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China VS1 (VTD12-24kV Indoor High Voltage AC Vacuum Circuit Breaker Suppliers & 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
Outline dimension drawing of VS1 (VTD6)-12 fixed type circuit breaker
(Distance between phases is 150mm)
| 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 210mm)
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 275mm)
| 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) | ||
B) Withdrawable type - 12kV (trolley travel distance is 200m)
Outline dimension drawing of VS1 (VTD6)-12 withdrawable type circuit breaker
(For cabinet width 550mm)
| 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 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) | 150 ± 1.5 | ||
Outline dimension drawing of VS1 (VTD6)-12 withdrawable type circuit breaker
(For cabinet width 880mm)
| 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 1000mm)
| 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 | ||||
C) Fixed type - 24kV
Outline dimension drawing of VS1 (VTD6)-24 fixed type circuit breaker
(Distance between phases is 275mm)
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) | |||
D) Withdrawable type - 12kV (trolley travel distance is 300m)
Outline dimension drawing of VS1 (VTD6)-24 withdrawable type circuit breaker
(For cabinet width 1000mm)
| 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 | ||||
Frequently Asked Questions (FAQ)
What applications is the VS1 (VTD6) series vacuum circuit breaker suitable for?
It is designed for protecting and controlling electrical equipment in industries, mining enterprises, power plants, and substations with rated voltages of 12~24kV. It is especially suitable for environments requiring frequent operations at rated current or multiple short-circuit currents.
Which standards do the VS1 (VTD6) series comply with?
The technical indicators of the product meet GB/T1984, DL/T403, IEC60694, and IEC62271-100 standards.
What are the environmental limits for normal service conditions?
The standard service conditions require an ambient temperature of -15℃ to +40℃, altitude ≤ 1000m, daily average relative humidity ≤ 95%, monthly average relative humidity ≤ 90%, earthquake-resistant level under grade 8, and a site free from dripping, flammable/explosive hazards, chemical corrosive gases, and violent vibration.
What is the mechanical life of this vacuum circuit breaker?
The mechanical life is 20,000 operations for standard current classes (up to 40kA) and 10,000 operations for the 50kA current class. If you require a higher mechanical life, please consult with the manufacturer.
Does the 4000A current rated circuit breaker require extra cooling?
Yes, the 4000A rated current configuration requires forced air cooling as specified in the technical parameters.
What are the typical opening and closing times?
The closing time is between 30ms and 70ms, and the opening time ranges from 15ms to 45ms.