Xylem Aquavar, Instruction Manual

Page: 45 / 172

Figure 48: Input polarity of control terminals
Note: To comply with EMC emission specifications, shielded/armored cables are
recommended. If an unshielded/unarmored cable is used, see
Power and control wiring
for unshielded cables on page 50.
Connect the wires as described in the Instruction Manual for the adjustable frequency
drive. Remember to connect the shields in a proper way to ensure optimum electrical
immunity.
5.3 Power connections
Cabling and fusing
NOTICE:
All cabling must comply with national and local regulations on cable cross-sections and
ambient temperature. UL applications require 167°F (75°C) copper conductors are
thermally acceptable for the adjustable frequency drive to use in non-UL applications.
The power cable connections are situated as shown below. Dimensioning of cable cross-
section must be done in accordance with the current rating and local regulations. See the
specifications section for details.
For protection of the adjustable frequency drive, the recommended fuses must be used
or the unit must be with built-in fuses. Recommended fuses can be seen in the tables of
the fuse section. Always ensure that proper fusing is done according to local regulations.
The AC line input connections are fitted to the line power switch if this is included.
Figure 49: AC line input connections
NOTICE:
To comply with EMC emission specifications, shielded/armored cables are
recommended. If an unshielded/unarmored cable is used, see section Power and Control
Wiring for Unshielded Cables. For more information, see EMC Test Results in the Design
Guide.
5 Electrical Installation
Aquavar ® Intelligent Pump Controller - 150 HP to 600 HP INSTRUCTION MANUAL 43