OLTC Type	CM		CM Multiple Coarse & Fine Regulation
Phase	3 or 2	1	3	1
Max. rated through current Lum up to (A)	600	1500	600	1500
Short circuit current test (kA) Thermal (3S) Dynamic (Peak)	8 20	24 60	8 20	24 60
Max. rated step voltage Uim (V)	3300	3300	3300	3300
Rated step capacity Pstn(kVA)	1500	3500	1500	3500
The highest voltage for equipment Um up to (kV)	252	252	252	252
Max. operation positions Without change-over selector with change-over selector	18 35	18 35	107 with multiple coarse selector