2 Safety
A
nd
C
onformity
2.1 Safety Instructions
Danger
T
o
L
ife
D
ue
T
o
L
ethal
V
oltages!
Letha
l v
oltage
s a
r
e p
resen
t w
ithi
n t
h
e u
ni
t a
n
d on t
h
e p
owe
r s
uppl
y l
ines
.
Therefore
, o
nl
y a
uthorize
d e
lectrician
s m
a
y i
nstal
l a
n
d o
pe
n t
h
e u
nit
. E
ve
n w
he
n
th
e u
ni
t is d
isconnected
, h
ig
h c
ontac
t v
oltage
s m
a
y s
til
l be p
resen
t w
ithi
n t
h
e
unit.
Danger
O
f
B
urn
I
njuries
D
ue
T
o
H
ot
E
nclosure
P
arts!
Durin
g o
peration
, t
h
e f
ou
r s
ide
s of t
h
e e
nclosur
e l
i
d a
n
d t
h
e h
ea
t s
in
k m
a
y b
ecom
e
hot
. O
nl
y t
ouc
h t
h
e f
ron
t e
nclosur
e l
i
d d
urin
g o
peration.
Grounding
T
he PV
G
enerator
Compl
y w
it
h t
h
e l
oca
l r
equirement
s f
o
r g
roundin
g t
h
e PV m
odule
s a
n
d t
h
e PV
generator
. We r
ecommen
d c
onnectin
g t
h
e g
enerato
r f
ram
e a
n
d o
the
r e
lectricall
y
conductiv
e s
urface
s in a m
anne
r w
hic
h e
nsure
s c
ontinuou
s c
onductio
n w
it
h
groun
d in o
rde
r to h
av
e o
ptima
l p
rotectio
n of t
h
e s
yste
m a
n
d p
ersonnel.
Capacitive Discharge Currents
P
V m
odule
s w
it
h l
arg
e c
apacitie
s r
elativ
e to e
arth
, s
uc
h as t
hin-fil
m PV m
odule
s
wit
h c
ell
s on a m
etalli
c s
ubstrate
, m
a
y o
nl
y be u
se
d if t
hei
r c
ouplin
g c
apacit
y d
oe
s
no
t e
xcee
d 4
70nF
. D
urin
g f
eed-i
n o
peration
, a l
eakag
e c
urren
t f
low
s f
ro
m t
h
e c
ell
s
t
o e
arth
, t
h
e s
iz
e of w
hic
h d
epend
s on t
h
e m
anne
r in w
hic
h t
h
e PV m
odule
s a
r
e
installe
d (
e.g
. f
oi
l on m
eta
l r
oof
) a
n
d on t
h
e w
eathe
r (
rain
, s
now)
. T
hi
s "
normal
"
leakag
e c
urren
t m
a
y n
o
t e
xcee
d 3
0m
A d
u
e to t
h
e f
ac
t t
ha
t t
h
e i
nverte
r w
oul
d
otherwis
e a
utomaticall
y d
isconnec
t f
ro
m t
h
e e
lectricit
y g
ri
d as a p
rotectiv
e
measure.
DC and AC
B
reaker
Disconnecting the unit securely from the grid and the PV generators, battery using DC and
AC breaker. DC and AC breaker shall be able to disconnect all non- ground conductors after
installation.
Grounding
T
he PV
M
odules
This unit is a transformer-less inverter. It has no galvanic separation. Do not earth the DC
circuits of the PV modules to the inverter. Only Earth the mounting frame. If you bond the
PV modules to the inverter you will receive an error message "PV ISO Low".
Qualification
O
f Skilled Workers
Knowledg
e of h
o
w an i
nverte
r w
ork
s a
n
d is o
perated
Instructio
n in h
o
w to d
ea
l w
it
h t
h
e d
anger
s a
n
d r
isk
s a
ssociate
d w
it
h i
nstallin
g
an
d u
sin
g e
lectrica
l d
evice
s a
n
d p
lants
Trainin
g in t
h
e i
nstallatio
n a
n
d c
ommissionin
g of e
lectrica
l d
evice
s a
n
d p
lants
Knowledg
e of a
l
l a
pplicabl
e s
tandard
s a
n
d g
uidelines
Knowledg
e a
n
d o
bservanc
e of t
hi
s m
anua
l a
n
d a
l
l s
afet
y i
nstructions
NOTE
NOTE
NOTE
No one should be opening the unit
3
4
