1800 Series User Manual
2
aPPendix d: ByPass underVoLtaGe /
oVerVoLtaGe
When the 1800 Series UPS is in bypass mode the undervoltage and overvoltage
limits are restricted to +/-10% of the rated input voltage. If the input voltage is
outside of this voltage window the UPS output will be turned off. There is a 5%
hysteresis associated with both the upper and lower limits. This means that
once output has been turned off the input voltage will have to be within ±5% of
the rated input voltage before the startup sequence will re-initialize.
When the UPS is started, if the RUN/STOP switch is in the STOP (bypass)
position the unit will start in the on-line mode for 1 second before switching
to bypass mode. If the input voltage is out of range the UPS will turn off the
output after 1 second rather than switching to bypass.
Summary of Contents for 1800 SERIES
Page 2: ......
Page 47: ...1800 Series User Manual 47 NOTES ...
Page 48: ...1800 Series User Manual 48 Notes ...
Page 49: ...1800 Series User Manual 49 Notes ...
Page 50: ...1800 Series User Manual 50 Notes ...
Page 51: ......