Danfoss DLX 3.8 UL User manual

DLX
User Guide
DLX 2.0 UL - DLX 2.9 UL - DLX 3.8 UL - DLX 4.4 UL
MAKING MODERN LIVING POSSIBLE
SOLAR INVERTERS

II
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User G
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Safe
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Qual
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(NEC)
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ide DLX UL series
SA
V
t
y Instructio
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U
ser Guide co
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ughly read a
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lation, opera
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ANSI/NFPA
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L00410625-01
IMP
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H
n
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ntains impo
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User Guide.
ty to protect
high freque
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. Anti-islandi
inverter’s su
p
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t
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p
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w
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the local re
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S
AFE
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NS
!
T
RUC
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r DLX UL inv
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a
tion and m
a
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persons an
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Detection
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II
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.
!

IV U
s
ser Guide DLX UL series L00410625-
0
0
1

User G
u
C
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
u
ide DLX UL series
C
ONT
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Introducti
Product O
St
a
2.1.
G
e
2.2.
W
a
2.3.
U
n
2.4.
Safety Pr
e
G
e
3.1.
Si
t
3.2.
R
e
3.3.
Installati
o
M
e
4.1.
C
h
4.2.
El
e
4.3.
Start Up...
Ini 5.1.
Operatio
n
C
o
6.2.
In
t
6.3.
Troubles
h
C
h
7.1.
T
a 7.2.
Maintena
n
S
w
8.1.
R
e
8.2.
R
e
8.3.
R
e
8.4.
Warranty.
W
a
9.1.
W
a
9.2.
Tech
In
v
10.1.
Fi
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10.2.
L00410625-01
E
NTS
on.............
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verview....
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a
ndards and
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rning Symb
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packing an
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cautions...
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o
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chanical Ins
t
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6
I 1.
The
D
mark
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DC t
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In a g
consi
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DLX
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LX UL invert
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l
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User G
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2.1.
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Table
2
Gri
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2.2.
Seve
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2.2.1
T
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2.2.2
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G
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t
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X
2.0 UL
X
2.9 UL
X
3.8 UL
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4.4 UL
Opti
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ative or pos
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fuses
L00410625-01
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CT
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re compatib
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8
2.2.3
• Wo
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• An
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W
2.3.
The
w
avoi
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app
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Table
2
Sym
b
Key F .
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t
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t
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te or potentia
m
oderate inju
e
or potential
h
e
used to indic
a
ttention sym
b
ser Guide DLX UL
f
or one week
,
formation
o
w
hen these
s
a
use serious in
j
d
ition exists t
h
g
eneral publi
c
l hazard pres
e
ries to worker
h
azard presen
a
te important
b
ol present in
t
series L00410625-
0
, daily
o
n how to
s
ymbols
j
ury or
h
at could
c
if not
e
nts a lesser
s and/or the
ts a risk to
operational
t
his
01

User G
u
2.3.1
2.3.
1
T
he
p
impo
visibl
e
Table
2
Sym
b
u
ide DLX UL series
Labe
l
.
1
.1. Prod
p
roduct label
rtant identifi
c
e
after install
2
.3: Symbols app
b
ol
D
D
s
w
R
m
D
U
p
D
a
S
L00410625-01
l
ing
uct Label
is attached t
c
ation infor
m
ation.
earing on the p
r
D
escription
D
ischarge tim
e
w
itch OFF
R
efer to this
Us
m
ust be read a
n
D
anger: Shoc
k
U
L listing:
T
he
rotection req
u
D
isposal: Do n
nd recycle th
e
– NO: Serial
N
o the lower
r
m
ation and c
h
Figure 2.1:
r
oduct label
e
: High voltag
s
er Guide:
T
h
e
n
d understoo
d
k
hazards – let
h
product mee
t
u
irements.
ot dispose in
g
e
m according
t
N
umber for in
v
r
ight side of t
h
aracteristic
s
Product Label
es may be pr
e
e
safety preca
u
d
prior to inst
a
h
al voltages a
r
t
s the UL 1741
g
eneral waste
!
t
o local regula
t
v
erter identific
t
he inverter
h
s
for the inve
r
e
sent inside th
u
tions and ins
t
a
llation
r
e present
safety, healt
h
!
Collect the v
a
tions
c
ation
h
ousing. It co
r
ter, and mu
s
e inverter for
1
t
ructions in t
h
h
and environ
m
a
rious parts s
e
ntains
s
t be clearly
1
hour after
h
is Guide
m
ental
e
parately
9

