Elmo Rietschle G-BH7 Operating instructions - Manual (Page 16)

Installation
610.44436.40.000 16 / 28 © Gardner Denver Deutschland GmbH
5.2 Electrical connection (motor)
 DANGER
Electrical danger!
Improper behavior can result in severe injuries
and material damage!
 DANGER
Electrical danger!
The electrical connection may be carried out by
trained and authorized electricians only!
 DANGER
Electrical danger!
Before beginning work on the unit or system, the
following measures must be carried out:
 Deenergize.
 Secure against being switched on again.
 Determine whether deenergized.
 Ground and short-circuit.
 Cover or block off adjacent energized parts.
CAUTION
Incorrect connection of the motor can lead to
serious damage to the unit!
Regulations:
The electrical connection must be carried out as
follows:
 according to the applicable national and local
laws and regulations,
 according to the applicable system-dependent
prescriptions and requirements,
 according to the applicable regulations of the
utility company.
Electrical power supply:
Observe the rating plate.
It is imperative that the operating conditions
correspond to the data given on the rating plate!
Deviations permissible without reduction in
performance:
 ±5 % voltage deviation
 ±2 % frequency deviation
Connection to drive-motor terminal box:
Open the required cable entry openings on the
terminal box. Here the following two cases are
differentiated:
 The cable entry opening is prefabricated and
provided with a sealing plug.
 Screw out sealing plug.
OR
 The cable entry opening is closed off with a
casting skin (only on pump-motor units with
drive-motor axis heights of 100 to 160 in
standard design).
 Break out casting skin using a suitable tool.
For example, use a metal pin with a
corresponding diameter or a chisel and
hammer.
CAUTION
When pounding out the casting skin on the
cable entry openings in the terminal box, the
terminal box or its parts can be damaged (e.g.
terminal board, cable connections).
Proceed with suitable caution and precision
when doing so!
Prevent flash formation!
Mount cable glands on the terminal box. Proceed
as follows:
 Select one cable gland in each case which is
suitable for the cable diameter.
 Insert this cable gland in the opening of the
terminal box.
Use a reducer if necessary.
 Screw on the cable gland so that no moisture,
dirt etc. can penetrate into the terminal box.
Carry out the connection and the arrangement of
the jumpers in accordance with the circuit
diagram in the terminal box.
Connect the protective conductor to the terminal
with the following symbol:
.
The electrical connection must be carried out as
follows:
 The electrical connection must be
permanently safe.
 There may be no protruding wire ends.
 Clearance between bare live parts and
between bare live parts and ground: ≥ 5.5 mm
(at a nominal voltage of U
N
≤ 690V).