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3
3.
CONNECTION BETWEEN A ZHERO AND THE PHOTOVOLTAIC GENERATOR
INSTALLATION
Figure 1 - MPPT inlet hatch
The installation consists in connecting the cables coming from
the photovoltaic system to the pre-assembled MC4 of the
charge controllers, paying close attention not to reverse the
polarity.
To do this, remove the plate (Figure 1) by unscrewing the
appropriate screws of the plate. Once the plate has been
reinstalled and the cables brought inside the system, they can be
connected to the regulators via the MC4 photovoltaic connector.
According to the type of regulator installed, check that the
string voltage is between 90 - 150 V or 200 - 600 V.
ATTENTION
: It is necessary to install a PV unloader (SPD),
external to the machine, with Up index
Up ≤ 2.5 kV
.
4.
AC CONNECTION - A ZHERO TO MAINS DISTRIBUTOR/GENERATOR and "BACKUP"
Figure 2 - ZHERO terminal block connection
INSTALLATION
Connection of the distributor / genset network entering the
system (not production meter):
LG
: 230VAC DISTRIBUTOR / GENERATOR phase
NG
: Neutral DISTRIBUTOR / GENERATOR 230VAC
Yellow / Green terminal
: earth connection
Connection of the "backup" line (optional):
LC
: 230VAC Backup Phase
NC
: Neutral Backup 230VAC
Yellow / Green terminal
: earth connection
Connection of the production meter:
LO
: input phase to the production counter on the inverter side
NO
: neutral on inverter side counter input
LOO
: Output phase from the grid side production meter
NOO:
Neutral in output from the grid side production meter
In case of Off-grid application, a jumper must simply be made
between LOO and LO and between NOO and NO.