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24kv VMD3 Medium Voltage Circuit Breaker for Turnkey Engineering / Rated Current 630 A - [ Buy Service ]


Place of Origin : Ningbo,China
Post Date : 12-04-2012
Expiry Date : 12-05-2012


Trade Description

24kv VMD3 Medium Voltage Circuit Breaker For Turnkey Engineering / Rated Current 630 A
Technical Parameter

- - - -
NO | Item | Unit | Technical Date |
1 | Rated voltage  | KV | 24 |
2 | Rated insulating level | Rated short time power  Frequency withstand voltage(1min)           | 65 |
Rated lighting inpulse  Withstand voltage (peak value)               | 125 |
3 | Rated Frequency | Hz | 50 |
4 | Rated current  | A | 630 |
5 | Rated short circuit breaking current         | KA | 20 |
6 | Rated short time withstand current            | 20 |
7 | Rated peak withstand current   | 50 |
8 | Rated short-circuit closing current (peak value) | 50 |
9 | 4S rated short-time withstand current  4s  | 20 |
10 | Rated Dynamic Current | 50 |
11 | Rated making surge current of capacitor bank | 12.5(The frequency  Is less than 1000Hz) |
12 | Rated breaking current of single/symmetrical capacitor bank  | A | 630/400                                |
13 | Duration of rated short-circuit current | S | 4 |
14 | Power frequency withstand voltage of secondary circuit | V | 2000 |
15 | Rated operationl voltage | Making coil | AC110/220   DC110/220 |
Breaking coil | AC110/220   DC110/220 |
Energy-storage motor  | AC110/220   DC110/220 |
16 | Making time  (under Rated voltage) | Ms | ≤60 |
17 | Breaking time(under Rated voltage) | ≤45 |
18 | Permitted abrasion thickness of moving and fixed contacts  | Mm | 3 |
19 | Energy storage times  | S | ≤15 |
20 | Contactor clearance | Mm | 13± 1 |
21 | Contacting travel  | 4±1  |
22 | Bounce time of Contactor during making  | Ms | ≤2 |
23 | Different time of breaking / making of 3 phases  | ≤2 |
24 | Average breaking speed  | 1.1-1.7 |
25 | Average making speed  | 0.6-1.1 |
26 | Rebound amplitude of contact breaking | Mm | ≤3 |
27 | Conductance circuit resistance  | µΩ | ≤45 (630A) |
28 | Rated operating sequence |   | O- θ -CO-180s-CO |
29 | Mechanical life | Times | 10000 |
- - - -

General Provision

VMD3 lateral fixed type vacuum circuit breaker is our company’s independent developed new product for 12KV/24KV ,  

Its operating mechanism is new style spring operating mechanism, Developed by our company,  

With simple structure and reliable operation.

Product Features

▶ Satisfy the GB, IEC and other international standard

▶ Three-phase longitudinal conductance circuit,

Can be suitable for compound insulation method and solid insulation method(embedded pole).

▶ Compact structure

▶ Thoroughly meet users’requirements, Suitable for kinds of box-type substation, RMU and switchgear.

▶ Perfect mechanical and electrical interlock device, Further ensure the safe operation.

Testing

VMD3 series circuit breaker have passed has passed following 

Test ,  to ensure the product’s safe operation.

 

Type tests : power-frequency withstand voltage tests ,  lighting impact withstand voltage tests,  ,  temperature rising tests,  

Short-time withstand current tests ,

 peak withstand current tests , Short circuit breaking ability tests ,  mechanical lift tests, Ect

 

Routine test before out of factory: mechanical performance test  ,  power-frequency withstand voltage tests of the main circuit ,  insulating property  tests on control and auxiliary circuits ,

Measurement of ther resistance of the main circuit ,  interlock operating tests ,  mechanical operating tests,  

Electrical Equipment operating tests.

 

Scope of application

 

It is universally used in power plant ,  electric network ,  metallurgy industry petrochemical industry and infrastructures,

Such as airport ,  

Subway,  building.

VMD3 circuit breaker can be applied to control and protect cable ,  trolly wire , Transformer,  

Generator and capacitor bank in distribution system


Company Inforamtion
Ningbo Mingde Electrical Science&Technology Co.,Ltd
[ Exporter - China ]
 : 151Huapeng Road,Kandun Industrial Park,Cixi
 : 86-574-63287928
 : vacuumcircuit@126.com
 : www.vacuum-circuit-breakers.com

 : Alec Sunn
 : 86-574-63287928
 : 86-13625845635~
 : vacuumcircuit@126.com
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