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Electrostatic Precipitator Key Transfer Blocks
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Key transfer blocks provide the mechanism by which access authority is moved from one point in a key interlock system
to another. Key transfer blocks generally require that one or several keys must be present before one or more keys can
be released. For example, the presence of all transformer/rectifier ground keys might be required to be present in a
transfer block before access door keys are released. Likewise all the access door keys would be required to be present
before the ground keys were released from the transfer block and used in the transformer-rectifiers. |
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Key Transfer Block |
This transfer mechanism is extremely useful on multi-chambered precipitators where chambers can be energized separately.
For example, on a double-chambered precipitator, when the transformer-rectifier set is properly grounded, the ground keys
from one chamber might be released while ground keys for the other chamber are retained. In such a situation, the released
ground keys would be used in a key transfer block to release the access door keys to the grounded chamber. On the other hand,
the retained ground keys for the other chamber would not be available and access door keys for that chamber would be retained
in the associated transfer block, thus providing a situation where one half of the precipitator could be safely energized
while service is performed on the other half.
| Hamon Research-Cottrell parts |
800 722-7580 |
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