PARAMETER 3 PHASE UNBALANCED AIR COOLED 3 PHASE UNBALANCED OIL COOLED
Rating (kVA) 3 - 300 3 3000
Type of Cooling Air Oil
Input Voltage Range (V L-L)* 310 - 480 / 340 - 480 / 360 - 460 / 360 - 480
Output Voltage (V L-L)* 415 (380V/400V - optional)
Output Voltage Regulation 1% of nominal output voltage
Input Frequency Range 47Hz -53Hz
Efficiency >97%
Effect of Load Power Factor Nil
Waveform Distortion Nil
Type of Servo Control Micro Controller based True RMS sensing and correction
Servo Motor Drive Triac based drive for AC Step Synchronous motor
Under/ Over Voltage Cutoff Electronic cutoff circuit with graded time delay, set @ +5% /-10% of nominal output voltage
Overload Cutoff CT based Electronic cutoff circuit with graded time delay set @ 110% of rated full load current
Short Circuit Protection MCB / MCCB provided upto 100 kVA. Above 100 kVA MCCB optional
Single Phasing Prevention Provided
Phase Reversal Trip Provided
Stabiliser Bypass Provided up to 50 kVA 3-phase; Optional > 50 kVA
Transient Suppression Spike Suppression through MOV is provided (Surge Arrestor is optional)
Emergency Off Switch Provided
Frequency Cutoff Protection Optional
Input High Voltage Trip Optional
Event Log Optional - Up to 100 events with Date & Time stamp
Resetting Mode Manual / Auto option provided with programmable time delay
Display Type 2 Line LCD Panel
Parameters Displayed Input & Output Voltages (Line & Fault Phase), Output Currents & Frequency Annunciation
LED Indications Input Status - 3-Colour LED - Green - Normal; Output Status - 2 -Colour LED - Yellow - Out of Range; Red - Unsafe (Trip) Green - Output On; Red - Output Trip
Input / Output Terminations Bolted Terminals up to 100kVA,Busban 125kVA and above