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Ground and short-circuit the terminals.
Cover or isolate nearby components that are still live.
To energize the system, apply the measures in reverse order.
Electric motors have hot surfaces, contain live parts and dangerous rotating parts. Fatal or severe
injuries and substantial material damage can occur if the required covers are removed or if the
motors are not handled, operated or maintained properly.
LIFTING AND STORAGE
Please check the delivered product if any damages can exist in transportation process.
Motors above 25 kg weight have lifting lugs or eye bolts. The actual weight of motors is shown on the
nameplate.
Only the main lifting lugs or eyebolts of the motor should be used for lifting the motor.
Use all the lifting eyes on the motors.
Don't use damaged lifting lug.
Shocks, falls, and humidity should be avoided during transportation
During storage, the following conditions must be satisfied.
The storage rooms must provide protection against extreme weather conditions. They must
be dry, free from dust, frost, and vibration, and well ventilated.
Temperature shall be between -15°C and 40°C.
Motor shaft shall be rotated by hand at least once per year.
Protect motors from direct effect of sun and from gases that have corrosion impact on
motors.
Unprotected machined surfaces (shaft-ends and flanges) should be treated against corrosion.
Open any condensation drain holes to drain the condensation (<6 months).
If an anti-condensation heater is provided, switch it on during the machine stoppages.
COMMISSIONING
Immediately upon receipt, check the motor for external damage (e.g. shaft-ends and flanges and
painted surfaces) and if found, inform the forwarding agent without delay. Check all nameplate data,
especially voltage and winding connection to ensure that the motor protection and connection will
be properly done.
Checking The Insulation Resistance
Motor winding insulation resistance shall be measured prior to starting the motor, if the winding is
too damp.
Only appropriately trained personnel may carry out this work.
Before starting commissioning, install all covers that are designed to prevent active or
rotating parts from being touched.
If any power cables are connected, check to make sure line supply voltage cannot be
connected.
Once you have measured the insulation resistance, discharge the winding by connecting it to
the ground potential.
Measurement of insulation resistance should be performed while the motor is not in
operation.
If the measurements are performed at winding temperatures not equal to 25 °C, convert the
measured value to the reference temperature of 25 °C to be able to compare the values with
the table below.
The insulation resistance halves every time the temperature rises by 10 °K.
The resistance doubles every time the temperature falls by 10 °K.
Insulation resistance, corrected to 25°C, must be higher than the reference value given below.
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