KYN61 medium voltage switchgear,
40.5KV, 3-phase, AC 50/60Hz
Complete ISO IEC
Standard For design service please inquire by email.
The switch cabinet is designed according to GB3906-91 and IEC298 standards for armored metal-enclosed switches. The whole is composed of two parts: the cabinet and the withdrawable part (handcart). The cabinet structure is processed by CNC and bolted to form a combination. The inside of the switch cabinet is divided into the circuit breaker room, the main busbar room, the cable room and the relay instrument room with a metal partition. The enclosure protection level reaches IP3X, the protection level of each compartment is IP2X, and all metal structural parts are reliably grounded, and each compartment of the main circuit system has an independent exhaust pressure release channel.
Standards
GB3906-2006 "3~35kV AC Metal-enclosed Switchgear"
GB11022-89 "General Technical Requirements for High Voltage Switchgear"
IEC60298 "AC metal-enclosed switchgear and control equipment with rated voltage above 1kV and below 50kV"
DL404-97 "Technical Conditions for Ordering Indoor AC High Voltage Switchgear"
.
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.
