0102030405
China VS1 (VTDIndoor High Voltage AC Vacuum Circuit Breaker 12-24kV - Reliable Suppliers and Factory
General
VS1 (VTD6) series Indoor high voltage AC vacuum circuit breaker is applicable to switchgears with rated voltage of 12~24kV. It's used for protecting and controlling the electrical equipment in the fields of industry & mining enterprise, power plants and substation. Due to the special advantages of vacuum circuit breakers, it is especially suitable for applications requiring frequent operations at rated current or multiple short-circuit currents.
The circuit breaker adopts the integrated design of operating mechanism and circuit breaker. They form a front and rear sub assembly structure with reliable interlocking function. It can be used as a fixed installation unit or a handcart unit with a chassis.
Standards
Product quality assurance is based on the continuous improvement of product research, development, design and production processes that meet the requirements of all aspects of the quality system. The basic parameters and technical indicators of the product meet the following standards:
- GB/T1984 - High voltage AC circuit breaker
- DL/T403 - High voltage AC circuit breaker
- IEC60694 - Common specifications for high-voltage switchgear and controlgear standards
- IEC62271-100 - High-voltage switchgear and controlgear-Part 100: Alternating current circuit breakers
Service Conditions
- Ambient temperature: - 15 ℃ ~ + 40 ℃
- Altitude: ≤ 1000M
-
Relative humidity:
Daily average relative humidity ≤ 95%
Daily average vapor pressure ≤ 2.2x10-3MPa
Monthly average relative humidity ≤ 90%
Monthly average vapor pressure ≤ 1.8x10-3MPa - Earthquake resistant level: ＜ grade 8
- Site condition: no dripping, no flammable and explosive hazards, no chemical corrosive gas and no violent vibration
※Note: If the service environment exceeds the above conditions, please consult with the manufacturer.
Type and Designation
Technical Data
◆ Technical parameters of circuit breaker
| Item | Unit | Parameters | |
|---|---|---|---|
| Rated voltage | kV | 12 | 24 |
| Rated frequency | Hz | 50/60 | |
| 1min Rated power frequency short-time withstand voltage (phase to phase, to earth / isolation distance) | kV | 42 | 65 |
| Rated Lightning impulse withstand voltage (peak) (phase to phase, to earth / isolation distance) | kV | 75 | 125 |
| Rated operation sequence | O-t-CO-t'-CO | ||
| Item | Unit | Parameters | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rated current | A | 630 | 1250 | 1250 | 1600 | 2000 | 2500 | 1250 | 1600 | 2000 | 2500 | 3150 | 3150 | 4000 |
| Rated short-time breaking current | kA | 20/25 | 31.5 | 40 | 50 | |||||||||
| Rated short-circuit making current (peak) | kA | 50/63 | 80 | 100 | 125 | |||||||||
| Rated short-circuit duration | S | 4 | 4 | 4 | 4 | |||||||||
| Mechanical life | Times | 20000 | 20000 | 20000 | 10000 | |||||||||
Note:
20kA / 25kA / 31.5kA : t=0.3s, t’=180s
40kA / 50kA : t=180s, t’=180s
4000A requires forced air cooling
※ If the mechanical life requirement is higher than the standard configuration, consult with the manufacturer.
20kA / 25kA / 31.5kA : t=0.3s, t’=180s
40kA / 50kA : t=180s, t’=180s
4000A requires forced air cooling
※ If the mechanical life requirement is higher than the standard configuration, consult with the manufacturer.
