Installation
and
Operation
Manual
(Rev
A)
PVI
50
‐
100KW
Series
Inverters
DOCR
‐
070233
Page
30
of
92
4.8
Lightning
and
Surge
Protection
The
inverter
is
designed
with
certain
protections
against
voltage
surges
in
accordance
with
IEEE
1547.
The
DC
inputs
are
equipped
with
IEC
61643
‐
1/
‐
11
Class
II,
EN
61643
‐
11
Type
2
surge
protection
devices
(SPD).
The
SPD
helps
protect
the
inverter
from
surges
by
creating
a
temporary
low
impedance
path
to
ground.
On
the
DC
input,
separate
surge
paths
exist
from
positive
(+)
to
ground
and
negative
(
‐
)
to
ground.
Each
path
is
made
by
a
separate
insert
within
the
SPD.
A
red
indicator
flag
will
mark
that
an
insert
requires
replacement.
The
SPD’s
can
are
installed
inside
the
DC
disconnect
switch.
Added
protection
and
proper
grounding
provisions
will
help
protect
against
utility
surges
and
surges
created
by
indirect
lightning
strikes.
In
some
instances
surge
and
lightning
can
damage
the
equipment.
Please
review
the
warranty
section
for
details.
4.9
Remote
Shutdown
and
Revenue
Grade
Meter
Terminals
The
PVI
50
‐
100KW
provides
dedicated
terminal
blocks
for
customer
connections
for
remote
shutdown
and
an
RS
‐
485
based
revenue
grade
meter.
The
terminal
blocks
are
found
on
a
separate
DIN
rail
located
on
the
left
wall
of
the
inverter
as
shown
below:
Figure
4.7
Location
of
Customer
Connections
DIN
rail
with
Customer
Terminal
Blocks
