| Rotating Electrical Machines - Type Test |
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| Test Conducted on Induction
Motor |
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| Routine Test |
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| The following routine tests as per
IS-325 are conducted on all motors; |
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Insulation resistance
test. |
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Measurement of resistance of
windings of stator and wound rotor. |
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No-Load test. |
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Locked rotor readings of voltage,
current and power input at suitable
reduced voltage. |
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Reduced voltage running up test
(for squirrel cage motors). |
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Open circuit voltage ratio of
stator and rotor windings (for
slip ring motors). |
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High voltage test. |
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| Type Test |
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| The following Type tests as
per IS-325 are carried out: |
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Measurement of resistance
of windings of stator and wound
rotor. |
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No load test at rated voltage
to determine input current, power
and speed. en circuit voltage |
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Open-circuit test of wound rotor
motors. |
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Reduced voltage running up test
at no load. |
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Locked rotor readings of voltage,
current and power input at suitable
reduced voltage. |
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Full load test to determine
efficiency, power factor and slip. |
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Temperature rise test. |
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Momentary overload test. |
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Insulation resistance test. |
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High voltage test. |
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| Additional Test |
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| The following additional tests
are also carried out on request : |
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Test for vibration
severity of motor on no-load. |
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Test for noise levels of motor
on no-load. |
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Test for degree of protection
by enclosure (For second numeral
only). |
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| Note : Type test
on vertical motors will be conducted
with its respective/suitable pump coupled.
Load test and temperature rise test
will be conducted at maximum available
load. |
