Kyn28-12kv switchgear (export model: kyh12 Series) is designed according to the executive standards IEC 62271-200 and GB 3906 and has passed the type test. It is suitable for industrial and commercial buildings, substations, petroleum industry, chemical industry, metallurgy, mining, shipbuilding and other places.

Product application: suitable for industrial and commercial buildings, distribution systems and other fields

Rated operating voltage (Ue): 12kV

Rated current (In): 1250A

Rated frequency: 50Hz

Rated short-duration power frequency withstand voltage: 42kV in compliance with IEC 62271-200

Rated lightning impulse withstand voltage: 75kV

Rated short-time withstand current: 31.5kA 4s

Rated peak withstand current: 80kA 

Rated short-circuit breaking current: 31.5kA

Rated short-circuit making current: 80kA

Internal arcing classification:

Accesibility (Front, Rear, Lateral): Type A

Test current: 31.5kA

Arc duration: 1 second

Partition Class: PM (metallic partition)

Loss of service continuity category: LSC2B (metal-clad)

Design specification: Designed and tested in compliance with IEC 62271-200 and GB 3906