KYN18A – 12 Indoor AC Metal-clad Withdrawout Metal-enclosed Switchgear (hereinafter referred to as the cubicle) is a kind of central-located vacuum circuit breaker switchgear.  Generally we adopt ZN22B – 12 Vacuum Circuit Breaker, also ZN12 – 10 Vacuum Circuit Breaker and 3AF, 3AH Vacuum Circuit Breakers turned out from Siemens.

 

In compliance with GB3906 – 91  “3 – 35kV AC Metal-enclosed Switchgear”, DL 404 – 91 “Technical Conditions for Ordering Indoor AC Switchgear”, IEC 298 “AC Metal-enclosed Switchgear and Controlgear” and others.  It is suitably used in 3 – 10kV AC three-phase 50Hz single busbar electric grids for electric power acceptance and distribution.  It is widely applied in a various of power plants, substations, industrial and mineral enterprises.  It may be installed against wall (not recommended) and not against wall.

 

 

▲         Ambient temperature

For the up limit, refer to Table 1, and the down limit is -10℃.

                                                          Table 1

 

▲         Altitude above sea level

Not over 1000m (not over 3000m for particular ordering)

 

▲         Humidity and pollution

Relative humidity on daily average not greater than 95%, monthly average not greater than 90%.  Condensation is permissible when abrupt drop in temperature occurs during high humidity period.  The switchgear may be operated in Class I condition specified in appendix of GB3906 – 91.

 

▲         Ambient air not obviously polluted by corrosive gaseous and steams.

 

▲         No frequent sever shock.

 

 

 

▲         This product series may be divided into current cubicle (rated current＞2000A) and small current cubicle (rated current＜2000A)

 

▲         For main circuit schemes of the switchgear, refer to Table 11.

 

▲         Formulation of full series.