Delta N-12K, User Manual

Page: 5 / 27

3
2. INTRODUCTION
2-1 FUNCTIONS AND FEATURES

A True ON LINE design. The UPS insures the critical power protection for your
mission-critical equipment at all times.

Wide input range of power supply that reduces discharge rate of battery.

A smart charger design for auto equalizing charge to shorten charging time.

Equipped with RS232 port and Dry-contact interface, using the power management
software “UPSentry Smart 2000” allows near-end and far-end UPS monitoring
management.

Automatic detection of 50/60Hz field input frequency

With excellent performance. Input current using active input power factor correction
and a high-frequency inverter with pulse width modulation.

Optional isolated output transformer: Provides isolation and multiple output voltage.

Start-on-battery capability for powering up the UPS even if utility power is not
available.

Optional SNMP interface card is an optional accessory for network communication.

Implementing diagnostic test and LCD message display by using microprocessor
technology can provide detailed information on operation status.

Manual and static bypass switch forms. Allowance for switching to the main power
supply.

Static bypass supply circuit incorporates functions such as surge suppression and
EMI filter.

Remote emergency power off (REPO): Emergency shutdown control through the
remote emergency power-off (REPO) port.

Auto recovery function of inverter:

When the AC power is restored after a low battery shutdown, the UPS inverter will
automatically restart.

Automatic transfer to inverter output from static bypass after overload condition is
cleared.

Alarm cancel facility to switch off the audible alarm and indicative lights still lit in the
event of long BACK-UP periods.

External battery cabinet can be used for extending operation time of battery mode.

Operation of “ECONOMIC Mode” (Optional): When input voltage is within the range of
rating voltage (±10%), the UPS is working in the bypass mode for higher efficiency.
Otherwise the UPS will be switched to inverter mode.

Auto detection for voltage in bypass mode: The protection range is +15%~ - 20%.
When the bypass voltage is beyond protection range, the UPS will not supply output
power to the load.

Auto detection and display for normal operation of fan.