a) Constant Speed systems – Meant for small sized Commercial and residential projects
b) Variable Speed Constant pressure systems – Medium Sized Commercial and residential projects
These systems are further classified into :
Single VFD for Multiple pumps
Dedicated VFD for each pump (Multiple pumps)
SYSTEM COMPONENTS
a) Pumps : Long & Short Coupled,
Single & Multistage,
Horizontal or Vertical,
Submersible or Centrifugal surface,
1450 or 2900 rpm
Furthermore PEW offers following pumps for driving the system. Selection is based on the financial implications, space available, location of the system in the premises and the total no. of outlets in the system.
Vertical Inline multistage centrifugal pumps
Horizontal/ Vertical multistage centrifugal pumps
Centrifugal Monoblock pumps
Submersible Open well pumps (single stage)
Submersible multistage bore well pumps
Back pull out end suction Coupled pumpsets
b) Motors : EFF 2, EFF 1, Invertor Duty.
c) Control Panel : Wall, Floor Mounted. It comes with the following features :-
Fully automatic with level sensors for both underground and overhead tanks.
Single phasing preventor.
Overload protection.
Dry run/ under current protection.
Electronic display of Voltage, Amperes, wattage and frequency.
d) Other Collaterals: Skid, Suction and Discharge header, Non-Return Valves, Isolating Valves, Pressure switches, Pressure tanks, Float Switches, Pressure transducers & Solenoid Valves and miscellaneous plumbing materials.
