Manual KVBF
10.4 Electrical connection
DANGER!
Risk of injuries from electric current!
Switch the energy supply off before you bring about the electrical connection of the
fan. Make sure that the energy supply cannot be switched on again prematurely.
The electrical connection may only be carried out by trained electricians.
DANGER! Risk of injuries from electric voltage!
Check whether the electrical data on the name plate match up with the local mains
connection, e.g. of the switch cabinet.
The electrical connection is to be done according to valid directives and only by a qualied tter with
matching safety devices for the protection of the motor (start and overload).
The nominal data on the name plate of the device must match up with the mains voltage and frequency.
Voltage tolerances are admissible with a maximum of +6 % or –10 % according to IEC38.
The measured current may only exceed the nominal current at nominal voltage by a maximum of 5 %.
Fans provided with resistors (PTC) must always be connected to an external motor protection.
The motors cannot be voltage controlled. Speed regulation is only possible via a customary frequency
inverter.
The wiring scheme and the manufacturer‘s declaration from the manufacturer of the motor have been enc-
losed with the documentation.
• Carry out the electrical connection directly on the connection box according to the wiring scheme in
the lid of the connection box and comply with local directives.
• Please nd the electrical data on the name plate or the enclosed data sheet.
It is recommended that all motors are to be provided with a protective motor switch (not included in the
scope of delivery). Nothing may be tted to the fan housing.
14
Smoke and heat exhaust fans