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China VS1 (VTDIndoor High Voltage AC Vacuum Circuit Breaker Suppliers - 12kV to 24kV Factory Solutions
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.
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
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 the requirements of clients) | ||
| Spindle interlock L2 (mm) | 30, 50 (Interlock extended from left or right, and the length can be made as per the requirements of clients) | ||
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 the requirements of clients) | ||
| Spindle interlock L2 (mm) | 30, 50 (Interlock extended from left or right, and the length can be made as per the requirements of clients) | ||
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 the requirements of clients) | ||
| Spindle interlock L2 (mm) | 30, 50 (Interlock extended from left or right, and the length can be made as per the requirements of clients) | ||
Outline dimension drawing of VS1 (VTD6)-12 fixed type circuit breaker (Distance between phases is 275mm)
B) Withdrawable type - 12kV (trolley travel distance is 200m)
| 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 the requirements of clients) | ||
| Spindle interlock L2 (mm) | 30, 50 (Interlock extended from left or right, and the length can be made as per the requirements of clients) | ||
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 the requirements of clients) | |||
| Spindle interlock L2 (mm) | 30, 50 (Interlock extended from left or right, and the length can be made as per the requirements of clients) | |||
Outline dimension drawing of VS1 (VTD6)-24 fixed type circuit breaker (Distance between phases is 275mm)
D) Withdrawable type - 12kV (trolley travel distance is 300m)
| 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
What is the application range of the VS1 (VTD6) series vacuum circuit breaker?
It is applicable to switchgears with a rated voltage of 12~24kV, widely used for protecting and controlling electrical equipment in industrial and mining enterprises, power plants, and substations. It is highly suitable for operations requiring frequent current switching or multiple short-circuit protection actions.
Which international and national standards does this product meet?
The VS1 (VTD6) series meets the basic parameters and technical indicators of GB/T1984 (High voltage AC circuit breaker), DL/T403 (High voltage AC circuit breaker), IEC60694 (Common specifications for high-voltage switchgear and controlgear standards), and IEC62271-100 (Alternating current circuit breakers).
What are the normal environmental service conditions for installation?
Normal conditions include an ambient temperature between -15℃ and +40℃, altitude ≤ 1000m, daily average relative humidity ≤ 95%, monthly average relative humidity ≤ 90%, and earthquake resistant level < grade 8. The installation site should be free from dripping, flammable/explosive hazards, chemical corrosive gases, and violent vibration.
Does the VS1 (VTD6) support both fixed and withdrawable installations?
Yes. The circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker, which can be configured as a fixed installation unit or a withdrawable handcart unit with a chassis.
What are the opening and closing times of the circuit breaker?
The closing time is between 30 and 70ms, and the opening time is between 15 and 45ms.
Does the 4000A rated current configuration require special cooling?
Yes, the 4000A rated current configuration requires forced air cooling to ensure safe and stable operation under standard working conditions.