DS 77



DAYLIFF DS submersible pumps are designed specifically for borehole supply applications. They are of multistage centrifugal impeller design and all parts are made from stainless steel with water lubricated rubber bearings. A submersible motor is fitted beneath the pump and suction is effected through a strainer between the pump and motor.

MOTOR
The pump is coupled to a sealed liquid cooled 2-pole asynchronous squirrel-cage motor constructed from stainless steel. The motor requires a remote starter and if unstable supply voltage is likely, an additional quick tripping control relay is recommended. Note that due to low starting torques of submersible motors, it is recommended that DOL starters are used.

Enclosure Class: IP68
Insulation Class: F
Voltage: 3x415V
Speed: 2900rpm

OPERATING CONDITIONS
Pumped Liquid: Thin, clean chemically non-aggressive liquids without solid particles or fibres.
Max. Liquid Temperature: +30°C
Max. Water Depth: 600m
Min. Borehole Diameter: 200mm - 6" motor, 254mm - 8" motor (DS77/15 only)

PUMP DATA

  Motor Size ('') Motor Full Load Current (A) Istart/I Dimensions (mm) Weight (kg)
kW HP A B C E*
DS 77-3 6 11 15 27.5 3.7 1604 730 874 178 92
DS 77-4 15 20 36.5 4.2 1788 785 1003 113
DS 77-5 18.5 25 43.5 4.5 1991 860 1131 119
DS 77-6 22 30 51.5 5.5 2179 920 1259 138
DS 77-7 26 35 56.5 5.1 2500 1157 1387 181
DS 77-9 30 40 64 5.7 2694 1050 1644 200
DS 77-11 37 50 78.5 3.7 3080 1180 1900 217
DS 77-15 8 55 75 114 5.9 3400 1350 2424 200 269

E* = Maximum diameter of the pump inclusive of cable guard and motor

 

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