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9-16 Replacing the low-voltage disconnect unit
Procedure 9-5
Adjusting the load sharing
Use this procedure to verify and readjust the modular business package (MBP)
rectifier load sharing to within 0.1 A.
Requirements
There are no specific requirements for performing this procedure.
Tools and materials
The following tools are required:
•
•
Documentation references
Equipment Installation Operation and Maintenance for MPR25/MPR15
Series Single Phase –48 V, 25 A Switch Mode Rectifier NT5C06,
169-2071-500
Table 9-2 shows the Nortel Networks recommended rectifier settings for
Johnson Control 12/125 batteries. These settings are referenced throughout the
procedure.
Table 9-2
Rectifier adjustment settings
Battery
manufacturer
Johnson Control
AccessNode P0904244 Issue 1.0
slotted screwdriver (small, 0.1 in. blade)
Fluke 8050A rms voltmeter (or equivalent)
High-voltage
shutdown (HVSD)
–56.0 ± 0.1
Equalize
(EQL)
–55.0 ± 0.1
—continued—
Float
(FLT)
–54.5 ± 0.1
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