1250A 6.6KV switchgear KYN28 with Chinese VS1-12 series vacuum
breaker circuit
Voltage: 6.6KV
Current: 1250A
General
The KYN28 series switchgear produced by KNKONG-ELECTRIC is equipped
with the main circuit breaker VS1 (ZN63) independently researched
and manufactured by China with a large breaking capacity, and the
VD4 series vacuum circuit breaker produced by ABB can also be used.
The KYN28 series switchgear produced by our company has the
advantages of advanced structure, reasonableness, compactness,
superior performance, safety, and reliability.
The 11KV switchgear is our best-selling international product. The
vacuum circuit breaker VS1 independently developed by China enables
us to compete with European products in the international market.
Service environment
1. Air temperature: -25℃~+40℃
2. Humidity: Monthly average humidity 95%; Daily average humidity
90%.
3. Altitude:≤ 2500m
4. Ambient air not apparently polluted by corrosive and flammable
gas, vapor etc.
5. No frequent violent shake
Technical data
| No. | Item | Unit | Parameter |
| 1 | Rated voltage | kV | 3.6~24 |
| 2 | Rated frequency | Hz | 50/60 |
| 3 | Rated current | A | 630,1250,1600,2000,2500,3150,4000 |
| 4 | Branch busbar Rated current | 630,1250,1600,2000,2500,3150,4000 |
| 5 | Main busbar Rated current | 630,1250,1600,2000,2500,3150,4000 |
| 6 | 1min Power frequency withstand voltage | wet | KV | 38 | 50/60 |
| dry | 48 | 60/65 |
| 7 | Lightning 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(4s) | 20/25/31.5/40 |
| 10 | Protection type | | IP4X for housing |
The customer should offer the following information for the order:
1. Main circuit wiring diagram and special technical requirements;
2. Installation layout drawing of switch cabinet;
3. The internal component specifications of the switch cabinet and
the schematic diagram of the auxiliary circuit and the control
circuit drawing.
4. Written instructions for other special needs.
5. Knkong Electric can manufacture 11KV switchgear according to
customer requirements, please send SLD to us, we can achieve 100%.
