01、For which products is the equipment used for insulation testing?
Used for dielectric strength verification of miniature circuit breakers (MCB) and low-voltage apparatus such as circuit breakers, disconnectors, and contactors, meeting relevant IEC 60947-2 / IEC 60898 / GB standards.
02、What are the test voltage and judgment criteria?
Applies 1500V power-frequency AC between specified test points and sustains it for 1 second, using 25mA as the leakage current failure threshold, and detects destructive discharges such as breakdown/flashover; any abnormality results in a fail verdict.
03、Which test points are covered? Are there any blind spots?
Covers multiple combinations including between upper/lower terminals in OFF state, between adjacent terminals in ON state, and terminal-to-ground in ON state, comprehensively evaluating insulation safety margin under different operating conditions, with no insulation blind spots.
04、How is equipment safety ensured?
Adopts the Kikusui TOS5200 industrial-grade withstand voltage tester, with high-voltage cables rated >5kV and high-voltage relays >8kV; isolation and interlock design of the high-voltage circuit ensures operational safety.
05、 How are non-conforming products handled?
Test anomalies trigger immediate alarm and shutdown with a fail verdict; non-conforming products do not proceed to the next process. Withstand voltage records are retained for customer audits, safety regulation re-inspections, or quality traceability.
06、Does it meet export certification requirements?
Meets self-inspection and conformity verification prior to safety certifications such as CE and CB, and is also suitable for insulation structure verification and process parameter exploration during new product development.
