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The switchgear is suitable for indoor complete devices with 3.6 - 12kV three - phase AC 50Hz single - bus sectioning. It is used for receiving and distributing electric energy, and has functions such as controlling, protecting and monitoring circuits. It can be applied in various types of power plants, substations, industrial and mining enterprises, high - rise buildings and other places, and can also be combined with ring main units for application in switching stations.
The switchgear is suitable for indoor complete devices with 3.6 - 12kV three - phase AC 50Hz single - bus sectioning. It is used for receiving and distributing electric energy, and has functions such as controlling, protecting and monitoring circuits. It can be applied in various types of power plants, substations, industrial and mining enterprises, high - rise buildings and other places, and can also be combined with ring main units for application in switching stations.
Main Technical Parameters of VS1 - 12 Type Vacuum Circuit Breaker
Project | Unit | VN3 - 12 | VS1 - 12 | ||||
Rated Voltage | KV | 12 | 12 | ||||
1min Power Frequency Withstand Voltage | KV | 42 | 42 | ||||
Lightning Impulse Withstand Voltage | KV | 75 | 75 | ||||
| Rated Frequency | Hz | 50 | 50 | ||||
Rated Current | A | 630, 1250 | 1600 - 3150 | ||||
Rated Short - Circuit Breaking Current | A | 20, 25, 31.5 | 31.5, 40 | ||||
Rated Short - Circuit Making Current (Peak Value) | KA | 50, 63, 80 | 80, 100 | ||||
4s Rated Short - Time Withstand Current | KA | 20, 25, 31.5 | 31.5, 40 | ||||
| Rated Peak Withstand Current | KA | 50, 63, 80 | 80, 100 | ||||
Rated Back - to - Back Capacitor Breaking Current | KA | 400 | 400 | ||||
Rated Single Capacitor Bank Breaking Current | A | 630 | 630 | ||||
Operating Procedure | - | -0.3s - Close - Open in 180s | -0.3s - Close - Open in 180s | ||||
Number of Breaking Current Times | times | 30 | 30 | ||||
| Mechanical Life | times | 10000 | 10000 | ||||
Rated Tripping Current | A | 5 | 5 | ||||
Rated Operating Voltage - Closing Coil | V | DC220, AC220 | DC220, AC220 | ||||
Rated Operating Voltage - Opening Coil | V | DC220, AC220 | DC220, AC220 | ||||
| Loop Resistance | uΩ | ≤ 35 | |||||
Main Technical Parameters of VS1 - 12 Type Vacuum Circuit Breaker
Project | Unit | VN3 - 12 | VS1 - 12 | ||||
Rated Voltage | KV | 12 | 12 | ||||
1min Power Frequency Withstand Voltage | KV | 42 | 42 | ||||
Lightning Impulse Withstand Voltage | KV | 75 | 75 | ||||
| Rated Frequency | Hz | 50 | 50 | ||||
Rated Current | A | 630, 1250 | 1600 - 3150 | ||||
Rated Short - Circuit Breaking Current | A | 20, 25, 31.5 | 31.5, 40 | ||||
Rated Short - Circuit Making Current (Peak Value) | KA | 50, 63, 80 | 80, 100 | ||||
4s Rated Short - Time Withstand Current | KA | 20, 25, 31.5 | 31.5, 40 | ||||
| Rated Peak Withstand Current | KA | 50, 63, 80 | 80, 100 | ||||
Rated Back - to - Back Capacitor Breaking Current | KA | 400 | 400 | ||||
Rated Single Capacitor Bank Breaking Current | A | 630 | 630 | ||||
Operating Procedure | - | -0.3s - Close - Open in 180s | -0.3s - Close - Open in 180s | ||||
Number of Breaking Current Times | times | 30 | 30 | ||||
| Mechanical Life | times | 10000 | 10000 | ||||
Rated Tripping Current | A | 5 | 5 | ||||
Rated Operating Voltage - Closing Coil | V | DC220, AC220 | DC220, AC220 | ||||
Rated Operating Voltage - Opening Coil | V | DC220, AC220 | DC220, AC220 | ||||
| Loop Resistance | uΩ | ≤ 35 | |||||
The schematic diagram of the cabinet is shown in the right figure.
