Front Panel Indicator Led Functions; Battery Backup Time - Toshiba 1400 Series Operation Manual

TOSHIBA
5.0 Operating the UPS
5.2 System Protection Features (Cont'd)
The following table lists explanations for the protection features for the 500, 600,
750, 800, 1000, 1200, 1500, and 2000 VA UPS units.
Item Overcurrent
Setting level Chopper OC: 140%
DC OC: 200% of the
main transistor's
rating (instantaneous)
Cause Transistor fault (short
circuit; load inrush
current; control
malfunction
Operation Transfer to bypass;
mode after stop chopper, INV
fault
Audible alarm None
Visible alarm Fault light
5.3

Front Panel Indicator LED Functions

1.) AC LINE: This green LED lights when normal ac input power is being supplied to
the UPS unit.
2.) INVERTER: This green LED lights when the inverter output voltage is normal.
3.) FAULT: This red LED lights when an overcurrent, overvoltage, overload, or
overheating problem is detected. Operation of the unit's inverter is inhibited until
the fault is corrected and the system is reset. Refer to Section 5.2 "System
Protection Features" for details.
5.4

Battery Backup Time

The UPS unit's batteries provide about 10 minutes of back-up time for the 500
through 1200 VA capacity units and about 8 minutes of back-up time for the
1500 through 2000 VA capacity units. These times are valid when the unit is
operating under full load. When the units are operating at half load, the batteries
can power the load equipment about 3 times longer. The
times will depend on the UPS model used, condition of the batteries, amount of
load, temperature and other variables. See battery backup time in the standard
specifications Sections 4.1 and 4.2.
UPS Protection Features
Over-
voltage
(OC) (OV)
120% of rated
voltage (avg.)
Control
malfunction
Transfer to
bypass; stop
chopper, INV
None
Fault light
5 - 5
Under- Overload
voltage
(UV) (OL)
85% of rated 150% for 1
voltage min. of rated
output current
Excessive load Overload;
connected to short circuit at high ambient
UPS output; load
control
malfunction
Transfer to Transfer to
bypass; stop bypass; stop
chopper, INV chopper, INV
None Yes
Fault light Fault light
Overheat
(OH)
90 deg. C or
194 deg. F
Fan failure;
temperature
Transfer to
bypass; stop
chopper, INV
None
Fault light
exact length of these