Hospital cures PBX failures with surge protection.
Communications News › Vol. 31 Nbr. 4, April 1994
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Summary
New Orleans Adolescent Hospital - Disaster Recovery
Unplanned shutdowns of the New Orleans Adolescent Hospital's Dimension 400 PBX were originally thought to be caused by lightning strikes, but when problems continued, another explanation was sought. An electrician traced the difficulty to the hospital's emergency distribution system. Every time a Fairbanks-Morse 400KW 277/480V emergency generator started up, a power surge caused the phone system to fail. Even though the problem involved the facility's emergency generator, an HB277Y Sentrex three-phase 277/480V hard-wired surge suppressor with SuperPath circuitry was installed at the hospital's main emergency power-distribution panel. This approach not only eliminated the phone problem, but also provided protection for other equipment.See the full content of this document
Extract
Hospital cures PBX failures with surge protection.
Rawn Davis heard that lightning never strikes twice in the same spot. So when periodic, unexplainable shutdowns of the New Orleans Adolescent Hospital's Dimension 400 PBX were said to be the result of continuous lightning strikes, Davis didn't buy it.
"Cons...See the full content of this document
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