MASTERYS BC
from 15 to 20 kVA
20
IT
ALIANOENGLISH
MODES OF OPERATION
4
4.3 OPERATION WITH MANUAL MAINTENANCE BYPASS.
If the maintenance bypass is activated using the appropriate procedure, the load is powered directly from the
maintenance bypass, while the UPS is separated from the power supply and can be switched off.
This operating mode can be selected for maintenance to be carried out on the system so that the necessary
actions can be performed by service personnel without having to disconnect the power supply to the load.
4.4 OPERATION WITH EXTERNAL MANUAL BYPASS (optional).
The external maintenance bypass may be placed on the general distribution panel when the UPS is installed, or
by installing the bypass panel that is supplied on request. By-pass panel connection diagram.
If the UPS has an input for the auxiliary power supply, the
Q2 switch must
be connected to this input and the
main power supply input must be disconnected on the control panel.
If the maintenance bypass is activated with the appropriate procedure, the load is powered directly from the
maintenance bypass, while the UPS is separated from the power supply and can be switched off.
This operating mode can be selected for maintenance to be carried out on the system so that the necessary
actions can be performed by service personnel without having to disconnect the power supply to the load.
Q1 Bypass switch.
Q2 Mains power switch.
Q3 Output switch.
4.4-2
Mains
L3
L2
L1
L3
L2
L1
Lo
N
N
Load
IN
UPS
N
Lo
N
OUT
3-phase input/1-phase output for UPS 3/1.
Bypass panel connection diagram.
4.4-1
Mains
L3
L2
L1
L3
L2
L1
L1
N
N
Load
IN
UPS
N
L1
L2
L2
L3
L3
N
OUT
3-phase input/3-phase output for UPS 3/3.
Q1
Q2
Q3
Q1
Q2
Q3
Summary of Contents for Masterys MAS2BC115M+D1
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