The Special Purpose - SP Series is specifically designed, keeping in mind the expectations of end user for simulation of battery characterestics through provision of Droop setting facility. The series has been evolved for the purpose of testing of battery operated equipment, as well as Motors. Certain equipment/motors draw very high current during startup, thereby dropping the terminal voltage of the battery, due to its internal resistance. The series can deliver very high inrush current without tripping, due to Re-entrant type characterestics. As the inrush current starts falling, the output voltage starts building up and reaches the set level.

Technical Specifications
INPUT
Voltage	415V AC ±10% (upto ±30% on request), 50Hz ±6%, 3Ø, 4 wire or 3Ø, 3 wire. Optional 230V AC ±10%, 1Ø, 2 wire-upto power level of 5KW.
OUTPUT
Voltage	4 to 16V DC or 6 to 32V DC (any one voltage range).
Line / Load Regulation	±1% of rated O/P Voltage.
Ripple	1% rms of rated O/P Voltage.
Current	50A to 2000A Max. (any one rating).
Droop Facility	Source resistance can be varied from 2Mohms to 20 ohms.
Power	150KW Max.
Cabinet Encl. Protection	IP-20, Optional (IP-21, IP-30, IP-31 or IP-40).
Cooling	Forced Air Cooling.
Cabinet Color	D.A. Grey.
Metering	Analogue Meters for Output Voltage / Output Current. Optional Input Voltage / Input Current. Optional Digital Meters.
Protections	Input Over/Under Voltage, Phase Fail/Reversal (for 3 phase input), Output DC Overload/Shortcircuit, Output DC Over voltage, Overheat, Soft-Start Feature, High Speed Fuses for Semi-Conductor Devices and Snubber Circuits for power Semi-Conductor Devices.
Indications	Mains ON, DC ON, Phase Fail (for 3 phase input), Mains Over/Under Voltage, DC Over/Under Voltage, DC Overload and Overheat.
Application	Widely used in the testing of Battery operated equipment / Motors.