Arrangement for reducing shaft voltages in dynamoelectric machin

Details Arrangement for reducing shaft voltages in dynamoelectric machin Arrangement for reducing shaft voltages in dynamoelectric machin

1987-11-17

1989-05-16

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310221, 361212, H02K 524, H01H 948, H01R 3902

Patent

active

048312959

ABSTRACT:
An arrangement for reducing voltages appearing in turbosets, wherein in addition to a grounding brush (7) on the drive end (DE), another (18) grounding brush is provided on the nondrive end (NDE) and is connected to ground (5) by an RC element (19,20). In this way, when grounding brush (7) on the drive end malfunctions, static charges and alternating frequency currents are reliably discharged.
The currents flowing on the nondrive end and the voltages appearing between grounding brush (18) and ground (5) further allow reliable statements to be made about the operational capability and operational safety of the shaft grounding.

REFERENCES:
patent: 4535377 (1985-08-01), Lane
Posedel et al., "Shaft Voltages in Turbosets", Swiss Federal Inst. of Tech.

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