Motor Instructions
Declaration of Conformity
Declaration of Conformity with respect to the Low vol-
tage Directive 73/23/EEC amended by Directive 93/68
EEC are issued separately with individual motors.
The declaration of Conformity also satisfies the require-
ments of a Declaration of Incorporation with respect to
the Machinery Directive 89/392/EEC.
Validity
The instructions are valid for the following Høyer electri-
cal motor types, in motor operation.
Aluminiummotors MS
56-132
Cast motors
Y2E2 80-400
(Additional information may be required for some motor
types due to special application and/or design conside-
rations.)
Activating the motor
Acceptance inspection
Immediately upon receipt check the motor for external
damage and if found, inform the forwarding agent right
away.
Check all rating plate informations, especially voltage
and winding connection (star or delta).
Turn shaft by hand to check free rotation, remove trans-
port locking if used.
Insulation resistance check
Measure insulation resistance before commissioning and
when winding dampness is suspected.
Resistance, measured at 25° C shall exceed the refe-
rence value, ie
Ri [M ]
≥
(20 · U) / (1000 + 2P),
Where U = voltage in Volts; P = power output in kW
WARNING
Windings should be discharged right away after measu-
rement to avoid risk for electric shock.
Insulation resistance reference value is halved for each
20° C rise in surrounding temperature.
If the reference resistance value is not secured, the win-
ding is too damp and must be oven dried.
Oven temperature should be 90° C for 12-16 hours fol-
lowed by 105° C for 6-8 hours.
If drain hole plugs are fitted, they must be removed
during heating.
If windings get soaked in sea water, they normally need
to be rewound
Direct start or star-delta start
The terminal box on standard single speed motors
normally contains 6 winding terminals and at least one
earth terminal.
Earthing shall be carried out according to local regu-
lations before the motor is connected to the supply
voltage.
The voltage and connection are stamped on the rating
plate.
Direct starting
Y or winding connections may be used. eg 690 VY, 400
V indicates Y-connection for 690 V and -connection
for 400 V.
Star-Delta start (Y/ ):
The supply voltage must be equal to the rated voltage of
the motor in -connection.
Remove all connection links from the terminal block.
For two-speed and special motors, 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 motor drive end, when the line phase
se quence L1, L2, L3 is connected to the terminals as
shown in enclosed drawing.
By interchanging the connection of any two line cables,
the direction and rotation is altered.
If the motor has a uni-directional fan check that the
direction of rotation is according to the arrow marked
on the motor.
Employment
Operating environment
The motor is meant for use in industrial environments.
Normal surrounding temperature limits -25° to +40° C.
Maximum altitude 1000m above sea level.
Security precautions
The motor is intended to be installed and used by
qualified personel who are familiar with relevant safety
requirements.
Safety equipment necessary for the prevention of
accidents at the mounting and operating site shall be
provided in accordance with the normal regulations in
the local country.
WARNING
Small motors with supply current directly switched by
thermally sensitive switches can start automatically.
Important
•
the motor shall not be used to step on
•
the outer casing of the motor may be very hot, even
during normal operation
•
some special motor applications require special
instructions (eg using frequency converter supplies).
3
September 2005
motorinstruktioner-A5-10 OUTL.indd 3
motorinstruktioner-A5-10 OUTL.indd 3
26/10/05 11:25:20
26/10/05 11:25:20
