent electric shock and current leakage during operation. This testing verifies the performance of insulating materials used in components such as power cables, wire harnesses, and signal cables for high-voltage generators and electronic systems.

Insulation testing primarily consists of two methods: insulation resistance testing and dielectric withstand testing (also known as hipot testing). Insulation resistance testing applies a specific DC voltage to measure resistance and detect leakage current. In contrast, dielectric withstand testing applies a significantly higher voltage for a short duration to ensure the insulation does not break down under stress. Test parameters and required values are strictly defined by applicable safety standards for each product category.

Reliable testing requires precise high-voltage generation. Matsusada Precision offers a comprehensive lineup of high-voltage power supplies engineered for rigorous dielectric withstand and insulation resistance testing applications.

Dielectric Withstand Test Circuit
Dielectric withstand test circuit
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Recommended products

Power supply equipment for insulation testing is available.

AU series

AU series

Voltage Range
1 to 120 kV
Current
0.25 to 2200 mA
Power
30 to 2200 W
Rack mount High Voltage DC Power Supply

With over 300 models, the AU series features a compact, low-profile design ideal for system integration. It supports extensive remote control and monitoring, with optional digital interfaces.

AUH series

AUH series

Voltage Range
150 to 200 kV
Current
6 to 13.3 mA
Power
1.2 to 2 kW
Ultra High Voltage Power Supply

Delivering up to 200 kV in a standard 19-inch rack-mount package, the AUH series is a safe and stable power source for ultra-high voltage applications.

EPR series

EPR series

Voltage Range
1 to 30 kV
Current
1 to 150 mA
Power
30 to 150 W
Compact 150 W Benchtop
High Voltage Power Supply

The compact, lightweight design with universal input makes the EPR series ideal for versatile laboratory use.

SK series

SK series

Voltage Range
0.3 to 10 kV
Rise time
15 nsec
High-voltage Pulse Generator

Compact, high-power design optimized for driving low-impedance loads.

SKS series

SKS series

Voltage Range
10 kV
Rise time
20 nsec
High-speed High-voltage Pulse Generator

Supports high-speed operation with repetition frequencies up to 50 kHz.

AMPS series

AMPS series

Voltage Range
±0.6 to ±30 kV
Current
±0.02 to ±2 A
Power
0.4 to 1.2 kW
Ultra-high-speed High-voltage Amplifier

Ultra high slew rate 1200 V/µs, High-speed response of frequency bandwidth 100 kHz

AMP series

AMP series

Voltage Range
±0.6 to ±40 kV
Current
±0.01 to ±2 A
Power
0.1 to 1.2 kW
High-speed High-voltage Amplifier

Slew rate with actual load is as high as 700 V/µs.

AMS/AMT series

AMS/AMT series

Voltage Range
±0.6 to ±10 kV
Current
±2 to ±100 mA
Power
20 to 100 W
Fast response High-voltage Amplifier

Features a high-speed response of 360 V/µs, a DC bias function, and outputs various waveforms that follow the input signal

AMJ series

AMJ series

Voltage Range
±0.5 to ±4 kV
Current
±10 to ±80 mA
Power
20 to 40 W
Compact and Fast Response
High voltage Amplifier

Offers a high-speed frequency response of up to 75 kHz and a DC bias function.

REK/REKJ series

REK/REKJ series

Voltage Range
6 to 1500 V
Current
1.2 to 1200 A
Power
0.77 to 15 kW
Versatile, High-performance
DC power supply

A compact, high-power design featuring active Power Factor Correction (PFC) and universal input for versatile operation.

TB series

TB series

Voltage Range
35 to 1000 V
Current
1 to 108 A
Power
360 W, 720 W, 1080 W
Wide-Range Programmable
DC Power Supply

Features a variable-range output (Turbo function) and a compact design

R4K-80 series

R4K-80 series

Voltage Range
16 to 320 V
Current
0.5 to 10 A
Power
80 W
Ultra-Slim DC Power Supply with 4-digit Display

Various models for output current control in 0.1 mA increments

R4G/R4GN series

R4G/R4GN series

Voltage Range
6 to 650 V
Current
0.1 to 10 A
Power
12 to 180 W
A Compact, High-Resolution
Linear DC Power Supply

High resolution, ultra-low noise, and digital interface

AC + DC

DRS series

DRS series

Output Power
Up to 2000 VA
Voltage Range
155 / 310 Vac
Frequency
1 to 550 Hz
Programmable AC Power Source

High power output and simple operation in a compact footprint.