4
5
Ÿ
The required voltage quality for DAYLIFF DSD motors measured at the motor
terminals is -10%/+10% of the nominal rated voltage during continuous
operation including variations in the supply voltage and cable losses.
Ÿ
All motors must be fitted with a mains isolator and coarse current protection in
the form of an MCB or fuse. Coarse current rating should be approximately 3X
maximum rated motor current.
Ÿ
DSD3/7, 3/13 and 3/18 are supplied with control unit and should be installed
with a Dayliff AVS.
Ÿ
Dayliff SCM/SCT electronic pump controllers are recommended for
comprehensive pump protection of the other models.
Ÿ
Generally recommended unless water availability is assured is low level
protection to prevent the pump running dry. Conventionally this is provided by
a relay connected by cable to sensors in the borehole water, though wireless
electronic protection is also available.
Ÿ
DSD motors can be used with inverters for power by DC sources, particularly
solar modules and also variable speed operation. Further information can be
obtained from the pump supplier if there is a particular installation
requirement.
Fig. 3 Wiring diagram
Black
Blue
Yellow/Green
Black
Blue
Yellow/Green
Brown
M
1~
C
C
PE
A
M
N
L
