ST5520 Insulation Resistance Tester
- ModelST5520
- AttributesInsulation Resistance Tester
- Category HIOKI > Insulation Resistance Tester
- BrandHIOKI
- DescriptionAchieves high-speed insulation resistance testing: judgment as fast as 50 ms, rapid release of residual voltage, freely selectable test voltage 25-1000 V, contact check function and short-circuit check function.
Detailed Introduction Technical Documents
Achieves "High-Speed" Insulation Resistance Testing
● High-speed judgment as fast as 50ms
● Fast residual voltage discharge
● Arbitrarily adjustable test voltage (25~1000V with 1V resolution)
● Contact check function (prevents misjudgment caused by poor contact)
● Short circuit check function (prevents non-conforming products from entering the market)
The main unit cannot perform measurement independently. Please purchase test leads separately according to your measurement requirements.






