Metering, Monitoring, Alarms, And Controls - Toshiba T90S3S08KS6XSN Manual

Guide Specification – 3-Phase Static Uninterruptible Power Supply
Operating Mode
Automatic
"BYPASS"
switch operated
Automatic
"UPS"
switch operated
If the bypass source is beyond the conditions stated below, interrupted transfer shall be
made upon detection of a fault condition.
5.4.2 Overload Capacity in Bypass:
5.4.3 Retry function:
When an internal warning/failure has been detected, power flow shall automatically
switch from the main circuit (inverter) to the bypass circuit without interruption to the
load. If the internal warning is cleared, UPS shall automatically switch the power flow
from the bypass circuit to the main circuit (inverter) without interruption.

5.5 Metering, Monitoring, Alarms, and Controls

5.5.1 Status Indicators
The Front Panel shall include LED status indicators for the following states:
5.5.2 EPO (Emergency Power Off) Button
The Front Panel shall have an Emergency Power Off button (EPO) located on the front
panel that, when pressed, will shut down the UPS.
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Transfer mode
Inverter to Bypass
(Overload, Internal Fault)
Inverter to Bypass
Bypass to Inverter
(Auto-Retransfer Mode)
Bypass to Inverter
Bypass voltage greater than + 10%, -10% from the UPS rated output voltage.
Bypass frequency exceeds + 3 Hz from the UPS rated output frequency.
Continuous duty
Overload duty
Load on Inverter
Battery Operation
Load on Bypass
Overload
LCD Fault
UPS Fault
Transfer Type
Synchronized
Uninterrupted
Uninterrupted
Uninterrupted
Uninterrupted
: 125% of the system rated capacity
: 1000% of ampere rating for 1 cycle.
Unsynchronized
Interrupted
Interrupted
(forced transfer)
Transfer inhibited
Transfer inhibited
March 2009