KIKUSUI TOS5402 AC Hipot and Insulation Resistance Tester
The KIKUSUI TOS5402 is an electrical safety tester combining 5 kV AC withstand-voltage testing with insulation-resistance measurement for R&D, quality assurance, certification, and production-line inspection.
The AC withstand-voltage section provides up to 5 kV, 100 mA, and 500 VA. A high-efficiency PWM switching amplifier helps maintain stable high-voltage output against AC line-voltage variations, while discharge detection enables additional monitoring for momentary, arc, and corona-type discharge events.
5 kV / 100 mA
500 VA maximum rated AC withstand-voltage output
25–1000 Vdc IR
Programmable insulation-resistance test voltage
Discharge Detection
Adjustable sensitivity for momentary, arc, and corona discharge detection
7-inch Touchscreen
Touch-panel operation with settings, diagrams, and test information
LAN with LXI support, USB, and RS232C are provided as standard for integration into automated inspection systems. Faster output control and measurement, programmable test timing, PASS/FAIL judgment, and external I/O support production and laboratory electrical-safety workflows.
5 kV / 100 mA AC Hipot Testing
The TOS5402 provides AC withstand-voltage testing up to 5 kV with a maximum rated current of 100 mA and maximum rated output of 500 VA.
Insulation Resistance Testing
Insulation-resistance testing uses programmable negative-polarity DC output from 25 V to 1000 V with a maximum rated current of 1 mA.
High-Efficiency PWM Output
A PWM switching high-voltage amplifier helps stabilize AC test voltage against input-line fluctuations and supports consistent safety-test conditions.
Adjustable Discharge Detection
Separate discharge detection can identify momentary discharges and high-frequency discharge components, including arc and corona events, with selectable detection sensitivity.
7-Inch Touch Panel
The touchscreen displays test parameters together with graphical information and diagrams to simplify test setup and operation.
Flexible Current Judgment
Upper and lower current limits support PASS/FAIL judgment during AC withstand-voltage testing, with measured current ranging from 0.00 mA to 110 mA.
Faster Test Cycle Control
Fast output control and measurement help reduce test cycle time. AC testing also supports phase-shifted waveform start conditions for applicable cycle-based tests.
LAN / USB / RS232C Standard
Standard LAN, USB, and RS232C interfaces support remote operation and integration into automated safety-test systems. LAN communication is LXI compliant.
Insulation-Test Forced Discharge
After insulation-resistance testing, the TOS5402 provides a forced-discharge function to discharge capacitance connected to the test output.
Start Long Safety Function
The Start Long function can require the START button to be held before a test begins, helping reduce unintended test starts.
AC withstand-voltage testing of electrical and electronic products
Insulation-resistance testing of electrical equipment and components
Production-line electrical safety inspection
R&D electrical safety verification
Quality assurance and outgoing inspection
Certification and compliance test facilities
Automated PASS/FAIL electrical safety test systems
Arc and corona discharge-sensitive AC withstand-voltage evaluation
TOS5402 Specifications
| Test Functions | AC Withstand Voltage / Insulation Resistance |
|---|---|
| AC Hipot Output Range | 0.05 kV to 5.00 kV |
| AC Maximum Rated Voltage | 5 kV |
| AC Maximum Rated Current | 100 mA at output voltage of 0.5 kV or higher |
| AC Maximum Rated Output | 500 VA (5 kV / 100 mA) |
| AC Output Frequency | 50 Hz / 60 Hz |
| AC Output Method | PWM switching |
| AC Voltage Setting Resolution | 1 V |
| AC Current Measurement Range | 0.00 mA to 110 mA |
| Discharge Detection | LPF / HPF selectable detection with adjustable sensitivity |
| Insulation Resistance Test Voltage | 25 Vdc to 1000 Vdc, negative polarity |
| IR Voltage Setting Resolution | 1 V |
| IR Maximum Rated Load | 1 W (-1000 Vdc / 1 mA) |
| IR Maximum Rated Current | 1 mA |
| Verified IR Measurement Range | 0.001 MΩ to 10.000 GΩ |
| IR Forced Discharge | Approx. 25 kΩ discharge resistance; up to 2 µF specified for discharge within 2 seconds |
| Display | 7-inch touch panel |
| Standard Interfaces | LAN / USB / RS232C |
| AC Input | 100 Vac to 240 Vac nominal (90 Vac to 250 Vac allowable) |
| Dimensions | 320 × 132 × 350 mm (12.6 × 5.2 × 13.78 in) |
| Weight | Approx. 15 kg (33.07 lb) |
Test Control and Automation
| AC Current Judgment | Upper / Lower / PASS judgment |
|---|---|
| AC Upper Limit Range | 0.01 mA to 110.00 mA |
| AC Lower Limit Range | 0.00 mA to 109.99 mA or OFF |
| Discharge Detection — LPF | Fast / Medium / Slow |
| Discharge Detection — HPF | High / Medium / Low sensitivity |
| AC Rise Time | 0.1 s to 100 s or OFF |
| AC Test Time | 0.1 s to 1000 s or OFF; cycle-based setting also supported |
| IR Rise Time | 0.1 s to 100 s or OFF |
| IR Fall Time | 0.1 s to 100 s or OFF when PASS judgment occurs |
| IR Judgment Limits |
Upper: 0.001 MΩ to 10.000 GΩ Lower: 0.000 MΩ to 9.999 GΩ |
| LAN | LXI-compliant network interface |
| USB | USB 2.0 / USB-TMC |
| RS232C | Standard remote-control interface |
| External System Control | SIGNAL I/O available for automated test-system integration |
