FLYGT Flygt 3069, Инструкция по установке, эксплуатации и обслуживанию

Страница: 24 / 64

• The cable entry seal sleeve and washers must conform to the outside diameter of the
cable.
• 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 jacket 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.
• The screened cable must be used according to the European CE and EMC
requirements if a Variable Frequency Drive (VFD) is used. For more information,
contact a sales or authorized service representative (VFD-supplier).
• Make sure that the cable is long enough for maintenance work.
• For SUBCAB
®
cables, the twisted pair copper foil must be trimmed.
• All unused conductors must be insulated.
NOTICE:
Do not use external Variable Frequency Drive (VFD) with this unit.
4.2.2 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.
4.2.3 Prepare the SUBCAB
™
cables
This section applies to SUBCAB
™
cables with twisted-pair control conductors.
4 Installation
22 Flygt 3069 Installation, Operation, and Maintenance Manual