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  • KYN28A-12 Indoor Removable AC Metal-clad and Metal-enclosed Switchgear
Medium Voltage Switchgear

KYN28A-12 Indoor Removable AC Metal-clad and Metal-enclosed Switchgear

As the power transmission and distribution control device, KYN28A-12 indoor removable AC metal-cl...

  • Product Introduction
  • Product Features
  • Technical Parameters

Product Introduction

As the power transmission and distribution control device, KYN28A-12 indoor removable AC metal-clad and metal-enclosed switchgear is suitable for 12kV three-phase AC 50Hz power grid at an altitude of no more than 1000m. 

Product Features

1. The body structure is spliced with AI-Zn-plated steel sheet, which underwent repeated edge forces.

2. All equipment can be operated when the cabinet door is closed.

3. The cabinet housing is fully sealed to prevent sundries and pests and its protection degree is IP4X. Besides, the protection degree of handcart compartment, busbar compartment, cable compartment and relay instrument compartment is IP2X.

4. Simple and effective locking can prevent misoperation. The perfect "five-anti" interlocking device provides reliable safety protection for equipment operators.

5. The circuit breaker can be replaced in a quite simple manner with interchangeable handcarts. VSV and imported VD4 vacuum circuit breaker are provided.

6. The vacuum circuit breaker and its operating mechanism in the high-pressure compartment need only a little maintenance.

7. The cabinet can be installed against the wall to save space.

8. The secondary line is fastened in the wiring duct of large size, which is easy to connect.

9. The mid-set structure provides large space for the cable compartment connected to multi-cables.

10. The installation of cable compartment can be easily observed through the panel inspection window.

11. The cable compartment and secondary instrument compartment are independently fitted with grounding busbar with good contact with the cabinets.

12. The product conforms to IEC 298, GB 3906-2006 and other standards. 


Technical Parameters

No. Item Unit Parameter
1 Rated Voltage kV 3.6、7.2、12
2 Rated Current A 630、1250、1600、2000、2500、3150、4000、5000
3 Rated Power-frequency Short-time Withstand Voltage Phase to Phase, Phase to Earth kV 42
Isolating Distance kV 48
4 Rated Lightning Impulse Withstand Voltage Phase to Phase, Phase to Earth kV 75
Isolating Distance kV 85
5 Rated Dynamic Current(Peak) kA 40、50、63、80、100、125、130
6 Rated Short-time Withstand Current(4s,Virtual Value) kA 16、20、25、31.5、40、50
7 Rated Frequency Hz 50
8 Breaking Times of Rated Short Circuit Breaking Current Times 30
9 Rated Thermal Time s 4
10 Mechanical Life Times 30000
11 Overall Dimension(Width×Height×Depth) mm 800(1000)×2320×1500(1600/1700/2000)