Shanghai Huabang Industrial Business Network - High voltage dual power supply

[High voltage dual power supply]HWQ-12 Fully automatic high-voltage dual power switching device

2026-6-14 10:08:48

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
�� Current quick break protection
�� Overcurrent protection
�� Cold load startup protection (anti surge function)
�� Signal acquisition of switch body and non electric protection function with special requirements

Automatic backup function
��. 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
�� 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
�� 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
�� 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
�� Receive timing commands from the main or sub stations, synchronize with the system clock, and enhance the comparability of time recording

[High voltage dual power supply]ZWQ-12 High Voltage Intelligent Fully Automatic High Voltage Dual Power Switching Device

2026-6-14 10:07:50

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
�� Short time current interruption protection
��. Overcurrent protection
�� Cold load starting protection (anti surge function)
�� Non electricity protection function for switch signal acquisition and special requirements
5. Dual backup automatic switching function
��. 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
�� 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
�� 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
�� 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
�� 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

[High voltage dual power supply]ZWB-12 Fixed sealed pole type high-voltage dual power switching device

2026-6-14 10:07:42

ZWB-12 fixed sealed pole type high-voltage dual power switching device (hereinafter referred to as high-voltage dual power) is an outdoor high-voltage distribution equipment with a rated voltage of 12KV and three-phase AC 50Hz. Mainly used for load current, overload current, and short-circuit current in dual circuit breaking and closing power systems. Suitable for protection and control in dual circuit substations and distribution systems of industrial and mining enterprises, and more suitable for urban and rural power grid construction, renovation, and frequent operation places.

Structural characteristics of ZWB-12 solid sealed pole type high-voltage dual power switching device

1. The circuit breaker adopts a three-phase solid sealed pole structure, which has the characteristics of stable and reliable breaking performance, no combustion and explosion hazards, no maintenance, small size, light weight, and long service life. 2. The circuit breaker adopts a fully enclosed structure with good sealing performance, which helps to improve moisture-proof and anti condensation performance, especially suitable for use in cold or humid areas.
3. The three-phase solid sealed pillar and current transformer adopt imported outdoor epoxy resin solid insulation, or adopt indoor epoxy resin wrapped organic silicon rubber solid insulation; It has the characteristics of high and low temperature resistance, UV resistance, and aging resistance.
4. The operating mechanism adopts a miniaturized spring operating mechanism, with low power of the energy storage motor and low energy consumption for opening and closing; The mechanism transmission adopts the true motion transmission method, with a small number of components and high reliability. The operating mechanism is placed in a sealed mechanism box, which solves the problem of rusting of the operating mechanism and improves its reliability.
5. The opening and closing operations of the circuit breaker can be manually or electrically operated, as well as remotely controlled. It can be matched with intelligent controllers to achieve distribution automation, and can also be combined with coincidence controllers to form automatic reclosers and sectionalizers.
6. Circuit breakers can be equipped with three-phase current transformers for overcurrent or short-circuit protection, and can also provide current acquisition signals to intelligent controllers; According to user requirements, measuring current transformers can be installed.
7. The circuit breaker is equipped with three-phase interlocking isolation switches on both sides, which have obvious visible fractures when the isolation switch is in the open state, and have anti misoperation interlocking devices with the circuit breaker body. The circuit breaker can only be operated when the isolation knife is fully closed or fully opened. Can be connected to lightning arrester post insulators for easy maintenance.

Environmental conditions for ZWB-12 solid sealed pole type 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 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.

The main advantages of ZWB-12 solid sealed pole type 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
�� Current quick break protection
�� Overcurrent protection
�� Cold load startup protection (anti surge function)
�� Signal acquisition of switch body and non electric protection function with special requirements
5. Automatic backup function
��. 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
�� 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
�� 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
�� 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
�� Receive timing commands from the main or sub stations, synchronize with the system clock, and enhance the comparability of time recording

[High voltage dual power supply]ZW10-12XDG/630-20 High Voltage Dual Power Mutual Switching Device

2026-6-14 9:53:22

I. Overview
The ZW10-12XDG/630-20 high-voltage dual power interconnection device (hereinafter referred to as the device) consists of two parts: a high-voltage vacuum circuit breaker and an intelligent controller. Suitable for dual power supply systems with AC 50Hz, rated voltage 12KV, and rated current~630A. When one power supply experiences a power outage or undervoltage, it automatically switches to the other normal power supply, ensuring reliable continuity of power supply. At the same time, it has protection interlock functions such as short circuit and overcurrent, effectively avoiding unnecessary power supply shock in case of load failure. In the event of a power outage due to a malfunction in the common power supply, the switching device can automatically switch to the backup power supply to ensure reliability and safety. It is also possible to switch between two power sources according to the needs of the load. Especially suitable for important places where power outages are not allowed, as an important electrical control device to ensure continuous power supply. Design a novel, high-performance, safe, reliable, highly automated, and widely applicable dual power automatic switching product for the new generation. The product is designed to ensure complete isolation of two high-voltage power sources, and adopts a complete and reliable mechanical and electrical interlock, thus having very high safety and reliability. This product is suitable for dual power users who have high requirements for power supply reliability and safety, as a control and protection setting for dual power supply systems.

