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Product description
IEC62271 - 100 Rated Insulating Level 42 / 75 kV 12kv VMD2 Indoor Vacuum Circuit Breaker
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 |
25 |
31.5 |
40 |
||
7 |
Rated peak withstand current |
50 |
63 |
80 |
100 |
||
8 |
Rated short-circuit closing current (peak value) |
50 |
63 |
80 |
100 |
||
9 |
4S rated short-time withstand current 4s |
20 |
25 |
31.5 |
40 |
||
10 |
Rated shock steady current |
50 |
63 |
80 |
100 |
||
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 (The value shoule be 800/400 while the current is 40kA) |
||||
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 |
35-70 |
||||
17 |
Brealing time(under Rated voltage) |
20-45 |
|||||
18 |
Permitted abrasion thickness of moving and fixed contacts |
mm |
3 |
||||
19 |
Energy storage times |
S |
≤15 |
||||
20 |
Contactor space |
mm |
9± 1 |
||||
21 |
Contacting travel |
3---4 |
|||||
22 |
Bounce time of Contactor during making |
ms |
≤2 |
||||
23 |
Different time of breaking / making of 3 phases |
≤2 |
|||||
24 |
Average breaking speed |
0.9-1.3 |
|||||
25 |
Average making speed |
0.4-0.8 |
|||||
26 |
Rebound amplitude of contact breaking |
mm |
≤3 |
||||
27 |
Conductance circuit resistance |
µΩ |
≤50 (630A) |
||||
≤45(1250A) |
|||||||
≤35(1600A-2000A) |
|||||||
≤25(More than 2500A) |
|||||||
28 |
The contacting pressure of of contactor during making |
N |
2000±200(20kA) |
||||
2400±200(35kA) |
|||||||
3100±200(31.5kA) |
|||||||
4750±250(40kA) |
|||||||
29 |
Rated operating sequence |
|
O- θ -CO-180s-CO |
||||
The average breaking speed is that of contactor’s first 6mm . The average making speed refers to the average speed of total Contactor space . When the rated short circuit breaking current is less than 40kA, θ is equal to 0.3S. When the short circuit breaking current is more than or equal to 40kA, θ is equal to 180S |
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Outline Dimension Drawing
Dear friends, pls contact us for the outline dimension drawing, we will give you quick reply.
Summary
The VMD2 series indoor circuit-breaker is our independent developed new generation 12 kv vacuuum circuit breaker.
Its main characters as follows:
the conductance circuit is installed in an three-phase insulating sleeve ,
its mechanism and conductance circuit adopts front and rear layout. And the mechanism
is our deveoped new design,
with simple construction, reliable operation, and rich manufacturing experiences of million sets ,
used and learned by many high-end vacuum circuit breaker manufacturers.
Technical standard
All the technical parameters of breaker completely satisfy the Standards Of GB1984
AC Highvoltage Breaker,
GB/T 11022 -1999 Common Specifications For High-Voltage Switchgear And Controlgear Standards,
China Power Sector Standards DL403.
Also meet the requirements of IEC62271-100, IEC56 and other main industrialized country’s similar standards
Testing
VMD2 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.
VMD2 circuit breaker can be applied to control and protect cable , trolly wire , transformer, g
enerator and capacitor bank in distribution system
Safety
VMD2 circuit breaker possesses perfect mechanical and electric interlock equipment , meanwhile ,
its high reliable operating performance and mechanical life , coodinated with matched switchgear cabinet ,
to ensure normal power distribution , operator and equipment’s safety.
More Information,Please See Our Official Website: www.meletek.com
Send your inquiry to this supplier