The network consists of a mother controller, dual power controller, and automatic transfer switch

Product Overview：
WQ7A is used for automatic switching of two in one low-voltage power supplies. It has functions such as precise measurement, intelligent control, anomaly detection, historical recording, reclosing, power-off reconnection, oil engine start-up, and remote communication, and is widely used in scenarios such as power, communication, municipal and smart buildings.

Technical Specifications：

WQ7A
Main functions	Two way power supply selection, precise measurement, intelligent control, anomaly detection, reclosing, power-off reconnection, oil engine start-up, and four remote functions
display	LCD 128 * 64 pixels
language	Chinese/English/Russian
Working Voltage	AC power supply A1-N1/A2-N2, voltage range AC 185-255 V;
	DC power supply (optional), voltage range DC 9-36 V.
AC system	Three phase four wire, single-phase two wire, two-phase three wire, three-phase three wire (customized)
Total power consumption	8W (standby mode:< 4W)
AC frequency	(50/60)Hz
Relay output capacity	5A/250V passive output
Switch input interface	Effective connection to the common terminal (COM)
Programmable output port	three
Programmable input port	six
communication interface	RS485 isolation interface, MODBUS protocol
Protection level	IP55 (when a waterproof rubber ring is installed between the controller and the control screen)
Dielectric Strength	Apply an AC2kV voltage between the AC high-voltage terminal and the low-voltage terminal, with a leakage current not exceeding 3mA within 1 minute
Dimensions (mm)	197mm×152mm×57mm(L×W×H)
Hole size (mm)	186mm×141mm
working environment	Environmental temperature: (-15~+60) ℃; Relative humidity: (20-90)% RH
weight	0.7kg
Current and power display	support
Panel lock	support
Start the oil engine	support
First priority/Second priority/No priority	support
Customize the startup interface	support
Forced disconnection	support
history	support

Download：
WQ7A Dual Power Controller Instruction Manual (V1.4) (Chinese) WQ7A Dual Power Controller Instruction Manual (V1.4) (English) WQ7A Dual Power Controller Communication Protocol (V1.1) WQ7A Dual Power Controller Communication Protocol (V1.1)