GB 311.1 12KV HV Indoor Vacuum Circuit Breaker
GB 311.1 12KV HV Indoor Vacuum Circuit Breaker image
Brand Name :
Suntech
Model Number :
ZN63(VS1)-12
Certification :
ISO
Place of Origin :
Ningbo,China
MOQ :
1 PCS
Price :
Get the lastest price
Payment Terms :
L/C , T/T, Western Union, MoneyGram
Supply Ability :
10000 pcs per month
Delivery Time :
30-35 days after Payment
Packaging Details :
Exported Wooden Boxes
Type :
Vacuum Circuit Breaker
Poles Number :
3
Ambient temperature :
-40°C-+40°C
Altitude :
≤1000m
Material :
Stainless steel or hot-dip galvanized steel.
Rated Frequency :
50/60HZ
VS1 type 12KV High Voltage Indoor Vacuum Circuit Breaker
ZN63(VS1) indoor high-voltage alternatigcurrent vacuum circuit breaker has a frequency of 50Hz and a rated voltage of 12kV. It applies to the electrical equipment control and protection in industrial and mining enterprises, power plants and substations, particularty to the places needing frequent operation. It can be fixed in a switch cabinet or istalldl on a handcart.
With stable performance and convenient istallation, it is the best choice for the control and protection of high-voltage power transmission and distribution systems.
Overall dimension of VF(R)-12(wheeled) indoor high-voltage alternating-current vacuum circuit breaker
The actuator employs spring energy storage which can be done electrically or manually. When the circuit breaker is operating, the energy generated by the energy storage spring is transferred to the connecting rod mechanism through an output cam and then to the movable contact through the connecting rod mechanism. The advanced and appropriate buffer avoids bounces in breaking and reduces the impact and vibration in breaking. The actuator almost needs no maintenance or adjustment. It can operate for up to 10000 times.
Overall dimension of VS1-24(wheeled) embedded indoor high-voltage alternating-current vacum circuit breaker
Overall dimension of VS1-12(fixed) indoor high-voltage alternating-current vacuum circuit breaker(large-current)
| ltem | Unit | Reference value | |
| Rated voltage | kV | 12 | |
| Rated insulation level |
Lightning impulse withstand voltage |
kV | 145 |
| 1min power-frequency withstand voltage | kV | 65 | |
| Rated frequency | Hz | 50/60 | |
| Rated current | A | 630/1250/1600/2000/2500/3150 | |
| Rated short-circuit breaking current | KA | 20/25/31.5 | |
| Rated short-circuit making current (peak value) | KA | 50,63,80 | |
| Rated short-time withstand current | KA | 20/25/31.5/40 | |
| Rated withstand current (peak value) | KA | 50,63,80 | |
| Required operation sequence | O-0.3s-CO-180s-CO | ||
| Rated short-circuit duration | S | 4 | |
| Times of making-breaking with the rated short-circuit current | Times | 30 | |
| Mechanical life | M2 level | ||
| Weight | kg | 150 | |
1.The fuse can cut off a large short-circuit current in less than 10 ms and its breaking current can be up to 50KA. Thus, it can protect the transformer most efectively.
2.In terms of match between the transformer and the fuse (Table 1), the potential surge current of the fuse must be considered. Thus, fusing current of the fuse must be 1.6 times of the rated value; designer must consider possible fluctuations of other parameters of the grid and reserve margins for them. If a fuse is selected for high-voltage motor protection, designer must consider frequency of start of the high-voltage motor because frequent starts of the high-voltage motor will result in the fuse's failure when timely cooling is not available.
|
Primary voltage of the transformer (kV) |
Capacity of the transformer (kVA) |
Model of the fuse |
Rated current of the fuse (A) |
|
|
Model for the domestic market |
Model for international market |
|||
| 6.6 | 200 | XRNT-10 | 12kV BDGHC | 31.5 |
| 250 | 40 | |||
| 300/315 | 50 | |||
| 400 | 12kV BDGHC | 63 | ||
| 500 | 80 | |||
| 630 | 90 | |||
| Standard |
1. IEC 62271-100 High-voltage alternating-current circuit-breakers 2. GB/T 11022-2011 Common specifications for high-voltage switchgear and controlgear standards 3. GB 1984 High-voltage alternating-current circuit-breakers 4. GB 311.1 Insulation co-ordination for high voltage transmission and distribution equipment
|
| Operating conditions |
1. Ambient temperature: – 40℃-+40℃ (below 35℃ within 24 hours) 2. Relative humidity:≤95% (daily average) or≤90% (monthly average) 3. Altitude: ≤1000m |
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