VHY1-12/24/40.5 Model indoor AC HV vacuum circuit breaker is a type of holistic sealed HV switchgear with small volume and compact structure. It applies to the power system of rated voltage 12/24/40.5Kv, three-phase AC 50/60Hz, and is used to control and protect electrical apparatus and circuits with frequent operations. This product conforms to IEC62271-100 and GB1984, JB3855 and DL403.
Technical Specifications of VHY1-12/24/40.5 Indoor Medium Vacuum Circuit Breaker
| VHY1-12/24/40.5 Indoor Medium Vacuum Circuit Breaker | ||||||
| Technical Parameters | ||||||
| No. | Name | Unit | Data | |||
| 1 | Rated Voltage | Kv | 40.5 | |||
| 2 | Rated Current | A | 630, 1250, 1600, 2000, 2500, 3150 | |||
| 3 | Rated Insulation Level | Rated 1min P.F Withstand Voltage | Between Phases and Phase to Earth | Kv | 95 | |
| Between gaps | 95 | |||||
| Rated Lightning Withstand Voltage | Between Phases and Phase to Earth | 185 | ||||
| Between Gaps | 185 | |||||
| 4 | Rated Frequency | Hz | 50 | |||
| 5 | Rated Short Time Withstand Voltage 4s | kA | 25 | 31.5 | ||
| 6 | Rated Breaking Current | 25 | 31.5 | |||
| 7 | Rated Peak Withstand Current | 63 | 80 | |||
| 8 | Rated Short Time Making Voltage | 63 | 80 | |||
| 9 | Rated Short Circuit Durance | s | 4 | |||
| 10 | Rated Operation Consequence | O-0.3s-CO-180s-CO | ||||
| 11 | Mechanical Life | Time | 10,000 | |||
| 12 | Rated Out of Phase Earthing Fault Breaking Current | kA | 21.7 | 27.4 | ||
| 13 | Rated Cable Charging Breaking Current | A | 50 | |||
| 14 | Electric Life | E2 class | ||||
Mechanical Characters of Circuit Breaker
| No. | Name | Unit | Data | |||||
| 1 | Open Distance Between Contacts | mm | 19±1 | |||||
| 2 | Over-travel of Contacts | 5±0.5 | ||||||
| 3 | Central Pole Distance | 280±1.5 | ||||||
| 4 | Permissible Wearable for Contacts | 3 | ||||||
| 5 | Average Opening Speed | m/s | 17±0.3 | |||||
| 6 | Average Closing Speed | 0.6± 0.2 | ||||||
| 7 | Closing Spring Time of Contacts | m/s | ≦5 | |||||
| 8 | Time Spread Between Poles at Closing/Opening | ≦2 | ||||||
| 9 | Resistance of Main Circuit | 1250A | μΩ | Fixed type | ≦35 | Handcart | ≦45 | |
| 1600A | ≦35 | ≦40 | ||||||
| 2000A | ≦25 | ≦30 | ||||||
| 2500A 3150A | ≦20 | ≦25 | ||||||
| 10 | Opening Time | ms | 15~50 | |||||
| 11 | Closing Time | 40~75 | ||||||
| 12 | Characters of Operating Mechanism | 65%~120%rated voltage | Voltage reliably | |||||
| ≦30% rated voltage | No open | |||||||
Technical Parameters of Operating Mechanism
| No. | Name | Unit | Data |
| 1 | Rated Opening Voltage/Current | V/A | DC(AC)220/1.5, DC(AC)110/3 |
| 2 | Rated Closing Voltage/Current | DC(AC)220/1.5, DC(AC)110/3 | |
| 3 | Rated Short Time over Current Tripping Current | A | 5 |
| 4 | Rated Voltage of Second Wiring | V | DC(AC)220/DC(AC)110 |
| 5 | Rated Voltage of Charging Motor | DC(AC)220/DC(AC)110 | |
| 6 | Rated Output Power of Charging Motor | W | 70 |
| 7 | Charging Time | s | ≦12 |
| 8 | Rated 1 Min P.F Frequency of Second Wiring | V | 2000 |
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