APC 6739380EN/JC user manual Start-up of an inverter, Single-unit or modular UPS system

Start-up (cont.)

Start-up of an inverter

When the rectifier/charger is on:

◗press the "inverter on" button 6 on the control panel;

◗green "load protected" light 5 blinks for 3 seconds;

Single-unit or modular UPS system:

◗the inverter starts and if the transfer to Mains 2 conditions are correct, the load is supplied by the inverter;

◗red "load not protected" light 2 goes off,

◗green "load protected" light 5 becomes constant.

Frequency converter or multi-bypass UPS:

◗the inverter starts and awaits the start of the other inverters;

◗when they are all on or enough have been started to supply the rated load power, the output switch for each running line closes and the load is supplied with power;

◗red "load not protected" light 2 goes off,

◗green "load protected" light 5 becomes constant, on the control panel of each line supplying the load.

Modular UPS with external maintenance bypass or parallel UPS with SSC:

◗the inverter starts and awaits the start of the other inverters;

◗when they are all on or enough have been started to supply the rated load power, the output switch for each running line closes and the load is supplied with power;

◗red "load not protected" light 2 goes off,

◗green "load protected" light 5 remains on, without blinking, on the control panel of each line supplying the load and on the control panel of the Static Switch Cubicle.

Frequency converter without a battery:

◗Start-up of the rectifier/charger automatically leads to start-up of the inverter.

6739380EN/JC - Page 23