70
30-200 kW
P-164000249
User's and Installation Guide
Revision 2
NOTE
The integral MBS and Static Bypass need to supplied by the same source.
To turn the UPS to mechanical bypass switch:
1.
The normal start position should be following:
Maintenance Bypass
Switch (MBS)
Figure 6-6: The normal positions of the MBS switches and rectifier disconnect switch
(must be located in the site wiring)
2.
Perform transfer from double conversion mode to bypass mode as described in
Chapter 6.4.3
Transfer from Double conversion mode to Bypass mode
on page 64. Remember to verify
the transfer before proceeding to the next step.
3.
Turn the MBS from UPS position to Bypass position.
4.
Perform the LOAD OFF procedure in
Chapter 6.4.7 UPS system and critical load shutdown
on
page 66.
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:
Figure 6-7: Mechanical bypass mode
