Air insulated switchgear, Metal-cald switchgear

Standard:

Rated voltage	kV	7.2	11	17.5	22	33
Rated insulation voltage	kV	7.2	12	17.5	24	24
Rated power frequency withstand voltage	kV 1min	20	28	38	50	70
Rated lightning impulse withstand voltage	kV	60	75	95	125	170
Rated frequency	Hz	50/60	50/60	50/60	50/60	50/60
Rated short time withstand current	kA 3 s	…50	…50	…50	…31.5	…31.5
Peak current	kA	…125	…125	…125	…80	…80
Internal arc withstand current	kA 1 s	…50	…50	…50	…31.5	…31.5
Main busbar rated current	A	…4,000	…4,000	…4,000	…3,150	…3,150
Circuit-breaker rated current	A	630	630	630	630	630
		1,250	1,250	1,250	1,250	1,250
		1,600	1,600	1,600	1,600	1,600
		2,000	2,000	2,000	2,000	2,000
		2,500	2,500	2,500	2,300	2,300
		3,150	3,150	3,150	2,500	2,500

CA-KYN28-12 Series