10
2.3.
1
T
he
P
conn
e
Table
2
Sy
m
U
2.4.
Follo
w
injur
y
2.4.1
The
D
stan
d
How
e
distri
b
2.4.2
Liftin
g
inver
t
• Wh
e
• Lift
•
T
ur
n
1
.2. PCB
L
P
CB labels id
e
e
ction area.
2
.4: Symbols app
m
bol D
e
A
C
te
G
r
U
npac
k
w
the instru
c
y
and equip
m
Ship
p
.
D
LX UL invert
e
d
ards and ap
p
e
ver, if any d
a
b
utor imme
d
Liftin .
g
and carryi
n
t
ers’ weight i
e
n lifting, be
n
carefully, ho
n
the whole
b
L
abels
e
ntify import
a
earing on the P
C
e
scription
C
: Alternating
rminal.
r
ounding: Gr
o
k
ing an
d
tions in this
s
m
ent damag
e
p
ing Da
m
e
r series are
t
p
rovals prior
a
mage to th
e
d
iately!
g and C
a
n
g the invert
e
s 49 – 53 lb
s
n
d the knee
s
l
d the invert
e
b
ody as one
u
a
nt informat
i
C
B
current
o
und terminal
.
d
Inspe
c
s
ection to un
e
.
m
age
t
horoughly c
h
to shipping.
T
e
inverter is f
o
a
rrying t
e
r must be c
o
s
. / 22 - 24 k
g
Figure 2.2: Co
r
s
, and keep t
h
e
r close to th
e
u
nit to avoid
i
on about th
e
Symbol
.
c
tion
pack and lift
h
ecked and
t
T
he inverter
o
und when u
he Inver
o
rrectly perf
o
g
(depending
r
rect lifting of th
e
h
e back strai
g
e
body and l
e
twisting the
U
e
different te
Descr
i
DC: Di
r
the inverter
t
ested in acc
o
is carefully p
u
npacking, pl
r
ter
o
rmed to pre
v
on model).
e
inverter
g
ht.
e
t the leg m
u
lower back.
ser Guide DLX UL
rminals in th
e
iption
r
ect current t
e
safely and t
o
o
rdance wit
h
p
acked befor
e
ease report i
t
v
ent back inj
u
u
scles do the
series L00410625-
0
e
customer
e
rminal.
o
prevent
h
internation
a
e
shipping.
t
to your
u
ries, as the
work.
01
a
l

User G
u
• Car
r
2.4.3
Unpa
• Pla
c
the
• Cu
t
• Re
m
the
• Bot
bet
t
the
• Re
m
out
•
T
h
e
• Sto
reu
s
After
2.4.4
• DL
X
• Mo
u
• Ins
t
• Ac
c
2.4.5
T
he
h
• NE
M
• Pro
v
wa
t
• Be
u
u
ide DLX UL series
r
y the invert
e
Unpa .
ck the invert
c
e the box in
packaging.
the seal, an
d
m
ove the up
p
envelope wi
h sides of th
e
t
er grip on t
h
box using t
h
m
ove the lo
w
the inverter
e
bag with ac
c
r
e all the ori
g
s
e.
unpacking t
h
Scop
e
.
X
UL single p
h
u
nting brack
t
allation Gui
d
essories: gro
NOTI
C
Condui
t
and m
u
Inver
t
.
h
ousing of th
e
M
A 3R for in
d
v
ide a degre
e
t
er, hose-dir
e
u
ndamaged
b
L00410625-01
e
r close to th
e
cking
er as follows
:
position, wi
t
d
open the b
o
p
er part of th
e
th the extra
p
e
inverter ca
s
h
e inverter. L
i
h
e “handles”
a
w
er section o
f
mounting b
r
c
essories is a
g
inal packing
h
e inverter, c
e
of Deli
v
h
ase inverte
r
e
t
d
e
unding stra
p
C
E
t
s, fittings a
n
u
st be provid
e
t
er Encl
o
e
DLX UL inv
e
d
oor or outd
o
e
of protecti
o
e
cted water a
b
y the exter
n
e
body.
:
t
h the top cl
e
o
x.
e
foam packi
p
roduct labe
s
e are narro
w
i
ft the invert
e
a
s illustrated
f
the foam pa
r
acket.
ttached to t
h
material for
heck that all
v
ery
r
p
, bracket scr
e
n
d bonding s
t
e
d by the sy
s
o
sure
e
rter series i
s
o
or use.
o
n from falli
n
nd corrosion
n
al formatio
n
e
arly visible a
ng material
a
l.
w
ed in order t
e
r carefully o
u
in Figure 2.3
.
ckaging and
h
e bracket.
possible lat
e
component
s
e
ws, extra pr
o
t
raps are not
s
tem installe
r
s
designed t
o
n
g dirt, rain, s
.
n
of ice on th
e
nd accordin
g
a
nd take out
o get a
ut of
.
take
e
r
Fig
u
s
are include
d
o
duct label
part of the s
t
r
.
o
:
leet, snow,
w
e
housing.
g
to the arro
w
the Installat
i
u
re 2.3: “Handles
d
and unda
m
t
andard sco
p
w
indblown d
u
1
w
markings
o
i
on Guide an
d
”
m
aged.
p
e of supply,
u
st, splashin
g
1
o
n
d
g

