Lucent Technologies Lineage 2000 J85503B-2, Руководство по эксплуатации продукта

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Lucent Technologies Lineage
®
2000 200A Ferroresonant Rectifier J85503B-2
3 - 2 Engineering and Ordering Issue 8 January 1999
Figure 3-1 illustrates some general bounds on sizing rectifiers
for recharging batteries. With other conditions fixed, it
illustrates three generalities.
As the reserve time of batteries increases, so does the recharge
factor required for a given recharge time.
Some minimum recharge factor is required to effectively
recharge the batteries.
Continuing to increase the recharge factor will not materially
reduce the recharge time.
Redundant and non-redundant systems
The recharge factor (1.2 to 1.6) multiplied by the abh current
drain gives the minimum installed rectifier capacity (mirc) for
any plant.
mirc = abh x recharge factor
The mirc is also the sum of the abh and the recharge current. For
example, a 1.2 recharge factor in a plant with an abh current
drain of 100 amperes simultaneously allows 100 amperes for
plant load, and 20 amperes for battery recharge in 24 hours,
following a 3-hour discharge period.
The mirc value of current is a requirement of either a redundant
or a non-redundant rectifier system. It is the only requirement
M
Figure 3-1: Recharge Time vs. Recharge Factor
1.0
12 16 20 24 28 32 36 40 44 48
Hours to 95% Charge
Recharge
Factor
1.1
1.2
1.3
1.4
1.5
1.6
3 4 Hours Reserve 5 6 7 8