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Commutators & Slip Rings
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Description
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Specification
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Technical
Parameters
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Over-speed Test
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O. D. Ø < 25mm
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Room
temperature:
44,000
rpm, after 10 minutes’ running,
Deviation between segments £0.003mm,
O.
D. change £0.007mm
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Heating:
250°C 40,000 rpm, after 10 minutes’ running,
Deviation between segments £0.003mm,
O.
D. change £0.007mm
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Ø25.5mm ~ Ø28.5mm
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Room
temperature:
40,000
rpm, after 10 minutes’ running,
Deviation between segments £0.003mm,
O.
D. change £0.007mm
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Heating:
250°C 38,000 rpm, after 10 minutes’ running,
Deviation between segments £0.003mm,
O.
D. change £0.007mm
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Ø28.5mm ~ Ø32.5mm
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Room
temperature: 37,000 rpm, after 10 minutes’ running,
Deviation between segments £0.003mm,
O.
D. change £0.010mm
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Heating:
250°C 35,000 rpm, after 10 minutes’ running,
Deviation between segments £0.003mm,
O.
D. change £0.010mm
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Ø28.5mm ~ Ø32.5mm
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Room
temperature: 34,000 rpm, after 10 minutes’ running,
Deviation between segments £0.003mm,
O.
D. change £0.010mm
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Heating:
250°C 32,000 rpm, after 10 minutes’ running,
Deviation between segments £0.003mm,
O.
D. change £0.010mm
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Insulation Test
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Various
Specifications
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Room
temperature: between shaft hole (bore) and commutator segment ³150MW
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Heating: 140°C
within 1 hour, between shaft hole (bore) and commutator segment ³100MW
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I.D.
Precision
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Various
Specifications
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With Bushing:
H7
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Without
Bushing H8
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Inclination
of Commutator Segment
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Various
Specifications
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£1/3 nominal insulation
thickness between the segments of commutator
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AC Frequency
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Various
Specifications
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50Hz, 60Hz
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