OPTI-UPS DS 100KC33 II, User Manual, Page: 5 / 34

2-2 System Major Module Function Introduction
2-2-1 Rectifier
(1) Utilization of SCRs inverts AC voltage to DC voltage.
(2) Combination of CPLD and DSP make the rectifier more stable and reliable.
(3) Over-voltage protection.
(4) DC voltage soft starter.
(5) Float charging and equalization charging modes support.
(6) Float charging time is adjustable and available on the display panel.
(7) Battery test can be done with continuous AC supply.
(8) Manual and automatic periodic battery tests are settable on the display panel.
(9) Charging current is settable on the display panel.
(10) 12-pulse rectifier is optional for reducing input THD.
2-2-2 Inverter
(1) IGBT as a power component is adopted.
(2) The inverter is equipped with an output isolation transformer.
(3) DSP digital control processing technology is applied to improve analogue components’ aging,
temperature drift and for the purpose of using fewer components.
(4) Integrated A/D signal processing, 12-bit resolution and fast transition are featured.
(5) Heat dissipation structure combined with temperature protection makes the inverter more reliable.
2-2-3 Static Transfer Switch
(1) Use of SCR for the static transfer function of the inverter and the bypass can work in a variety of
environments.
(2)
High-frequency technology isolates the trigger circuit. The trigger circuit effectively triggers the STS
and results in switching without disconnection between inverter and bypass loops.
(3)
STS has triggering conditions for disable, bypass and inverter loops and is fully controlled by DSP.
2-2-4 Emergency Power Off (EPO)
For emergency or force majeure in operation, EPO is used by pressing the button for shutting down the UPS
immediately. Press EPO button to completely stop the UPS and EPO light is turned on (Fig 2-2-4 Left). Press
EPO button and select the button of “Turn off inverter” on the display panel to restart the UPS and EPO
light is turned off (Fig 2-2-4 Right).
Fig. 2-2-4