Installation and Operation Manual
Page 46 of 156
[PVI-XXX.0-YY(-TL) - Rev:1.0]
6.2.2
Multi-Master-Slave System
In this configuration, the two modules of the Master-Slave Framework have the same photovoltaic
field. Each DC disconnecting switch is linked to the other of the same Framework.
NOTICE
In this case, it is particularly important to
understand the use of the DC disconnecting
switches. Improper use may cause the inverter
to breakdown.
The following table indicates, in the first column, the position of the switches, in the second
whether the photovoltaic field is connected to the module, and in the third whether it can be
removed or inserted in the seat.
Table 6-2: ADMITTED OPERATIONS AND POSITION OF THE DC SWITCHES
MASTER - SLAVE
P
OSITION
D
ISCONNECTING
SWITCHES
DC
Figure 6-8
P
HYSICAL
CONNECTION
BETWEEN
DC
SOURCE AND
M
ODULE
W
ITHDRAWAL
/
I
NSERTION OF
M
ODULES
*
H
(high)
L
(low)
H
(high)
L
(low)
A
NO
NO
YES*
YES*
B
YES
YES
NO
NO
C
YES
YES
NO
NO
D
YES
YES
NO
NO
*before withdrawal, wait 5 minutes after the last disconnecting switch was positioned on 0 (OFF).
