Bespoke Variable Speed Drives and Soft Starters from Ralspeed


Environ Ltd, a major provider of innovative gas cleaning solutions to the landfill, digester and biogas industries, were recently supplied by Ralspeed with a bespoke variable speed drive. After the order was placed, several new requirements came to light which our expert team were easily able to fulfil, allowing Environ to continue its essential work without a hitch.


The variable speed drive purchased by Environ is to be used in conjunction with an 11kW motor which drives the machinery of a cooling tower. Supplied in an IP54 enclosure, the details of which are listed below, the variable speed drive is a 3-phase model and operates at 415v and between 50/60hz. The enclosure features:

  • Sheet steel construction in company colours

  • Cat 0 contacter stop facility

  • Load-break door isolator

  • Emergency stop

  • Push-button Keypad

  • Potentiometer

  • RFI filter

  • Fan & Filter set

  • Remote/Local selector

  • Transformer

  • Secure locking system

An extra circuit added after placement of order to operate a 6kW heater included a DOL contactor, motor starter, MPCB protection and coil-wired, door-mounted fault/running LED indicators.

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Ralspeed are experts in the production and supply of soft starters, DOL motor starters, inverters, variable speed drives and control gear including Star/Delta models. Our products are supplied with a 12 month guarantee and we also offer a full aftercare and maintenance service.

Call Ralspeed today on 01254 582345 or email us at to discuss your bespoke motor starter and variable speed drive requirements with our expert team.

1st December 2014, 4:16
  • Vacon 100 GP 0.75kW-160kW
  • VersiStart Range
  • Torq-Master Soft Starter With Fitted Bypass Contactor 75-110kW
  • Vacon 10 Compact 0.25kW-5.5kW
  • IP54 Soft Starters 22Kw to 90Kw
  • 3 Pole Contactor 11kW - 15kW
  • Variable Speed Drive Panel 185-200kW for Hire
Page updated 11th Jan 2017, 08:12
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