12
2.4.
5
2.4.
5
T
he f
r
The
u
cove
r
The l
o
instal
2.4.6
T
he l
o
calle
d
easy
t
5
.1. Mec
h
Figu
r
5
.2. Fron
t
r
ont surface
o
Figure 2.
5
u
pper cover
r
by unautho
r
o
wer cover
p
ler for electri
Rem
o
.
o
wer cover p
d
the Stringb
o
t
o de-energi
z
h
anical Di
e
2.4: Mechanic
a
t
Covers
o
f the invert
e
5
: Inverter struct
u
may be rem
o
r
ized person
s
p
rotects the
c
cal connecti
o
o
ving th
e
rotects the c
o
o
x. The lowe
z
e the DC ter
mension
s
a
l dimensions
e
r consists of
u
re
o
ved by Dan
f
s
voids the
w
c
ustomer co
n
o
n and main
t
e
Lower
C
o
nnection a
r
r cover is eq
u
minals on th
e
s
H: 28.
3
W:13.
9
D: 6.2 i
an upper an
d
1. U
p
2. Di
s
3. Lo
w
s
w
4. H
o
f
oss authoriz
e
w
arranty!
n
nection are
a
t
enance.
C
over
r
ea in the inv
e
u
ipped with
a
e
inverter.
U
3
inches / 720
m
9
inches / 353
m
i
nches / 158
m
d
a lower co
v
p
per cover
s
play
w
er cover wit
h
w
itch
o
le covers (Kn
o
e
d persons o
a
, and may b
e
rter and als
o
a
DC switch
o
ser Guide DLX UL
m
m
m
m
m
m
v
er.
h
DC disconn
e
o
ckouts)
nly. Remova
e removed
b
o
the inbuilt
c
o
n the front,
w
series L00410625-
0
e
ct
l of the upp
e
b
y the syste
m
c
ombiner b
o
w
hich make
i
01
e
r
m
o
x
i
t

User G
u
1.
T
u
r
2. Re
m
3. An
4. St
o
5. Fa
s
u
ide DLX UL series
WAR
N
T
he inv
only be
r
n OFF the A
C
DAN
G
Always
DC OF
F
to the i
n
m
ove the fo
u
gle the cove
r
o
re the lower
s
ten the scre
w
CAU
T
Never r
e
lower c
o
electro
n
L00410625-01
N
ING
erter is char
g
performed
b
C
circuit bre
a
G
ER
disconnect t
F
, but before
n
verter whe
n
u
r screws on
t
r
outwards, a
F
cover and s
c
w
s on the lo
w
T
ION
e
move the i
n
o
ver during
r
n
ic compon
e
g
ed with hig
h
b
y qualified
p
a
ker and the
D
he PV array
c
removing th
e
n
exposed to
t
he front wit
h
nd take it of
f
F
igure 2.6: Remo
c
rews safely
t
w
er cover wi
t
n
verter lowe
r
r
ain or in da
m
e
nts.
h
voltages, a
n
p
ersons.
D
C - switch.
c
ables from t
h
e
covers, as t
sunlight.
h
a 4 mm he
x
f
carefully.
ving the lower c
o
t
o avoid loss
o
t
h a torque o
f
r
cover in we
t
m
p condition
n
d removal o
h
e inverter a
f
he PV array
c
x
key.
o
ver
o
r damage.
f
0.74 ft-lbf /
t
conditions!
s can damag
f the lower c
o
f
ter turning
t
c
an supply u
p
1.0 Nm.
Removal of
t
e sensitive i
n
1
o
ver may
t
he AC and
p
to 600 V
DC
t
he inverter
n
ternal
3

