Electrical Connection - Wilo Stratos PARA/-Z Serie Notice De Montage Et De Mise En Service

7.2

Electrical connection

DANGER! Risk of fatal injury!
Improper electrical connections can lead to fatal electrical shocks.
• Only allow the electrical connection to be made by an electrician approved by the local
power supply company and in accordance with the local regulations in force.
• Before working on the pump, all poles of the power supply must be disconnected.
Work on the pump may only be started after 5 minutes have elapsed due to the dan-
gerous residual contact voltage.
• Check whether all connections (including potential-free contacts) are voltage-free.
• If the control module/cable is damaged, do not operate the pump.
• If setting and operating elements are improperly removed, there is a danger of electric
shock if interior electrical components are touched.
• The pump should neither be connected to an IT network nor to an uninterruptible
power supply
CAUTION! Risk of material damage!
An incorrect electrical connection can cause damage to property.
• If the wrong voltage is applied, the motor can be damaged!
• Control via triacs/semiconductor relay is not permitted!
• When conducting insulation tests with a high voltage generator, the pump must be
completely disconnected from the mains in the system's switchbox.
• The current type and voltage of the mains connection must correspond to the details on
the rating plate.
• The mains cable and the control cable, if present, (Fig. 1a/b, item 6/7) used for the Stratos
PARA/-Z pumps is permanently connected to the control module.
DANGER! Danger of electric shock!
If the cable has been separated from the pump as a result of force, there is a risk of
personal injury by electric shock.
The connection cable is not removable!
CAUTION! Risk of material damage!
Modifications to the connection cable can cause damage to property.
The cable can only be connected at the factory.
Subsequent installation is not possible.
• The electrical connection must be established via a fixed power cable (3 x 1.5 mm
mum cross-section), equipped with a plug and socket connector or an all-pole switch
with a minimum contact opening width of 3 mm.
• The mains connection cable is to be routed into the system's switchbox with a strain relief.
The strain relief and tightness against dripping water/condensation water must be ensured.
The cable is to be provided with a drip loop if necessary.
• The following minimum requirements are to be met if shutdown takes place by means of
an onsite network relay: Rated current ≥ 8 A, rated voltage 250 VAC,
Contact materials: AgSnO2 or Ag/Ni 90/10
• Fuse protection: 10/16 A, slow-blow or automatic fuse with C characteristic.
• A motor protection switch supplied by the customer is not required. Nevertheless, if such
a protection switch is available in the installation, it must be bypassed or set to the highest
possible current.
Installation and operating instructions Wilo-Stratos PARA/-Z
English
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