High Voltage Automatic Vacuum Circuit Breaker Outdoor AC Stainless Steel Ceramic Used With Group Disconnect Switches
Product Description:
The ZW8-12 circuit breaker is designed to comply with international standards and is manufactured using advanced technologies. It has a rated voltage of 12kV, a rated current of up to 630A, and a short-circuit breaking current of up to 20kA.
The circuit breaker is composed of several key components, including the vacuum interrupter, operating mechanism, and control system. The vacuum interrupter is the heart of the circuit breaker and is responsible for interrupting the electrical current. It is designed to operate in a vacuum, which helps to prevent arcing and ensures reliable operation.
The operating mechanism is responsible for opening and closing the circuit breaker and can be operated manually or electrically. The control system monitors the circuit breaker and provides feedback to the operator, allowing them to monitor the status of the breaker and detect any faults.
The ZW8-12 circuit breaker is designed to be highly reliable and requires minimal maintenance. It has a long service life and is capable of withstanding harsh outdoor environments, making it suitable for use in a wide range of applications.
A high voltage disconnect switch is an electrical switch that is designed to isolate a section of an electrical network or system from the rest of the system for maintenance or repair purposes. It is typically used in high voltage power transmission and distribution systems.
The switch is designed to open and close under normal or abnormal conditions, such as a fault or overcurrent. When the switch is open, it physically disconnects the section of the system from the rest of the network, preventing the flow of electricity to that section.
High voltage disconnect switches are typically designed to operate at voltages between 600 volts and 765,000 volts, and they can be operated manually or automatically. They are typically installed in substations or on power poles, and they are an important component of the electrical grid infrastructure.
Double effect of using when GW9-10 series isolator swich can be used with the vacuum circuit breakers!!
Feature:
1.Voltage Rating: The ZW8-12 circuit breaker is designed for medium-voltage applications and has a rated voltage of 12 kilovolts (kV). It is suitable for electrical systems operating at this voltage level.
2.Vacuum Interruption Technology: This circuit breaker utilizes vacuum interrupters as the arc quenching medium. Vacuum interrupters are highly efficient in extinguishing arcs and provide excellent dielectric strength, ensuring reliable interruption of medium-voltage currents.
3.Compact Design: The ZW8-12 circuit breaker features a compact and modular design, allowing for easier installation, maintenance, and integration into switchgear assemblies. The compact size also helps optimize space utilization in electrical installations.
4.High Breaking Capacity: The circuit breaker is designed to handle high breaking capacities, allowing it to interrupt short circuits and fault currents safely. The breaking capacity of the ZW8-12 circuit breaker is typically specified by the manufacturer.
5.Reliable Operation: The ZW8-12 circuit breaker is engineered for reliable operation and has undergone rigorous testing to ensure its performance and durability. It incorporates high-quality materials and precision-engineered components to ensure stable and efficient switching operations.
6.Safety Features: The circuit breaker is equipped with safety features to enhance operator and system safety. These may include interlocking mechanisms to prevent incorrect operation, mechanical and electrical indicators to provide status information, and safety shutters to prevent accidental contact with live parts.
7.Remote Control and Monitoring: Depending on the specific model and manufacturer, the ZW8-12 circuit breaker may support remote control and monitoring capabilities. This allows for convenient operation and monitoring of the circuit breaker from a central control room or through a supervisory control and data acquisition (SCADA) system, enhancing system management and maintenance.
Structure:
1.The upper cover of the enclosure is processed using the one-time stretching forming technology of the mold, achieving an IP4X protection level, high mechanical strength, beautiful appearance, and easy installation. It is not easy to rust and is corrosion-resistant. Stainless steel or high-quality steel plate spray treatment can be selected.
2.The disconnecting switch (optional) is tailored according to the ZW8 switch body unit, with an obvious disconnect point during distribution line maintenance, and a mechanical interlocking device between the disconnecting switch and the circuit breaker to prevent misoperation.
