ABB REX521GHHPLH07G Feeder Protection Relay

ABB REX521GHHPLH07G Product Introduction & Technical Parameters
Brand: ABB
Model: REX521GHHPLH07G
Product Name: Feeder Protection Relay / Integrated Motor Protection Relay
Dimensions: Approx. 148.8 mm (W) × 265.9 mm (H) × 235 mm (D) (1/3 19” rack, 6U frame)
Weight: Approx. 1.18 kg (net)
Country of Origin: Germany
HS Code (Customs Code): 85389090 (Electrical protection/relay equipment for power systems)
Temperature Parameters:
Operating Temperature: -25°C to +70°C
Storage Temperature: -40°C to +85°C
Relative Humidity: 5%–95% non-condensing

Input:
Power Supply: Wide-range 24–265 V AC/DC or 48–265 V DC auxiliary power
Current Inputs: 3-phase + residual current (1A / 5A nominal, via external CTs)
Voltage Inputs: 3-phase voltage monitoring (3.3–36 kV rated)
Digital Inputs: 9 configurable isolated binary inputs
Frequency: 50 / 60 Hz compatible

Output:
Power Outputs: 4 high-speed power relay outputs
Signaling Outputs: 2 programmable signal relay outputs
Internal Fault Output: Dedicated relay fault indication
Communication Output: RS-485 (SPA, Modbus RTU); optional Ethernet (IEC 61850, DNP3, Modbus TCP)
Status Indicators: LED diagnostics for power, operation, and fault conditions
Features:
Comprehensive protection: Overcurrent, earth fault, short-circuit, overload, undervoltage, and phase imbalance protection
Advanced self-diagnosis and continuous relay health monitoring
Circuit breaker wear, trip circuit supervision, and operation counter functions
High-precision measurement and data logging for grid analysis
Galvanic isolation between field circuits and logic electronics
Compact 19” rack/panel mount design for easy installation
Non-volatile memory for settings retention during power loss
Multilingual HMI interface with front-panel keypad and display
Compliance with IEC 60255, ANSI/IEEE C37.2, CE, UL, and RoHS standards
Wide compatibility with medium-voltage distribution and motor control systems