STEP DOWN TRANSFORMER TECHNICAL SPECIFICATIONS
Input Voltage : 415 / 220 Volt AC
Output Voltage : 220 / 110 Volt AC
Frequency : 50 Hz.
Input Connection : Star
Output Connection : Star
Coupling Capacitance : Less than 0.01 pF
C.M.N.R. : 100 db
DC Galvanic Insulation : Over 100Mega Ohms between any winding
Or winding to ground
Type of Cooling : Air Cooled / Oil Cooled
Ambient temperature : -10C – 550C
Transformer Ratio : 1.5
Power Factor : 0.75 Lag to lead
VI Electric strength : 2500 V AC for 120 sec.
Insulation Resistance : More Than 100M Ohms.
Class of Insulation : Class ‘F’
Losses : 3% – 5%
As above mentioned above Step down transformer is basically from 400 Volt to 220 Volt ( Three Phase ) or 220 Volt to 110 Volt ( Single Phase ). But this a custom built item . If customer /application has different requirement we can design from any Input range. s the name ( Step Down Transformer ) suggest the device which downs the voltage from actual voltage to the desired one. In most European countries the supply voltage is 220 Volt, thus the equipment are designed accordingly, But if the same equipment are used in India we have to have Step down Transformer for the same equipment.