Hallberg-Rassy KEWA, Руководство пользователя

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KEWA Manual © Copyright 2016 Page: 58
58
Discover Battery Capacity (old batteries; replaced with Lifelines)
Getting the charging profiles configured properly and functioning adequately requires
some attention to set up and monitoring.
Deep cycle batteries generally shouldn’t be discharged more than 50% of total amp hour
capacity. When charging a battery to its full capacity, the last 15% of the charging is
very inefficient (takes a long time). Therefore, when in a regime of charging utilizing the
genset or the engine and running either for the sole purpose of charging the batteries, it is
recommended that a battery bank be discharged to 50% of its capacity and then recharged
only to 85% of its capacity. Charging back to 100% is fine but takes excessive genset
hours or engine hours to achieve the final full charge. Per Lifeline documentation, the
Lifeline AGM batteries should be recharged to 100% capacity every 5 to 10 discharge
cycles to preserve batter capacity. Also, if the batteries are occasionally discharged more
that 50%, it generally is not damaging to the battery as long as the battery is recharged
the same day.
For KEWA’s Lifeline house bank, assuming the batteries are in good shape, following
the Efficient Recharging Regime outlined in this section results in 147 amp-hours of
routinely usable 24V capacity:
•
Batteries can be discharged until the amp-house meter reads: –210
•
Then should be charged until the amp hour reading is: –63
KEWA DC Power
10/15/2006
Amp Hours
Battery Amp-Hrs
Battery
Voltage Qty
Configed
Volts Total 50% 35% 85% 15%
24v Service EV4DA 245 12 4 24 490 245 171.5 416.5 73.5
12v Service EV8DA 290 12 1 12 290 145 101.5 246.5 43.5
Starting EV31A 114 12 1 12 114 57 39.9
Charging Example
Capacity
Beginning
capacity
- amps
used
=discharged
balance
=%
charged
@ 85%
charged
490 416.5 171.5 245 50% 416.5 171.5 amp needed to hit 85%
-73.5 target reading @ 85% chg'd
290 246.5 101.5 145 50% 246.5 101.5 amp needed to hit 85%
-43.5 target reading @ 85% chg'd
Charging
7/6/2010
BULK ABS FLOAT Comments
24v Lifeline - Min 26.4
Lifeline - Max 26.8
Alternator 28.8 28.4 26.8 Custom programmable
Charger 28.8 28.8 27.0 Existing MV as config'd
12v Recommended - Min 13.2
Recommended - Max 13.4
Alternator ? How did scullion set this up ?
Charger 14.4 14.3 13.8 New MV 35a; @ gel setting
28.4
28.8
14.2
14.4