Overvoltage occurs when the supply voltage rises above the rated voltage of the motor or equipment and this can cause excessive current to flow as well as creating excessive voltage stresses. In both cases, the electrical insulation system inside the motor or equipment can be degraded reducing life and potentially causing damage.
Typical causes of Overvoltage are:
- Poor regulation of the power source from a utility company,
- Over-sized transformers
- Uneven or varying circuit loading
- Wiring errors
- Electrical insulation or isolation failures.
Installing a Three-phase voltage monitoring relay is the most cost-effective means of protecting motors and equipment against costly damage due to Overvoltage.
The Three-phase monitoring relay (also known as a phase failure relay) can protect against premature equipment failure by monitoring for several common fault conditions including overvoltage. A Three-phase monitor relay notifies of a fault condition and offers control contacts to turn off equipment or motors before damage occurs. These relays provide a clear indication of the fault present for rapid troubleshooting and reduced downtime.
Key Product recommendation: LXPRC/S
