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1.VD4 embeded poles, ABB similar, rated voltage 12KV/24KV, 630A
2.Prompt delivery
3.Competitive price
4.well and good quality
| MAIN TECHNICAL SPECIFICATION | UNIT | SPECIFICATION | |
| Rated voltage | kV | 12/24 | |
| Rated current | A | 630 | |
| Rated frequency | Hz | 50/60 | |
| Short-duration（1min） power frequency withstand voltage | kV | 48 | |
| Lightning impulse withstand voltage | kV | 95 | |
| Rated short-circuit breaking current | kA | 20 | |
| Rated peak withstand current | kA | 50 | |
| Rated short-circuit making current | kA | 50 | |
| Rated short-time withstand current | kA | 20 | |
| Rated duration of short-circuit | S | 4 | |
| Rated breaking current of single capacitor bank | A | 400 | |
| Rated breaking current of back to back capacitor bank | A | 400 | |
| Rated operating sequence | O-0.3s-CO-180s-CO | ||
| Breaking operations of rated short circuit breaking current | Time | 30 | |
| Mechanical endurance | Time | 20000 | |
| Contact self-close force | N | 80±50 | |
| Force required to hold contacts open at full stroke | N | 150±50 | |
| Circuit resistance at lower limit of rated contact force | mΩ | ≤ 35 | |
| Contact limit erosion | mm | 3 | |
| Gas pressure inside vacuum interrupter | Pa | ≤ 1X10-3 | |
| Partial discharge | Pc | ≤ 5 | |
| Weight of moving parts | Kg | ||
| Weight of vacuum interrupter embedded poles | Kg | ||
| MAIN TECHNICAL SPECIFICATION | UNIT | SPECIFICATION |
| 630 | ||
| Clearance between open contacts | mm | 9±1 |
| Average opening speed | m/s | 1.1±0.15 |
| Average closing speed | m/s | 0.7±0.2 |
| Rated contact pressure | N | 2000±200 |
| Contact bouncing duration at closing operation | ms | ≤ 2 |
| Out of simultaneity of contact closing and opening | ms | ≤ 2 |
| Bouncing back amplitude of opening contact | mm | ≤ 3 |
Information for solid seal pole column
From the development of insulation on breakers,it can be divided into three generations:air, composite and solid insulation. And so-called solid insulation means solid seal pole column,which might represent the great advancement of insulation on vacuum breakers.Since the epoxy can be used to replace the insulating and mechanical supports,the breakers therefore become compact and simple and are able to service under humid and dusty conditions.When the external insulation of miniature chambers in air condition fail to fulfill the requests of specifications,solid seal pole column are therefore introduced and now become one of the most applicable ways in the field of medium voltage breakers either at home or abroad.
Manufacturer of power transmission and distribution equipments.
We will contact you within 1 working day, please pay attention to the email with the suffix “@wolunele.com”.