The ZW10-12XDG/630-20 high-voltage dual power interconnection device is widely used in 10kV distribution lines in oil fields, mines, metallurgy, chemical industry, railways, communication, machinery, and 10kV lines in industrial and mining enterprises.

ZW10-12XDG/630-20 High Voltage Dual Power Interconnection Device

[High voltage dual power supply]ZW��-12GG/630-20 high voltage dual power mutual switching device

2026-6-14 9:52:13

The ZW �� -12GG/630-20 high-voltage dual power interconnection device (hereinafter referred to as the device) consists of two parts: a high-voltage vacuum circuit breaker and an intelligent controller. Applied in a dual power supply system with AC frequency of 50Hz, rated voltage of 12KV, and rated current up to 630A, it automatically switches to another normal power supply when one power supply experiences a power outage or undervoltage, or ensures the continuity of power supply. At the same time, the interlock function of short circuit and over six protection effectively avoids unnecessary power supply shock in case of load failure. In the event of a power outage due to a malfunction in the commonly used power supply, the switching device can automatically switch the backup power supply, ensuring reliability and safety, and can also switch between the two paths according to the needs of the load. Specially suitable for important places where power outages are not allowed, as an important electrical control device to ensure continuous power supply, it is a newly designed, novel, high-performance, safe and reliable, highly automated, and widely applicable dual power automatic switching product with automatic switching. The product design ensures complete isolation of the two high-voltage power sources, and adopts a complete and reliable mechanical and electrical interlock, thus having very high safety and reliability. This product is suitable for dual power users who have high requirements for power supply reliability and safety, as a control and protection device for dual power supply systems.
The product is widely used in 10KV distribution lines for oil fields, mines, metallurgy, chemical industry, railways, communication, machinery, and 10KV lines for industrial and mining enterprises.

Main technical parameters of HZW-12 and ZWGG-12 high-voltage dual power supply interconnection device

project		unit	parameter
rated voltage		kv	twelve
Maximum operating voltage		kv	twelve
rated current		a	six hundred and thirty
Rated load breaking current		ka	twenty
Rated short-circuit closing current (peak)		ka	fifty
Rated peak withstand current		ka	fifty
1-minute rated short-circuit withstand current		ka	twenty
Rated insulation level	Power frequency withstand voltage (dry-type)	kv	forty-two
	Lightning impulse withstand voltage (peak value)		seventy-five
Rated operating sequence			o-0.3s-co-180s-co
mechanical life		time	ten thousand
Rated short-circuit current breaking times		time	thirty
Rated closing voltage for operating machinery		v	two hundred and twenty
Rated opening voltage for operating machinery		v	two hundred and twenty
Contact opening distance		mm	9±1
Overtravel		mm	three
Three phase asynchronous opening and closing		ms	��2
Contact closing bounce time		ms	��2
Average opening speed		s	1.2±0.2
Opening time	Under the highest operating voltage	s	0.025-0.05
	At the lowest operating voltage		0.03-0.06
Closing time		s	0.025-0.05
Main circuit resistance of each phase		�̦�	��180
Allowable cumulative thickness of wear for dynamic and static contacts		mm	three

[High voltage dual power supply]BGE60-12/630-20 Dual power vacuum circuit breaker

2026-6-13 21:16:42

The BGE60-12/630-20 outdoor high-voltage dual power vacuum circuit breaker is the latest generation of outdoor high-voltage dual power distribution equipment developed to address the safety and reliability of dual power supply systems. Used for high-voltage dual power supply systems with a rated voltage of 12kV and a rated current up to 630A, as an automatic switch for high-voltage dual power supply systems, for overcurrent, closing inrush current, short circuit, overvoltage, and undervoltage protection. This product adopts an integrated symmetrical structure, with small volume, light weight, and easy installation. This product is designed to ensure complete isolation of two high-voltage power sources, and adopts perfect and reliable mechanical and electrical interlocking, thus having very high safety and reliability. This product also has wireless remote control operation, RS232 data interface and other functions, which can facilitate users to operate and set up the product. This product is suitable for dual power users who have high requirements for power supply reliability and safety, as a control and protection device for dual power supply systems.

[High voltage dual power supply]ZYKCQ-50 High Voltage Dual Power Automatic Conversion Device

2026-6-13 21:14:06

The ZYKCQ-50 high-voltage dual power automatic conversion device consists of two high-voltage vacuum circuit breakers and an intelligent controller. Applied in a dual power supply system with AC frequency of 50 Hz, rated voltage of 12KV, and rated current up to 630A, it automatically switches to the other normal power supply when one power supply experiences a power outage or undervoltage, ensuring reliable continuity of power supply. At the same time, it has protection interlock functions such as short circuit and overcurrent, effectively avoiding unnecessary power supply shock in case of load failure. When the common power supply fails, the switching device can automatically switch with the backup power supply to ensure reliability and safety. It is also possible to switch between two power sources according to the needs of the load. It is particularly suitable for important places where power outages are not allowed. As an important electrical control device to ensure continuous power supply, it is a self switching and self restoring dual power automatic switching device that is matched with high-voltage vacuum circuit breakers. Design a novel, high-performance, safe, reliable, highly automated, and widely applicable dual power automatic switching product for the new generation.

The ZYKCQ-50 high-voltage dual power automatic conversion device is widely used in 10kV distribution lines in oil fields and mines, as well as 10kV lines in industrial and mining enterprises.