Emerson MPR15 Series User Manual

Page of 120
Installation and start-up procedures   63 
25A Switch Mode Rectifier
NT5C06B / C   Installation and User Manual
 
Note:
 
If the desired HVSD level is greater than the –57 V float 
limit, hold the FLT/EQL switch to EQL and use the 
EQL potentiometer to bring the float voltage to the 
desired HVSD level. Hold the switch through the 
following steps. 
Float voltage adjustment 
Note:
 
For installation where rectifiers can be connected to the 
charge bus (all rectifiers with DC breakers ON and 
remote sense leads connected) prior to final adjustment, 
Procedure 13 can be omitted and be performed in the 
“Parallel verification” procedure section. 
Procedure 13 - Float voltage adjustment 
Step Action 
Adjust the float potentiometer FLT to 0.5 volt DC (see Note below) above 
the desired float voltage determined by the battery vendor or power 
engineer, using the voltmeter attached to the test point (V+ V-). 
Final system’s float voltage adjustment will be performed as indicated in 
“Parallel verification” Procedure15, step 4. 
end–
 
Note:
 
The 0.5 volt DC extra does not apply to MPR25 rectifiers 
of a release above Rel: 30. 
Equalize voltage adjustment 
Procedure 14 - Equalize voltage adjustment 
Step Action 
Hold the equalize switch in the EQL position. 
While the switch is up, set the equalize potentiometer to 0.5 volts DC 
(see Note below) above the desired level determined by the battery 
vendor or power engineer, using the voltmeter attached to the test point 
(V+ V-). 
–end–
 
Note:
 
The 0.5 volt DC extra does not apply to MPR25 rectifiers 
of release above Rel: 30.