Product Categories

Contact Us

Add: No.38 South Taoyuan Road, Yaozhuang Town,Jiashan County, Jiaxing City, Zhejiang Province, China
Contact person: Elva Zhuang&Sunny Ni
Tel:+86-573-84775555
Fax:+86-573-84776699
Phone:+86-13732570078
E-mail:sales9@great-relay.com
       sunny.ni@great-relay.com

Latching Relay

Home > News > Content
The Working Principle And Function Of Phase Sequence Relay
Nov 24, 2017

The working principle and function of phase sequence relay

The working principle of phase sequence relay: a phase sequence comparator consisting of an operational amplifier is used to compare the amplitude, frequency and phase of the voltage. If the conditional amplifier turns on, if one condition is not attached to the amplifier, the amplifier is closed.

Phase sequence relay for phase sequence protection:

Phase sequence relay can be used in phase sequence protection. When the phase sequence of the circuit does not match the specified phase sequence, the phase sequence relay will trigger the action and cut off the power supply of the control circuit so as to cut off the motor power supply and protect the motor.

In general, the wiring sequence of the motor work is prescribed, if the order of phase is disordered for some reason, the motor will not work or even damage. Phase sequence protection is to prevent such accidents.


Add: No.38 South Taoyuan Road, Yaozhuang Town,Jiashan County, Jiaxing City, Zhejiang Province, China
Contact person: Elva Zhuang&Sunny Ni
Tel:+86-573-84775555
Fax:+86-573-84776699
Phone:+86-13732570078
E-mail:sales9@great-relay.com
       sunny.ni@great-relay.com