ZENER VARIDRIVE SOLUTIONS
ZENER ECODRIVE® 8000
IM00130
P a g e
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20/07/2018 3:59 PM
Input Power Wiring – PV and AUX AC Supply
The ECODRIVE can also operate from an auxiliary AC power supply such as GRID or generator supply. Refer to page 16 for
information on switching the auxiliary AC supply and ‘blending’.
A single ECODRIVE should be the only load connected to any particular solar array. Do not connect additional equipment of any
kind (including additional ECODRIVEs) to a solar array that is used to power ECODRIVE. Severe equipment damage may result.
DC Disconnect switch
The disconnector in the DC supply circuit must be rated to
switch the whole photovoltaic array current and rated to
switch the array maximum open circuit DC voltage at the
expected minimum temperature. A pole in each polarity is
required.
Blocking Diodes
Part No. AQ08300
When operating the ECODRIVE with a DC solar supply
and an auxiliary AC power supply, blocking diodes
must be installed in series with each string. They must
be rated 1600VDC and 1.4x Isc at STC..
PV Protection
Over current protection for the PV array is required in
addition to the DC disconnect switch. The circuit
protection must be rated and installed to comply with
all local codes and regulations.
Connect the AC supply to the terminals provided,
L1, L2 & L3 as shown below.
AUX AC Power Control panel
An external control panel with a disconnect contactor
is required to disconnect the Auxiliary AC power
supply when not required. The AC contactor control
circuit must be powered from 2 phases of the
Auxiliary AC supply. Additional controls may be
required for a generator supply.
Over current Protection
Fuse or circuit breaker protection is required if
DC input wiring is rated for less than 1.25x
array Isc at STC.
Isolation from Earth
Both sides (+ & - terminals) of the solar array MUST
be isolated from earth for systems using an auxiliary
AC supply.
