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Rotary Diesel UPS Also see Description of Operation + References


Mains supply failure that lasts as long as a millisecond will have serious consequences, expensive production outage and subsequent mistake costs in a wide range of industrial, airport, computer centres and healthcare applications.

 

Hitzinger’s Rotary Diesel UPS consist of four major systems; these include the kinetic energy storage module, generator, diesel engine and coupling choke. The ride through energy during mains outage or power conditioning for the UPS system is provided via the kinetic energy module, generator and coupling choke. The long-term back up is supplied via the operation of the diesel engine. The Hitzinger Rotary Diesel UPS system offers extremely high availability and reliability in case of mains failure along with high efficiency during stand-by operation because of individual component selection and careful design.

300KVA Rotary Diesel NBDK DRUPS

 

Maximum availability and reliability

 

A Hitzinger Rotary Diesel UPS system uses only components having an optimum quality standard and as a minimum number of system components are used, the Diesel UPS is one of the most reliable available.

 

Coupling Choke

 

Within a Rotary Diesel UPS system, the high quality output supply is connected to the input grid supply via the coupling choke. This system allows large voltage differences between both AC systems by means of reactive currents for any direction, independent of the active power flow.

The Chokes special design provides a high degree of de-coupling in both directions between the input and the output. The Coupling choke provides:

  • Static and transient voltage decoupling of the input mains and the UPS bus.
  • Harmonic filtering
  • Input load levelling irrespective of 100 % unbalanced output load.
  • Input Power factor correction > 0.98 from 0 - 100 % load at nominal voltage.


In the event of input short circuit the current flow towards the grid network is limited by the choke to < 200 % I nominal until the input is disconnected. During this transient, the current feed back to the mains is wholly reactive, ensuring all the kinetic stored energy can be fully utilised for the critical load.
 

Hitzinger Diagnostic and Monitoring System

 

Hitzinger offers comprehensive monitoring and control systems through serial interfaces over an intranet, network or remote connectivity via modem links.

 

Typical Schematic Diagram

 

 

     1 Diesel engine                                        9 Consumer power switch
     3 Electromagnetic clutch                          10 Alternator guards                            
     4 Kinetic module                                      11 By-Pass- Power switch
     6 Synchronous alternator                          12 Grid supply
     7 Choke                                                  13 User output of UPS
     8 Grid power switch                                  15 Voltage peaks
     14 Harmonic distortion                              16 Voltage cut-offs
     17 Interruptions

 

Specification

  • Rating: Up to 2500 kVA Voltage: up to 11 kV direct Dual output units
  • Low maintenance costs
  • Power factor improvement
  • Availability: >99.9999 %
  • Reduced plant room footprint
  • Battery less solution
  • Low MTTR value
  • DRUPS design is Brushless with no slip rings
  • Mean Time Before Failure (MTBF) value: >1M hours
  • High overload capacity
  • Efficiency up to 96 %
  • Electromagnetic clutch
  • Brushless design, no slip rings
  • Maximum availability and reliability

 

If you require further information on any model please Contact Us or Request a Brochure