STANDARD OPERATING PROCEDURE
String Inverter Installation – Zeverlution Series
Version 1.2 Effective date 02/08/2017
Page 9 of 15
5.
If the connector’s clamping bracket was locked
prematurely (refer to step 3), it can be opened
using a 3.5mm flat bladed screw driver
Equipotential Bonding
Equipotential bonding is required for all parts of the solar array. The cross section of each earth
conductor should be equal or greater than that of the DC cable conductor size. The earth cable
must be continuous from the array to the earth bar in the switchboard the inverter is connected to.
Run all conductors bundled in the same conduit.
solarcity policy is that the earth conductor must be bonded to every rail in each row or column of
the array using the supplied proprietary earth lugs.
Roof Penetration
Subject to the roof type the PV array is installed on, an appropriate roof penetration kit must be
used. Roof penetrations must always be located under the solar panels where an attic space is
accessible for the cable run.
Where cable(s) pass through the roof penetration, it must be protected using rigid conduit.
Rooftop Isolator
A rooftop isolator is
not
required. Refer to section 4.4.1.6 of AS/NZS 5033:2014 for details
.
The
output cabling of the array must be labelled as follows:
“The inverter DC isolator must be in ‘Off’ position before isolating the PV array”
5.3.2
TS4-R-O Optimiser installation
Where strings are split across two roofs with different orientations or roofs with different pitch,
optimisers must be partially deployed in the string (see 5.1.2). solarcity will specify the design and
optimiser deployment prior to the installation. Follow the below instructions to retrofit optimisers
to the module.
1.
Looking at the back of the panel, push
the optimisers into the upper right
corner at the backside of the module
frame as depicted. Make sure the unit is
pushed all the way in.
