Related Manuals for CHINT NXR-25
Summarization of Contents
Safety Warning
Safety Precautions for Installation and Operation
Key safety guidelines for installation, maintenance, and operation, emphasizing professional handling and avoiding hazardous environments.
Main Technical Parameters
Environmental Conditions
Details ambient temperature, humidity, altitude, and pollution class requirements for optimal relay performance.
Technical Parameters by Model
Lists key features like phase-failure protection, reset types, and current ranges for different NXR models.
Matching Contactor and Mounting Base Specifications
Details compatible contactors and mounting base types for NXR relays.
Rated Voltages and Auxiliary Circuit Specifications
Covers insulation voltage, operating voltage, impulse withstand, and auxiliary circuit parameters.
Fuse Combination and Wire Gauge Recommendations
Provides guidance on selecting appropriate fuses and connecting wire sizes based on setting current ranges.
Installation
Installation Procedures
Step-by-step instructions and diagrams for mounting and connecting the thermal overload relay.
Overall Dimensions and Assembly
Provides detailed physical dimensions for NXR models and illustrates the assembly process with contactors.
Wiring Parameters and Connections
Specifies wiring requirements for main and auxiliary circuits, including torque and wire gauge.
Operation and Commissioning Diagram
Illustrates the operational controls, indicators, and reset functions of the thermal overload relay.
Maintenance and Troubleshooting
Routine Maintenance Schedule
Recommends semi-annual testing and tightening of terminal screws for optimal performance.
Fault Analysis and Resolution
Guides users on diagnosing and fixing common issues like misoperation, non-operation, and burnt circuits.
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