VM1,2 – Siemens voltage transformer

Technical data

Type			VM12-1		VM24-1	VM36-1	VM12-2	VM24-2
Highest voltage for equipment	kV		12		24	36	12	24
Power frequency withstand test voltage, 1 minute	kV		28		50	70	28	50
Lightning impulse test voltage (1.2/50 m s full wave)	kV		75		125	170	75	125
Rated frequency	Hz	50/60			50/60	50/60	50/60	50/60
Max. rated primary voltage	kV	12/√3			24/√3	36/√3	12	24
Secondary thermal limit current for measuring winding	A	10			12	14	6	7
Rated voltage factor /8h		1.9			1.9	1.9	–	–
Secondary thermal limit current for Earth – fault winding	A	6			6	6	–	–
Secondary Voltage	V	100/√3; 110/√3; 220/√3					100;110;220
Max number of cores		3			3	3	2	2
Accuracy class measuring / protection				0.2-0.5-1 /3P -6P
Rated output			15-200 VA

Secondary change over provides dual primary rated voltage for instance (20000-11000/100V).