PVI
23TL
&
PVI
28TL
Installation
and
Operation
Manual
PVI
Series
Inverters
DOCR
‐
070365
‐
E
Page
7
of
57
1.0
Introduction
The
PVI
23TL
and
28TL
are
commercial,
dual
MPPT,
three
‐
phase
utility
‐
interactive,
transformerless
PV
inverters
designed
to
be
interconnected
to
the
electric
utility
grid.
The
inverter
is
listed
for
use
with
ungrounded
PV
arrays
only.
By
following
this
manual,
the
inverter
can
be
installed
and
operated
safely.
This
installation
guide
is
used
as
a
reference
for
commissioning
and
as
a
guideline
on
how
to
use
the
inverter
most
effectively.
This
inverter
is
a
transformerless
type
without
galvanic
isolation.
Therefore,
the
inverter
may
only
be
operated
with
ungrounded
PV
arrays.
Furthermore,
the
PV
array
must
be
installed
in
accordance
with
NEC
690.35
(Ungrounded
Photovoltaic
Power
Systems)
and
local
regulations
for
ungrounded
PV
arrays.
Additionally,
the
PV
array
(PV
modules
and
cabling)
must
have
protective
insulation
and
the
PV
modules
used
must
be
suitable
for
use
with
this
inverter.
The
PVI
23
‐
28TL
includes
key
product
protection
functions,
such
as:
Anti
‐
Islanding
Protection
DC
Arc
‐
fault
Circuit
Interruption
Protection
Against
Reverse
Polarity
Short
Circuit
Protection
Monitoring
DC
Input
Insulation
Against
Ground
Monitoring
AC
Output
Voltage
and
Frequency
Monitoring
Leakage
Current
Against
Ground
(GFCI)
Monitoring
DC
Injection
from
AC
Output
DC
Input
and
AC
Output
Over
‐
voltage
Protection
DC
Input
Over
‐
current
Protection
Monitoring
Ambient
Temperature
Monitoring
IGBT
Module
Temperature
Wide
‐
range
Frequency
and
Voltage
Support
The
inverter
is
suitable
for
use
indoors
and
outdoors.
It
meets
the
requirements
of
ANSI/NFPA
70,
NEC690.5,
UL
1741,
IEEE
1547,
and
IEEE
1547.1
for
the
parallel
operation
of
power
generation
plants
on
low
‐
voltage
networks
of
regional
electrical
utility
companies.
The
function
of
the
Anti
‐
Islanding
protection
complies
with
UL
1741/IEEE
1547
specifications.
The
Anti
‐
Islanding
function
guarantees
secure
disconnection
in
the
case
of
circuit
isolation
or
interruptions
in
power
supply
while
also
protecting
against
isolated
operation.
A
DC
arc
‐
fault
circuit
interruption
is
integrated
into
the
PVI
23
‐
28TL
inverter
and
complies
with
the
requirement
of
a
Type
1
device
in
the
UL
1699B
standard.
Содержание PVI 23TL
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