Medium and High Voltage Online Insulation Monitoring Device

Medium and High Voltage Online Insulation Monitoring Device

Monitoring Host  
Power Supply
AC 85-265V 50Hz
Rated Power
<15W
Rated Voltage of Applicable Motor
3kV、6kV、10kV
Applicable Motor Type

Three-Phase Asynchronous (Squirrel-Cage Type, Wound-Rotor Type) and Three-Phase Synchronous

Insulation Resistance Measurement MethodDC Injection Method
Insulation Resistance Measurement Voltage2500VDC
Insulation Resistance Measurement Range1MΩ ~ 2000MΩ, Accuracy < 3%, Pure resistance
2000MΩ ~ 9999MΩ, Accuracy < 5%, Pure resistance
Residual Current Measurement MethodLeakage Current Method
Residual Current Measurement Range
10~2000mA, Configurable
Residual Current Measurement Accuracy<2%
Applicable Frequency for Residual Current
50Hz & 60Hz
Communication MethodRS485-Modbus RTU
Communication Distance20m; Packet Loss Rate < 5%; Bit Error Rate < 1%
Load Capacity of Dry Contact Output
Normally Closed Contact, 250VAC/5A or 30VDC/5A
Operating Environment
-20℃ - 60℃, No Condensation
Storage Environment
-20℃ - 75℃, No Condensation
Applicable Altitude
<2000m
High Voltage Coupler
Internal Resistance of Coupler
10MΩ
Isolation Capability42KV/1min
Operating Environment-20℃ - 60℃, No Condensation
Storage Environment
-20℃ - 75℃, No Condensation
Applicable Altitude
φ80 mm、100mm、120mm、140mm、150mm、160mm、180mm、200mm、240mm、250mm
Zero-sequence Current Transformer (ZCT)
Inner Diameter Size
Primary: 50~800A
Current Range
Secondary: 1/5A
Rated Load≤5VA






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