Condition:
1.Ambient temperature: The circuit breaker is designed to operate within a temperature range of -15°C to +40°C. This means it can function effectively in environments with temperatures as low as -15°C and as high as +40°C.
2.Wind pressure: The circuit breaker can withstand wind pressures of up to 700Pa, which is equivalent to a wind speed of 34m/s. This ensures that the circuit breaker remains stable and unaffected by strong winds.
3.Altitude: The circuit breaker is suitable for installation at altitudes of up to 1000m above sea level. It is designed to operate reliably within this altitude range.
4.Seismic intensity: The circuit breaker is designed to withstand seismic activities with an intensity level of up to 8 on the seismic intensity scale. This ensures that it remains operational and unaffected by seismic vibrations up to this level.
Technical Parameter:
ZW8-12
Serial No. | Parameter | Unit | Data | ||||||||
1 | Rated voltage | kV | 12 | ||||||||
2 | Rated insulation level | 1min Industrial frequency withstanding voltage | Dry Test | 42 | |||||||
Wet Test | 34 | ||||||||||
Lightning surge withstand voltage (Peak) | 75 | ||||||||||
3 | Rated Current | A | 630 | ||||||||
4 | Rated short-circuit breaking current | kA | 20 | ||||||||
5 | Rated short-circuit breaking current times | time | 30 | ||||||||
6 | Rated short-circuit switching current (peak) | kA | 50 | ||||||||
7 | Rated peak withstanding current | 50 | |||||||||
8 | Rated short time withstand current | 20 | |||||||||
9 | Rated short-circuit duration | S | 4 | ||||||||
10 | Breaking time (Separate excitation decoupling) |
Max. operating voltage | ms | 15-50 | |||||||
Rated operating voltage | 30-60 | ||||||||||
Min. operating voltage | |||||||||||
11 | Closing time | 25-50 | |||||||||
12 | Full disconnection time | ≤100 | |||||||||
13 | Arc burning time | ≤20 | |||||||||
14 | Mechanical lifetime | time | 10000 | ||||||||
15 | Closing function | J | 70 | ||||||||
16 | Rated input power of energy storage motor | W | <250 | ||||||||
17 | Rated operating voltage/ rated auxiliary circuit voltage | V | DC220 | ||||||||
AC220 | |||||||||||
18 | Energy storage time at rated voltage | S | <10 | ||||||||
19 | Overcurrent decoupler | Rated Current | A | 5 | |||||||
Accuracy of decoupling current | % | ±10 | |||||||||
GW9-10
Serial No. | Parameter | Unit | Data | |||||||||
1 | Rated Voltage | kV | 12 | |||||||||
2 | Rated Current | Model No. | (H)GW9-12(W)/630-20 | A | 630 | |||||||
(H)GW9-12(W)/1000-20 | 1000 | |||||||||||
(H)GW9-12(W)/1250-31.5 | 1250 | |||||||||||
3 | 4s Short-time withstanding current | Model No. | (H)GW9-12(W)/630-20 | kA | 50 | |||||||
(H)GW9-12(W)/1000-20 | 50 | |||||||||||
(H)GW9-12(W)/1250-31.5 | 80 | |||||||||||
4 | Rated Insulation Level | Lightning surge withstand voltage(peak) | Polar-to-Earth (Positive & Negative) |
kV | 75 | |||||||
Interfracture (Positive & Negative) |
85 | |||||||||||
Industrial frequency withstand voltage (1 min) (Effective value) |
Dry Test/Wet Test | Polar-to-Earth | 42(Dry) 34(Wet) |
|||||||||
Interfracture | 48(Dry) | |||||||||||
48(Dry) | ||||||||||||
48(Dry) 40(Wet) |
||||||||||||
5 | Main Circuit Resistance | μ Ω | 630 | |||||||||
1000 | ||||||||||||
1250 | ||||||||||||
6 | Mechanical Life Time | times | 50 | |||||||||
50 | ||||||||||||
80 | ||||||||||||