Installation
12
The following requirements and conditions must be met to connect the
NED electrically:
The electrical connection may only be carried out by authorised, quali-
fied personnel.
All work must be carried out exclusively with insulated tools suitable for
the application.
The permissible operating conditions must be met. Please refer to
chap. Technical data, page 7 for operating conditions.
The supply voltage must correspond to the information on the type
plate.
The permissible deviation of the supply voltage must be observed, see
For the models NED 50100 up to NED 601510:
It is imperative to pay attention to the correct polarity, because the NED
will not start if the polarity is wrong.
A suitable overload protection (1) must be
pre-connected to each vibrator. The motor
protection switches must be interlocked with
each other in pairs, so that in the event of a
motor failure, the power supply from both
motors is interrupted at the same time in or-
der not to cause uncontrolled vibrations
which can damage the system.
All electrical cables must be carefully laid and must be protected from
high temperatures, lubricants and sharp edges. Care must be taken to
ensure that the cables are not chafed through by vibrating parts. The
correct condition of the electrical cables with their plugs must be
checked at regular intervals (usually every six months). Detected er-
rors are to be eliminated immediately.
The wire ends must be fitted with suita-
ble insulated cable lugs, in order to pre-
vent the strands from splaying.
Note that the models NED 50100 up to NED 601510 have a start delay of
approx. 1 second.
Electrical
connection
