Elmo Rietschle L-BV5 Operating instructions - Manual (Page 18)

Installation
610.44440.40.000 18 / 32 © Gardner Denver Deutschland GmbH
5.3 Connecting the electric motor
 DANGER
Electrical hazard!
Incorrect actions can lead to severe harm to
persons and material damage!
 DANGER
Electrical hazard!
Electrical connection may only be carried out by
specialist electricians!
 DANGER
Electrical hazard!
Before starting work on the unit or system, the
following precautions are to be taken:
 de-energize it.
 protect it from being switched on again.
 make sure that it is de-energized.
 earth it and bypass it.
 cover or block off adjoining parts which are
still live.
CAUTION
Incorrect connection of the motor can result in
severe damage to the unit!
Regulations:
The electrical connection is to be set up as fol-
lows:
 in accordance with the currently valid national,
local and system-specific regulations and re-
quirements,
 in accordance with the current regulations of
the power supply company which apply to the
place of erection.
Supply of electrical power:
The conditions at the place of use must agree
with the details on the data plate.
Permissible deviations which do not lead to loss
of performance:
 ±5% variation in voltage
 ±2% deviation in frequency
5.3.1 Connection to the motor terminal box
 WARNING
Electrical hazard!
The air-gaps between non-insulated, energized
components in relation to each other and to
earth must be at least 5.5 mm [0.217"] (at a de-
sign voltage of U
N
≤ 690V).
No exposed wires are permissible.
The electrical connections must be permanently
secured.
 WARNING
Electrical hazard!
Terminal boxes must be free of
 foreign objects,
 dirt and
 moisture.
Close and seal the cover to the terminal box and
also seal the cable entry openings against the
entry of dust and water.
Check regularly to make sure they are sealed
tight.
 Any scale / blind plugs are to be properly re-
moved (Fig. 11, page 19).
 Fit the entry union (item A , Fig. 12, page 19)
 Screw in the reducer for the PTC resistor
connection (item B, Fig. 12, page 19).
 Connect the protective conductor to the termi-
nal.
 connect up the connection frame in accor-
dance with the wiring diagram inside the
terminal box (item 1, page 3).
- For tightening torques for terminal boards
see the table "Tightening torques", page 9.
- For cable terminals with retaining clips, set
up the cable so that both sides of the bridge
are at about the same clamping height.
- Bend the individual conductors into a U-
form or connect up using a suitable terminal
end.
- The protective conductor and the outermost
earth conductor must be bent into a U-form.