The switchgear has a box - type fixed structure, and the cabinet body is assembled by aluminum - coated zinc plates after multiple bends. The upper rear part of the switchgear is the main busbar compartment, with a pressure relief device at the top of the compartment. The upper front part is the low - voltage compartment. Small busbars can be connected with cables from the bottom of the compartment, or copper tubes or copper bars can be arranged at the top of the compartment. The lower middle part of the switchgear is through. The busbar compartment maintains electrical connection with the lower middle part through a GN30 - type rotary isolating switch.
A vacuum circuit breaker is installed in the middle part, and an earthing switch and an outgoing - side isolating switch are installed in the lower part. Current transformers, voltage transformers and lightning arresters are installed at the rear part, and primary cables are led out from the lower rear part of the cabinet. An earthing busbar is arranged at the bottom of the cabinet, running through the entire row of switchgears. The isolating switch and earthing switch are operated at the right front part of the cabinet.
The schematic diagram of the cabinet is shown in the right figure.
The switchgear has a box - type fixed structure, and the cabinet body is assembled by aluminum - coated zinc plates after multiple bends. The upper rear part of the switchgear is the main busbar compartment, with a pressure relief device at the top of the compartment. The upper front part is the low - voltage compartment. Small busbars can be connected with cables from the bottom of the compartment, or copper tubes or copper bars can be arranged at the top of the compartment. The lower middle part of the switchgear is through. The busbar compartment maintains electrical connection with the lower middle part through a GN30 - type rotary isolating switch.
A vacuum circuit breaker is installed in the middle part, and an earthing switch and an outgoing - side isolating switch are installed in the lower part. Current transformers, voltage transformers and lightning arresters are installed at the rear part, and primary cables are led out from the lower rear part of the cabinet. An earthing busbar is arranged at the bottom of the cabinet, running through the entire row of switchgears. The isolating switch and earthing switch are operated at the right front part of the cabinet.
1. Are you a trading company or manufacturer ?
We are a professional factory with 10 years experience in the field of High and low Voltage switchgears, Substation, transformers, cable distribution box and various electrical equipment, such as vacuum circuit breaker, load break switch etc.
Our factory is the excellent supplier of State Grid Corporation od China.
2. Do you accept customized serveice?
We offer OEM/ODM service, can print your logo on product. our professional technical and quotation team can provice a satisfied project according to your drawing and parameters .
3. What is your MOQ?
Our MOQ is 1 piece.
4. How long is your delivery lead time?
It depends on your product requirement and quantity. Generally , 5~10 working days is avaliable.
5. How do you solve quality problems?
Please porvide detailed photoes of quality problems. our technical and quality testing department will analyse. we will make a satisfied soluton within 2 days.
6. What is your payment terms?
30%T/T in adcance, 70% before shipment. West union, L/C are also acceptable.
1. Are you a trading company or manufacturer ?
We are a professional factory with 10 years experience in the field of High and low Voltage switchgears, Substation, transformers, cable distribution box and various electrical equipment, such as vacuum circuit breaker, load break switch etc.
Our factory is the excellent supplier of State Grid Corporation od China.
2. Do you accept customized serveice?
We offer OEM/ODM service, can print your logo on product. our professional technical and quotation team can provice a satisfied project according to your drawing and parameters .
3. What is your MOQ?
Our MOQ is 1 piece.
4. How long is your delivery lead time?
It depends on your product requirement and quantity. Generally , 5~10 working days is avaliable.
5. How do you solve quality problems?
Please porvide detailed photoes of quality problems. our technical and quality testing department will analyse. we will make a satisfied soluton within 2 days.
6. What is your payment terms?
30%T/T in adcance, 70% before shipment. West union, L/C are also acceptable.
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