Xylem Flygt 2008 Ready 8 Installation, Operation And Maintenance Manual page 16

4 Installation
according to the data plate and if applicable the cable chart. The starting current in
direct-on-line start can be up to six times higher than the rated current.
• The fuse rating and the cables must be in accordance with the local rules and
regulations.
• If intermittent operation is prescribed, then the pump must be provided with
monitoring equipment supporting such operation.
• The thermal contacts/thermistors must be in use.
Cables
These are the requirements to follow when you install cables:
• The cables must be in good condition, not have any sharp bends, and not be pinched.
• The cables must not be damaged and must not have indentations or be embossed
(with markings, etc.) at the cable entry.
• The minimum bending radius must not be below the accepted value.
• If using a cable which has been used before, a short piece must be peeled off when
refitting it so that the cable entry seal sleeve does not close around the cable at the
same point again. If the outer sheath of the cable is damaged, then replace the cable.
Contact a sales or authorized service representative.
• The voltage drop in long cables must be taken into account. The drive unit's rated
voltage is the voltage measured at the cable connection point in the pump.
• For SUBCAB
• All unused conductors must be insulated.
Grounding (earthing)
Grounding (earthing) must be done in compliance with all local codes and regulations.
DANGER: Electrical Hazard
All electrical equipment must be grounded (earthed). Test the ground (earth) lead to
verify that it is connected correctly and that the path to ground is continuous.
WARNING: Electrical Hazard
If the power cable is jerked loose, then the ground (earth) conductor must be the last
conductor to come loose from its terminal. Make sure that the ground (earth) conductor is
longer than the phase conductors at both ends of the cable.
WARNING: Electrical Hazard
Risk of electrical shock or burn. You must connect an additional ground- (earth-) fault
protection device to the grounded (earthed) connectors if persons are likely to come into
contact with liquids that are also in contact with the pump or pumped liquid.
Ground (earth) conductor length
The ground (earth) conductor must be 180 mm (7.1 in) longer than the phase conductors
in the junction box of the unit.
Check the ground (earth) continuity
NOTICE:
The two earth (ground) conductors in the pump are connected via the same conductor to
ground (earth)
Check the ground (earth) continuity.
Measure between the ground (earth) conductor in the motor cable and one of the
screws securing the strainer.
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cables, the twisted pair copper foil must be trimmed.
2008 Ready 8, 8S Installation, Operation, and Maintenance