Electrical Connections - Wilo Extract FIRST Series Installation And Operating Instructions Manual

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5.3 Electrical connections

WARNING! Electrical shock hazard
The electrical connections and the inspections have to be done by a quali-
fi ed electrician and comply with the applicable local standards.
The power supply of the pump must include a circuit having a residual
current difference device (earth fault breaker) acting at no more than
30 mA.
In case of cord damaged, make it replace by a qualifi ed electrician.
• Control the kind of current and the network voltage.
• Observe the specifi cations of the pump nameplate.
WARNING! Do not forget to connect the earth.
NOTE: The single-phase pumps have an integrated overcurrent protection.
• The pump with single-phase motor is cabled and has an integrated thermic
protection.
Do not connect the pump if:
• The connection cable is damaged.
Have the connection cable replaced by a qualifi ed electrician or the customer
service.
• A standalone inverter is in use.
Stand-alone inverters are used in autonomous power supplies, e.g. solar power
supply, and can generate overvoltages. Overvoltages can destroy the pump.
• A multiple plug socket or power strip is in use.
• An energy-saving plug is in use.
This reduces the energy supply to the pump and the pump may heat up too
much.
• Operation on start-up controls.
The pump is not suitable for operation on a frequency converter or a soft start
control.
14 WILO SE 2022-10 DIN A5