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ABB REX521GHHPSH51G Feeder Protection Relay

Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)

Key Specifications

Material:

Other, Global universal model

Condition:

Other, Global universal model

Task:

Other, Global universal model

Guizhou Yuanmiao Automation Equipment Co., Ltd.

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Material Other, Global universal model

Condition Other, Global universal model

Task Other, Global universal model

Mathematical Model Other, Global universal model

Signal Other, Global universal model

Customized Non-Customized

Structure Other, Global universal model

Dimensions 160mm× 250mm× 120mm

Operating temperature range -40°C to +70°C

Humidity 5%–95% (non-condensing)

The ABB REX521GHHPSH51G is a feeder protection relay manufactured by ABB, belonging to the REX521 series.

Functional Features

High-precision Protection: Accurately detects and locates faults on feeders to safeguard the safe operation of power systems.
Multifunctionality: Integrates multiple protection functions, such as overcurrent protection, distance protection, ground fault protection, etc., to meet protection needs in different scenarios.
Rapid Response: Quickly cuts off the circuit in case of faults to prevent larger losses from fault expansion.
Communication Capability: Equipped with communication interfaces, supporting data exchange and remote monitoring with other devices or monitoring systems to enable remote operation and management.
High Reliability: Ensures long-term stable operation in harsh environmental conditions, guaranteeing the reliability of power systems.
Intelligence: Adopts intelligent algorithms and logic to automatically identify the operating status of power systems and make corresponding protection and control decisions based on real-time conditions.
Modular Design: Facilitates installation, maintenance, and upgrading, enhancing product flexibility and scalability.
Standards Compliance: Complies with relevant standards such as the International Electrotechnical Commission (IEC), ensuring product quality and performance meet international levels.

Technical Parameters

Protection Functions: Features overcurrent protection, ground fault protection, over/undervoltage protection, directional overcurrent protection, motor thermal protection, etc., while acting as backup protection for power transformers and line protection relays.
Inputs: Supports energized inputs from traditional current and voltage transformers, with optional versions featuring current and voltage sensor inputs.
Relay Type: Suitable for protection of medium and large three-phase AC motors and feeders (incoming and outgoing), applicable to solidly grounded, resistively grounded, and resonant grounding systems.
Communication: Equipped with integrated communication interfaces for easy system integration, with standard configurations ensuring seamless network compatibility.
Operating Voltage: Nominal voltages include 24V DC, 48V DC, or 110V DC.
Environmental Conditions: Operating temperature range: -40°C to +70°C; humidity: 5%–95% (non-condensing).
Dimensions: 160mm (width) × 250mm (height) × 120mm (depth).

Application Fields

Public Substations and Industrial Power Distribution Systems: Provides basic protection for busbars and feeders, including incoming and outgoing feeders, motor feeders, and substation protection.
Medium-voltage Power Grids: Used for protection, control, measurement, and monitoring, as well as protection of medium and large three-phase AC motors in circuit breaker-controlled motor drives. It can also serve as backup protection for power transformers and high-voltage line protection relays.

Product Tags: REX521GHHPSH51G , REX521BBHGLB01C , 1MRK002496-AC