AAS2000IKI01
31
Installation manual
Ingeteam Power Technology, S.A.
•
Connecting the 230 V auxiliary supply (optional depending on the model and kit included)
CAUTION:
As long as the panels are exposed to the light, the DC cables will carry potentially dangerous voltage
levels.
Never handle the connections before disconnecting the inverter from the grid and the PV array.
5.4.3. Order of connecting the unit
The basic connections to be made with the Ingecon
®
Sun Power units are as follows, in this order:
1.
Connecting the insulation failure detection switch (optional)
2.
Communication line (optional)
3.
Connecting the various grounding connections
4.
Connecting the auxiliary supply (optional depending on the model and kit included)
5.
Connecting the 3-phase inverter system to the power grid
6.
Connecting the DC cables from the PV array
The following sections describe how to make these connections.
5.4.4. System wiring diagram
Units with a transformer
3
P
V i
np
ut
Fused circuit breakers
Inverter
Contactor
AC surge arresters
DC surge arresters
Thermomagnetic
3 x 4
0
0 V
ac
5
0 / 6
0 H
z
Units without a transformer (TL)
P
V i
np
ut
Fused circuit breakers
Inverter
Contactor
AC surge arresters
DC surge arresters
Thermomagnetic
3
-p
ha
se
n
et
wor
k I
T
3
5.4.5. Insulation fault contact / grid connection indicator
The inverter incorporates a normally open volt-free auxiliary contact. It can be used for one of two functions:
•
Detection of insulation fault in the DC circuit.
Open contact: there is no insulation fault in the DC circuit.