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E-mail
info@volcano-electrical.com
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Phone
+86-577-61668058
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Address
Building 2,59, Weishiliu Road, Economic Development Zone, Chengdong Street, Yueqing, Zhejiang, China
Product Categories
Zhejiang Volcano electrical technology Co., LtdFree·1YRS
Circuit Breaker
NegotiableUpdate on October 06
- Model
- Nature of the Manufacturer
- Other
- Product Category
- Vacuum Circuit Breaker
- Place of Origin
- City, Province
Overview
With a rated voltage of 12kV,three phase AC frequency of 50Hz, draw out type vacuum circuit breaker can be a flexiable unit to protect line equipment with short-circuit situation or frequent operations.
Product Details
General
The vacuum circuit breakers of type VD4 are intended for indoor installation in air-insulated switchgear systems. They have a switching capacity capable of handling the loads occurring at start-up and shutdown of equipment and plant units both in normal and in fault state.Vacuum circuit-breakers have particular advantages for use in networks where there is a high switching frequency in the working current range and/or where a certain number of short-circuit breaking operations are expected. Type VD4 vacuum circuit-breakers are suitable for autoreclosing, and have exceptionally high operating reliability and long life. The vacuum circuit breakers of type VD4, designed in column form, can be supplied both as individualunits for switchgear T ype SM6, Uniswitch, HXGN, etc.
Main Technical Datas
| No. | Item | Unit | Parameters | |
| 1 | Rated voltage | kV | 12/17.5 | 24 |
| 2 | Rated frequency | Hz | 50/60 | |
| 3 | Rated current | A | 630/800/1250/1600 | |
| 4 | 1min Power frequency withstａnd voltage | kV | 38/42/45 | 50 |
| 5 | Lightning impulse withstａnd voltage | kV | 75/95 | 125/150(*) |
| 6 | Rated short circuitbreaking current (peak) | kA | 50/63/80 | |
| 7 | Rated shortbreaking current | kA | 20/25/31.5 | |
| 8 | Rated short circuit making current (peak) | kA | 50/63/80 | |
| 9 | Cable chargebreaking current in earthing fault | A | 20 | 20 |
| 10 | Rated withstａnd current (peak) | kA | 50/63/80 | |
| 11 | Short time withstａnd current (4s) | kA | 20/25/31.5 | |
| 12 | Mechanism life | times | 10000 | |
| 13 | Operation sequence | O-0.3-CO-180S-CO | ||
| 14 | Rateof riseof transient recovery voltage | kV/uS | 0.34/0.42 | 0.47 |
| 15 | Peak of transient recovery voltage | kV | 20.6/30 | 41 |
Our Services
1. | Pre sale service |
a. | make technical solution |
b. | send quotation, technical data sheet and drawing |
c. | prepare power transmission plan, testing plan,ａnd shipment plan |
2. | In sale service |
a. | supervise the manufacturing schedule totally in accordance with the plan |
b. | send photos to customer during every manufacturing process(hold point) |
c. | inform the customer one week before testinng. |
3. | After sale service |
a. | installation and commissioning, training the workers |
b. | quick response within 12 hours any time |
c. | provide 12 months gurantee period normally. |
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