Installation and start-up procedures 65

 

Procedure 15 - Parallel verification

 

 

 

 

 

 

Step

 

 

Action

 

 

 

 

 

1

 

It is recommended to leave the units functioning for at least 30 minutes

 

 

 

to reach full stability prior to final adjustment.

 

2

 

Turn all the DC breakers to the ON position.

 

 

 

 

 

3

 

Turn all the AC breakers to the ON position.

 

 

 

 

 

4

 

To achieve the system float voltage determined by the battery vendor or

 

 

 

the power engineer, increase the FLT potentiometer of the lowest current

 

 

 

rectifier, or reduce the FLT potentiometer of the highest current rectifier

 

 

 

to bring the system float voltage up or down respectively.

 

 

 

The system float voltage shall be read from the system’s meter voltage

 

 

 

reading.

 

 

 

 

Verify that the system float voltage level is constant while proceeding

 

 

 

through the next step.

 

5

 

The load share amperage for each rectifier must be equal. Adjust the

 

 

 

individual float potentiometer as needed to balance the current delivered

 

 

 

by each rectifier. It is recommended that the current from each rectifier

 

 

 

be at least 3 amperes (that is, 9 A for three rectifiers) for best operating

 

 

 

results.

 

 

 

 

 

–end–

 

 

 

 

 

 

Note:

Some rectifiers may still indicate an RFA (red RFA led).

 

 

 

 

A red RFA indicates a rectifier delivering less than 0.1 A.

 

 

 

 

Rotating the float potentiometer (FLT) slightly clockwise

 

 

 

 

will make the LED illuminate green.

Low voltage disconnect (LVD)

Testing and adjusting the LVD units (NT6C13FA/FH) (Circuit Pack

NT6C13PB Rel. 03).

To verify the LVA and LVD/LVDR operating levels on line, without disconnecting the load, proceed as indicated in Procedure 16:

25A Switch Mode RectifierNT5C06B / C Installation and User Manual

Page 65
Image 65
Emerson MPR25, MPR15 Series user manual Low voltage disconnect LVD

MPR15 Series, MPR25 specifications

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