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Help Center12kv Rated Voltage VMD3 MV VCB for Compound Insulation Method and Solid Insulation Method
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Certification:GB1984 , IEC
12kv Rated Voltage VMD3 MV VCB for Compound Insulation Method and Solid Insulation Method
Summary
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
Technical Parameters
|
NO |
Item |
Unit |
Technical Date |
|||
|
1 |
Rated voltage |
kV |
12 |
|||
|
2 |
Rated insulating level |
Rated short time power frequency withstand voltage (1min) |
42 |
|||
|
Raed lighting inpulse withstand voltage (peak value) |
75 |
|||||
|
3 |
Rated Frequency |
Hz |
50 |
|||
|
4 |
Rated current |
A |
630 |
630 |
1250 |
1250 |
|
1250 |
1250 |
1600 |
1600 |
|||
|
2000 |
2000 |
|||||
|
2500 |
2500 |
|||||
|
3150 |
3150 |
|||||
|
4000 |
4000 |
|||||
|
5 |
Rated short circuit breaking current |
kA |
20 |
25 |
31.5 |
40 |
|
6 |
Rated short time withstand current |
20 |
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