2.2 Ground Requirements
The Ingecon
®
Sun equipments have to be integrated in a permanently
grounded electrical system conforming the provisions of the National
Electrical Code ANSI / NFPA 70 and any other statal or local code
requirements.
2.3 System Neutral Requirements
The INGECON
SUN 15 U 208V and INGECON
SUN 15 U 480V are
designed to be installed to four-wire systems (3 neutral) with 208
V line-to-line.
The INGECON
SUN 25 U 208V and INGECON
SUN 25 U 480V are
designed to be installed to four-wire systems (3 neutral) with 480
V line-to-line.
It’s mandatory to connect the neutral wire.
2.4 Electrical Diagrams
INGECON
SUN 15 U 208V
INGECON
SUN 15 U 480V
PV Input
Fused
disconnect
switch
DC voltage
surge arresters
Inverter
Transformer
Contactor Breaker
AC voltage
surge arresters
3 X 208 Vac
60 Hz
3
+
-
Neutral
N MOV’s
One of the two
fuses has to be
installed
Enclosure and other
metal parts, always
Grounded.
Only the hot pole
have the fuse
installed
PV Input
Fused
disconnect
switch
DC voltage
surge arresters
Inverter
Transformer
Contactor Breaker
Fuses
AC voltage
surge arresters
3 X 480 Vac
60 Hz
3
+
-
Neutral
N MOV’s
One of the two
fuses has to be
installed
Enclosure and other
metal parts, always
Grounded.
Only the hot pole
have the fuse
installed
Installation and Operation Manual
INGECON
®
SUN SMART U
AAS2000IKI05
AAS2000IKI05
Rev. _
Date: February 2011
Page 25
