High/Low Voltage Complete Plant

Indoor Metal Armored Withdrawable Switchgear

KYN 28-12 type indoor metal armored withdrawable switchgear is a complete set of power distribution device for indoor 3.6-12kv three-phase current 50hz single busbar and single busbar segment system. It is mainly used for power transmission of power plants and small and medium-sized generators, power distribution of industrial and mining enterprises, power reception and power transmission of secondary substations of power systems, large-scale high-voltage motors, etc. It is used for control, protection and detection.

KYN28-12 type indoor metal armored withdrawable switchgear is made up of aluminum-zinc plate bending and combined, fully enclosed structure. In the cabinet, thin steel plates are used to separate four chambers, which are connected by bolts. The upper part is the busbar chamber, the middle part is the handcart chamber, and the lower part is the cable chamber. Instruments and relays are installed in the instrument room in front of the upper part of the cabinet. It has the functions of overhead incoming and outgoing lines and left and right connections.

This product complies with GB3906-2006 3-35KV AC metal-enclosed switchgear, GB/T11022 Common technical requirements for high-voltage switchgear and control equipment standards, IEC298 AC metal-enclosed switchgear control equipment and other standards.

Technical parameters

Rated Voltage	3/6/10KV	Maximum Working Voltage	3.6/7.2/12KV
Rated Insulation Level Imin Power Frequency Withstand Voltage		42V
Lighting Impulse Withstand Voltage	75KV	Rated Frequency	50HZ
Rated Current of Main Busbar	630/1250/1600/2000/2500/3150A	Rated current of branch busbar	630/1250/1600/2000/2500/3150A
4S thermal stable current	16/20/25/31.5/40/50KA	Rated peak withstand current	40/50/60/80/100/125KA
Protection class	The enclosure is IP4X, and the isolation room and circuit breaker room door is IP2X when opened
Ambient temperature	+40℃--15℃	Earthquake magnitude should not exceed 8
Maximum installation altitude	2000m (switchgear for high-altitude use should be adopted when sea altitude is 2000m)
Relative humidity	≤95% (month average relative humidity should not exceed 90%)
No corrosive or combustible gas, no vaper, no obvious pollutants
No serious pollution, no frequent severe shock. The severity design should identify with level 1 requirement in critical conditions.
Users should consult the manufacture when the switchgear is used in conditions not included in the GB3906 regulation.