14
S
3.
T
his
c
serie
s
instal
the
w
G
3.1.
The
D
main
feder
the i
n
3.1.1
Cont
a
conn
e
• Rea
•
T
h
e
co
n
S
AFE
T
c
hapter cont
a
s
safely. Thes
e
lation. Failur
e
w
arranty.
G
enera
D
LX UL inver
t
tenance mu
al electrical r
n
structions i
n
NOTI
C
T
he saf
e
to be a
b
Conn .
a
ct the local
u
e
cting to the
WAR
N
T
o ens
u
to pers
o
be perf
o
DAN
G
Never
w
breake
r
dischar
g
d the instru
c
e
inverter mu
s
n
nected to th
T
Y PR
E
a
ins instructi
o
e
safety prec
a
e
to follow t
h
l Prepa
r
er series con
t
st be perfor
egulations A
n
this User Gu
i
C
E
e
ty precauti
o
b
le to install
a
ections
u
tility comp
a
grid.
N
ING
u
re safe and
c
o
ns or dama
g
o
rmed by q
u
G
ER
w
ork with en
e
r
(s) and the
D
g
ed and saf
e
c
tions and ca
u
s
t be connec
is circuit.
E
CAU
T
o
ns on how
t
a
utions mus
t
h
e safety pre
c
r
ations
t
ain no user-
med by qua
NSI/NFPA 7
0
i
de.
o
ns and instr
u
a
nd operate
t
a
ny for interc
o
c
orrect electr
g
e to the eq
u
u
alified pers
o
e
rgized port
s
D
C switch mu
e
to work on.
u
tions on th
e
ted to a ded
i
T
ION
S
t
o install, op
e
t
be read tho
c
autions ma
y
serviceable
p
lified perso
n
0
NEC and OS
H
u
ctions in thi
t
he inverter
c
o
nnection a
g
ical connecti
u
ipment the
e
o
ns.
s
! Prior to the
st be turned
e
PV module
s
cated AC cir
c
U
S
e
rate and ma
roughly and
y
result in inj
u
p
arts, and in
s
n
s, who hav
e
HA, and foll
o
s User Guide
c
orrectly.
g
reements a
n
i
on of the in
v
e
lectrical wir
i
e
electrical co
OFF to ensu
r
s
prior to the
c
uit. No othe
ser Guide DLX UL
intain the D
L
understood
u
ry or death
a
s
tallation an
e
knowledge
o
w such regu
l
must be rea
d
n
d power ap
p
v
erter and pr
e
i
ng and con
n
o
nnection, th
e
re that the t
e
electrical co
n
r devices are
series L00410625-
0
L
X UL inverte
r
prior to
a
nd may voi
d
d
of state and
l
ations, and
d
thoroughly
p
roval befor
e
e
vent injury
n
ection must
e
AC circuit
e
rminals are
n
nection.
to be
01
r
d
e

