ABB 1SVR630774R3300 three-phase monitoring relay

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1. Product Overview

The ABB 1SVR630774R3300 is a high-performance three-phase monitoring relay used in industrial electrical systems to monitor three-phase voltage, phase loss, phase sequence, and unbalance.
It protects motors and other three-phase equipment from voltage anomalies or phase loss, ensuring safe and stable operation of industrial production equipment.

2. Main Technical Specifications

3. Advantages and Features

1. Comprehensive Three-Phase Monitoring
   Monitors phase sequence, phase loss, over/under voltage, and phase unbalance to protect motors.

2. Adjustable Delay
   Prevents false tripping due to transient voltage fluctuations, enhancing system reliability.

3. Compact Design
   DIN rail mounting, saves space and facilitates distribution cabinet layout.

4. High Reliability
   Industrial-grade design with high temperature and vibration resistance, providing long-term stability.

5. Easy Integration
   Can be integrated with PLC or automation systems for remote monitoring.

4. Typical Applications

• Industrial three-phase motor protection

• Electrical monitoring in distribution and control cabinets

• Factory automation production lines

• Protection for pumps, fans, compressors, and other three-phase equipment

• Three-phase power monitoring in HVAC systems

Used for voltage monitoring, phase loss prevention, and protecting equipment from abnormal voltage conditions.

5. Installation and Usage Notes

1. Confirm voltage rating and monitoring requirements before installation.

2. Disconnect power during wiring and maintenance for safety.

3. Install in dry, ventilated environments, free from corrosive gases.

4. Periodically check relay contact status and terminal tightness.

5. Commissioning and maintenance should be performed by qualified electrical personnel.

The structure and details of the product：

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