ABB REF610A55HCNP Feeder Protection Relay

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Product Overview:
The ABB REF610A55HCNP is a high-performance feeder protection relay designed for medium-voltage power systems. It monitors feeder line current, voltage, and fault conditions in real time, providing fast and reliable overcurrent, earth fault, and differential protection. With integrated communication functionality, it supports industrial protocols such as IEC 61850, allowing seamless integration with automation systems and enhancing the safety and reliability of distribution networks.

Technical Specifications:

• Model: REF610A55HCNP

• Type: Feeder Protection Relay

• Rated Voltage: 3×110–690 V AC / DC

• Rated Current: 5 A / 1 A CT input

• Protection Functions: Overcurrent, earth fault, over/under voltage, differential protection

• Communication Interfaces: IEC 61850, Modbus RTU, Modbus TCP

• Response Time: ≤ 20 ms

• Operating Temperature: -25–60°C

• Mounting: Panel-mounted

• Certification: IEC 60255, CE

Advantages and Features:

1. High-Speed Protection: Millisecond-level response ensures fast line disconnection and minimizes equipment damage.

2. Multi-Functional Integration: Combines overcurrent, earth fault, differential, and over/under voltage protection, reducing additional equipment requirements.

3. Strong Communication Compatibility: Supports IEC 61850, Modbus, and other industrial protocols for easy system integration and remote monitoring.

4. Industrial-Grade Reliability: Resistant to vibration and high temperatures, suitable for complex electrical environments.

5. Intuitive Operation: Graphical interface displays electrical parameters and alarms for easy operation and maintenance.

Applications:

• Distribution feeder protection

• Industrial plants and power plant medium-voltage feeders

• Urban distribution network automation

• Power monitoring and remote control systems

• Industrial and infrastructure power systems

Precautions:

1. Ensure voltage rating, CT ratio, and system interface match before installation.

2. Avoid long-term operation in high humidity, corrosive, or high-interference environments.

3. Regularly check wiring and relay status to ensure reliable protection.

4. Do not disassemble the relay without authorization to prevent compromising system safety and protection performance.

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