Product Description
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INDOOR MEDIUM VOLTAGE SWITCHGEAR
The KYN 28-12 AC metal-clad indoor withdrawable switchgear (3.6-12 kV, 3-phase, AC, 50/60Hz) produced by our company is a power transmission and distribution device for accepting and distributing electric power in the sectionalized single-bus system, which is mainly used for accepting electric power of small and medium-sized generators, power distribution of industrial and mining enterprises, accepting and transmitting electric power for secondary substations, starting of large-sized HV motors and used in power plants, its functions are for control, protection and monitoring.
Product Features
| Product Features |
| VD4 vacuum circuit breaker from ABB or a domestic VS1 vacuum circuit breaker may be chosen. |
| The cubicle with high precision is assembled with imported steel plates coated with zinc & aluminum, which will not rust. |
| Metal-clad completely, each function unit thoroughly separated. |
| Even if the cubicle door is closed, the built-in withdrawable unit driven by a screw can be moved. |
| A simple and effective fail-safe interlock will prevent erroneous operation. |
| Effective protection measures will ensure safety and prevent foreign materials and pests from entering. |
| The cable terminal compartment is large enough to connect lots of cables. |
| Both operation and monitoring are easy.OFast grounding switches for earthing and short-circuit. |
| Through the plateau type, seismic, internal combustion arc test, meet the demand of a broader market. |
Product Parameters
| Project | Unit | Data |
| Rated voltage | kV | 3.6,7.2,12 |
| Rated frequency | Hz | 50/60 |
| Circuit breaker rated current | A | 630, 1250, 1600, 2000, 2500, 3150, 4000 |
| Rated current of switchgear | A | 630, 1250, 1600, 2000, 2500, 3150, 4000 |
| Rated short-time withstand current (4s) | kA | 16,20,25,31.5,40,50 |
| Rated peak withstand current (peak value) | kA | 40,50,63,80,100,125 |
| Rated short-circuit breaking current | kA | 16,20,25,31.5,40,50 |
| Rated short-circuit current (peak value) | kA | 40,50,63,80,100,125 |
| Rated insulation level | 1min power frequency withstand voltage | interpolar, Between poles | kV | 24,32,42 |
| between open contacts | kV | 24,32,48 |
| Lightning impulse withstand voltage (peak value) | interpolar, Between poles | kV | 40,60,75 |
| between open contacts | kV | 46,70,85 |
| Note: 1. Short-circuit capacity of CT should be considered separately. |
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