Alpha Technologies Continuity: 6K_10K - Manual (Page 46)

0170012-J0 Rev A Page 44
3. Arrange the power cables and the control signal cables as indicated in Figure 1 and Figure 2 depending on the
UPS type. Ensure all the circuit breakers at input and output ends are set to OFF position.
4. A maintenance bypass box (MTBS) is recommended for use during maintenance.
5. Only two terminal resistors of the UPS in parallel are to be set to the ON position as indicated in Figure 4. For 3
units in parallel only UPS 1 and 3 terminal resistors are ON; for 4 units in parallel, only UPS 1 and 4 terminal
resistors are ON.
6. Turn on the input breaker (CB1 and CBi) of the Utility (see Figure 4). Configure each UPS for parallel operating
mode and set the IDs (eg. UPS 1, ID=1) of the respective UPS. Ensure all parameters of each UPS are the
same.
7. If you are using the front panel for UPS parameter entry and setting, switch the UPS OFF and ON to exit
Configuration mode after all settings are complete.
8. If an external MTBS box is installed, ensure the switch is in Bypass position. Check to see if the UPS is in
Bypass mode with output voltage available.
9. Turn on the output breaker (CB2) and ensure the connected loads are supplied with power via the MTBS Box.
10. Turn on the output breaker of the UPS (CBo) and turn the switch of the MTBS Box to INV/UPS position. Now
the connected loads should be supplied with power via the UPS Bypass loop.
11. Turn on each UPS individually and make sure the UPS are in Inverter supply mode.
The installation procedures are now complete.