EMP Protection for Emergency Operating Centers
Install a separate shielded control system as a backup, one that permits manual control of the elevator even if the automatic control circuit is inoperative. ... A manual changeover switch to provide direct control of the motor and brake contactors.
| Title | : | EMP Protection for Emergency Operating Centers |
| Author | : | United States. Office of Civil Defense |
| Publisher | : | - 1971 |
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