Xylem Flygt 3201, Installation Operation & Maintenance, Page: 24 / 48

• The voltage drop in long cables must be taken into account. The drive unit’s rated
voltage is the voltage measured at the terminal board in the upper part of the pump.
• The screened cable must be used according to the European CE requirements if a
Variable Frequency Drive (VFD) is used. For more information, contact your Xylem
representative (VFD-supplier).
Earthing (Grounding)
Electrical Hazard:
• You must earth (ground) all electrical equipment. This applies to the pump equipment,
the driver, and any monitoring equipment. Test the earth (ground) lead to verify that it is
connected correctly.
• If the motor cable is jerked loose by mistake, the earth (ground) conductor should be the
last conductor to come loose from its terminal. Make sure that the earth (ground)
conductor is longer than the phase conductors. This applies to both ends of the motor
cable.
• Risk of electrical shock or burn. You must connect an additional earth- (ground-) fault
protection device to the earthed (grounded) connectors if persons are likely to come
into physical contact with the pump or pumped liquids.
Connect the motor cable to the pump
CAUTION:
Leakage into the electrical parts can cause damaged equipment or a blown fuse. Keep the
end of the motor cable above the liquid level.
1
2
1. Entrance cover
2. O-ring
For more information about the cable entry, see the Parts list.
1. Remove the entrance cover and the O-ring from the stator housing.
This provides access to the terminal board.
2. Check the data plate to see which connections are required for the power supply:
• Y
• D
• Y serial
• Y parallel
• Y/D
Installation
22 Flygt 3201 Installation, Operation, and Maintenance Manual