Description
Product Overview
The GRV8-03 to 08 series 3-phase voltage relay is an essential control component designed for continuous monitoring of 3-phase networks. By detecting overvoltage, undervoltage, phase failure, phase sequence, and asymmetry, this true RMS voltage relay ensures the safe operation of moving equipment and industrial machinery. As a professional R&D, production, sales, and service supplier, GEYA engineered the GRV8 series to deliver precise voltage protection in a compact 1-module DIN rail footprint.
Applications & Features
- Control for connection of moving equipment (site equipment, agricultural equipment, refrigerated trucks).
- Protection of persons and equipment against the consequences of reverse running.
- Normal/emergency power supply switching operations.
- Protection against the risk of a driving load (phase failure).
- Controls its own supply voltage with True RMS measurement.
Model Comparison: M460 vs M265
Selecting the correct model depends on your wiring system. The M460 is designed for 3-wire systems (L1-L2-L3) monitoring phase-to-phase (P-P) voltages ranging from 220V to 460VAC. Conversely, the M265 is engineered for 4-wire systems (L1-L2-L3-N) monitoring phase-to-neutral (P-N) voltages from 127V to 265VAC. Both models share identical physical dimensions and output ratings but cater to different grid configurations.
Specification
| Function Code | Overvoltage | Undervoltage | Asymmetry | Delay Time | Phase Sequence & Failure |
|---|---|---|---|---|---|
| GRV8-03 | ● | ● | – | – | ● |
| GRV8-04 | 2%…20% | -20%…-2% | – | 0.1s…10s | ● |
| GRV8-05 | 2%…20% | -20%…-2% | 8% | 0.1s…10s | ● |
| GRV8-06 | 2%…20% | -20%…-2% | 5%…15% | 2s | ● |
| GRV8-07 | – | – | 5%…15% | 0.1s…10s | ● |
| GRV8-08 | – | – | 8% | 2s | ● |
