AmpliPHI Sol-Ark Integration Guide

For example, one AmpliPHI battery has a maximum continuous discharge rate of 37.5 Amps DC. The AmpliPHI

battery communicates this value to the Sol-Ark and auto-populates the Sol-Ark’s Max A Discharge parameter

to this value. When 45 Amps DC (120% of 37.5 ADC) are discharged from the battery to the loads (equivalent

to a ~9 Amps at 240 VAC load), then the system will shut down.

AmpliPHI 3.8 Battery

Rated kWh Capacity per Battery

3.8 kWh DC @ 100% DoD

3.04 kWh DC @ 80% DoD (recommended)

MAX Continuous Discharge Rate

37.5 Amps DC (1.9 kW DC)

*Multiply by the number of AmpliPHI batteries in the battery bank for total capacity and power ratings.

Note: In a DC Coupled system, the AmpliPHI battery’s maximum charge rate (37.5 Amps DC, or 1.9 kW DC)

need not be considered when sizing the AmpliPHI battery bank. DC coupled photovoltaic (PV) connected

via the Sol-Ark’s charge controllers will limit charging current based on the Sol-Ark’s Max A Charge setting

without issue.

Charge Example: 

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• AC Coupled Solar PV Array is rated at 8 kW

• PHI 3.8 kWh-51.2V

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battery has a maximum continuous charge rate of 1.92 kW

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properly sized PHI battery bank based on the maximum charge from the AC Coupled solar PV array has a

minimum of 6 batteries. This helps ensure that the battery bank receives as much charge as possible from the

AC Coupled solar PV.

CAUTION: USING FEWER THAN THE CALCULATED NUMBER OF PHI BATTERIES IN THIS

AC COUPLED CHARGE CALCULATION MAY RESULT IN LIMITEDLY EFFECTIVE CHARGING

FROM AC COUPLED PV IN OFF-GRID OR GRID-OUTAGE CONDITIONS. WHEN THE

OUTPUT OF THE AC COUPLED SOLAR PV ARRAY EXCEEDS THE MAX A CHARGE

PARAMETER, AND FREQUENCY SHIFT IS UNABLE TO MITIGATE THE OUTPUT, THE

BATTERY CHARGING WILL BE INTERRUPTED. TO AVOID THIS, PV ARRAY SIZING NEEDS

TO BE ADJUSTED TO ACCOMMODATE THE MAX A CHARGE PARAMETER FOR THE

OVERALL SYSTEM.

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