File:Trapped key interlock transfer block.JPG
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Summary
| Description |
English: This is a transfer block, part of a trapped key interlock system. To obtain the keys required to open other doors, a key must be inserted in this block and turned, releasing two keys. Until the released keys are returned, this key is held and cannot be used to unlock an upstream protective disconnecting device. |
| Date | |
| Source | Own work |
| Author | Wtshymanski |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:16, 26 February 2015 | | 4,000 × 3,000 (2.08 MB) | Wtshymanski | User created page with UploadWizard |
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