The KYN61 medium voltage switchgear manufactured by our company
(KNKONG-ELECTRIC) is GB3906 "3-35kV AC metal sealed switchgear", GB
/ TII022 "Standard common technical requirements for high voltage
switchgear and control equipment", DL / T404 " It is compliant with
"AC high". Technical conditions for ordering voltage switchgear,
IEC60298, "AC metal closed switchgear and control equipment with
rated voltage above 1 kV and below 52 kV".
Using environment:
◆ Ambient temperature: upper limit +40°C; and the average value
measured within 24 hours does not exceed 35°C, and the lower limit
is -10°C.
◆ The altitude does not exceed 1000m
◆ Relative humidity: daily average value does not exceed 95%. The
monthly average does not exceed 90%.
◆ Earthquake intensity: no more than 8 degrees.
◆ Water vapor pressure: The daily average value does not exceed
2.2kPa, and the monthly average value does not exceed 1.8kPa.
◆ Ambient environment: a place free from fire, explosion, serious
pollution, chemical corrosion and severe vibration
Technical data
| Items | Unit | Data |
| Voltage | KV | 40.5 |
| Frequency | Hz | 50 |
| Current | A | 1250,1600,2000 |
| Short-circuit Breaking Current | KA | 25,31.5 |
| Making Current (Peak) | KA | 63,80 |
| 4s Thermal Stability Current | KA | 25,31.5 |
| Dynamic Current (Peak) | KA | 63,80 |
| 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
Rating voltage: 40.5kV
Rating current: 630 1250 1600 2000 2500A
Rating short circuit breaking current: 20 25 31.5KA
Mechanical life: no less than 20,000 times
VS1-40.5 Technical data
| Items | Unit | Date |
| voltage |
KV | 40.5 |
| short-time power frequency withstand voltage (1min) | 95 |
| lightning impulse withstand voltage (peak) | 185 |
| frequency | Hz | 50/60 |
| current | A | 1250 1600 2000 2500 4000 |
| short-circuit drop-out current | KA | 25 31.5 |
| short-time withstand current | 25 31.5 |
| short-time continual time | s | 4 |
| peak withstand current | KA | 63 80 |
| short-circuit closing current | 63 80 |
| 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 |
| break times for rated short drop-out current | s | 20 |
| operation voltage | V | AC110/220 DC110/220 |
| current of power storing motor | W | 230 |
| Average opening speed | m/s | 1.6~2.0 |
| Average closing speed | 0.5~0.8 |
| operation procedure | | opening-0.3s-closing opening-180s-closing opening |
Knkong Electric 33KV switchgear has served the international market
for over the past 10 years.
