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Procedure 10-10 (continued)
Adjusting dc distribution shelf low voltage disconnect return
Action
Step
1
2
3
Table 10-14
LVD/LVDR events
If the event that happens while you are
adjusting the TST ADJ potentiometer is
The LVD LED extinguishes before reaching
-50.5 ± 0.2 V dc
The LVD LED does NOT extinguish before
reaching -50.5 ± 0.2 V dc
The LVD LED illuminates at -50.5 ± 0.2 V dc
4
5
6
AccessNode Series 800A Outside Plant Cabinet Installation 323-3001-210 Issue 1.0
Adjusting the rectifier and the dc distribution shelf 10-31
Action
Ensure that the LVD BYP/NORMAL switch is set to the BYP position.
CAUTION 1
Power loss hazard
Do not switch the NORMAL/BYPASS switch back to the
NORMAL position if the LVD/LVDR potentiometers are
readjusted and their adjustments are not completely
verified. This can cause loss of power to the load.
Slowly turn the TST ADJ potentiometer clockwise until the LVA LED
extinguishes at -47.0 ± 0.4 V dc.
Note: The LVA threshold has been set as per Procedure 10-8 on page 10-26.
Slowly adjust the TST ADJ potentiometer clockwise until one of the three
events shown in Table 10-14 occurs.
Slowly adjust the TST ADJ potentiometer counterclockwise until the LVD LED
illuminates.
Slowly turn the LVDR potentiometer clockwise 1/2 turn.
Go to step 3.
—continued—
Then perform these steps
go to step 4.
go to step 7.
go to step 8.
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