Emerson 200I/48-NT5C05C user manual Adjusting the equalize voltage EQL, Adjusting the slope share

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Operation 47

Procedure 9 - Starting up the rectifier ( continued )

Step

Action

Adjusting the float voltage

14Ensure that the EQL / FLT switch is on the FLT position.

15To adjust the float voltage to the proper level, turn the FLT potentiometer clockwise to increase the voltage or counterclockwise to decrease it.

Adjusting the equalize voltage ( EQL )

16Set the EQL / FLT switch to EQL. Turn the EQL potentiometer clockwise to increase the voltage or counterclockwise to decrease it.

17Put the FLOAT / EQL switch in the FLOAT position.

Adjusting the slope share

18Select the slope share mode by setting the two bottom DIP switches to SLS ( see Figure 10 ). Verify that the rectifier displays the required float value. If required, adjust it with the FLT potentiometer.

19Connect the sense leads by inserting the RC fuse in the controller or by reconnecting the control cable.

20Put the dc breaker located on the front of the rectifier to ON.

21The rectifier is now connected to the system and should carry some current. If it is connected in parallel with other rectifiers, verify that the total system current is shared equally amongst the rectifiers. Put the switch on each rectifier to AMP. Find the mean current of the rectifiers by adding all the currents measured on each rectifier and dividing the total current by the number of rectifiers

IT = I1 + 12 +I3 … + In

n n

Set the current from each rectifier to this mean value. If the current reading of one of the rectifiers is too low, or is 0, slowly increase the current by turning the FLT potentiometer clockwise until proper sharing is achieved. If the current reading is too high or if rectifier is in the current limit mode, turn the FLT potentiometer counterclockwise.

Note : Adjust all the rectifiers in sequence to the mean value of the currents, and readjust more precisely if necessary.

Verifying the current limit

22

Turn OFF some of the other rectifiers to force the rectifier under test to pick up a load current of at least 210 A. When the rectifier reaches about 205 A, the yellow CL LED should light up.

 continued

Emerson Energy Systems

Rectifier 200I/48 NT5C05C Installation and User Manual

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Contents Helios Modular Switch Mode Rectifier 200I/48 NT5C05C Page Emerson Energy Systems Page Publication history This page is left blank intentionally Contents List of Tables List of ProceduresList of Figures Ac female plug in a 1200 a cabinet This page is left blank intentionally Purpose of this manual General informationTypical mounting in a cabinet or frame Models and mounting configurationsMechanical and electrical specifications SpecificationsOperation specifications and ambient conditions Storage conditions Ambient conditions for the rectifier OperatingConditions TransportationOutput voltage Mechanical specifications of the NT6C43CB 1200 a cabinetAmbient conditions of a 1200 a cabinet Protecting the premises InstallationMounting configurations Tools and test equipmentOptimizing the life of the equipment Personal safety and protecting the equipmentPreventing damage caused by over-tightening Preventing personal injuryProtecting against electrical shocks Short circuit hazard Installing in a frameInstalling in a cabinet Procedure 1 Installing the rectifier in a frame Step ActionAnchoring the cabinet Procedure 2 Installing a rectifier in a cabinet Step ActionInstalling the rectifier Cabling and connectingConnecting the dc output terminals to the busbars Electrical connections should meet standards Connecting ac to the rectifiersHazardous potentials Cabling ac the NT5C05CA / CB rectifiers Connecting ac to the rectifier NT5C05CC Controller NT NT6C25BA or NT6C25BB Connecting the control signalsFunction Input/ Output Pin assignment for connectors J7 to J12Monitoring of the shunt current Pin assignment for connector J13 Function Output circuit Functional descriptionOverview Input circuit AC breaker Monitoring and control circuitsOutput capacitors Description of the front panel Breakers DC circuit breakerFront panel controls and LEDs Switches, controls and LEDsAC on ac voltage monitoring CL current limit indicatorFAN ALM fan failure alarm Front panel LEDsHvsd high voltage shutdown RFA rectifier failure alarmSEN Fail sense fail alarm Local and remote adjustments and controlsDesignation Description Switches DescriptionRectifier input / output signals to the controller Remote equalize control EQL Volt / AMP digital meter switchSlope sharing SLS Rectifier parallel operationForced sharing FS Remote Hvsd Local and remote Hvsd resetSwitch Position Delay SEC Setting the start-up delayRemote on / OFF control TR Start up delay DIP switchControl signals on connector P1 CB OFF NC This page is left blank intentionally Operation Standard settingsStandard settings for the rectifier Parameter Setting Adjusting the high voltage shutdown Hvsd Starting up and adjustingProcedure 9 Starting up the rectifier Step Action Verifying the current limit Adjusting the equalize voltage EQLAdjusting the slope share Adjusting the forced load sharing Replacing the fan unit MaintenanceReplacing the air filter Re-assembling Calibrating the Volt / Amp MultimeterPreventing short circuits Remotely Resetting the rectifier after an Hvsd high voltage shutdownThis page is left blank intentionally Diagnosing system faults Fault symptom Possible causes TroubleshootingTroubleshooting Part Number CPC Appendix a Replacement partsAppendix a Recommended Replacement Parts Country Prefix Appendix B Technical service assistanceLocal toll-free prefixes Caribbean and Latin America Middle-East Cala Toll-free technical assistance numbersUnited States Canada Europe Asia and the Pacific Abbreviations and acronyms RFA Page Helios Modular Switch Mode Rectifier 200I/48 NT5C05C