e²ALPHA MV Switchgears

	e²ALPHA®	e²ALPHA®-2S	e²ALPHA®-G
Switchgear rated voltage	12kV	17,5kV	24kV	12kV	17,5kV	12kV
Lighting impulse test voltage (1.2/50 μs)piorunowe (1,2/50μs)	75kV	95kV	125kV	75kV	95kV	75kV
Power frequency test voltage  (1 min)	28kV	38kV	50kV	28kV	38kV	28kV
Rated frequency	50Hz	50Hz	50Hz	50Hz	50Hz	50Hz
Rated current of busbar, incoming and coupling bays	630-4000A	630-3150A	630-2000A	630-2500A	630-2000A	do 1250 A
Rated current of outgoing bays	630-4000A	630-3150A	630-2000A	630-2500A	630-2000A	do 1250 A
Rated short-time withstand current (3 s)(1s)3)	do 31,5kA	do 31,5kA	do 25kA	do 31,5kA	do 31,5kA	do 25kA
Internal arc resistance (1s)(0,1s)3)	do 31,5kA	do 31,5kA	do 25kA	do 31,5kA	do 31,5kA	do 25kA
Rated peak withstand current	do 80kA	do 80kA	do 63kA	do 80kA	do 80kA	do 63kA
Switchgear protection rating	IP 4X / IP 54	IP 4X / IP 54	IP 4X	IP 4X / IP 54	IP 4X / IP 54	IP 4X / IP 54
Accessibility of compartments	LSC2B	LSC2B	LSC2B	LSC2B	LSC2B	LSC2B
Classification of enclosures	PM	PM	PM	PM	PM	PM
Internal arc resistance class	AFLR	AFLR	AFLR	AFLR	AFLR	AFLR
Bay width	400-800 mm	400-800 mm	750-950 mm	650-1100 mm	650-1100 mm	600 mm
Bay height	2100 1) / 2200 2) mm	2100 1) / 2100 2) / 2300 4) mm	2300 mm	2680 mm	2680 mm	1800 mm
Bay depth	1250 1) /  1350 2) mm	1250 1) /   1350 2) / 1400 4) mm	1440 mm	1750 mm	1750 mm	1480 mm
Maximum height of work	1000 m	1000 m	1000 m	1000 m	1000 m	1000 m
Maximum relative humidity             at 25 ° C	100%	100%	100%	100%	100%	100%

1. - busbar current up to 1250 A (12 - 17,5 kV)
2. - busbar current up to 2000 A (12 - 17,5 kV), do 2500 A (12 kV)
3. - duration of faults for the Switchgear e2ALPHA-G
4. - rated busbar current up to 3150 A (17,5 kV)

•/o - standard/option