Technical indicators
·Rated voltage (KV) 40.5
·Power frequency withstand voltage (KV) 95 (1min)
·Impact withstand voltage (KV) 185
·Rated frequency 50Hz
·Rated current (A) 1250/1600/2000
·Rated thermal stability current (KA 4S) 25/31.5/40
·Rated dynamic stability current (KA) 63/80
·Rated short-circuit breaking current (KA) 25/31.5/40
·Rated short-circuit making current (KA) 63/80
·Rated voltage (V) of opening and closing and auxiliary circuits: DC 24, 36, 48, 60, 110, 220, AC 110, 220
·Protection level IP3X
Technical data
| Items | Unit | Data |
| Rating Voltage | KV | 40.5 |
| Rating Frequency | Hz | 50 |
| Rating Current | A | 1250,1600,2000 |
| Rating Short-circuit Breaking Current | KA | 25,31.5 |
| Rating Making Current (Peak) | KA | 63,80 |
| 4s Thermal Stability Current | KA | 25,31.5 |
| Rating Dynamic Current (Peak) | KA | 63,80 |
| Rating Insulation Level | 1min Power Frequency Withstand Voltage (r.m.s) | KV | 95 |
| Lightning Impulse Withstand Voltage (Peak) | KV | 185 |
| 1min Power Frequency Voltage Across the open gap (r.m.s) | KV | 118 |
| Lightning Impulse Withstand Voltage Across the open gap (Peak) | KV | 215 |
| Enclosure Protection Class | | Enclosure IP4X, Between Compartments IP2X |
| Enclosure Dimension (Width*Depth*Height) | mm | 1400*2800*2600
1600*2800*2600 |
| Type of Circuit Breaker | | VCB: ZN85-40.5
SF6 Circuit Breaker |
*Note: order switchgear should provide SLD(Single-line diagram) by customer
Main components characteristics:
VS1-40.5 Indoor Vacuum Circuit Breaker
Voltage: 40.5kV
Current: 630 1250 1600 2000 2500A
Short circuit breaking current: 20 25 31.5KA
Mechanical life: 20,000 times
KNKONG VS1-40.5 Technical data
| Items | Unit | Date |
| Rated voltage | KV | 40.5 |
| Rated short-time power frequency withstand voltage (1min) | 95 |
| Rated lightning impulse withstand voltage (peak) | 185 |
| Rated freq | Hz | 50/60 |
| Rated current | A | 1250 1600 2000 2500 4000 |
| Rated short-circuit drop-out current | KA | 25 31.5 |
| Rated short-time withstand current | 25 31.5 |
| Rated short-time continual time | s | 4 |
| Rated peak withstand current | KA | 63 80 |
| Rated short-circuit closing current | 63 80 |
| Rated single/ back-to-back capacitor bank drop-out current | A | 630/400 |
| Opening time (rated volt.) | ms | 35~60 |
| Closing time (rated volt.) | 50~100 |
| Mechanical life | times | 20000 |
| Rated break times for rated short drop-out current | s | 20 |
| Rated operation voltage | V | AC110/220 DC110/220 |
| Rated current of power storing motor | W | 230 |
| Average opening speed | m/s | 1.6~2.0 |
| Average closing speed | 0.5~0.8 |
| Rated operation procedure | | opening-0.3s-closing opening-180s-closing opening |
Knkong Electric has provided 33KV switchgear for the international market for more than 10 years.
