Online Uninterrupted Power Supply

Online Uninterrupted Power Supply ( UPS ) System

The Power Master Series of On-Line UPS Systems offer clean power and total protection to your costly equipment.

These state-of-the-art Double Conversion type UPS systems employing High Frequency PWM Technique using MOSFET / IGBT as the Main Switching Device for Inverters are technically superior UPS systems giving Pure Sine Wave Output.

Compact and well engineered, the Power Master systems have been tried and tested in virtually all applications, and have been found to be extremely reliable and consistent in delivering optimum performance. These systems, besides being easy to install and operate, are simple to maintain, should the need ever arise.

Some Salient Features

  • Double Conversion On-Line System
  • 2 / 6 / 12 / 24 / 36 Pulse Full Bridge Full Control Rectifier.
  • Lowest Input Startup Current - Soft-Start Circuit Inbuilt.
  • Rectifier Cum Charger With Float-Cum-Boost Facility Inbuilt.
  • Settable Separately Float / Boost Voltage Inbuilt.
  • Battery Charging Current Selectable by Jumper selection.
  • Suitable for ALL TYPE of Batteries. Temperature Compensated Output.
  • Double edge SPWM with high frequency IGBT 1/3 Ph Inverter Inbuilt.
  • Double wound galvanic Isolation Transformer Inbuilt.
  • Real Time Wave Form Controller (RTWC) Using Parallel Processor Inbuilt.
  • Lowest Output THD less than 2%.
  • Excellent dynamic response +3% for step load change.
  • High crest Factor 1:3
  • High Inrush / Peak Current Handling Capacity.
  • Comprehensive Analog & LED annunciation on Front Panel.
  • Easy to Install, Use and Maintain.
  • Superior In Performance To Price Analysis.

These are available from 1KVA to 800KVA in various options.

Rated Output Capacity 0.5 KVA to 200.0 KVA Single Phase.
Input Voltage Range 160 - 270 VAC 2 Wire + Earth.
330 - 470 VAC 3 Wire + Neutral + Earth.
Input Frequency 50Hz+6%, 47 - 53 Hz.
Neutral Current ZeroCurrent for 3 Phase Input System.
Input Cut-Off Automatic for Input Under-Volt, Over-Volt.In case of 3 Ph Input - Phase Fail & Phase Reverse 2 / 6 / 12 / 24 / 36 Pulse Full Bridge Full
Rectifier - Type Controlled
Rectifier with Automatic Float Cum Boost Charger
DC Voltage
Single PhaseI/P 0.5 - 2.0 KVA2.0 - 5.0 KVA6 - 10.0 KVA
48 / 72 / 120 / 180V120 / 144 / 180V180 / 192V
Three Phase I/P  
10.0 - 60.0 KVA75.0 - 200.0 KVA
360 V 540 / 684V
Battery Type S.M.F. / Tubular or any other type for 15 min. to 8.0 hrs. as per requirement
Output Voltage 230 VAC 2 Wire + Earth.
Voltage Regulation Less than+1% For Linear & Non-linear Load.
Output Frequency 50.0 Hz.+0.2 In Free Run Mode.
Output Waveform Sinusoidal ( Sine Wave ).
Distortion THD less than 2% with Any Single harmonic
less than 1%
Inverter Efficiency  
Transient Response Better than 88 - 90%.
Transient Recovery <+3% for 50% to 100% Step Load
Load Power Factor 100%
Overload Capacity Unity to 0.65 Lag within KW Rating.
120% for 10 min, 150% for 10 sec, 160% Trip
Crest Factor After 3 Cycles.
Control Method > 1:3
Double edgeSPWMwith high frequencyIGBT
Inverter & Real 
Annunciation Time Waveform Controller (RTWC)
Using VLSI Parallel Processor
Output Isolation All Audio, Visual Indications / annunciations
provided on Front Panel
Ambient In-builtGalvanic IsolationTransformer at
Temperature Output stage.
Relative Humidity 0 - 40 Degrees Celsius
95% RH Max. ( Non Condensing )
Audible Noise 45 - 55 dB at 1.5 meters
Cooling Forced Air Type

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