Three-Phase Voltage Monitoring Relay Reliable Protection three-Phase Systems voltage relay over-voltage protection relay
Three-Phase Voltage Monitoring Relay, your robust solution for safeguarding critical industrial and commercial equipment against voltage irregularities. This compact yet powerful relay provides essential protection, ensuring your three-phase systems operate efficiently and safely.
Description
Key Features:
Comprehensive Protection: This relay monitors your three-phase power supply, offering reliable protection against common faults, including:
Under-voltage:Detects and protects against low voltage levels that can damage motors and sensitive electronics.
Over-voltage:Shields your equipment from high voltage spikes, preventing insulation breakdown and component failure.
Phase Loss (depending on the specific model): Instantly detects the loss of a phase, preventing motor overheating and burnout.
Phase Asymmetry (depending on the specific model):Â Monitors voltage unbalance between phases, crucial for optimal motor performance and longevity.
Incorrect Phase Sequence (depending on the specific model): Ensures correct motor rotation, preventing equipment damage in sequence-sensitive applications.
Precision and Adjustment:
Selectable Voltage Options: Compatible with various three-phase systems (e.g., AC220V~460V 50Hz/60Hz, depending on model and specific selectable options), offering flexibility for different electrical setups.
Adjustable Thresholds:Easily set over-voltage, under-voltage, and asymmetry thresholds via intuitive front-panel knobs.
Adjustable Time Delay (e.g., 0.1s – 10s):Features a broad and precise time delay adjustment, preventing nuisance tripping from temporary voltage fluctuations. The high time delay accuracy ensures reliable operation.
Specification
| GRV8-03X GRV8-04X GRV8-05X GRV8-06X GRV8-07X GRV8-08X | |||||||||
| M460 Monitor L-L voltage (3-phase 3-wire system) |
M265 monitors the L-N voltage (3-phase 4-wire system) |
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| Function | Three-phase voltage monitoring (anti-harmonic) | ||||||||
| Rated working voltage options: | 220 – 230 – 240 – 380 – 40 | 127 – 132 – 138 – 220 – 230; | |||||||
| Measurement frequency range | 45Hz-65Hz | ||||||||
| Measurement range | 176V-552V | 101V-318V | |||||||
| Action delay time | 0.1 second – 10 second adjustable | ||||||||
| Voltage measurement error | ≤1% | ||||||||
| Knob setting accuracy | 10% | ||||||||
| Reset time | 1 s | ||||||||
| Output contact | Group conversion (one open, one closed) | ||||||||
| Output mode | Ith:10A;AC-15:Ue/le:250V/2.5A | ||||||||
| Mechanical pressure measurement | 10000000 cycles | ||||||||
| Operating environment temperature | -35°C~+75°C | ||||||||
| Connection capability | 1×2.5mm2 or 2×1.5mm2Â Â Â Â Â Â Â Â Â 0.4N.m | ||||||||
Applications
Application Scenarios:
The Three-Phase Voltage Monitoring Relay is essential for various common industrial and commercial applications, ensuring uninterrupted operation in scenarios like:
WATER PUMP:Protects pump motors from low-voltage damage and overheating due to phase issues.
AIR COMPRESSOR: Guards the compressor motor and control circuit from erratic voltage supplies.
AC UNIT:Ensures correct phase and voltage for optimal performance of large air conditioning units.
CNC MACHINE: Safeguards sensitive CNC controllers and servo drives from power quality problems.
BLOWER FAN: Protects powerful blower fan motors from burnout.
ELEVATOR ROOM: Crucial for the safe and reliable operation of elevator control panels and hoist motors.
INJECTION MOLDER: Maintains consistent voltage for heating elements and hydraulic pump motors.