UPS

Microprocessor Based Double Conversion Topology

At input stage AC supply is converted to controlled DC and in second stage DC is converted to controlled AC which is used to support the critical loads. Due to double conversion the load is completely protected against spikes, surges and brownouts. Use of microprocessor ensures low component count and reliability of the circuit .

Active Power Factor Correction at UPS Input

At input stage conversion from AC to controlled DC is achieved through high frequency PWM based Converter using IGBTs. This technology offers following benefits to the user

• Input power factor >.95
  
• Very low input current distortion ,input current waveform similar to sinewave .No harmonics will be reflected back to mains ,thus no pollution of the input mains
  
• UPS can operate with almost same capacity generator
  
• Autocorrection for input phase rotation reversal
  
• Reduced size of cabling and switchgear at the input stage
  
• With the option of 12 pulse and input filter, the input current distortion and power factor will further improve
  

High Frequency PWM Based Inverter Using IGBTs Alarm

Conversion from DC to controlled and pollution free AC is achieved through high frequency PWM based Inverter using IGBTs with instantaneous sinewave control. The technology offers following benefits to the users.

• High efficiency
  
• Low noise
  
• Compact size
  
• Faster transient response

Parallel Redundancy

In Atlas & Supernova series upto 8 Nos. of UPS systems can be used in parallel configuration. Paralleling can be done for the purpose of either redundancy or capacity enhancement. These systems can be configured in Hot Stand-by, 100% parallel redundant and N+1 redundant mode .

On Site Upgradability

PTX -3 series UPS systems can be upgraded on site from 10kVA to 30kVA