BYD COMPANY LIMITED
Rev. 21.12 2018
Document
Installation Manual and User Manual for BYD
Project No.
\
Code
2M SOP0007540
Edition
13
Page
15 / 30
15
regional and national safety and electricity standards. If grounding is
required, use a recommended connector type, or an equivalent, for the
grounding wire. The grounding wire must be properly fastened to the
module frame to assure adequate electrical connection.
(3) There are many possible methods for grounding. The main point
is to ensure the resulting safety. We recommend one method as
sketched below:
FIG. 14 Ground diagram
(4) All module frames should be grounded for safety. All materials
for grounding connections between modules must be approved by a
qualified electrician and also, the grounding itself must be done by a
qualified electrician. The ground wire should have at least the same
size as the electrical conductors(10-12 AWG exposed copper wire with
a minimum of 90°C is recommended).
(5)In order to avoid potential induced degradation
（
PID
）
,BYD
insists that the negative electrode of the inverter should be grounded.
CAUTION:
BYD modules provide the mounting holes, drain
holes and grounding holes. That has passed the safety testing.
Installers can’t drill and block
drain holes at
random.
3.3.2 General Installation
(1)The module was rated for use in the A application class which
follows the items referred in IEC 61730-1.When the modules in a PV
system are connected in series or parallel generally, we recommend
simple methods of connecting them in series or parallel as shown
below:
Series connection of modules:
Parallel connection of modules:
