ABB REX521GHHPSH50G Protection Relay

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REX521GHHPSH50G is a protective relay produced by ABB, mainly used for protection, control, measurement, and monitoring in medium voltage networks. Here is its detailed information:

Electrical parameter protection: Integrated overcurrent, overvoltage, undervoltage, and leakage protection functions, current protection range covers 100-400A, voltage protection threshold can be configured to adapt to different working conditions.

Fault diagnosis capability: equipped with fault type and location indication function, real-time display of fault codes through HMI interface, which can shorten maintenance response time.

Thermal overload protection: Built in thermal model algorithm, combined with current and temperature data to achieve motor thermal state monitoring, preventing insulation damage caused by overload.

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