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LV Motors/Machine Instructions 10-2000
Machine Instructions
NOTE!
These instructions must be followed to ensure safe and
proper installation, operation and maintenance of the
motor. They should be brought to the attention of
anyone who installs, operates or maintains this
equipment. Ignoring the instruction may invalidate the
warranty.
Declaration of Conformity
Declarations of Conformity with respect to the Low
voltage Directive 73/23/EEC amended by Directive 93/68
EEC are issued separately with individual machines.
The Declaration of Conformity also satisfies the
requirements of a Declaration of Incorporation with
respect to the Machinery Directive 98/37/EEC.
Validity
The instructions are valid for the following ABB electrical
machine types, in both motor and generator operation.
series MT*, MBT*, MXMA,
series M2A*/M3A*, M2B*/M3B*, M2C*/M3C*, M2F*/
M3F*, M2L*/M3L*, M2M*/M3M*, M2R*/M3R*,
in frame sizes 63 - 400.
(Additional information may be required for some
machine types due to special application and/or design
considerations.)
Putting into service (starting)
Reception check
Immediately upon receipt check the machine for external
damage and if found, inform the forwarding agent without
delay.
Check all rating plate data, especially voltage and
winding connection (star or delta). The type of bearing is
specified on the rating plate from size 112 and larger.
Remove transport locking if employed.Turn shaft by
hand to check free rotation.
Motors equipped with roller bearings
: Running the
motor with no radial force applied to the shaft may
damage the roller bearing.
Motors equipped with angular contact bearing:
Running the motor with no axial force applied in the right
direction to the shaft may damage the angular contact
bearing.
Motors equipped with regreasing devices:
When starting the motor for the first time, apply at least
the specified quantity of grease until new grease is
forced out of the grease outlet.
For details see section “Machines with relubrication
system” on page 6.
Insulation resistance check
Measure insulation resistance before commissioning and
when winding dampness is suspected.
Resistance, measured at 25°C, shall exceed the
reference value, i.e. 10 M ohm (measured with 500 V dc
Megger)
WARNING
Windings should be discharged immediately after
measurement to avoid risk of electric shock.
Insulation resistance reference value is halved for each
20°C rise in ambient temperature.
If the reference resistance value is not attained, the
winding is too damp and must be oven dried.
Oven temperature should be 90°C for 12-16 hours
followed by 105°C for 6-8 hours.
Drain hole plugs, if fitted, must be removed during
heating.
Windings drenched in seawater normally need to be
rewound.
Direct-on-line or star/delta starting
The terminal box on standard single speed machines
normally contains 6 winding terminals and at least one
earth terminal.
Earthing must be carried out according to local
regulations before the machine is connected to the
supply voltage.
The voltage and connection are stamped on the rating
plate.
Direct-on-line starting (DOL):
Y or
∆
winding connections may be used.
eg 660 VY, 380 V
∆
indicates Y-connection for 660 V and
∆
-connection for 380 V.
Star/Delta starting (Y/
∆∆∆∆∆
) :
The supply voltage must be equal to the rated voltage of
the machine in
∆
-connection.
Remove all connection links from the terminal block.
For two-speed, single phase and special machines,
supply connection must follow the instructions inside the
terminal box.
Terminals and direction of rotation
Direction of rotation is clockwise when viewing the shaft
face at the machine drive end, when the line phase
sequence L1, L2, L3 is connected to the terminals as
shown in the figure 1.
To alter the direction of rotation, interchange the
connection of any two line cables.
If the machine has a uni-directional fan, ensure that the
direction of rotation is according to the arrow marked on
the machine.
