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34 Symmetra® MW with Internal Bypass Static Switch - User Guide - 990-1756A-001
Manual Bypass Operation
During manual bypass operation, the critical load is supplied directly by utility power, making it
possible to isolate the UPS and the Bypass Static Switch for maintenance.
A single-line diagram will appear on the screen, with an orange line indicating the power flow from
the utility to the load via the Q3 breaker.
Note
Battery power is not available as an alternate power source while the system is running
in manual bypass operation.
CAUTION!
Do not open Q3 when the UPS is in manual bypass operation, as this action may result in
a load drop or a failure of the UPS to support the load.
Breaker Identification
Q1 UPS input breaker Q5 Static bypass input breaker
Q2 UPS output breaker Q7 Battery breaker 1
Q3 Manual bypass breaker Q8 Battery breaker 2
Note
Only operate a breaker when the associated breaker lamp is on.
Main inverterDelta inverter
Bypass Static Switch
Battery