Voltage Monitoring Relay Working Principle

The 202 200 sp voltage monitor is designed to protect single phase motors regardless of size.

Voltage monitoring relay working principle. There are different models for different types of inputs. 3 30 v 6 60 v 30 300 v and 60 600 v. The relays are effectively utilized for protection of refrigerating compressor air conditioning and other equipment with. The power supply is given to the coil through the contacts of the load and the control switch.

Voltage relays identify overvoltage undervoltage or both. Protective relays and monitoring relays may be categorized as a voltage sensitive relay power phase sensitive relay current sensitive relay and frequency sensitive relay. The voltage monitoring relay cm ess m has 2 c o contacts. The inner section of the relay is shown in the figure below.

0 25 in male quick connect. Relay is a switch which senses fault in a system and once fault is sensed by the relay it issues trip command to the circuit breaker cb to isolate the faulty section of the network from the healthy section. The small power relay has only one contacts and the high power relay has two contacts for opening the switch. Protective and monitoring relays could fall into one of several categories.

The 202 series is a 3 phase auto ranging dual range voltage monitor that protects. The unit is adjusted with potentiometers and switches on the top of the unit. Description of operation example of a k8dt vs relay for voltage monitoring 1. Abb s cm mps n three phase monitoring relays for rated voltage levels up to 820 v ac and 400 hz offer maximum flexibility and control.

Gic offers a variety of voltage monitoring relays that are built for the sole purpose of protecting your equipment against the damaging effects of abnormal voltage conditions and fluctuations. Three phase voltage monitoring relays three phase multifunction voltage sensitive relays are designed for protecting three phase voltage equipment from impermissible circuit voltage surges phase breaks phase imbalance phase adherence and phase sequence violation. The relay detects the abnormal condition by continuously monitoring electrical quantities which are different. It has an iron core which is wound by a control coil.

Simple and effective monitoring eaton s voltage monitoring relays are solid state protective relays that automatically operate when one or more phases of the three phase supply is lost or when the phase sequence is reversed. One device includes 4 measuring ranges. 5 measuring and monitoring relays that conform to international safety standards are necessary for information on applicable standards refer to specific product datasheets.