User G
u
3.1.2
T
he i
n
•
T
h
e
•
T
o
a
tec
h
• Mis
int
e
op
e
• Ign
o
ma
i
3.1.3
Prior
t
and t
u
ide DLX UL series
Oper
a
.
n
verter must
NOTI
C
The DL
X
design
e
electric
e
inverter mu
s
a
void damag
h
nical specifi
CAU
T
Keep t
h
PV mo
d
the PV
v
the PV
v
NOTI
C
T
he op
e
maxim
u
of the s
temper
use of the in
v
e
rfere with t
h
e
rating and
m
o
ring the ins
t
i
ntenance m
a
Main
t
.
t
o service an
he DC sides
a
NOTI
C
Accessi
must o
n
compo
n
L00410625-01
a
tion
only be ope
r
C
E
X
UL series is
a
e
d purpose,
w
ity to feed in
t
s
t be operat
e
e to the inve
cations.
T
ION
h
e voltage an
d
ules is inver
s
v
oltage incr
e
v
oltage decr
e
C
E
e
n circuit vol
t
u
m PV syste
m
eries-conne
c
ature.
v
erter may d
a
h
e operation
o
m
aintaining t
h
t
ructions an
d
a
y void the i
n
t
enance
d maintena
n
a
nd be fully
d
C
E
ng the inver
t
n
ly be opene
n
ents.
r
ated in acco
a
grid intera
c
w
hich is to c
o
t
o the grid.
e
d without a
n
rter, it must
b
d current wi
t
s
ely proporti
o
e
ases from th
e
e
ases from t
h
t
age, V
OC
, m
u
m
voltage is
e
c
ted PV mod
u
a
mage the d
e
o
f the invert
e
h
e inverter.
d
guidelines i
n
verter warr
a
n
ce, the inver
t
d
ischarged.
t
er upper se
c
d by authori
z
rdance with
t
c
tive inverter
o
nvert PV-ge
n
n
y unauthori
z
b
e used with
t
hin the spe
c
o
nal to the t
e
e
product la
b
h
e product la
u
st never exc
e
e
qual to the
s
u
les, correct
e
e
vice or oth
e
e
r, or may ev
e
n this User G
u
a
nty.
t
er must al
w
Refer to 8.1.
S
tion voids th
z
ed persons
d
the instructi
o
and must b
e
n
erated DC
e
z
ed modific
a
in the opera
t
c
ified limits!
T
e
mperature;
a
b
el rating an
d
bel rating.
e
ed 600V
DC
u
s
um of the ra
t
e
d for the lo
w
e
r electrical e
q
e
n cause inj
u
u
ide and not
w
ays be disc
o
S
witch-OFF.
e warranty.
T
d
ue to dang
e
o
ns in this U
s
e
used exclus
e
lectricity int
o
a
tions.
t
ional limits
g
T
he voltage
g
a
t lower tem
d
at higher t
e
u
nder any co
n
t
ed open-cir
c
w
est expecte
d
quipment a
n
u
ry or death
t
performing
r
o
nnected o
n
T
he inverter
u
e
r of damag
e
1
s
er Guide.
ively for its
o
AC
g
iven in the
g
enerated by
peratures
e
mperatures
n
ditions.
T
he
c
uit voltage,
d
ambient
n
d can
t
o persons
r
egular
n
both the A
C
u
pper cover
e
to internal
5
C

16
•
T
h
e
ins
t
• No
dis
t
• Re
g
(re
f
• A s
a
S
3.2.
Obse
a suit
3.2.1
Suffi
c
up in
s
• Ob
s
F
e
inverter lo
w
t
allation and
unauthorize
d
t
ributor in ca
s
g
ular mainte
n
fe
r to 8.2. Reg
a
fety compo
n
S
ite Pr
e
rve the follo
w
able site. Thi
Mou
n
.
c
ient ventilat
i
s
ide the inve
CAU
T
Insuffic
space a
coolin
g
s
erve the mi
n
F
igure 3.1: Mini
m
w
er cover mu
s
maintenanc
e
d
modificati
o
s
e of failure.
n
ance must
b
ular System I
n
n
ent must al
w
e
parati
o
w
ing precaut
s
is crucial to
n
ting Lo
c
i
on and low
a
rter, which c
a
T
ION
i
ent cooling
m
round the in
v
and efficien
t
n
imum dista
n
m
um distances f
o
s
t only be ta
k
e
or repairs.
o
ns may be
m
b
e performe
d
n
spections).
w
ays be repl
a
o
ns
ions when
m
maintain th
e
c
ation
a
mbient tem
a
n result in p
m
ay lead to
d
v
erter and u
n
t
operation.
n
ces specifie
d
o
r optimum cool
i
k
en off by qu
a
m
ade to the i
n
d
to maximiz
e
a
ced by the s
m
ounting an
d
e
efficiency
o
perature are
ower losses.
d
egradation
o
n
blocked ve
n
d
below to
m
i
ng
1. 1
5
2. 1
1
3. 5.
9
4. 5.
9
U
a
lified perso
n
n
verter. Cont
e
the life exp
e
s
ame type an
d
installing th
o
f the inverte
needed to p
of performa
n
n
tilation ope
n
m
aintain opti
m
5
.75 inches / 4
1
.81 inches / 3
91 inches / 15
91 inches / 15
ser Guide DLX UL
n
s during th
e
act the syste
e
ctancy of th
d rating.
h
e DLX UL inv
e
r!
revent temp
e
n
ce! Ensure s
u
n
ings for opt
m
al cooling:
00 mm
00 mm
0 mm
0 mm
series L00410625-
0
e
electrical
m installer o
r
e inverter
e
rter series
o
e
rature buil
d
u
fficient air
t
imum
01
r
o
n
d
-

