Insulation testing device 90-4K

semi-automaticfully-automaticfor electrical insulation

Short description
An insulation resistance tester applies voltage to the wiring of a device to verify insulation resistance. The higher the measured insulation resistance in ohms, the better the insulation. The measurement assesses the resistive component of insulation and contributes to the safety of equipment and electrical devices.

Function and significance
Insulation tests are typically performed with direct voltage (commonly 500 V DC) between live and non-live parts of the object under test. The measurement is especially important for Class II devices (which do not have a protective conductor) but is also used for Class I devices. Insulation faults can lead to leakage currents and hazardous situations; therefore tests before placing on the market and during periodic inspections are essential.

Applications

• Workshop, service, maintenance and repair
• Laboratory and material testing (e.g., insulating materials, solar industry)
• Series production and test benches
• Single-station testing as well as partial or fully automated test systems

Product overview (selection)

• Insulation resistance devices 90-2E — 500 VDC
• Insulation resistance devices 90-4K — 500…550 VDC / 500…1000 VDC

Use cases & features
The test instruments from bott are designed for flexible deployment: as single-station solutions or as modular components in semi- or fully automated test systems. Devices are supplied in base configurations tailored to typical use cases and can be adapted to changed or extended requirements through accessories (e.g., automation, integration into test lines).

Technical characteristics / specifications

• Test voltage: typically 500 V DC (depending on model also extended ranges, e.g., 500…1000 V DC)
• Typical measurement task: determination of the resistive component of insulation (insulation resistance)
• Applicable limits: commonly in the range 1 … 100 MΩ (depending on application and standard)
• Applicability: tests on Class I and II devices; particularly relevant for Class II
• Use environments: workshop, laboratory, production, material testing
• System use: usable as a standalone device or in semi-/fully automated test systems; modularly extendable via accessories
• Measurement principle: high-resistance measurement technology for capturing insulation resistances