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8-26 Testing the batteries and rectifiers
Procedure 8-7 (continued)
Load sharing adjustments for replacement rectifiers
Action
Step
1
2
Table 8-5
Rectifier load sharing adjustments
If the
And the number
RFA LED
of rectifiers
indication is
installed is
Only one RFA
two or three
LED is
illuminated
GREEN
Only two RFA
three
LEDs are
illuminated
GREEN
All installed
any number of
rectifier RFA
rectifiers
LEDs are
illuminated
GREEN
3
4
AccessNode P0904244 Issue 1.0
Action
Examine all rectifiers for the status of the RFA LEDs.
Perform the load sharing adjustment steps shown in Table 8-5.
Table 8-5 lists the RFA LED indications and the associated steps to coarsely
adjust the load sharing of multiple rectifiers.
The indication
means
that the rectifier with
the GREEN RFA
LED is floating
slightly too high
that the rectifier with
the RED RFA LED is
floating slightly too
low
that the rectifiers are
sharing the load
closely
Repeat from Step 1 until all rectifiers RFA LED are illuminated GREEN.
Examine and compare the display of the ammeters on the rectifiers.
Note: Nortel Networks recommends that the ammeters of all installed
rectifiers read within 0.1 A of each other for proper load sharing.
—continued—
Then perform these steps
Slowly and very slightly adjust the FLT
potentiometer of the rectifier that has
the RFA LED illuminated GREEN
counterclockwise until the RFA LEDs
of at least one of the other rectifiers
illuminate GREEN.
Go to step 3.
Slowly and very slightly adjust the FLT
potentiometer of the rectifier that has
the RFA LED illuminated RED
clockwise until the RFA LED
illuminates GREEN.
Go to step 3.
Go to step 4.
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