General
KYN28 indoor metal-clad withdrawable switchgear(hereinafter short as switchgear)is a complete power distribution device for 3.6~24kV, 3-phase AC 50Hz, single-bus and single-bus sectionalized system. It is mainly used for power transmission of middle/small generators in power plants; Power receiving, transmission for substations in power distribution and power system of factories, mines and enterprises, and starting of large high-voltage motor, etc., so as to control, protect and monitor the system. The switchgear meets IEC298, GB3906-91. In addition to be used with domestic VS1 vacuum circuit breaker, it can also be used with VD4 from ABB, 3AH5 from Siemens domestic ZN65A, and VB2 from GE, etc., it is truly a power distribution device with good performance. In order to meet the requirement for wall mounting and front-end maintenance, the switchgear is equipped with a special current transformer, so that the operator can maintain and inspect it in front of the cubicle
Service Condition
A. Ambient temperature: Maximum temperature: +40ºC Minimum temperature: -15ºC
B. Ambient humidity: Daily average RH no more than 95%; Monthly average RH no more than 90%
C. Altitude no higher than 2500m;
D. The air around without any pollution of duty, smoke, ercode or flammable air, steam or salty fog;
Technical Datas
| No | Item | Unit | Parameter | ||
| 1 | Rated voltage | KV | 3.6KV, 7.2KV, 12KV, 24KV | ||
| 2 | Rated frequency | Hz | 50/60 | ||
| 3 | Rated current | A | 630; 1250; 1600; 2000; 2500; 3150; 4000 | ||
| 4 | Branch busbar Rated current | A | 630; 1250; 1600; 2000; 2500; 3150; 4000 | ||
| 5 | Main busbar Rated current | A | 630; 1250; 1600; 2000; 2500; 3150; 4000 | ||
| 6 | 1 min Power frequency withstand coltage | Wet | KV | 28 | 50/60 |
| Dry | KV | 34 | 60/65 | ||
| 7 | Lighting impulse withstand voltage | KV | 75 | 95/125 | |
| 8 | Rated short circuit breaking current(peak) | KA | 40/50/63/80/100 | ||
| 9 | Short time withstand current | KA | 20/25/31.5/40 | ||
| 10 | Protection type | IP4X for housing | |||
Mainly Structure
1) compartment busbar compartment; circuit breaker compartment; cable compartment; low-voltage compartment.
1 - main device: circuit breaker, contactor,
2 - current transformers,
3 - earthing switch,
4 - voltage transformers,
5 - support-bushing insulators,
6 - bushing insulators
7 - surge arresters,
8 - support insulators (reactance),
9 - main busbars.
10 - connecting (distribution) busbars,
11 - earth-fault current transformer,
12 - earthing conductor,
13 - metal movable particions,
14 - cable ducts (optionally),
15 - vent flaps.
Control Setting Wiring CHNT Accessories 
Withdrawable Vacuum Circuit Breaker Voltage Transformer 
Finished Product
Packing & Shipping
