Chapter 6 Operating Instructions
MUST400_User manual_EN_REV02 User Manual
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5.2.8 Eco Mode
To improve system efficiency, UPS rack system works in bypass mode at normal time, and inverter is standby.
When utility fails, UPS transfer to battery mode, and inverter power the loads. The efficiency of ECO system
can be up to 98%.
NOTE: There is a short interruption time (lower than 10ms) when transfer from ECO mode to battery mode, it
must be sure that the time has no effect on loads.
5.2.9 Soft start
This function permit to absorb in gradual mode from mains after battery mode. Through MTR setting software
(see appendix c for installation) is possible to set delay from 3sec to maximum 10seconds the switching on of
the rectifier after mains failure. Once the mains come back the power module number 1 start the rectifier
absorbing from mains the others remain in battery mode. After the time set the second one switch on the
rectifier and so on up to the total power modules installed in the system.
This permit step by step gradual absorbing form mains after recovering of the mains.
Note: this activity must be done only by trained and expertise personnel.
