Technical Specifications For AC/DC IT systems; Adjustable insulation resistance threshold; Relay alarm output; Operating temperature -20°C ~ +60°C.
Functional Features Continuous insulation resistance measurement; Pre-alarm and fault alarm; Fault memory; Test function; Relay contact output.
Application Scenarios Medical power supply, marine electrical system, mining, industrial IT network, uninterruptible power supply systems.
Performance Parameters Wide measuring range; Adjustable response threshold; LED status indication.
Structural Characteristics DIN rail mount plastic housing, front panel setting knobs, status LEDs and screw terminals.
Working Principle Inject measuring signal into the ungrounded IT network, calculate insulation resistance to earth. When insulation resistance drops below threshold, trigger alarm relay output.
Installation Requirements Install on standard DIN rail in control cabinet; Connect to monitored IT system; Ensure correct wiring of measuring circuit.
Usage Notes Do not use in earthed TN power systems. Perform periodic test function check.
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