Wilo Stratos GIGA Série Notice De Montage Et De Mise En Service page 95

Preparation/notes
1
Fig. 28: M25 threaded cable connection
1
2
3
4
Fig. 29: Cable shielding
Installation and operating instructions Wilo-Stratos GIGA, Stratos GIGA-D, Stratos GIGA B
• The electrical connection must be made using a permanently installed
mains connection line (see following table for cross-section) with a
plug-and-socket connection or an all-pole switch with a contact
opening width of at least 3 mm . If flexible cables are used, ferrules
must be used.
• The power cable is to be fed through the M25 threaded cable connec-
tion (Fig. 28, Item 1).
Power P Cable cross-section
N
[kW] [mm
4 1.5 – 4.0
> 4 2.5 – 4.0
NOTE:
See the list "Table 11: Screw tightening torques" on page 115 for the
correct tightening torques for the terminal screws. Use only a cali-
brated torque wrench.
• The following cables must always be shielded, in order to comply with
EMC standards:
• Differential pressure sensor (DDG) (if installed onsite)
• IN2 (setpoint)
• Dual-pump (DP) communication (for cable lengths > 1 m);
("MP" terminal)
Note the polarity:
MA = L => SL = L
MA = H => SL = H
• Ext. off
• AUX
• Communication cable IF-Module
The shield must be applied to both sides: on the EMC cable clips in the
electronic module and on the other end. The lines for SBM and SSM do
not have to be shielded.
The shield is connected to the cable bushing on the electronic mod-
ule. The procedure for connecting the shield is shown schematically in
Fig. 29.
• In order to ensure drip protection and strain relief on the threaded
cable connection, cables are to be used which have a sufficient outer
diameter and are to be screwed sufficiently tightly. Also, the cables
near the threaded cable connection are to be bent to form a drainage
loop, to drain any accumulated drips. Position the threaded cable
connection or lay the cables accordingly to ensure that no drips can
run into the electronic module. Non-assigned threaded cable con-
nections must remain sealed with the plugs provided by the manufac-
turer.
• The connection line is to be installed in such a way that it cannot
under any circumstances come into contact with the pipe and/or the
pump and motor housing.
• When pumps are used in systems with water temperatures above
90 °C, a suitably heat-resistant power cable must be used.
• This pump is equipped with a frequency converter and may not be
protected by a residual-current device. Frequency converters can
impair the function of residual-current-operated protection circuits.
Exception: residual-current devices which have a selective type B
universal-current-sensitive design are allowed.
• Labelling: RCD
• Trigger current: > 30 mA
• Check the current type and voltage of the mains connection.
PE
2 2
] [mm ]
2.5 – 4.0
2.5 – 4.0
English
89