4 Assemblage
4.3
4.5 Electrical
connection
The fan may only be connected up to the
electrical system by a qualified electrician.
The drive motors are usually installed in the
manufacturing works. The works warranty
does not apply if the customer installs the
motors.
[
→
Chap. Electrical safety ]
The operating instructions of the motor
manufacturers must be observed.
The motor is connected in accordance with the
circuit diagram inside the terminal box (1). The
customer has to check that his power network and
the switchgear and monitoring devices are
sufficiently dimensioned to cope with the transient
behaviour and current peaks. It must be ensured
that the supply of cooling air to the electric motor is
not hindered.
— The power supply cable for the fan must be
installed in accordance with VDE regulations
or any locally applicable legal stipulations.
— Compare the local mains voltage with the
voltage indicated on the rating plate (2) of
the fan.
— Connect the fan as shown on the circuit
diagram inside the terminal box (1).
— Earth the fan in accordance with the
regulations issued by the local power supply
company.
— Check the speed and sense of rotation.
— Check the transient behaviour and starting
time.
—
Provide for a motor protection system.
