Q96-PSC Q72-PSC Phase sequence controller

                                            Q96-PSC Q72-PSC Phase sequence controller

Overview

Q96-PSC Q72-PSC Phase sequence controller is also called control phase sequence in AC grid, Automatic phase sequence control for three-phase power network, The phase sequence relay only changes the on-off of the auxiliary contact when the phase sequence of the power supply changes, so as to achieve the purpose of on-off of the main power contactor. The phase sequence controller has many functions, including not only the phase sequence detection function of the phase sequence relay and the phase failure protection function of the phase sequence protector, but also the functions of phase sequence adjustment and sequence startup. Simply put, the phase sequence relay is only a part of the function of the phase sequence controller.

Working pricipe of Q96-PSC Q72-PSC Phase sequence controller

The Phase sequence controller is sampled and processed. When the Phase sequence controller is consistent with the phase sequence of the input of the protector terminal, the output relay is connected and the main control circuit of the equipment is connected. When the phase sequence of the power supply changes, the phase sequence is inconsistent, and the output relay cannot be connected, so as to protect the equipment and avoid accidents.

The Phase sequence controller is connected to the three wiring points of u, V and w (some are R, s and T) of the protector in turn. The auxiliary contact of the phase sequence protector generally has one normally open and one normally closed. It is connected to the control circuit, and the specific connection is normally open or normally closed according to the control principle or wiring diagram,. In case of phase sequence error or phase loss, the auxiliary contact of the protector acts normally open to normally closed, and normally closed to normally open. If it plays a protective role, it should be connected to the normally closed contact.

Features of Q96-PSC Q72-PSC Phase sequence controller

The phase sequence protector can display the three-phase power supply voltage in real time, and can provide users with alarm output and contact control signal of protection circuit action output in the form of relay output in case of overvoltage protection, undervoltage protection, phase loss protection, unbalance protection, phase staggering protection, PTC temperature protection, load end protection and other faults. It has the characteristics of complete functions, stable performance, intuitive display and simple operation。

Main tech data of Q96-PSC Q72-PSC Phase sequence controller

Withstand voltage: 2KV 50Hz for 1 minute

Operating ambient temperature: - 25 ℃ ~ + 55 ℃

Enclosure protection grade: IP44

IP56: applicable to q72 with sealing cover Q96 instrument.

Working vibration resistance: 2 ~ 100Hz acceleration ≤ 0.7G

Relative humidity: ≤ 98% RH

Working voltage (phase-to-phase): (AC) 190V ~ 450V

Frequency: 50Hz; 60Hz

Power consumption: ≤ 2V A

Note: Any special design or question of Q96-PSC Q72-PSC Phase sequence controller,  kindly contact the manufacturer for more details.