Its applications range from industrial air compressors, pumps, and motors to refrigeration units and elevators—any situation where a voltage disturbance could lead to equipment failure.
Cause: The internal heatsink temperature has exceeded 85°C.
Failure of one phase, which can cause severe motor damage.
| Specification | GMR-32B / Smart Series Value | | :--- | :--- | | | 200-500VAC (Standard), up to 690VAC (Smart Series) | | Frequency | 50 / 60 Hz | | Rated Control Circuit Voltage | Three-phase 220V, 380V, 400V, 415V, 440V, 460V | | Relay Contact Capacity | 5A at 250VAC (resistive load) | | Voltage Measurement Accuracy | ±1% of reading | | Over/Under Voltage Set Point | Adjustable approx. ±15% of nominal voltage | | Over/Under Voltage Hysteresis | 7V (prevents relay chatter) | | Voltage Imbalance Trip Level | >10% or >20% (model dependent) | | Response Time (Trip Delay) | Phase Loss: 1s / Phase Sequence: 0.1s / Over/Under Voltage: 7s / Imbalance: 5s | | Reset Mode | Automatic (restores function when fault clears) | gmr-32b phase controller manual
Red indicators for "OVER" (overvoltage) and "UNDR" (undervoltage) conditions. Troubleshooting Guide
GMR-32B Phase Controller (or Phase Sequence Relay) is an industrial protective device designed to monitor three-phase power supplies and safeguard equipment like motors and air compressors from electrical faults. Key Features & Functions Comprehensive Fault Detection : Monitors and protects against: Phase Loss : Detects if any of the three phases (R, S, T) are missing. Phase Reversal/Sequence
Instantaneous response to input control changes. 5. Calibration and Onboard Adjustments | Specification | GMR-32B / Smart Series Value
The GMR-32B houses multiple dedicated logic diagnostic functions that protect against specific phase anomalies:
When working with the GMR-32B phase controller, always follow proper safety precautions:
The most frequent cause of "nuisance tripping." Ensure all terminals are tightened securely. Key Features & Functions Comprehensive Fault Detection :
The (also known as a phase monitoring or sequence relay) is a protection device for three-phase systems. It is primarily used to detect faults such as overvoltage, undervoltage, phase loss, and incorrect phase sequence.
Below is a formal technical report drafted to cover the standard operational manual, specifications, and functional overview for this class of GMR Phase/Generator Controllers.
The GMR-32B Phase Controller is a high-precision, industrial-grade power control module. It regulates electrical power to resistive and inductive loads by adjusting the thyristor firing angle. This manual provides comprehensive instructions for installing, wiring, programming, and troubleshooting the GMR-32B unit. 1. Safety Warnings and Precautions
Once the GMR-32B phase controller is installed and configured, follow these operating instructions: