Woodward MRU3-11D Voltage Relay

Product Introduction

The Woodward MRU3-11D is an industrial-grade voltage relay designed to provide precise voltage monitoring and protection in electrical systems. It is widely used for controlling and protecting generators, motors, and industrial electrical networks by detecting overvoltage and undervoltage conditions, ensuring operational safety and system stability.

This relay features robust construction and reliable sensing technology suitable for harsh industrial environments. It enables rapid response to voltage anomalies, preventing equipment damage and maintaining uninterrupted operation of critical power systems.

Product Specifications

Product Applications

• Overvoltage and undervoltage protection for generators and motors

• Industrial power system monitoring and safety

• Voltage regulation in power distribution networks

• Backup and emergency power systems

• Integration with industrial control panels for protective actions

• Voltage monitoring in renewable and hybrid energy systems

• Preventing equipment damage due to abnormal voltage conditions

Product Advantages

• Precise Voltage Monitoring: Provides accurate detection of voltage deviations.

• Adjustable Settings: Configurable trip voltage and response time.

• Fast Response: Rapid detection of abnormal voltage conditions ensures protection.

• Industrial Reliability: Designed for continuous operation in harsh environments.

• Versatile Installation: Suitable for panel or DIN rail mounting.

• Compact Design: Moderate size (150 × 100 × 65 mm) suitable for control panels.

• Integrated Protection: Prevents overvoltage or undervoltage damage to equipment.

• Wide Compatibility: Works with various AC systems from 100–600 VAC.

FAQ

1. What is the primary function of the MRU3-11D?
   It monitors AC voltage and provides protective trips for overvoltage and undervoltage conditions.

2. What voltage range does it support?
   Typically 100–600 VAC, depending on the system configuration.

3. How quickly does it respond to abnormal voltage?
   Trip time is adjustable, typically between 0.1 and 2 seconds.

4. Can the trip voltage be customized?
   Yes, both overvoltage and undervoltage set points are adjustable.

5. What type of output contacts does the relay provide?
   Normally open (NO) and normally closed (NC) relay contacts.

6. Is it suitable for generator applications?
   Yes, it can protect both synchronous and asynchronous generators.

7. Can it operate in harsh industrial environments?
   Yes, rated for −20°C to +60°C operational temperature and IP20 enclosure.

8. Can it be mounted on a DIN rail?
   Yes, it supports panel or DIN rail mounting.

9. Does it provide protection for motors?
   Yes, it prevents damage to motors caused by abnormal voltage.

10. Can it be integrated into a monitoring system?
    Yes, the relay can be connected to industrial control panels for protective actions and system monitoring.

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