96
UPS 225 - 275 kVA/300kVAPF0.8
1027212
User’s and Installation Guide
Revision E
Figure 7-7. The normal positions of the MBS switches and rectifier disconnect switch (must be located in the site
wiring)
Turn UPS from normal mode to mechanical bypass
The procedure to turn the UPS to mechanical bypass switch is described below.
1.
The normal start position should be following:
2.
Perform transfer from normal mode to bypass mode as described in Section 7.3.11.
Remember to verify the transfer before proceeding the next step.
3.
Turn the switch S10 from UPS (II) position to Bypass (I) position.
4.
Perform the LOAD OFF procedure in Section 7.3.28.
5.
Turn OFF the rectifier switch to disconnect UPS rectifier input.
6.
Turn OFF the Static bypass switch to disconnect UPS bypass input.
UPS is now in the mechanical bypass mode, See below:
Turn UPS from mechanical bypass to normal mode
The procedure to turn the UPS back to normal mode is described below.
