We are a factory specializing in the production of Vacuum interrupter for indoor load switch ,The optimization of cup-shaped longitudinal magnetic pole structure design makes the electromagnetic field distribution uniform and reasonable, and improves the stability of breaking capacity. Special precision technology improves the insulation level of products.We look forward to becoming your long-term partner in China.
The main function of vacuum interrupter for indoor load switch is to cut off the power supply of ceramic shell vacuum interrupter through the excellent insulation of vacuum in the pipe. Moreover, it can quickly extinguish the arc, restrain the current and avoid accidents.
TF-12/630-20F3 | |||
Main Technical Specification | |||
Parameter name | Unit | Value | |
1 | Rated frequency | Hz | 50 |
2 | Rated Voltage | kV | 12 |
3 | Rated short-time(1min) power-frequency withstand voltage | kV | 42/48★ |
4 | Rated lightning impulse withstand voltage(Peak) | kV | 85 |
5 | Rated Current | A | 630 |
6 | Rated short-time withstand current(4s) | kA | 20 |
7 | Rated peak withstand current | kA | 50 |
8 | Rated short-circuit making current | kA | 20 |
9 | Rated active load breaking current | A | 630 |
10 | Rated closed-loop breaking current | A | 630 |
11 | Rated breaking current of cable charging | A | 10 |
12 | Rated breaking current of single capacitor bank | A | 400 |
13 | Rated breaking current of back-to-back capacitor bank | A | 400 |
14 | Circuit resistance at lowest rated contact force | μΩ | ≤30 |
15 | Closing force due to bellow and atmosphere | N | 75±30 |
16 | Force required to hold contacts open at full stroke | N | 130±40 |
17 | Mechanical endurance | second | 10000 |
18 | Contacts limit erosion | mm | 3 |
19 | Storage life | Year | 20 |
(Mechanical date of matching switchgear) | |||
1 | Clearance between open contacts | mm | 9±1 |
2 | Average opening speed (0~75% contact gap) | m/s | 1.1±0.2 |
3 | Average closing speed(30% contact gap-contact close position) | m/s | 0.6±0.2 |
4 | Rated contact pressure | N | 900±100 |
5 | Contact bouncing duration at closing operation | ms | ≤2 |
6 | Closing and Opening non-simultaneity of three-phase contacts | ms | ≤1 |
7 | Maximum Rebound during opening | ms | ≤2 |
Meets or exceeds the electrical endurance requirements of class E2 for autoreclosing duty per IEC 62271-100 and GB1984-2014 |
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Note:“★”Within transformer oil or equivalent isolation medium | |||
777 Electric brand vacuum interrupter adopts ceramic shell. The vacuum interrupter is mainly composed of air tight insulating shell, conductive circuit, shielding system, contact, bellows, etc. Vacuum interrupter for indoor load switch has the characteristics of strong arc extinguishing ability, long service life, less maintenance, reliable performance, safety, compactness and light weight. The 6Vacuum interrupter for indoor load switch can be used in power transmission and distribution control systems, as well as distribution systems such as metallurgy, mining, petroleum, chemical industry, railway, broadcasting, communication and industrial high-frequency heating.
Vacuum interrupter for indoor load switch is the core component of medium and high voltage power switch. rated voltage range of vacuum interrupter for load switch is 1.14kv to 40.5kV; The rated current range is 630A to 1250A. The vacuum contactor is required to operate frequently under a certain load current and is qualified to operate 500.000 to 1000.000 times. As the most important component, vacuum interrupter determines its performance to a certain extent.
Vacuum interrupter for indoor load switch : CE, CCC, CQC, IP68, ISO9001-2015
Realize zero defect of products and wholeheartedly provide customers with high-quality products with stable quality, reliable performance and high added value.
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