Wilo Helix VE 22 Series, Installation And Operating Instructions Manual

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NOTE: Requirements and limits for harmonic cur-
rents.
Pumps with the engine-power classes of 11 kW,
15 kW, 18.5 kW and 22 kW are equipment for
professional usage. These pumps are subject to
special connectivity conditions since a short-cir-
cuit ratio Rsce of 33 at the connecting point is not
sufficient. The connection to the public low-vol-
tage systems is regulated by the standard IEC
61000-3-12 – the basis for these pumps’ rating
is table 4 for (balanced) three-phase pumps under
specified conditions. For all public connection
points, the short-circuit power Ssc at the inter-
face between the user’s electrical installation and
the public power system must be greater than or
equal to the values in the table below. It is the
responsibility of the installer or of the user of
the pumps to ensure that the pump is operated
properly, consultation the distribution network
operator if necessary. If the pump is used within
an industrial middle-voltage system, the connec-
tivity conditions are the sole responsibility of the
operator.
By installing an appropriate harmonic filter bet-
ween the pump and the power supply, the har-
monic current content will be reduced, if needed.
- The electric characteristics (frequency, voltage,
nominal current) of the frequency converter
are specified on the pump identification label.
Ensure that the frequency converter complies
with the mains supply.
- The electric protection of the motor is integrated
into the converter. The parameters must comply
with the pump characteristics and must ensure
the protection of pump and motor.
- In case of impedance between earth and neutral
point, install a protection device upstream of the
frequency converter.
- Provide a fused isolation switch (type gF) to pro-
tect the mains installation.
NOTE: If a residual current device (RCD) is installed
for user protection, it must have a delay effect.
Adjust it according to the current mentioned on
the pump identification label.
NOTE: 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 circuits.
Exception: Residual current devices (RCDs) with
selective and universal-current sensitivity may
be used.
• Labelling: RCD
• Trigger current: > 30 mA.
- Use only power cables complying with applicable
regulations.
- Max. permissible mains side fuse protection:
25 A.
Trigger characteristic of the fuses: B.
As soon as the power supply to the electronic mod-
ule is established, a 2-second display test is carried
out during which all characters on the display are
shown.
46
English
Motor power [kW] Short circuit power SSC [kVA]
11 1800
15 2400
18,5 3000
22 3500
WILO SE 01/2016