Vacuum Circuit Breaker VCB breaker VCB circuit breaker
Embedded pole,Adapter KYN-28 series switchgear
630A, 1250A,1600A,2000A,2500A
OEM & ODM,Complete equipment
CCC,ISO9001,CE, CB,IEC60898
VS1-Series embedded pole. vacuum circuit breakers are applicable to 12kV, three-phase AC 50Hz indoor switchgear and can serve as protection and control units for industrial and mining establishment transformer substation equipment. With modular and independent-frame design for their spring operating mechanisms, VS1-Series circuit breakers can operate with KYN28 mid-set and fixed switchgear. These circuit breakers are subject to both fixed installation and assembly with truck as a handcart unit
Normal service condition
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Altitude |
≤1000m |
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Ambient temperature |
Max |
+40℃ |
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Min |
-15℃ |
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Ambient humidity： Maximum average humidity |
24 hours ≤95% |
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1 month ≤90% |
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Maximum water vapor pressure |
24 hours ≤2.2kpa |
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1 month ≤1.8kpa |
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Solar radiation is negligible. Vibration from the outside of switchgears and control-gears is negligible. The ambient air has no obvious pollution of dust smoke, corrosive or combustible gases, steams or smog
VS1 Technical Parameters
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No. |
Item |
Unit |
Parameter |
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1 |
Rated voltage |
KV |
12/24 |
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2 |
Rated frequency |
Hz |
50 |
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3 |
Rated insulation level |
1min power frequency withstand voltage(r.m.s) |
KV |
42(phase-to-phase,phase-to-earth) 48(across the isolating distance) |
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Lighting impulse withstand voltage (peak) |
75(phase-to-phase,phase-to-earth) 85(across the isolating distance) |
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4 |
Rated current |
A |
630 |
630 |
1250 |
1600 |
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1250 |
1250 |
1600 |
2000 |
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2000 |
2500 |
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2500 |
3150 |
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4000 |
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5 |
Rated short-circuit breaking current |
KA |
20 |
25 |
31.5 |
40 |
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6 |
Rated short-time withstand current |
20 |
25 |
31.5 |
40 |
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7 |
Rated short-circuit marking current |
50 |
63 |
80 |
100 |
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8 |
Rated peak withstand current |
50 |
63 |
80 |
100 |
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9 |
Rated duration of short-circuit |
s |
4 |
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10 |
Rated operating sequence |
|
O-0.3s-O/C-180s-O/C |
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O-180s-O/C-180s-O/C(40KA) |
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11 |
Breaking times of rated short-circuit current |
Times |
30/20 times(40KA) |
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|
12 |
Mechanical endurance |
Ops |
20000 |
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13 |
Rated single capacitor bank breaking current |
A |
630 |
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14 |
Rated back-to-back capacitor bank breaking current |
400 |
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15 |
Double-earth fault breaking current |
27.4 |
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16 |
Allowable maximum contact erosion |
mm |
3 |
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17 |
Clearance between open contacts |
10±1 |
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18 |
Over stroke |
3.5±0.5 |
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19 |
Non-simultaneity of 3-phase opening and closing |
ms
|
≤2 |
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20 |
Bounce duration of contact closing |
≤2 |
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21 |
Average breaking speed (instant breaking 6mm) |
m/s
|
1.1±0.2 |
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22 |
Average making speed |
0.8±0.2 |
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|
23 |
Making time |
ms
|
≤100 |
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24 |
Breaking time |
≤50 |
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|
25 |
Resistance of each phase main circuit |
μΩ |
630A |
≤50 |
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1250A |
≤45 |
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1600A~2000A |
≤35 |
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≥2500A |
≤25 |
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|
26 |
Contact breaking bounce amplitude |
mm |
≤2 |
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|
27 |
Rated operating voltage |
Rated operating voltage(V)AC/DC |
V |
24* |
110 |
220 |
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Scope of normal operation voltage |
Opening:65%-120% rated voltage, in case the voltage is lower than 30% rated voltage,opening operation is not allowed |
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|
28 |
Rated voltage of energy storage motor |
V |
AC110/220,DC110/220 |
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29 |
Energy storage time |
s |
≤15 |
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