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4.
Operation
4.1 General Description
As double conversion On-line UPS, it can convert clean single-phase power to
support your critical system. The diagram of UPS is as shown above.
Input filter reduces transients and interference from the main
With PFC AC/DC, AC-power is rectified and regulated to DC power
DC power is converted to AC in the inverter passing it on to the load
Line-Mode/Battery-Mode
UPS will operate in Line-Mode that supports power and charge battery while
connected to power. During a power failure, the UPS will switch to Battery-Mode, in
which power is maintained from the battery. In case of failure time exceed Battery-Mode
duration, UPS will shut down until voltage return to prevent battery discharge.
Free Run Mode
Free Run Mode provides a wider input frequency range when input frequency
does not match the selected range (user adjustable). Free Run Mode enlarges input
frequency acceptance up to 45Hz ~ 65Hz but fixes output frequency to 50Hz(220V) and
60Hz(110V) with ±0.25Hz. Free Run Mode designs for large power variation. It is
activated in default and can run with Line-mode simultaneously.
High-Efficiency Mode
High-Efficiency Mode designs to minimize power loss and power consumption.
Whenever power is stable, UPS will automatically switch to bypass for efficiency. When
any irregularity is detected, Line-Mode will reactivate immediately. Switching occurs
when the input voltage is outside ±10% of nominal (±15% selectable), input frequency is
outside of ±3Hz, or when no input line is available.
You can also activate this mode from the LCD panel. Refer to UPS configuration
.
Diagnostic Test
The diagnostic test automatically executes to check and report UPS status. While
the advanced battery management system monitors the conditions of the batteries, it
sends early warnings if a battery replacement is needed. The test performs every 30
days of normal operation. Diagnostic tests can also activate by manual control.
Generator mode
Summary of Contents for SNT-1000
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