19 Electrical connection
The electrical connection picture can be seen on the motor console.
NOTE
› The motors contain triple posistors. More than two posistor chains may not be switched in series, as this can lead
to undened cut-outs.
› Maximum check voltage of the posistors, 2.5 V.
WARNING
Hazard from electrical voltage
› Electrical connection only by trained electricians or trained and instructed qualied personnel.
› Electrical connection in harmony with the valid directives.
› Avoid penetration of water into the terminal box.
› Pay attention to the 5 rules of electrical engineering:
– clear (all-pole separation of an electrical system from live parts)
– secure against switching on again
– establish freedom from voltage
– earth and short-circuit
– cover or fence off neighbouring live parts.
" Connect the electrical connection according to the circuit diagram on the motor console.
CARE
Property damage as a result of overheating of the motor
» The motor can overheat and be destroyed if the thermo-contacts have not been connected.
» Always connect thermo-contacts to a protective motor switching device!
" Connect the thermo-contacts/posistor connections to a protective motor switching device.
" For plastic terminal boxes, do not use any gland bolt connections of metal.
" Lay the mains feed line from the outside through a bore.
" Seal the bore in order to guarantee the IP 54 protection class.
" Seal the bore against water penetration. Depending on the kind of cable duct, provide water drainage bores or use a sealing putty.
" Additionally seal the lid screw connections of plastic terminal boxes with sealing putty.
19.1 Secure 3-phase motors
" Avoiding two-phase running:
In 3-phase motors, use an all-pole C safety cut-out (current consumption, see name plate).
19.2 Connect temperature monitor
" If a temperature monitor is used, it must be connected to a triggering device and/or a motor-protection device.
44
Electrical connection
Multibox MUB - V 1.0
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