Overview
The VS1 indoor vacuum circuit breaker, designed for 12kV electrical systems, is an essential component for indoor applications. This breaker is extensively utilized in various settings, including utility grids, industrial and mining operations, power generation facilities, and substations. It plays a crucial role in managing and safeguarding electrical infrastructure such as cables, overhead lines, distribution stations, motors, transformers, generators, and capacitors. Its design caters specifically to scenarios that demand frequent operational cycles or the interruption of short circuit currents multiple times.
Environmental Conditions
Normal service condition
Ambient temperature Maximum temperature: +40 ° C Minimum temperature: -25 ° C
Ambient humidity Daily mean relative humidity: ≤95% Monthly mean relative humidity: ≤ 90%
Altitude: No more than 1000m The intensity of the earthquake was not more than 8 degrees
The use place is free from dripping water, flammable and explosive danger, chemical corrosive gas and violent vibration
Special service conditions
For special use conditions, by the manufacturer and the user to negotiate, and reached a consensus, to provide special design and supply;
Special conditions of use are:
① The altitude above 1000m;
②Places with condensation risk under high humidity or climate conditions with large humidity mutation.
Product Features
Efficient Arc-Quenching Performance: Incorporates cutting-edge vacuum arc-quenching technology to swiftly interrupt fault currents, significantly mitigating the thermal and electromagnetic impact on the equipment.
Superior Insulation Performance: The use of premium insulation materials and sophisticated design ensures outstanding insulation performance, even under high-voltage conditions, thereby preventing electrical faults.
Durability and Low Maintenance: The vacuum arc-quenching chamber's design minimizes maintenance needs while providing a mechanical lifespan exceeding 100,000 operations, guaranteeing enduring performance.
Compact and Versatile Design: Its compact structure coupled with versatile installation options enables flexible placement in diverse environments, catering to a broad range of user requirements.
Smart Control Capabilities: Offers optional smart control units for remote management, real-time status monitoring, and fault diagnosis, enhancing the operational intelligence of electrical grids.
Robust Environmental Adaptability: Engineered to withstand various environmental challenges, including extreme temperatures, humidity, and vibration, ensuring reliable function in adverse conditions.
Energy Efficiency and Eco-friendliness: The breaker's high-efficiency arc-quenching mechanism and energy-conservative design contribute to reduced power system consumption and operational costs, supporting sustainability goals.
NO. | Project | Unit | Numerical value | ||||
1 | Rated voltage | kV | 12 | ||||
2 | Rated short-time power frequency withstand voltage(1min) | 42 | |||||
3 | Rated lightning shock tolerance voltage (peak) | 75 | |||||
4 | Rated frequency | Hz | 50 | ||||
5 | Rated current | A | 630 1250 | 630 1250 1600 2000 2500 3150 | 1250 1600 2000 2500 3150 4000 | ||
6 | Rated short-circuit breaking current | kA | 20/25 | 31.5 | 40 | ||
7 | Rated short-time withstand current | 20/25 | 31.5 | 40 | |||
8 | Rated short circuit duration | S | 4 | ||||
9 | Rated peak tolerable current | kA | 50/63 | 80 | 100 | ||
10 | Rated short-circuit closing current | 50/63 | 80 | 100 | |||
11 | Secondary circuit power frequency withstand voltage (1min) | V | 2000 | ||||
12 | Rated single/back-to-back capacitor group breaking current | A | 630/400(800/400 for 40kA) | ||||
13 | Rated capacitor bank turn-on inrush current | kA | 12.5(Frequency not more than 100Hz) | ||||
14 | Switching time (rated voltage) | ms | ≤50 | ||||
15 | Closing time(rated voltage) | ≤60 | |||||
16 | Mechanical life | Time | 20000 | ||||
17 | Breaking times of rated current (electrical life) | 20000 | |||||
18 | Number of breaks of rated short circuit current | 50(40kA≤30) | |||||
19 | Kinematic and static contacts allow wear accumulative thickness | mm | 3 | ||||
20 | Rated closing operating voltage | V | AC110/220 DC110/220 | ||||
21 | Rated switching operating voltage | ||||||
22 | Rated voltage of energy storage motor | ||||||
23 | Rated power of energy storage motor | W | 70 | ||||
24 | Energy storage time | S | ≤10 | ||||
25 | Contact opening distance | mm | 11±1 | ||||
26 | Overstroke | 3.5±0.5 | |||||
27 | Contact closing bounce time | Ms | ≤2(40kA≤3) | ||||
28 | Three -phase switching and closing are different | ≤2 | |||||
29 | Average opening speed | m/s | 1.1±0.2 | ||||
30 | Average closing speed | 0.6±0.2 | |||||
31 | Main circuit resistance (fixed/hand) | μΩ | ≤45/60(630A)≤40/55(1250A) ≤30/50(1600-2000A)≤25/35(More than 2500A) | ||||
32 | Contact closing contact pressure | N | 2000±200(20kA)2400±200(25kA) 3100±200(31.5kA)4250±250(40kA) | ||||
33 | Rated operation sequence | Opening -0.3s(18OS)-Opening and closing 180S-Opening and closing |
Outline dimensional drawing
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