-
external over voltage protectors have to be used at the module junction box (expulsion-type
arrestor, varistor, suppressor diode with
≥
10kA)
keep modules and lightning protection next to each other
connection between modules and charge regulator
shielded. All metal parts should be grounded.
lsion-
pen circuit voltage of the
9 Gro
9.1 Positive grounding
When a
it can also be taken as common mass for all
system
internally
9.2 Ne
Only one
module,
groundin
When y
mass (e
can be connected with this mass. A
onnection with further minus poles (module
r load) bridges control elements and the
fuse. This can lead to a malfunction and
destruction of the controller.
The metal case is not connected to a battery
potential.
GND
GND
GND
-
lay grounding cables separately to the DC cables
Inside protection zone
protected photovoltaic field
Outside protection zone
unprotected photovoltaic field
avoid loops between module cables
The
should be
Lightning rods can help to protect from voltage spikes
but they should not shadow the modules at any time.
+ - + - + -
P
B
U
Regulator
The module junction box should contain an expu
type arrester and/or a suppressor diode and a varistor
with a high energy capacity (15 kA). The limited voltage
should be just above the o
modules.
unding
grounding at the plus-side is chosen,
components. All plus connections are
connected anyway.
gative grounding
minus connection of the components
accu or load can be grounded. (e. g.
g of aerials)
our solar system determines a minus
. g. accu minus) only this component
c
o
GND
GND
GND
M-
A-
L-
L
+
M
+
A
+
M-
A-
L-
A
+
L
+
M
+
PF
telecom
Underground loop
Junction
box
V array
P
shielded cables
23
Содержание Power Tarom 2070
Страница 28: ......