VARIABLE FREQUENCY DRIVE FIRE PUMP CONTROLLER

Features

• Fixed stable controlled pressure from no flow till full flow, therefore reduce or eliminating the need for PRVs, and drain risers.
• Eliminate the need for NFPA 25 quarterly testing for PRVs, and so more reliable system.
• Significant Power Saving since the motor is not running at full speed.
• When used with soft starter the soft start and soft stop will considerably reduce the mechanical stress over couplings, shafts etc.
• Eliminate water hammer phenomena.
• Reduce the size of power supply (Genset or Transformer).
• Maintenance costs can be lowered, since lower operating speeds result in the reduction of pump wear, particularly on bearings and seals & longer life for motors.
• Ramp-time can be adjusted for controlled ramp-up speed and this can eliminate the problems of water hammer and excess power draw on start-up, and reduce or avoid flow or pressure surges