Introduction
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PV compatibility The inverter is designed to take advantage of solar modules configured as high-
voltage PV string arrays—single crystalline, poly crystalline, or thin film—with
an input voltage Maximum Power Point range (depending on inverter model) of
195 to 550 Vdc, 240 to 550 Vdc, 240 to 480, or 200 to 400 Vdc. See “Electrical
Specifications” on page A–2 for more information.
Utility grid
compatibility
The inverter can operate on either 240 V or 208 V nominal grid voltage. The
inverter senses the phase-to-phase voltage and automatically changes the power
limit value for each grid voltage. The disconnect thresholds (see “Adjustable
Voltage, Frequency and Reconnection Settings” on page A–10) remain the same
because both nominal voltages have the same 120 Vac phase-to-neutral
thresholds.
Maximum Power
Point Tracking
(MPPT)
The inverter uses a proprietary Maximum Power Point Tracking (MPPT)
technology to harvest the maximum amount of energy from the solar array. MPPT
learns your array’s specific characteristics, maximizing its output at all times.
High efficiency The high-frequency, solid-state design of the inverter is extremely efficient. See
Appendix A, “Specifications” for the efficiency ratings of each model.
Expandable Multiple inverters may be networked together for increased net metering capacity
or future system growth. The inverter has adjustable voltage and frequency
disconnect settings and can be aggregated above 30 kW on a single point-of-
common-coupling (PCC). See “Adjustable Voltage, Frequency and Reconnection
Settings” on page A–10.
Standard Features
The inverter has the following standard features:
• Sealed inverter section protecting power electronic components;
• Liquid Crystal Display (LCD) providing easy-to-read system status and daily
cumulative energy production information;
• Two LED indicator lights providing status and ground fault indication;
• Wiring/disconnect box providing protection for all AC and DC connections
and eliminating exposed “live” wiring if the inverter is removed.
The wiring/disconnect box has been designed to be physically mated to the
electronics section of the SunPower Inverter at the factory, but remains in
place as a non-serviceable item in the event that the inverter electronics
section is ever required to be removed. The inverter and wiring/disconnect
box together form an NEMA 3R enclosure to allow outdoor installation.
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