Toshiba 1400 Plus Series, Руководство по эксплуатации

Страница: 17 / 31

TOSHIBA
5.0 Operating the UPS
5.1 Operation Modes (Cont'd)
5.1.3
Circuit-bypass Mode
5 - 3
5-20P
Fuse
= power flow
Power
input
plug
Circuit
breaker
+
UPS batteries
UPS
main
circuit
5-15R
UPS
receptacles
(rear panel)
UPS batteries
UPS
main
circuit
= power flow
(rear panel)
receptacles
UPS
+
plug
input
Power
5-15R
5-15P
Fuse
Output Xfmr
(Plus Series)
_
Bypass circuit
Bypass circuit
Power flow in circuit-bypass mode for 1500 and 2000 VA Models
_
Output Xfmr
(Plus Series)
If the UPS unit is overloaded or develops an internal fault, the power flow is
automatically switched from the unit's main circuit to the bypass circuit mode.
Power flow through the bypass is shown in the above illustrations. This change-
over occurs automatically in approximately 4 milliseconds. The switching period
is not long enough to cause interruptions to occur in most UPS equipment loads.
After repairing the cause of the inverter shutdown, the energy flow must be
transferred manually from the UPS's bypass circuit back to the inverter circuit.
This is done by toggling the ON/OFF switch (on the unit's front panel) first to
OFF and then back to ON. This action resets (clears) the fault.
Power flow in circuit-bypass mode for 500, 600, 750, 800, 1000, and 1200 VA
Models