User G
u
•
T
h
e
• Ke
e
co
m
• It is
the
• Th
e
rea
d
3.2.2
T
he i
n
and t
• Ens
du
s
• Ens
• Th
e
te
m
int
e
• No
n
u
ide DLX UL series
WAR
N
The m
o
temper
e
inverter mu
s
e
p the lower
c
m
ponents.
not recom
m
inverter.
e
display sho
u
d
ily accessib
l
Envir
o
.
n
stallation o
f
he OSHA reg
u
WAR
N
Protect
the inv
e
period
s
ure a longer
s
ty, dry and c
o
ure a non-fla
e
ambient te
m
m
perature ris
e
e
rnal compo
n
n
-condensin
g
NOTI
C
Avoid
e
losses,
a
reduce
d
screen
q
CAU
T
T
he inv
come i
n
194°F/
9
L00410625-01
N
ING
o
unting surfa
c
ature (194°F
s
t be mount
e
c
over closed
m
ended to in
s
u
ld be at eye
-
l
e.
o
nment
f
the inverter
u
lations.
N
ING
the inverter
e
rter heat sin
s
of high perf
o
life and opti
m
o
ol environ
m
mmable an
d
m
perature sh
e
s above 104
n
ents.
g
relative hu
m
C
E
e
xposing the
a
s direct sunl
d
power out
p
q
uality.
T
ION
erter should
n
contact wit
9
0°C.
c
e must be s
u
/
90°C) of the
e
d in a vertic
a
when moun
t
s
tall the inve
r
-
level, the pr
o
must compl
y
from flamm
a
k can reach
t
o
rmance op
e
m
um perfor
m
m
ent
d
non-explosi
ould be bet
w
°F/+40°C th
e
m
idity must
b
inverter to d
ight causes i
p
ut. Also, dir
e
be installed
o
h the rear in
v
u
itable for th
inverter.
a
l position.
t
ing the inve
r
r
ters in living
o
duct label
m
y
with local r
e
a
ble and exp
l
t
emperature
s
e
ration.
m
ance of the
ve environm
w
een -13°F a
n
e
inverter ma
y
b
e between
4
irect sunligh
t
ncreased int
e
e
ct sunlight
m
o
n a location
v
erter surfac
e
h
e weight (4
4
rter to avoid
areas due t
o
m
ust be visib
l
e
gulations, t
h
l
osive enviro
s
as high as 1
inverter by i
n
ent to avoid
n
d 149 °F/-2
5
y
start to red
4
% and 99
%
t
! Direct sunl
e
rnal tempe
r
m
ay cause d
e
n
where peo
p
e
, due to tem
4
-49 lbs/20-2
2
damage to i
n
o
possible no
i
l
e and the c
o
h
e National
E
nments to a
v
94°F/90°C d
u
n
stalling it in
fire.
5
°C and +55
°
uce power t
o
%
.
ight may ca
u
r
ature that c
a
e
gradation o
f
p
le cannot ac
c
peratures u
p
1
2
kg) and
n
ternal
i
se levels of
o
nnection ar
e
E
lectrical Cod
e
v
oid fire, as
u
ring long
a clean, non
°
C. If the
o
protect
u
se yield
a
n lead to
f
the LCD
c
identally
p
to
7
e
a
e
-

