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View full sizeInsulation monitoring
Monitor insulation between high-voltage systems and the chassis
isoEV301 monitors insulation between an electric vehicle’s high-voltage components and the chassis reference, covering the DC side and AC motor side. It detects symmetrical and asymmetrical insulation faults. Fault-side identification is valid only during an alarm when system voltage exceeds 300 V; it is not provided for symmetrical faults. An isolated CAN interface transmits status, alarms and measurements.
Electric-vehicle applicationExplore electric-vehicle insulation monitoringExplore insulation monitoring and fault detection in vehicle high-voltage systems.Explore technical detailsPRODUCT INSIGHTS
Covers the DC side and AC motor side, monitoring insulation between high-voltage components and the chassis.
Detects symmetrical and asymmetrical insulation faults. Fault-side information for asymmetrical faults is valid only during an alarm when system voltage exceeds 300 V.
An isolated CAN interface transmits status, alarms and measurements for system integration.
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TECHNICAL SPECIFICATIONS
12 VDC (±20%); operating current: 100 mA; power consumption: <2 W.
AC: 0–1,000 V (peak); DC: 0–1,000 V.
Insulation response value: 100 kΩ–1 MΩ (default 100 kΩ), accuracy ±5%; alarm value: five times the response value (default 500 kΩ), accuracy ±5%.
System leakage capacitance: ≤2 μF; measuring voltage: ±40 V; measuring current: ±33 μA (RF=0); 50 Hz impedance and internal DC resistance: each ≥1.2 MΩ.
Isolated CAN communication at 250 kbps.
For system voltages above 300 V, the unit can report the side of an asymmetrical insulation fault; symmetrical-fault location is not supported.
Select the model and configuration for your supply system, load and installation conditions. Use the applicable product documentation for installation and operation.