ABB REX521GHHPSH07G feeder comprehensive protection relay

ABB REX521GHHPSH07G feeder comprehensive protection relay

REX521GHHPSH07G is a feeder comprehensive protection relay device produced by ABB. REX521GHHPSH07G provides protection, control, measurement, and status monitoring for medium voltage distribution network feeders and large and medium-sized three-phase AC motors; When the circuit or motor experiences overload, short circuit, grounding fault, overvoltage or undervoltage and other abnormal working conditions, quickly issue a trip command to cut off the fault circuit, complete data acquisition, fault recording, event recording, and can also serve as backup protection for power transformers and high-voltage lines. REX521GHHPSH07G is used to ensure the safe and stable operation of medium voltage distribution systems.

Product features

1.  Multi processor hardware architecture, integrated protection, measurement, and control functions, H07 version specifically optimized for protection of large and medium-sized motors.
2. Support the integration of traditional current and voltage transformers, and adapt to various grounding systems in power grids: ungrounded, resonant grounded, resistance grounded, and direct grounded systems.
3. Rich protection logic: three-stage overcurrent protection, zero sequence grounding protection, overvoltage/undervoltage protection, motor start protection, and can be configured with automatic reclosing.
4.  Local human-machine interface, with backlit LCD display screen and three color status indicator lights, allowing on-site viewing of measurement values, fault information, and event alarms.
5. Built in fault recording and event sequence recording functions, facilitating fault tracing and troubleshooting.
6. Equipped with a photoelectric isolation serial communication interface, it can be connected to the substation automation system to achieve remote monitoring.
7. Panel installation, resistant to wide temperature environments, suitable for harsh industrial power distribution sites
8. Supports programmable logic and can flexibly adapt to single bus distribution schemes.

ABB REX521GHHPSH07G feeder comprehensive protection relay

Core service capability

1. Replacement of discontinued parts: Provide original factory compatible or verified replacement solutions for discontinued or obsolete models to reduce system upgrade and renovation costs
2. Quick response supply: sufficient inventory of commonly used spare parts, priority response to urgent inquiries, and shortened downtime
3. Full chain quality assurance: strict procurement channel management and quality inspection, traceability of key components
4. One stop system matching: covering the integrated procurement needs of system level spare parts from control modules to drive devices

Main product range

ABB REX521GHHPSH07G feeder comprehensive protection relay

Main brand

 ————————Shenzhen Changxin Automation Equipment Co Ltd -————————

Products that have been released are welcome for consultation. Due to the wide variety of models, we were unable to upload physical images one by one!

Parameter Specifications