Outback Power Integration Guide

REV042920
SimpliPhi Power, Inc. | 3100 Camino Del Sol | Oxnard, CA 93030, USA | [phone] | [e-mail]| SimpliPhiPower.com
| 16 |
2. Apply the charger efficiency. If the charger converts AC Input power to DC Charging power at an
85% efficiency rate, then over 9,000 Watts AC can be used as the charger’s maximum AC Input.
7,680  
0.85
= 9,035.3  
3. Convert AC watts to AC current, by dividing AC watts by the inverter’s AC Voltage rating. The
OutBack Radian has a 240VAC output rating, but some other OutBack inverters are rated at
120VAC.
9,035.3  
240  
= .   
The OutBack Radian GS8048A has a maximum AC Input Charge Current of 30 Aac, lower than the
calculated 37.6 Aac maximum for the four-battery bank. Therefore, the Radian’s inverter/charger can
operate at its full 30 Aac-rated charger output without over-charging the PHI battery bank.
Typically, a properly sized PHI Battery bank will have a maximum charging current greater than the paired
inverter/charger’s maximum potential charging output. If a PHI Battery bank is under-sized relative to its
paired inverter, in addition to programming a lower inverter/charger charge limit, other additional
precautions must also be taken to protect the battery from over-discharge (refer to Section 3.1 – Sizing
for Maximum Instantaneous Discharge (Load Rate)).
PHI Batteries’ Maximum Charge Rates Table
Refer to either the “Amps AC at 240VAC” or the “Amps AC at 120VAC” column depending on the AC
Output rating of the inverter in use. Values are per battery; calculate the Charger AC Limit by multiplying
the per-battery value by the number of batteries. If necessary, round figures
down to the closest whole
number.
Table 2.0 – PHI Batteries’ Maximum Charge Rates
PHI Battery
Model
MAX
Continuous
Charge
Rate per
Battery
(ADC)
MAX
Continuous
Charge
Rate per
Battery
(Watts DC)
Watts AC
(assume
85%
Charger
Efficiency)
Amps AC Charge
Limit per Battery
at 240VAC
Amps AC Charge
Limit per Battery
at 120VAC
PHI 3.8-51.2V
nom
37.5 1,920
2,259
9.4
18.8
PHI 3.5-51.2V
nom
34 1,741
2,048
8.5
17.1
PHI 3.4-51.2V
nom
33 1,690
1,988
8.3
16.6
PHI 3.8-25.6V
nom
45 1,152
1,355
5.6
11.3
PHI 3.5-25.6V
nom
45 1,152
1,355
5.6
11.3
PHI 3.4-25.6V
nom
45 1,152
1,355
5.6
11.3
PHI 2.9-51.2V
nom
28.5 1,459
1,717
7.2
14.3
PHI 2.7-51.2V
nom
26 1,331
1,566
6.5
13.1
PHI 2.6-51.2V
nom
25 1,280
1,506
6.3
12.5
PHI 2.9-25.6V
nom
45 1,152
1,355
5.6
11.3