HWQ-12 Fully automatic high-voltage dual power switching deviceDetailed product description：

Environmental conditions for HWQ-12 fully automatic high-voltage dual power switching device
Surrounding 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;

High voltage intelligent dual power supply automatic switching function: it measures the voltage on the A or B incoming line, determines the status of the circuit breaker and automatic isolation switch, and performs 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.

The main advantages of HWQ-12 fully automatic high-voltage dual power switching device are:
1. Local control of switches
2. Remote control function
3. Fault detection of power lines
4. Line protection function
⑴ Current quick break protection
⑵ Overcurrent protection
⑶ Cold load startup protection (anti surge function)
⑷ Signal acquisition of switch body and non electric protection function with special requirements

Automatic backup 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 to each other
⑵ Priority backup self switching: Priority is set for both sides of the incoming power supply, and after the backup self switching is completed, the power supply side with higher priority is ensured to be 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