Zener ECODRIVE 8000 Installation Manual Supplement page 16

ZENER VARIDRIVE SOLUTIONS
Input Power Wiring – PV Only
This manual should be read in conjunction with the ZENER 8000 instruction manual and all applicable standards and regulations.
This equipment and other components that are part of the system must also be installed as per the manufacturer's
recommendations and any applicable standards and regulations.
The following is an overview of power wiring for a Solar Only operation:
Blocking Diodes
For PV only systems blocking diodes are optional
but can provide benefit to solar only installations
with multiple PV strings. See Page 15 for detail.
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.
Solar PV Input Wiring
The ECODRIVE has two terminals to connect the DC supply from the Solar Array. These are labelled
DC+ and DC-. Always check and measure that wiring is correct and insulation tests satisfactorily
completed before connecting to the ECODRIVE. 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.
If the ECODRIVE is to operate from an auxiliary AC power supply, blocking diode(s) must be fitted. Refer to page 15 for
details. With standalone solar installations, blocking diodes are optional but recommended with multi-string installations
to ensure maximum efficiency where partial shading of the PV modules may occur.
IM00130
ZENER ECODRIVE® 8000
Fuse or
c/breaker
See Page 17
P a g e | 14
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.
PV Protection
Overcurrent protection for the PV array is
required in additional to the DC disconnect
switch. The circuit protection must be rated
and installed to comply with all local codes and
regulations.
PV Circuit Protection, isolation
switches, lightning arrestors and other
devices.
20/07/2018 3:59 PM