◆ Mechanical characteristic parameters of circuit breaker
| Item | Unit | Parameters | |||||
|---|---|---|---|---|---|---|---|
| 12KV | 24KV | ||||||
| Distance of contact | mm | 9 ± 1 | 13 ± 1 | ||||
| Over-travel | mm | 3.5 ± 0.5 | |||||
| Three-phase C/O asynchrony | ms | ≤2 | |||||
| Closing contact bounce time | ms | ≤2 / ≤3(50kA) | |||||
| Contact pressure of closing contact | N | 20kA | 25kA | 31.5kA | 40kA | 50kA | |
| 2000 ± 200 | 2400 ± 200 | 3100 ± 200 | 4250 ± 200 | 5500 ± 200 | |||
| Average opening speed | m/s | 0.9~1.31 | 1.1~1.6 | ||||
| Average closing speed | m/s | 0.4~0.8 | 0.6~1.0 | ||||
◆ Opening and closing time
| Closing time: 30~70ms | Opening time: 15~45ms |
◆ Technical parameters of coil and locking electromagnet
| Name of equipment | Power (W) | Rated voltage (V) |
|---|---|---|
| Opening coil | 368 | 220/110 |
| Closing coil | 368 | |
| Locking electromagnet | 4.8 | |
| Overcurrent controller Y7 (Y8, Y9) | — | — |
◆ Technical parameters of energy charging motor
| Rated voltage (V) | Power (W) | Charging time (s) | Applicable current class |
|---|---|---|---|
| 220/110 | 70 | ≤15 | 20kA、25kA、31.5kA、40kA |
| 220/110 | 90 | ≤15 | 50kA |
Outline Dimension Drawing
A) Fixed type - 12kV
| Rated current (A) | 630 | 1250 | 1600 |
| Rated short circuit breaking current (A) | 20, 25, 31.5 | 25, 31.5 | 31.5, 40 |
| Distance between phases (mm) | 150 ± 1.5 | ||
| Top interlock L1 of mechanism | 30, 50 (Interlock extended from left or right, and the length can be made as per client requirements) | ||
| Spindle interlock L2 (mm) | 30, 50 (Interlock extended from left or right, and the length can be made as per client requirements) | ||
Outline dimension drawing of VS1 (VTD6)-12 fixed type circuit breaker (Distance between phases is 150mm)
Note: The dimension in brackets refers to the dimension from the outgoing terminal of the composite insulated pole to the center of the pole.
| Rated current (A) | 630 | 1250 | 1600 |
| Rated short circuit breaking current (A) | 20, 25, 31.5 | 25, 31.5 | 31.5, 40 |
| Distance between phases (mm) | 210 ± 1.5 | ||
| Top interlock L1 of mechanism | 30, 50 (Interlock extended from left or right, and the length can be made as per client requirements) | ||
| Spindle interlock L2 (mm) | 30, 50 (Interlock extended from left or right, and the length can be made as per client requirements) | ||
Outline dimension drawing of VS1 (VTD6)-12 fixed type circuit breaker (Distance between phases is 210mm)
| Rated current (A) | 630 | 1250 | 1600 |
| Rated short circuit breaking current (A) | 20, 25, 31.5 | 25, 31.5 | 31.5, 40 |
| Distance between phases (mm) | 210 ± 1.5 | ||
| Top interlock L1 of mechanism | 30, 50 (Interlock extended from left or right, and the length can be made as per client requirements) | ||
| Spindle interlock L2 (mm) | 30, 50 (Interlock extended from left or right, and the length can be made as per client requirements) | ||
Outline dimension drawing of VS1 (VTD6)-12 fixed type circuit breaker (Distance between phases is 275mm)
B) Withdrawable type - 12kV (trolley travel distance is 200mm)
| Rated current (A) | 630 | 1250 |
| Rated short circuit breaking current (A) | 20, 25, 31.5 | 25, 31.5 |
| Dimension of static contact (mm) | Φ35 | Φ49 |
| Distance between phases (mm) | 150 ± 1.5 | |
Outline dimension drawing of VS1 (VTD6)-12 withdrawable type circuit breaker (For cabinet width 550mm)
| Rated current (A) | 630 | 1250 | 1600 |
| Rated short circuit breaking current (A) | 20, 25, 31.5 | 25, 31.5, 40 | 31.5, 40 |
| Dimension of static contact (mm) | Φ35 | Φ49 | Φ55 |
| Distance between phases (mm) | 150 ± 1.5 | ||
Outline dimension drawing of VS1 (VTD6)-12 withdrawable type circuit breaker (For cabinet width 650mm)
| Rated current (A) | 630 | 1250 | 1600 |
| Rated short circuit breaking current (A) | 20, 25, 31.5 | 25, 31.5, 40 | 31.5, 40 |
| Dimension of static contact (mm) | Φ35 | Φ49 | Φ55 |
| Distance between phases (mm) | 210 ± 1.5 | ||
Outline dimension drawing of VS1 (VTD6)-12 withdrawable type circuit breaker (For cabinet width 880mm)
| Rated current (A) | 1600 | 2000 | 2500 | 3150 | 4000 |
| Rated short circuit breaking current (A) | 31.5, 40 | 31.5, 40 | 40, 50 | ||
| Dimension of static contact (mm) | Φ79 | Φ109 | |||
| Distance between phases (mm) | 275 ± 1.5 | ||||
Outline dimension drawing of VS1 (VTD6)-12 withdrawable type circuit breaker (For cabinet width 1000mm)
C) Fixed type - 24kV
Note:
1. The outgoing conductive surface of 1600A fixed & sealed pole and transition conductive block of the connecting busbar shall be provided by customer.
