Coverco - NWS4 motors (no longer in production)

STANDARD WATER APPLICATIONS
SUBMERSIBLE ELECTRIC MOTORS 4'' SERIES NWS4

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The NWS4 submersible motors are 4” rewindable submersible motors which are suitable for water which max. temperature is 35°C and which pH is between 6.5 and 8.0.

The filling liquid is a non-toxic dielectric fluid, which is approved by the F.D.A. (Food and Drug Administration) as well as by other various institutes of pharmacology world-wide.
The coupling dimensions and flange comply with NEMA 4” standards, as these submersible motors are designed for driving 4” borehole (deep well) submersible pumps that are in accordance with 4” NEMA standards. The power supply is single-phase or three-phase.
The single-phase output power range is from 0.37 kW (0.5 HP) up to 3.7 kW (5 HP), while the three-phase output power range is from 0.37 kW (HP) up to 7.5 kW (10 HP). Usually the submersible motors are installed vertically. However, the motors may be installed horizontally provided technical approval for each specific application.
The 4” submersible motors can be installed in boreholes up to 250 m deep.Rewindability is assured by a design which enables the easy dismantling and assembly of the motors. The NWS4 Series is the successful development of NFS4 Series.

In 2005 the NWS4 Series replaced the NFS4 Series which had been manufactured since 1997.