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Understanding the Features of Voltage Monitoring Relays .pdf

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Understanding the Features of Voltage Monitoring Relays
Voltage monitoring relays are basically the solid state and protective relays which operate
automatically when a phase sequence is reversed or when one or more phases in the three phase
supply is lost. Such relays are very helpful to monitor 3-phase voltage and also respond to overcharge or abnormal conditions, pre-selected percentage of phase imbalance in order to protect the
equipment against the voltage fault conditions and also the pre-selected under voltage threshold.

Considerable Features of The Voltage Monitoring Relay:
When it comes to the best and reliable type of voltage monitoring relay, it actually includes the
following features such as,

Over-voltage and under-voltage
Phase loss
Voltage quality of the incoming power line
Phase reversal
Phase imbalance

The best type of relay which is helpful to monitor the voltage basically includes the adjustable time
delay dropout basically on the under voltage in order to get rid of the nuisance tripping caused by
the temporary voltage fluctuations. Whenever the individuals are finding the top rated relays, you
can get specifically customizable time delay functions which will allow for tension free ease of use
along with the greater reliability.
The greater type of voltage band gives maximum protection to the available equipments which are
all required to run within the lower and upper voltage limit which allows an internal relay to stay

always energized. The voltage monitoring relay products with such greater functions will be
really very helpful to offer the state of the art additional protective functions which the users can
easily add and also apply to the motor control circuits. Even though there are several types of
monitoring relays existing in the market, today the voltage monitoring relays are very famous to be
used with the motors and for other applications to find the exact voltage levels.

3 Phase Voltage Monitoring Relay:
Now days, the buyers of the monitoring relays to monitoring the value and changes in the voltage
levels can also find the 3 phase monitoring relays which are all also known as the protective relays
to protect the equipment and motors from the serious damages caused by the voltage faults on the
3 phase systems. The exclusive benefits of such three phase voltage monitoring relays will be,

Easy to connect technology which width stands the highest vibrations.
Reliable and also safe monitoring of all significant parameters in your 3-phase network.
Easy to adjust through the front face potentiometer.

The individuals who are all looking for the best, reliable and durable type of relays to monitoring
the levels of voltage should need to consider these important features including phase unbalance
monitoring, over/under voltage monitoring, TRMS measuring principle, phase sequence
monitoring, phase failure detection and also easy connect technology with the exclusive push-in
Source Link: http://www.goldair-control.com/voltage-monitoring-relay-c-1.html
700 YinQing Road, Sungkiang High-Tech Park, Shanghai, China.
Hotline: 0086-21-67697100
Email: sales@goldair-control.com
Skype: qw_jsjh

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