Additional Installation, Operating and Maintenance Instructions (Translation)
English
Edition 07.2010 VEM-Ident-No. 73753 01en
3
Motor connection
The connection has to be done by qualified personnel according to the valid security regulations.
Outside of Germany the required national standards must be applied.
Name plate designations have to be observed under all circumstances!
Compare current type, mains voltage and frequency!
Mind connection type!
Mind rated current for motor protection switch setting!
For motors with type of protection „increased safety“ “e” the t
E
- time has to be observed!
Connect the motor according to the connection diagram inside of the terminal box!
Earthing shall be done with the earthing clip that can be found at the enclosure or at the end shield depend-
ing on the type of construction. In addition all motors are equipped with a ground conductor clamp inside of
the terminal box. Unused cable glands of the terminal box have to be closed for protection against dust and
humidity. For electrical connection the standard security and starting instructions are valid. The cable glands
or screwed sealing plugs must be admitted for use in Ex-applications. The installation torques, sealing areas
and clamp ranges of the cable clamps given by the manufacturer have to be observed unconditionally.
Supply cables have to be selected according to DIN VDE 0100 taking into account rated current and opera-
tional conditions (i.e. ambient temperature, method of cable installation etc. complying with DIN VDE 0298
and IEC / EN 60204-1)
Take extra care when connecting the supply cables in the terminal box of the motor. The nuts of the connec-
tion screws have to be fastened without force.
Tightening torques for bolts (terminal box, end shield, bearing cover)
Thread Ø
M5
M6
M8
M10
M12
M16
M20
End shield
-
-
25
45
75
170
275
Bearing cover
5
8
15
20
20
-
-
Terminal box
-
4
7,5
12,5
-
20
-
Engineering design
Up to size 280 the housing of the motor is manufactured as grey cast iron housing with cast-in cooling pipes.
Starting from size 315 the housing is manufactured as double-walled, welded steel construction. Terminal
boxes, end shields, insulation of the winding, type of protection and colouring are the same as for standard
motors. The advantage of water cooling can be found in a noise reduction compared to surface cooled three-
phase motors of the same size and output. The lost heat is dissipated without influence on the environment
and the cooling principle allows for a compact design of the motors with increased output and optimised vi-
bration damping at the same time.
Shaft
height
Material for
Foot mounting
Housing
End shield
Feet
225
– 280
Grey cast iron with cast-in
cooling pipes
Grey cast
iron
Grey cast
iron
bolted on
315
Steel-welded construction
Grey cast
iron
Grey cast
iron
cast on
355
Type of protection
The standard version of the motors has a degree of protection in IP 55; according to the order, the degree of
protection can be increased to IP 56. Protection types of IP 65 and higher are available on request.
For all motors in types of mounting with shaft end upwards (IM V3 / IM V36), the user must prevent the in-
gress of water along the shaft.
The operator must prevent that water can ingress in the motor from the shaft for motors with flange end-
shields in types of mounting IM V3 / IM V36. Flange motors in type of constructions IM V3 / IM V36 are fitted
with a drain hole as standard so that condensate water can be drained.
For applications in the open, normally no specific protection measures against weather influences are re-
quired. If it is possible, that the motors are stored or operated below freezing point, freezing of the cooling
water inside the motor must be prevented. Additionally, the motors must be protected against intensive sun
radiation, e.g. by a protective roof.
