KSB UPA Installation & Operating Manual page 32

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5 Installation at Site
For any other ways of laying electric cables, e.g. in cable ducts, observe the
information on the maximum current-carrying capacity as per the applicable
directives.
Extension cables connected by the operator
NOTE
For pump sets in VdS-approved sprinkler installations
For pump sets in VdS-approved sprinkler installations, also observe VdS guideline
VdS CEA 4001!
If the supplied extension cables are to be connected at the site, observe the
following:
1. Observe the installation instructions of the cable connector to be used.
2. Make sure the extension cable is selected and dimensioned for a maximum
voltage drop of ≦ 3 %. The extension cable has to be approved for the applicable
operating conditions.
3. In 4-core motor leads the earth conductor is part of the electric cable and must
also be connected in the cable connector when connecting an extension cable.
4. 3-core motor leads do not include an earth conductor. A separate earth
conductor is connected on the outside of the motor. Extend and connect the
earth conductor separately. If no earth conductor is provided, the operator shall
be responsible for earthing the motor externally. (Core cross-section
corresponding to line conductor, min. 4 mm
5. Connect the shield of shielded extension cables to the earth conductor. 3-core
motor leads as described in paragraph 4 must be earthed externally; connect the
shield of the extension cable to the earth conductor.
6. Transfer the core identification of the motor lead to the cores of the extension
cable. Make sure the colour codes match when connecting the cables.
The core codes depend on the wiring type of the motor:
Table 13: Core codes
Motors for DOL starting with 1 electric cable
U V
Motors for star-delta starting with 2 electric cables
U 1 V 1
Motors for DOL starting with 2 parallel electric cables
U1 - 1 V1 - 1
UPA / UPA S
2
)
W -
W 1 U 2
W1 - 1 U1 - 2
- -
V 2 W 2
V1 - 2 W1 - 2