18
•
T
h
e
sn
o
• Inv
e
R
3.3.
Com
p
equi
p
3.3.1
Disc
o
durin
from
main
t
• Bot
co
n
•
T
h
e
ha
v
• Eac
be
p
3.3.2
Over
c
prev
e
• An
o
• If a
f
rep
e
inverter is s
u
o
w and rain,
d
e
rter locatio
n
R
equir
e
p
liance with
t
p
ment requir
e
NOTI
C
Safety
e
compli
a
adequ
a
Disc
o
.
o
nnection de
v
g operation.
power surge
t
enance and
h AC circuit
b
n
ductor to fa
c
e
disconnect
d
v
e an interru
p
h disconnec
t
p
ermanently
Over
c
.
c
urrent prot
e
e
nt overheati
o
vercurrent
p
f
use blows o
lacing or res
e
u
itable for o
u
d
ust and san
d
n
should be i
n
e
d Safe
t
t
he local and
e
ments.
C
E
e
quipment
m
a
nce with N
E
a
te.
o
nnectio
n
v
ices, switch
They protec
t
s and syste
m
repairs.
b
reaker(s) an
d
c
ilitate maint
d
evices mus
t
p
t rating suffi
t
ion device
m
marked for
t
c
urrent
P
e
ction device
ng as a resul
t
p
rotection d
e
r a circuit br
e
e
tting it.
u
tdoor opera
t
d
.
n
close proxi
m
t
y Equi
p
federal elec
t
m
ust be provi
d
EC
to ensure t
n
Devic
e
es or circuit
t
the current
-
m
malfunctio
n
d
DC switch
a
enance wor
k
t
conform to
cient for the
m
ust be readi
l
t
heir purpos
e
P
rotecti
o
s
, fuses or ci
t
of overload
e
vice is requi
e
aker trips, t
h
t
ion, but sho
m
ity to the P
V
p
ment
t
rical regulat
i
d
ed and inst
a
he required
p
e
s
breakers, e
n
-
carrying co
n
n
s, and help
t
a
re recomm
e
k
and repairs
the local an
d
voltage and
l
y accessible
e
.
o
n Devic
e
rcuit break
e
, short circui
t
red on each
u
h
e cause sho
u
U
uld be shelt
e
V
arrays to
m
i
ons is requir
a
lled by the
s
p
rotection o
f
n
able a shut-
n
ductors and
t
o shut dow
n
e
nded on ev
e
of the invert
e
d
federal elec
current avail
and totally e
e
s
e
rs, protect t
h
t
or ground f
a
u
ngrounded
u
ld always b
e
ser Guide DLX UL
e
red from dir
e
m
inimize DC l
o
ed to satisfy
s
ystem instal
f
the PV syst
e
off from the
other syste
m
n
the inverter
e
ry current-c
a
e
r.
trical regula
t
able in the c
i
nclosed. All
d
h
ecircuit co
n
a
ult.
conductor.
e
determine
d
series L00410625-
0
e
ct sunlight,
o
sses.
the safety
ler in
e
m is
power sourc
e
m
componen
t
r
safely for
a
rrying
t
ions, and
i
rcuit.
d
evices mus
t
n
ductors and
d
before
01
e
t
s
t

