ZWQ-12 High Voltage Intelligent Fully Automatic High Voltage Dual Power Switching DeviceDetailed product description：

ZWQ-12 high-voltage intelligent fully automatic high-voltage dual power switch device is widely used in mining, metallurgy, petroleum, chemical, railway, communication, machinery, construction, military, aerospace, finance, manufacturing, automation industry, public institutions and other fields for fully automatic switching of 12KV power grid multi-channel power supply.

The ZWQ-12 high-voltage intelligent fully automatic high-voltage dual power switching device has been selected as the most commonly operated dual power switching device on China's power grid, and is also the oldest and most reliable 12KV outdoor high-voltage vacuum circuit breaker. It has undergone multiple development and improvements. By using a single high-voltage vacuum circuit breaker and a three position automatic isolation switch to sample through a photoelectric sensing device, the current and voltage signals in the circuit breaker are transmitted to the intelligent control equipment, and after calculation and judgment, fully automatic switching is achieved.

2、 Advantages of high-voltage intelligent dual power switch:
1. Local control of switches
2. Remote control distance function
3. Fault detection and prevention of power lines
4. Function of line protection device
⑴ Short time current interruption protection
⑵. Overcurrent protection
⑶ Cold load starting protection (anti surge function)
⑷ Non electricity protection function for switch signal acquisition and special requirements
5. Dual backup automatic switching function
⑴. No priority backup self switching: Both sides of the incoming power supply are mutually backup and provide equal power supply. When one side of the power supply loses power, the other side of the power supply actively switches on and off
⑵ Priority backup self switching: Set the priority of the dual side incoming power supply, and after the backup self switching is completed, ensure that the power supply side with higher priority is in the power supply state
⑶ In case of overcurrent fault in the branch line, the backup automatic switching is locked
6. Local digital display
7. Event recording function
SOE recording: Record and maintain various important information that occurs on the line during power outage, with a resolution of 2MS. Accumulate up to 32 sets of SOE information and display them in a loop
8. Human machine interface function
Panel debugging port: can locally query and configure data through a PC computer
9. Self diagnostic protection function
⑴ Device self-test: Regular self-test of RAM FLASH UART A/D, etc. Any device malfunction will be indicated through terminal status and reported to the control center
⑵ Receive timing commands from the main or sub stations, synchronize with the system clock, and enhance the comparability of time recording

3、 ZWQ-12 High Voltage Intelligent Fully Automatic High Voltage Dual Power Switching Device Application Environment Requirements
Air temperature: upper limit+40 ℃, lower limit -40 ℃;
Altitude: Ordinary type not exceeding 2000mm, plateau type not exceeding 3500mm;
Wind pressure: not exceeding 700pa (equivalent to a wind speed of 34m/s);
Ice thickness: 10mm;
Seismic intensity: not exceeding 8 degrees;

4、 High voltage intelligent dual power automatic switching function:
Measure the voltage on the A or B incoming line, determine the status of the circuit breaker and automatic isolation switch, and perform automatic switching; This device has overcurrent protection; Detecting the operating current at the load end, achieving timed overcurrent and quick break protection, with one-time reclosing and locking functions, with delayed closing for incoming power, and priority power supply function can be set. When the main power supply side is restored, it can automatically switch to that side for power supply. When there is no voltage on the incoming line, the vacuum circuit breaker will automatically trip, and the automatic isolation switch will not change direction. When any side is powered on first next time, it will automatically turn to that side, and the vacuum circuit breaker will automatically close. It can also be manually opened for maintenance, and the switch will be locked. The automatic isolation switch stops in the center to ensure electrical safety.

Model and Style: ZWQ-12G/630-20
(Choose one specification below)
Manual iron shell, electric iron shell, manual stainless steel, electric stainless steel, semi-automatic iron shell, semi-automatic stainless steel, fully automatic iron shell, fully automatic stainless steel