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 |