Wilo Helix VE 52 Einbau- Und Betriebsanleitung Seite 48

English
- 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 power supply it will be used with.
- The electric protection of the motor is integrat-
ed into the converter. It is set up to take into
account the pump characteristics and ensure
the protection of pump and motor.
- In all cases, install a fused isolator (type gF)
to protect the unit.
NOTICE: If a residual­current device needs to be
installed for the user's protection, it must have
a delay effect. Adjust the circuit breaker rating
according to the current provided on the pump
identification sticker.
NOTICE: This pump is equipped with a frequency
converter and does not require protection from
a residual­current device. Frequency convert-
ers can impair the function of residual-current
devices.
Exception: Residual­current devices that have a
selective universal-current-sensitive design are
permitted.
• Labelling:
• Trigger current: > 30 mA.
- Use only power cables complying with applicable
regulations.
- Protection on mains side: max. admissible 25 A.
Trigger characteristic of the fuses: B.
As soon as the power supply to the converter is
activated, a 2­second display test is carried out
during which all characters on the display are
shown.
48
FI
NOTICE: Requirements and limit values for
harmonic currents.
Pumps with the engine­power classes of 11 kW,
15 kW, 18.5 kW and 22 kW are equipment
for professional usage. These devices are sub-
ject to special connectivity conditions since
a short-circuit ratio Rsce of 33 at the connecting
point is not sufficient for your type of operation.
The connection to the public low-voltage mains
is regulated by the standard IEC 61000­3­12 –
the basis for these pumps' rating is table 4 for
three-phase devices under specified conditions.
For all public connection points, the short­circuit
power Ssc at the interface between the user's
electrical installation and the public power supply
must be greater than or equal to the values in the
table below. It is the responsibility of the installer
or of the user, and if applicable the distribution
system operator too, to ensure that these pumps
are operated properly. If the pump is used within
an industrial middle­voltage system, the connec-
tivity conditions are the sole responsibility of the
operator.
Motor power Short­circuit Ssc power
[kW] [kVA]
11
15
18.5
22
By installing an appropriate harmonic filter
between the pump and the power supply, the
harmonic current content will be reduced.
1800
2400
3000
3500
WILO SE 03/2019