Site Preparation Checklist
Grounding
CAUTION: Ensure the UPS must be correctly grounded for
proper operation. Older facilities may have inadequate
electrical grounding. Inspection must be performed by a
qualified electrician before installation to ensure that
grounding meets the local electrical code.
MISE en GARDE: Assurez-vous que l’ASI est
convenablement mise à la terre pour un bon
fonctionnement. Les plus vieilles installations peuvent avoir
une mise à la terre électrique inappropiée. Un électricien
qualifié doit faire une inspection avant l’installation pour
s’assurer que la mise à la terre est conforme au code local
d’électricité.
Branch Circuit Breaker Protection
CAUTION: To provide branch circuit protection, the utility
line attached to the UPS’s input must be protected by a
circuit breaker certified for this use as per the local electrical
code. The breaker’s minimum size is calculated by the
following formula:
Minimum Breaker Size= UPS’s maximum input current / 0.8
The UPS’s maximum input current is read off the UPS’s
nameplate. For example, if the nameplate gives the
maximum input current as 20A, the circuit breaker should be
rated at least 25A.
R450 Data Collector Installation and Maintenance Guide
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Chapter 4: I Uninterruptible Power Supply
Summary of Contents for R450
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