Medium Voltage Switchgear (Air Insulated Switchgear for Primary Distribution System)
Introduction
Our medium voltage switchgear comes in full range of specifications. Made by advanced technology, the air insulated switchgear features stable, reliable performance and ease of use. It is mainly used as a monitor and protector by electric power plants, industrial and mining enterprises, primary substation power distribution systems, and large-scale high-voltage motors.
The KYN28A series medium voltage switchgear consists of cabinet and handcart. The cabinet is divided into several functional compartments by metal partitions:
1. busbar room
2. circuit breaker room
3. cable room
4. low-voltage instrument room
Different functions can categorize the handcart into circuit breaker handcart, voltage transformer handcart, metering handcart, isolation handcart,arrester handcart, fuse handcart, etc. Handcarts of the same specification are freely interchangeable with each other.
Technical Parameters| Rated voltage | kV | 7.2 | 12 | 24 | 40.5 |
| Rated frequency | Hz | 50/60 | 50/60 | 50/60 | 50/60 |
| Rated 1min power frequency withstand voltage | kV | 32 | 42 | 65 | 95 |
| Rated lightning impulse withstand voltage | kV | 60 | 75 | 125 | 185 |
| Rated main busbar current | A | 630……4000 | 630……4000 | 630……2500 | 630…..2000 |
| Rated short time withstand current | kA | 16,20,25,31.5,40 | 16,20,25,31.5,40 | 20,25,31.5 | 25,31.5 |
| Rated peak withstand current | kA | 40,50,63,80,100 | 40,50,63,80,100 | 50,63,80 | 63,80 |
| Rated short circuit duration | s | 4 | 4 | 4 | 4 |
| Protection class | IP | IP4X | IP4X | IP4X | IP4 |
| Standards compliance | -- | IEC62271-200, IEC60298,GB3906 | |||
Features
1. The medium voltage switchgear can be equipped with ABB-VD4, Schneider-EV12S or HVX, and Tellhow-TZN1 or TZN2 vacuum circuit breakers.
2. Unique, innovative concave-convex style with blue edge eliminates visual fatigue.
3. The switchgear enclosure uses high quality 2mm thick aluminum-zinc steel plate. Processed by CNC machining, the entire cabinet is excellent in precision and resistance to corrosion and oxidation.
4. Handcart and cabinet coordinate well with safe, reliable, and flexible mechanical interlock mechanism.
5. Mechanical and electrical operations are operated with the cabinet closed.
6. The switch cabinet can be mounted against the wall. Maintenance is allowed to be carried out in front. Space occupation is reduced.
7. The cable room had plenty of space for connection of 6 cables.
8. The operation of the switchgear can be easily observed through the observation window of circuit breaker room.
Multifunctional Modular Design
1. incoming cabinet with vacuum circuit breaker
2. outgoing cabinet with vacuum circuit breaker
3. busbar cabinet with vacuum circuit breaker
4. isolation cabinet with isolation handcart
5. lifting cabinet with and without measurement
6. motor outgoing cabinet with vacuum contactor
7. PT cabinet with PT handcart, PT, and surge arrester
8. capacitor cabinet with fuse handcart, surge arrester
9. the switchgear can be designed for different purposes according to customer requirements
| Dimensions | 7.2kV and 12kV Air Insulated Switchgears for Primary Distribution Systems | ||
| W×D×H mm | 650×1525(1725)×2300 | 800×1525(1725)×2300 | 1000×1525(1725)×2300 |
| incoming cabinet | ■ | ■ | ■ |
| outgoing cabinet | ■ | ■ | |
| busbar cabinet | ■ | ■ | ■ |
| isolation cabinet | | ■ | ■ |
| lifting cabinet | ■ | ■ | ■ |
| motor outgoing cabinet | ■ | ■ | |
| PT cabinet | | ■ | |
| capacitor cabinet | | ■ | |
| Customized cabinet | ■ | ■ | ■ |
| Dimensions | 24kV Air Insulated Switchgear for Primary Distribution System | |
| W×D×H mm | 800×1810(2360)×2380 | 1000×1810(2360)×2380 |
| incoming cabinet | ■ | ■ |
| outgoing cabinet | ■ | ■ |
| busbar cabinet | ■ | ■ |
| isolation cabinet | ■ | ■ |
| lifting cabinet | ■ | ■ |
| motor outgoing cabinet | ■ | ■ |
| PT cabinet | ■ | |
| capacitor cabinet | ■ | |
| Customized cabinet | ■ | ■ |
| Dimensions | 40.5kV Air Insulated Switchgear for Primary Distribution System |
| W×D×H mm | 1400×28000(3000)×2800 |
| incoming cabinet | ■ |
| outgoing cabinet | ■ |
| busbar cabinet | ■ |
| isolation cabinet | ■ |
| lifting cabinet | ■ |
| motor outgoing cabinet | ■ |
| PT cabinet | ■ |
| capacitor cabinet | ■ |
| Customized cabinet | ■ |
Note: we can design medium voltage switchgear according to the primary system drawings provided by the customer.
