HengAnshun Automatic Vacuum Circuit Breaker 12kV High Voltage Disconnector Switch

Powerful Automatic Vacuum Circuit Breaker Used In Distribution System Operated With High Voltage Diconnnector Switch

Product Description:

The ZW8-12 outdoor high-voltage AC vacuum circuit breaker is a type of electrical switchgear commonly used in power transmission and distribution systems. It is designed to operate in outdoor environments and is rated for a maximum voltage of 12kV and a frequency of 50Hz.

The main function of the ZW8-12 circuit breaker is to interrupt the flow of electrical current in the event of an overload or short-circuit fault. This helps to protect the electrical equipment downstream from damage and prevent power outages.

The ZW8-12 circuit breaker is particularly suited for use in distribution systems for urban and rural power grids operating at 10kV. It is a mature and reliable product that has been widely used in the power industry for many years.

One of the key advantages of the ZW8-12 circuit breaker is its use of vacuum interrupters. Vacuum interrupters are highly efficient at interrupting electrical currents and are known for their long lifespan and low maintenance requirements. This makes the ZW8-12 circuit breaker a cost-effective and reliable solution for power distribution system

The GW9-10 outdoor disconnector switches play a crucial role in high-voltage power transmission and distribution systems. They are specifically designed to disconnect circuits from their power sources for maintenance or repair purposes, ensuring the safety of workers performing tasks on the system.

The primary function of an outdoor disconnector switch is to isolate the circuit from the power supply. This is achieved through a rotating pole that controls the opening and closing of the switch's blade or contact. By rotating the pole, the blade can be engaged or disengaged, effectively connecting or disconnecting the circuit. This manual operation provides a visible indication of the switch's status, allowing operators to easily determine whether the circuit is energized or de-energized.

Operator safety is of paramount importance when dealing with high-voltage systems. Therefore, the pole of an outdoor disconnector switch is typically constructed of a non-conductive material, such as fiberglass or composite materials. This choice of materials ensures that the pole provides insulation against the high voltage present in the system, protecting the operator from electric shock during switch operation.

Outdoor disconnector switches are available in different designs and sizes to accommodate the voltage and current ratings of the circuits they control. They are commonly installed on poles or structures in outdoor settings for easy accessibility and operation. When used in conjunction with other protective devices like circuit breakers and fuses, disconnector switches contribute to the overall safety and reliability of the electrical system by providing a means of isolation and protection.

Double effect of using when GW9-10 series isolator swich can be used with the vacuum circuit breakers.

Feature:

1.The ZW8-12 outdoor high-voltage AC vacuum circuit breaker features enhanced anti-pollution capability, with internal insulation designed for both air and epoxy resin composite insulation. This insulation system helps protect the circuit breaker from environmental pollutants, ensuring its reliable operation even in polluted or harsh outdoor conditions.

2.The ZW8-12 circuit breaker is equipped with a missile energy storage operating mechanism. This mechanism utilizes stored energy to efficiently operate the circuit breaker, enabling quick and reliable switching operations. The missile energy storage mechanism enhances the overall performance and reliability of the circuit breaker.

3.The ZW8-12 circuit breaker can be configured with either a one-side (left side) or two-side separation switch, along with an external PT (Potential Transformer). This flexibility allows for versatile installation options based on specific system requirements. The one-side or two-side separation switch enables easy isolation of the circuit breaker from the power system, while the external PT facilitates accurate voltage measurement and monitoring.

 
Collocation:

The relation between the outdoor vacuum circuit breaker and the outdoor high-voltage disconnect isolator lies in their complementary roles in the electrical system:

Circuit Interruption: The vacuum circuit breaker is responsible for interrupting the electrical circuit during normal operation or in the event of a fault. It acts as the primary means of breaking the current flow. In contrast, the disconnect isolator is used for isolating the circuit from the power source during maintenance or repair activities. It provides an additional layer of safety by physically opening the circuit.

Coordination: In high-voltage power systems, the vacuum circuit breaker and the disconnect isolator are often coordinated to work together. The circuit breaker is responsible for detecting faults and tripping to interrupt the current flow, while the disconnect isolator is used to physically isolate the circuit and provide a visible indication of the disconnection.

Safety and Maintenance: The disconnect isolator plays a crucial role in ensuring the safety of maintenance personnel. Before any maintenance work can be performed on the electrical equipment, the disconnect isolator is operated to open the circuit and provide a visible air gap. This ensures that the equipment is de-energized and safe to work on. The vacuum circuit breaker, on the other hand, protects the system during normal operation and in the event of faults.

Structure:

1.Vacuum Interrupter: The vacuum interrupter is the heart of the circuit breaker. It consists of a fixed contact and a movable contact sealed within a vacuum chamber. When the circuit breaker operates, the contacts separate, creating an arc. The vacuum interrupter's role is to extinguish the arc and provide reliable interruption of the current.

2.Operating Mechanism: The circuit breaker is equipped with an operating mechanism responsible for opening and closing the contacts. It may utilize various mechanisms such as a spring mechanism, hydraulic mechanism, or electromagnetic operating mechanism. The operating mechanism ensures smooth and reliable operation of the circuit breaker.

3.Insulating Enclosure: The circuit breaker is housed in an insulating enclosure, which provides protection against external factors like moisture, dust, and contaminants. The enclosure is typically made of high-quality insulating materials to maintain the required dielectric strength and insulation properties.

4.Control and Protection System: The ZW8-12 circuit breaker incorporates a control and protection system for monitoring and controlling its operation. This system includes various sensors, relays, and control devices to detect abnormal conditions, provide signal inputs, and initiate the opening or closing of the circuit breaker.

5.Connection Terminals: The circuit breaker has connection terminals for the incoming and outgoing electrical connections. These terminals allow for the connection of power cables or busbars, enabling the flow of current through the circuit breaker.

6.Auxiliary and Control Components: Additional auxiliary and control components may be present in the circuit breaker to enhance its functionality. These can include auxiliary switches, voltage transformers, current transformers, and other accessories necessary for monitoring, measuring, and controlling the electrical parameters.

Advantage:

1.It is equipped with CT23 type spring energy-stored operating mechanism. Energy-stored, opening and closing can be achieved by motor or by manual.

2.ZW8-12G consists of ZW8-12 breaker and isolator, called combined breaker, can be used as sectionalizer.

3.The structure of breaker is of three-phase assembled in a tank, three-phase vacuum arc-extinguishing chamber enclosed in metal tank, insulation material between phases and phase to each made of SMC.

4.Reliable performances, and high insulating strength.

Application:

1.Power distribution: Outdoor vacuum circuit breakers are widely used in power distribution systems to switch and protect distribution transformers, feeders, and other equipment. They are commonly installed on outdoor poles, substations, and switchgear.

2.Utility-scale renewable energy: Outdoor vacuum circuit breakers are used in utility-scale renewable energy projects, such as wind and solar farms, to switch and protect inverters and other equipment.

3.Railway systems: Outdoor vacuum circuit breakers are used in railway systems, such as signaling systems and railway infrastructure, to switch and protect electrical equipment.

4.Mining operations: Outdoor vacuum circuit breakers are used in mining operations to switch and protect electrical equipment in harsh outdoor environments.

5.Oil and gas industry: Outdoor vacuum circuit breakers are used in the oil and gas industry to switch and protect electrical equipment, such as pumps, compressors, and pipelines.

 Technical Parameter:

ZW8-12

 
 GW9-10