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Dielectric withstand test is performed to prevent electric shock and leakage accidents during product use, and to confirm product safety. It is also used to check the function and performance of insulators. For example, CV cables that transport high voltage from generators, wire harnesses and signal cables that transport electrical signals are covered with insulating materials such as plastic and film.

There are two types of insulation tests: insulation resistance tests and voltage resistance tests (dielectric breakdown tests). The insulation resistance test is a test to check if the insulation is properly maintained. The insulation resistance is calculated by applying a certain voltage to the insulated area and measuring the leakage current. A voltage resistance test is a test to check if insulation is not destroyed by applying a high voltage. For each electrical product, the details of the insulation resistance test and the resistance value to be guaranteed are listed.

In order to perform the insulation test, a transformer must be used to create a high voltage. Matsusada Precision has a range of power supply equipment that can be used for insulation resistance testing.

Dielectric withstand test circuit

Dielectric breakdown 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
Low profile and lightweight
High voltage power supply

Digital interface is available. Wide range of over 300 models, Various remote control and monitor functions

AUH series

AUH series

voltage range
150 to 200kV
current
6 to 13.3mA
power
1.2 to 2kW
Ultra high voltage, High power
High Voltage Power Supply

High power of 2 kW, Safety design, Ultra high voltage of maximum 200 kV in the 19-inch rack size

EPR series

EPR series

voltage range
1 to 30 kV
current
1 to 150 mA
power
30 to 150 W
High Power 150 W Benchtop
High Voltage Power Supply

Small and lightweight design with universal input for use anywhere

SK series

SK series

Voltage range
0.3 to 10 kV
Rise time
15 nsec
High speed High voltage pulse power supply

Ultra compact and lightweight design, High power design applicable in low impedance

SKS series

SKS series

Voltage range
10 kV
Rise time
20 nsec
High-Speed High-Voltage Pulse Power Supply

High-speed operation with 50 kHz repetition frequency

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 200 W
Fast response High voltage Amplifier

High speed response 360 V/µs, DC bias function, Various types of output wave forms according to the input wave

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

High speed response 75 kHz, DC bias function

REK/REKJ series

REK/REKJ series

voltage range
6 to 1500 V
current
1 to 1200 A
power
0.77 to 15 kW
Versatile, High-performance
DC power supply

Compact and High power, PFC circuit and universal input, Various operations is available

TB series

TB series

voltage range
35 to 1000 V
current
1 to 108 A
power
360W, 720W, 1080W
Wide range programmable
DC power supply

"Turbo function" installed, Compact, Suppressing voltage/current overshoot

R4K-80 series

R4K-80 series

voltage range
16 to 320 V
current
0.5 to 10 A
power
80 W
Ultra slim, 4-digit, DC Power Supply

Various lineups for output current control at 0.1 mA increment

R4G/R4GN series

R4G/R4GN series

voltage range
6 to 650 V
current
0.1 to 10 A
power
12 to 180 W
Compact and High resolution
Linear DC power supply

High resolution and Ultra low noise, Digital interface

AC + DC

DRS series

DRS series

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

Simple operations and high power in overwhelming compact size