2. The dimension in brackets refers to the dimension from the outgoing terminal of the composite insulated pole to the center of the pole.
1. The outgoing conductive surface of 1600A fixed & sealed pole and transition conductive block of the connecting busbar shall be provided by customer.
2. The dimension in brackets refers to the dimension from the outgoing terminal of the composite insulated pole to the center of the pole.
| Rated current (A) | 630 | 1250 | 1600 |
| Rated short circuit breaking current (A) | 20, 25, 31.5 | 25, 31.5, 40 | |
| Distance between phases (mm) | 275 ± 1.5 | ||
| Top interlock L1 of mechanism | 30, 50 (Interlock extended from left or right, and the length can be made as per client requirements) | ||
| Spindle interlock L2 (mm) | 30, 50 (Interlock extended from left or right, and the length can be made as per client requirements) | ||
Outline dimension drawing of VS1 (VTD6)-24 fixed type circuit breaker (Distance between phases is 275mm)
| Rated current (A) | 1600 | 2000 | 2500 | 3150 |
| Rated short circuit breaking current (A) | 31.5, 40 | |||
| Distance between phases (mm) | 275 ± 1.5 | |||
| Top interlock L1 of mechanism | 30, 50 (Interlock extended from left or right, and the length can be made as per client requirements) | |||
| Spindle interlock L2 (mm) | 30, 50 (Interlock extended from left or right, and the length can be made as per client requirements) | |||
Outline dimension drawing of VS1 (VTD6)-24 fixed type circuit breaker (Distance between phases is 275mm)
D) Withdrawable type - 24kV (trolley travel distance is 300mm)
| Rated current (A) | 630 | 1250 | 1600 |
| Rated short circuit breaking current (A) | 20, 25, 31.5 | 25, 31.5, 40 | 31.5, 40 |
| Dimension of static contact (mm) | Φ35 | Φ49 | Φ55 |
| Distance between phases (mm) | 275 ± 1.5 | ||
Outline dimension drawing of VS1 (VTD6)-24 withdrawable type circuit breaker (For cabinet width 1000mm)
| Rated current (A) | 1600 | 1600 | 2000 | 2500 | 3150 |
| Rated short circuit breaking current (A) | 31.5, 40 | 31.5, 40 | 31.5, 40 | ||
| Dimension of static contact (mm) | Φ55 | Φ79 | Φ109 | ||
| Distance between phases (mm) | 275 ± 1.5 | ||||
Outline dimension drawing of VS1 (VTD6)-24 withdrawable type circuit breaker (For cabinet width 1000mm)
Frequently Asked Questions (FAQ)
What is the rated voltage range for the VS1 (VTD6) series circuit breaker?
The VS1 (VTD6) series indoor high voltage AC vacuum circuit breaker is suitable for switchgears with rated voltages of 12kV to 24kV.
What standards do these circuit breakers comply with?
The products comply with GB/T1984, DL/T403, IEC60694, and IEC62271-100 standards, ensuring high quality and reliability.
What are the recommended ambient operating temperatures?
The standard operating ambient temperature range is from -15 ℃ to +40 ℃. For service conditions exceeding this limit, please contact the manufacturer.
What is the mechanical life expectancy of the VS1 (VTD6) circuit breaker?
The standard configurations support a mechanical life of 20,000 operations. For the 50kA breaking current class, the mechanical life is rated at 10,000 operations. Higher mechanical life requirements can be customized upon request.
What are the typical opening and closing times?
The closing time of the circuit breaker ranges between 30ms and 70ms, while the opening time ranges between 15ms and 45ms.
Are there both fixed and withdrawable options available?
Yes, the VS1 (VTD6) series can be used as a fixed installation unit or configured as a withdrawable handcart unit with a chassis.