Hipot Tester



160,000 (税込:176,000

  • Hipot (Withstanding voltage): AC 5 kV/100 mA
  • High-precision measurement ± 1.5 % of reading
  • Rise/Fall time control function
  • Key lock function and Protection cover on the panel operation
  • Limit voltage function
  • Monitoring output voltage function
  • Equipped with USB and RS232C interface as standard


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SKU: TOS5200
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A Perfect AC Hipot Test solution, with 500 VA capacity and equipped PWM amplifier at very affordable investment

TOS5200 is designated model for AC Hipot Test with 500 VA capacity and 200 mA short circuit current output capability. With equipped PWM amplifier, this model can provide a stable & reliable output without being affected by AC power line. Therefore, it is a perfect AC Hipot Test solution for electronic equipment or devices based upon IEC, EN, UL, VDE and JIS etc. requirement. As TOS5200 maintains most of all features of our upper class model for AC Hipot Test, it achieves the superb cost / performance ratio for those who needs 200 VA or 500 VA capacity, or both. Also, as it equips Interlock function together with other safety features, operator can carry out the Test with higher current value in safe.


Comparison with the Kikusui previous model

Specification comparison itemTOS5200TOS5050A
TestvoltageOutput methodPWM switching amp systemSlide transformer method
Distortion3 % or lessAs per commercial power supply waveform
Frequency50 Hz or 60 HzSynchronized with commercial power supply waveform
Output voltage waveformSineCommercial power supply waveform
Voltage regulation10 % or less15 % or less
Input voltage variation±0.3 %-
Test timeMinimum setting value0.1 s0.5 s
Accuracy±(100 ppm + 20 ms) excluding Fall Time±(100 ppm + 20 ms)
Judgment featureUpper limit settingAC: 0.01 mA to 110 mAAC: 0.1 mA to 110 mA
Lower limit settingAC: 0.01 mA to 110 mAAC: 0.1 mA to 110 mA
Accuracy1.00 mA ≤ i: ±(1.5 % of set),i <1.00 mA: ±(1.5 % of set +30 μA)Upper limit: ±(5 % + 20 μA)
Rise Time and Fall Time control features3-
VoltmeterDisplayDigitalDigital, analog
Measurement accuracy±1.5 % of reading (V>500V)±1.5 % f.s
Voltmeter/AmmeterMeasurement methodTrue rms/mean-valueMean-value/rms value
RS232C InterfacePOWER Switch and all function except Key lockOutput for data, test result
WeightApprox. 14 kg (30.9 lbs)Approx. 15 kg (33.07 lbs)
OtherInput power supply100 Vac to 240 Vac100 V ± 10 %

Highly stable output is realized with PWM Switching Amplifier!

Highly stable output is realized with PWM Switching Amplifier!

Equipped with the PWM switching amplifier system,the TOS5200 realizes highly stable putput without influenced by input form AC line.
A conventional Hipot Tester boosts and outputs the AC line’s input voltage through the use of a slide transformer system With this slide transformer system,input voltage fluctuations will affect the output, preventing test from being performed properly. Since the TOS5200 equips with a high-voltage without being affected by the variation of AC power line,users can perform ‘safe’,’stable’,and highly ‘reliable’ tests with confidence, even in regions with large voltage variations.

Rise time / Fall time control function

Rise time / Fall time control function

The rise time control function isto prevent the excessive stress that is being applied to the EUT (test object). The Hipot (Withstanding voltage) test is conducted to verify the safety performance of the EUT and which test voltage for Hipot (Withstanding voltage) test is applied approximately five to ten times greater than the voltage that handles by the EUT. If a high voltage is applied rapidly with no rise time, the transitional large voltage (current) will be occurred, and it may cause a damage to the EUT. For this reason, safety standards stipulate the procedure of Hipot (Withstanding voltage) test, and the test voltage must be gradually increased to the specified voltage when the test is performed. The rise time control function adopted in the in the TOS5300 Series can set the voltage rise time from 0.1s to 10.0 s (at a resolution of 0.1 s) and also it is capable to set the 50 % (fixed) of the applied test voltage. In addition, the fall time control function enables to decrease the test voltage gradually after the completion of a PASS judgement. The voltage fall time is fixed at 0.1 s (OFF is also selectable).

High-Accuracy = Less measurement error! “+/-1.5 % of reading” versus “+/-1.5 % f.s.”

  • TOS5200:reading: Accuracy is specified against reading value.
  • TOS5050A:f.s: Accuracy is specified against full scale.

When using TOS5200 at 1500 V output measurement, the max error would be 1500 V(reading value) x 1.5 % = 22.5 V On the other hand, when using equipment which specifies its accuracy with “+/- 1.5 % f.s.”, the max error could be 2500 V(max voltage) x 1.5 % =37.5 V (it needs to set the range 0 to 2.5 kV) So, there is 15 V difference of max measurement error at 1500 V output.

Capable of Test Time setting from 0.1 s, which enables to reduce the tact time !

TOS5200 can set the test time from 0.1 sec without sacrificing measu- rement accuracy. This makes test time 5 times faster compared to the TOS5050A (max test time:0.5sec) and it leads to reduce the tact time. Reduction of the tact time leads to improve the productivity, so it has been an issue that reducing the tact time may cause to worsen the measurement accuracy when the test time is faster than measurement respond speed.

Capable of Test Time setting from 0.1 s, which enables to reduce the tact time !

Improved the setting resolution of the leak current by 0.01 mA !

TOS5200 is can set the current limit from0.01 mA to 110 mA.
(TOS5050A: 0.1 mA to 110 mA)

  • Enable to clarify the actual value of device under test (DUT)
  • The setting resolution of the lower limit setting has been improved from the previous model ,it enables to defect the failure more accurately.

REMOTE connector, USB/RS-232C interface, SIGNAL I/O

REMOTE connector and USB interface are provided on the front panel, and RS-232C interface and “SIGNAL I/O” for start/stop operation and signal output are provided on the rear panel as standard.

Memory function for easy setup

All you have to do is press a key and turn the knob in the center of the panel to set the test voltage, judgment value, and test time. Once the test conditions are set, they can be stored in the panel memory(3 sets).

interlocking circuit

The unit is equipped with an interlock function that shuts off the output in conjunction with an external device. To ensure the safety of the operator, the interlock function is activated when the SIGNAL I/O connector pins 1 – 13 on the rear panel of the main unit are opened, and the interlock function is released when short-circuited.

Interlock circuit

Prevents overvoltage from being applied due to incorrect operation and monitors output voltage


This function prevents the test voltage from being set higher than the preset voltage.

Output voltage monitoring function

When the output voltage exceeds the set value (±350V), it shuts down the output and shifts to the protection state.




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