REV020918
SimpliPhi Power, Inc. | 420 Bryant Circle | Ojai, CA 93023, USA | (805) 640-6700 | info@simpliphipower.com |
SimpliPhiPower.com
| 13 |
PHI Batteries feature a Low Battery Voltage Cut Off (LBCO). This is a self-protection mechanism that
prevents over discharge. The LBCO will cause the battery to turn off once batteries approach Zero
Capacity or 100% Depth of Discharge.
Most, if not all, inverters have related features. These features are often referred to as “Load Disconnect”,
“Load Shedding” or similar. These features are there to protect the battery bank from excessive
discharge. In instances of low battery voltage, when there is no incoming energy to recharge the battery
bank, the inverter will disconnect the load and remain in standby until the battery bank is recharged.
For Off Grid installations, where charge energy is only provided by PV arrays, Inverter “Load Disconnects”
are generally set at a value that will allow a system to remain online and in standby for at least 24 hours
(10% at top of charge and 10% at bottom of charge). This allows a system to stay online until at least one
full day of sun can recharge the battery bank.
In any application, off-grid or grid-tied, if your PHI 3.5 battery bank is reaching the LBCO, load
disconnects or load shedding set points may need to be adjusted. Refer to (Operating Parameters per
Warranty).
In case of LBCO, cycle the DC Battery Disconnect (inverter), in order to reset the system. Only complete
this procedure when there is a charge source available, otherwise, the system will simply reach LBCO in
a short time period and shut down again.
Section 4.0 – Operating Parameters Per Warranty
Although SimpliPhi batteries are capable of performing at very high rates and depths of discharge within a
very wide temperature range, in order to achieve extended life cycles and to comply with the Warranty,
the Warranty conditions the recommended operating parameters, indicated in Tables 3.0 and 4.0 below,
must be adhered to.
Table 3.0 – Warranty Operation Parameters
Recommended Operating Conditions for 10 Year Warranty
Equivalent to 80% Retained
Capacity
10,000 cycles
5,000 cycles
3,500 cycles
Discharge/Charge Rate
1,2
C/2
DoD
4
80%
90%
100%
Operating Temperature °F (°C)
32 to 110 (0 to 43)
32 to 120 (0 to 49)
32 to 120 (0 to 49)
Programming Settings for
Ancillary Equipment
24V
48V
24V
48V
24V
48V
Absorb / High Cut-Off Voltage
(V)
3
28
56
28.8
57.6
28.8
57.6
Recharge / Low Cut-Off
Voltage (V)
3
25.1
50.2
24.8
49.6
24
48
