SimpliPhi AccESS Installation Manual

REV110619
SimpliPhi Power, Inc. | 3100 Camino Del Sol | Oxnard, CA 93030, USA | [phone] | [e-mail] | SimpliPhiPower.com
| 44 |
In an AC Coupled system setup that includes a generator, using a transfer switch for a grid-or-generator
connection to the Sol-Ark’s Grid Input also frees up the Sol-Ark Generator Input for connection to the AC
Coupled solar PV array.
If the system includes both a generator and a grid connection, limiter sensors are required. While smaller
generators (less than 10 kW) can be wired to the Sol-Ark’s Generator Input, Sol-Ark recommends wiring
larger generators to a whole home transfer switch instead of using the inverter’s Generator Input.
Smart Load
The Smart Load feature allows the homeowner to run higher power non-essential appliances (hot water,
dehumidifier, heat pump, irrigation pump, etc.) on solar when excess solar power is available. This setup
involves connecting these higher power non-essential loads to the Sol-Ark’s Generator Input. To partially
protect the batteries against over-discharge, set the Smart Load Off Batt and Smart Load ON Batt
parameters to the batteries’ acceptable SoC percentage range while in this mode. However, note that no
programmable parameter exists to regulate the batteries’ over-discharge from a current perspective.
For example, an off-grid system with home loads totaling a maximum instantaneous power draw of 8 kW
might include 5 PHI 3.8 batteries, with a maximum combined continuous power output of 9.6 kW
DC
/ 9.168
kW
AC
. With both the Smart Load and Limited to Load modes enabled and the Smart Load ON Batt
parameter set to 100% SoC, the Sol-Ark will begin powering the Smart Loads (in addition to all the home
loads) when the batteries are at 100% SoC. If the Smart Load power draw exceeds 9.168 kW
AC
, (38.2
Amps at 240VAC), the batteries will then be operating beyond their maximum continuous power output
capabilities. While the batteries have a maximum surge discharge capability of 60 Amps DC per battery
(15.36 kW
DC
/ 14.669 kW
AC
for the 5-battery bank), the batteries cannot surge at this power level for more
than 10 minutes. A Smart Load drawing more than 9.168 kW
AC
for more than 10 minutes will very likely
result in the batteries’ SoC level reaching the Smart Load OFF Batt parameter, if it is set to 95%. However,
feel free to reach out SimpliPhi Power Technical Support ([e-mail]) if the Smart
Load feature will be used and battery bank sizing clarification according to Smart Load-specific loads needs
to be clarified.
Note that in a grid-connected system that utilizes the Smart Load feature, the Wattage value to the right of
the Smart Load ON Batt parameter in the Smart Load menu tab (see Figure 5) represents the minimum
power required of the solar PV array before the Smart Loads are powered. Therefore, that Solar PV Wattage
value can be added to the battery bank’s maximum output power rating when comparing maximum
available solar and battery power available, against the Smart Load power draw: 
󰇛

󰇜


󰇛

󰇜
 󰇛󰇜.
CAUTION: Smart Loads’ maximum power draw cannot exceed the Generator Input breaker’s 40
Amp / 240VAC rating.
6.0 – SimpliPhi Technical Support
For technical support related to your AccESS, please contact us as follows:
805.640.6700
[e-mail]