PVI 3000S, 4000S, 5000S, 5300 Series Inverters
Installation and Operation Manual (Rev A)
21
Lightning and Surge Protection:
The inverter is designed with certain protections against surges in voltage including certification
to UL1741/IEEE1547 /CSA22.2#107.1 / FCC Part 15B (including ANSI/IEEE 62.41/62.42 as required
in the NY SIR), however added protection and solid grounding provisions are important for best
protection against utility surges and surges created by indirect lightning strikes.
The installation of a Type 1, UL Listed Lightning Arrestor is recommended on both the DC and AC
sides of inverter. Solectria Renewables, LLC and various distributors stock these arresters. They
can be installed on the outside of the wiring box or other locations in the system and wired using
the manufacturer's directions. This device gives important added protection from indirect
lightning strikes and resulting surges that provide protection beyond the inverter's UL1741
requirements. It is suggested to drive a ground rod specifically for the PV array. It is
recommended to install air terminals as part of the Lightning Protection System. These added
protections are especially important for areas prone to thunder storms and possible nearby
lightning strikes. Although these added precautions will not guarantee that there will be no
damage from lightning, they can help prevent or limit potential damage.
Grounding Electrode Conductor:
As with all PV systems, a Grounding Electrode Conductor must be installed per NEC 690.47 (and
250.166). This conductor should be sized according to these NEC requirements. This conductor
should be terminated on the labeled ground point located at the bottom of the wiring box where
the DC and AC equipment ground conductors also are terminated.
WARNING:
The main inverter enclosure should not be opened unless setting for positive
grounding or setting voltage configuration jumpers.
AC Voltage:
The PVI 3000S-5300 are grid connected devices, suitable for both 240V AC and 208V AC grid-
connected use. For example, connection to 2 phase legs of a 208V AC, 3-phase service (where
acceptable by code).
No unit (PVI 3000S, 4000S, 5000S, or 5300) can be used with just a 120V
AC connection
. The units are factory pre-set for auto-detect 240VAC and 208VAC when
connected with a neutral. They can also be configured for connection to either 240 or 208 VAC
without a neutral at the factory or by a qualified installer.
Multiple Units:
Multiple PVI 3000S-5300 units can be used at the same location/facility assuming all codes are
followed including NEC, local building codes and area utility guidelines. If multiple units are used,
each inverter should have its own dedicated circuit breaker, and a PV string must only be wired to
one inverter (although multiple PV strings can be used on each inverter up to unit ratings and
power levels).
