Installation Manual: 22.8kWh

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3.0 – Pre-Installation

The information within this section covers pre-installation procedures & considerations, namely, PHI 3.8

battery performance parameters to be aware of during the design process, guidance on system sizing, as well as

installation site requirements and pad mounting.

3.1 – PHI 3.8 Battery Performance Parameters and

Sizing Calculations

The PHI 3.8 batteries within the Sol-Ark AccESS are designed to operate at a continuous discharge rate of 11.4

across a large operating temperature range, as seen in Table 1.0 above. The SimpliPhi AccESS does not

require an increase in sizing nor any special compensations when determining the size of the energy storage

and management system under the circumstances and conditions seen in Table 1.0 above. Each AccESS unit

comes pre-programmed to maximize the performance of the PHI 3.8 battery bank. Settings are password

protected and require access to the lockout password by a qualified installer for modification.

PHI 3.8 batteries within the AccESS unit do not need to be de-rated unless running continuously at more than

90% capacity, at temperatures below 0° C, or above 45° C. To achieve higher, warrantied cycles of 10,000, the

PHI 3.8 batteries are operated at 80% maximum Depth of Discharge (DOD). The AccESS comes pre-

programmed for 80% DOD. Please contact SimpliPhi Power Technical Support if alternative settings are

desired. Please also refer to operating temperatures and inverter settings in this Manual’s Programming

section.

3.1.1 – Design Parameters: Maximum Sizing Guidelines

Below are the maximum sizing guidelines for installations of the AccESS:

• Maximum AC Grid input / output OCPD = 50 A double-pole

• Maximum DC coupled PV array = 13 kW

(per Sol-Ark-12K)

• Maximum AC coupled PV array = 9.6 kW

(per Sol-Ark-12K)

3.2 – System Sizing for Your Installation

The number of PHI 3.8 batteries within the AccESS unit(s) should be specified in terms of total rated storage

capacity and instantaneous power rating before the initial installation based on the goals and objectives of the

project. All PHI 3.8 batteries are balanced during final production and testing stages. Following proper wiring

guidelines ensures that a system will not require any manual balancing processes.

CAUTION: Do not combine PHI 3.8 batteries with other brands or chemistries.

CAUTION: Do not mix PHI 3.8 batteries from different installations, clients or job sites.

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