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| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Energy-storage Type |
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12kV High Voltage Vacuum Circuit Breaker with Embedded Poles
VIB1-12 series of Indoor High Voltage Vacuum Circuit Breaker with embedded poles is three phase A.C.50Hz indoor power distribution equipment
with the rated voltage of 24kV.It's used for protecting and controlling the electrical equipment in the fileds of industry&mining enterprise,power plants and substation.
The main conductive circuit of this type vacuum circuit breaker with spring mechanism is embedded pole, that can greatly improve the reliability of insulation, mechanical and breaking performance,and really realize the free-maintance and longer mechanical&electrical life.
This type Vacuum Circuit Breaker conforms to national standards and the stipulations of IEC standard.The capability reaches grade of M2-E2-C2.
The products is used for many kinds of switchgear like KYN28-12(GZS1)and can be fixed installation.
Applying ambient conditions
1.Ambient temperature:-15ºC~+40ºC.
2.Ambient humidity:the average humidity of a day should be no more than 95%; the average humidity of a month should be no more than 90%.
3.Earthquake intensity:not exceed 8 degrees.
4.Saturated vapour pressure:the average pressure of a day should be no more than 2.2kPa; the average pressure of a month should be no more than 1.8kPa.
5.The height above sea level:1000m(besides the special requirements).
6.It should be installed in the places without fire, explosion, serious filth, chemical erosion and violent vibration.
Main technical parameter
| Item | Unit | Data |
| Rated voltage | KV | 12 |
| Rated 1min power frequency withstand voltage(vacuum open contacts) insulation Lightening impulse withstand voltage(vacuum open contacts) level |
KV KV |
42 75 |
| Rated frequency | HZ | 50 |
| Rated current | A | 630,1250 |
| Rated short-time withstan current | KA | 16,20,25, 31.5 |
| Rated withstand current(peak) | KA | 40,50,63 |
| Rated short-circuit breaking current | KA | 16,20,25 |
| Rated short-circuit making current | KA | 40,50,63 |
| Rated duration of short-circuit | S | 4 |
| Rated operating sequence | O-0.3S-CO-180S-CO | |
| Mechanical life | M2 class(30000times) | |
| Rated voltage of operating power | AC 220/DC 220 | |
| Full breaking time | ≤70 | |
| Electrical life | E2 class |
| Rated voltage | Rated current | Rated short-circuit | P | A | B | D |
| KV | KA | breaking current, KA | mm | mm | mm | mm |
| 12 | 630,1250 | 20,25,31.5 | 150 | 20 | 410 | 450 |
| Rated voltage | Rated current | Rated short-circuit | P | A | B | C | D | W |
| KV | KA | Breaking current, kA | mm | mm | mm | mm | mm | mm |
| 630 | 20,25 | 35 | ||||||
| 12 | 630,1250 | 20,25,31.5,40 | 150 | 494 | 456 | 490 | 502 | 49 |
| Series Number | Symbol | Name | Remark |
| 1 | YQ-Y9 | Indirect over-current release | Chosen element |
| 2 | Y1-Y4 | Rectifier element | |
| 3 | KO | Inner mechanism anti-jumping relay | |
| 4 | P | Handle operation mechanism | |
| 5 | Y1 | blocking eletromagnet | Chosen element |
| 6 | HQ | Closing release | |
| 7 | TQ | Breaking release | |
| 8 | M | Energy storing engine | |
| 9 | S9 | assistant switch used at operation position | |
| 10 | S8 | assistant switch used, at test positin | Chosen element |
| 11 | S2 | Blocking electromagnet assistant switch | |
| 12 | S1 | Inching switch for energy storing | |
| 13 | QF | assistant switch of breaker contact |
Q1: Are you a trading company or manufacturer ?
A1: We are a professional factory with 7 years experience in the field of high and low voltage power transformers, substation, vacuum circuit breaker, power equipment.
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