User G
u
3.3.
2
•
T
h
e
or i
n
eq
u
• If t
h
7.2.
•
T
h
e
3.3.
2
• DC
loc
a
ind
e
•
T
h
e
ma
n
• DC
sys
t
Table
3
In
v
3.3.
2
•
T
h
e
an
d
• AC
u
ide DLX UL series
2
.1. Gro
u
e
GFDI prote
c
n
the PV con
d
u
ipped with
a
h
e ground fa
u
Table of Eve
n
e
rating of th
e
2
.2. DC F
u
f
uses protec
t
a
ted in the S
t
e
pendently.
e
rating of th
e
n
ufacturer,
U
f
uses are no
r
t
em installer.
3
.1: DC current c
h
v
erter Type
DLX 2.0 UL
DLX 2.9 UL
DLX 3.8 UL
DLX 4.4 UL
NOTI
C
Overcu
which i
s
string c
modul
e
2
.3. AC O
e
AC Overcur
r
d
the grid.
O
CD must b
e
CAU
T
T
o red
u
circuit
p
Nation
a
3.2 bel
o
L00410625-01
u
nd Fault
c
ts the negat
i
d
uctors. It is
l
a
finger-safe
f
u
lt current e
x
n
ts).
e
GFDI is 600
V
u
ses
t
the conduc
t
t
ringbox, eq
u
e
DC fuses sh
U
L requireme
n
r
mally not a
p
h
aracteristics an
Max
Curr
e
9.5
A
13.
5
18.
0
21.
0
C
E
r
rent protec
t
s
equal to 1.
2
onductors o
r
e
product lab
v
ercurre
n
r
ent Detecto
r
e
provided b
y
T
ION
u
ce the risk o
f
p
rovided wit
h
a
l Electrical C
o
w
Protectio
i
ve/positive
g
l
ocated in th
e
f
use holder.
x
ceeds 1A th
e
V
DC
and 1A.
t
ors from ba
c
u
ipped with
f
ould be as p
e
n
ts and NEC,
p
art of the sc
o
d recommende
d
DC
e
nt
1
x
A
5
A
0
A
0
A
t
ion is not re
q
2
5 x I
SC
,, from
r
the maxim
u
el.
n
t Protect
r
(OCD) prot
e
y
the system
f
fire, the inv
e
h
branch circ
ode, ANSI/N
F
n (GFDI)
g
rounded str
e
lower com
p
e
GFDI open
s
c
k feed curre
n
f
inger-safe fu
e
r the recom
with a maxi
m
o
pe of deliv
e
d
fuse ratings
x
PV String
Fuses
15A
22A
29A
33A
q
uired for PV
all sources c
a
u
m overcurre
ion
e
cts the sup
p
installer.
e
rter AC ter
m
uit overcurr
e
F
PA 70, and
h
ings from gr
o
p
artment of
t
s
and the inv
e
nts from par
a
se holders t
o
mendations
m
um of 40 A
.
e
ry, and mus
t
2x PV St
r
Fuse
s
8A
11A
15A
17A
strings whe
r
a
nnot excee
d
e
nt device siz
e
p
ly conducto
r
m
inals must
o
e
nt protectio
n
h
aving maxi
m
o
und faults i
n
t
he Stringbo
x
e
rter shuts d
o
a
llel strings.
T
o
disconnect
of the PV m
o
.
t
be provide
d
r
ing
s
3x
P
r
e the maxi
m
d
the ampaci
e
specified o
r
s between t
h
o
nly be conn
e
n
in accorda
n
m
um ratings
1
n
the PV arra
y
x
and is
o
wn (Refer t
o
T
hey are
each fuse
o
dule
d
by the
P
V String
Fuses
5A
8A
10A
11A
m
um current,
i
ty of the PV
n the PV
h
e inverter
e
cted to a
n
ce with the
as per Table
9
y
o

20
Table
3
I
n
3.3.3
Over
v
DLX
U
the
D
volta
g
• PV
s
DC
• Wh
e
sur
g
to
o
• Ref
e
de
v
• IEE
E
des
3
.2:
A
C current c
h
n
verter Type
DLX 2.0 UL
DLX 2.9 UL
DLX 3.8 UL
DLX 4.4 UL
Surg
e
.
v
oltage prot
e
U
Lseries are
e
D
C source cur
g
e surges to
s
ystems inst
a
and AC side
s
e
n the cond
u
g
e arrester.
O
o
btain the re
q
e
r to NEC gu
i
v
ices.
E
provides a
g
igned for ca
t
h
aracteristics an
d
Max A
208V
AC
10.0A
14.0A
18.5A
21.5A
e
Protec
t
e
ction is use
d
e
quipped wi
t
rent and the
g
round.
a
lled in an o
p
s
, as they can
u
ctors are ex
p
O
ne or more
s
q
uired level
o
delines for s
e
g
ood base fo
r
t
egory B: 100
d
fuse rating
C Current
240V
AC
8.5A
12.0A
16.0A
18.5A
t
ion
d
to prevent
v
t
h Temperat
u
AC output c
u
p
en or expos
e
act as lightn
p
osed to tra
n
s
urge arreste
o
f protection
e
lecting app
r
r
selecting k
A
kA – 150 kA
AC Fu
s
208V
AC
2
15A
20A
25A
30A
v
oltage surg
e
u
re protected
M
u
rrent, whic
h
e
d environm
e
ing rods.
n
sients, their
rs are neede
d
.
r
opriate kA r
a
A
ratings of t
h
per phase.
U
s
es
C
2
40V
AC
15A
15A
20A
25A
e
s through s
e
M
etal Oxide
V
h
diverts the
e
e
nt need ad
d
behavior lim
d
in installati
a
tings for ov
e
h
e surge arr
e
ser Guide DLX UL
Tripping
C
haracteristic
B or C
e
nsitive equi
p
V
aristors (TM
O
e
xcessive cu
r
d
ed protecti
o
its the effect
ons with lon
g
e
rvoltage pr
o
e
ster: The DL
X
series L00410625-
0
s Type
Double
Pole
p
ment. The
O
V) on both
r
rent from
o
n on both t
h
iveness of a
g
conductor
s
o
tection
X
UL series ar
e
01
h
e
s
e