Emerson 200I/48-NT5C05C user manual Volt / AMP digital meter switch, Remote equalize control EQL

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Functional description 37

VOLT / AMP digital meter switch

This switch is used to select the measurement display mode of the digital meter. The output voltage or the output current modes can be selected.

VOUT+, VOUT− test points

These test points are used to measure the voltage at the point of regulation. A 5 kohm resistor is placed in series with both sensing leads to prevent short-circuits at the jack terminals. The resistor may affect reading accuracy, depending on the impedance of the meter. Refer to the Instruction Manual for your meter to determine its internal impedance and correction factor.

4.2.6.Float and equalize voltage control

Local FLOAT / EQL switch and potentiometers

The rectifier is equipped with a FLOAT / EQL switch.

When the FLOAT / EQL switch is held in the EQL position, the rectifier goes into equalize mode and boosts the output voltage to the value set by the EQL potentiometer.

When the switch FLOAT / EQL is held in the FLT position, the rectifier delivers a float voltage set by the FLT potentiometer.

Remote equalize control EQL

The rectifier is equipped with remote equalize control. This control is activated by a remote ground signal ( BAT RTN ). The rectifier returns to normal ( float voltage ) operation when this signal is removed.

4.2.7.Current limit adjustment and rectifier regulating test CL ADJ potentiometer

The rectifier limits the output current to a select value ranging from 100 A to 210 A, set by the CL ADJ potentiometer. The factory adjustment is

205 A ±5 A. Extended periods of operation in the current limiting mode and repeated transitions between constant-voltage operation and constant- current operation have no detrimental effect on the performance or service life of the rectifier.

Emerson Energy Systems

Rectifier 200I/48NT5C05C 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 Figures List of ProceduresList of Tables 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 Conditions Ambient conditions for the rectifier OperatingTransportation Storage conditionsAmbient conditions of a 1200 a cabinet Mechanical specifications of the NT6C43CB 1200 a cabinetOutput voltage Mounting configurations InstallationTools and test equipment Protecting the premisesPreventing damage caused by over-tightening Personal safety and protecting the equipmentPreventing personal injury Optimizing the life of the equipmentProtecting against electrical shocks Installing in a cabinet Installing in a frameProcedure 1 Installing the rectifier in a frame Step Action Short circuit hazardAnchoring 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 signalsMonitoring of the shunt current Pin assignment for connectors J7 to J12Function Input/ Output Pin assignment for connector J13 Function Overview Input circuit Functional descriptionOutput circuit Output capacitors Monitoring and control circuitsDescription of the front panel Breakers DC circuit breaker AC breakerFront panel controls and LEDs Switches, controls and LEDsFAN ALM fan failure alarm CL current limit indicatorFront panel LEDs AC on ac voltage monitoringSEN Fail sense fail alarm RFA rectifier failure alarmLocal and remote adjustments and controls Hvsd high voltage shutdownRectifier input / output signals to the controller Switches DescriptionDesignation Description 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 delayControl signals on connector P1 Start up delay DIP switchRemote on / OFF control TR CB OFF NC This page is left blank intentionally Standard settings for the rectifier Parameter Setting Standard settingsOperation Procedure 9 Starting up the rectifier Step Action Starting up and adjustingAdjusting the high voltage shutdown Hvsd Adjusting the slope share Adjusting the equalize voltage EQLVerifying the current limit Adjusting the forced load sharing Replacing the air filter MaintenanceReplacing the fan unit Preventing short circuits Calibrating the Volt / Amp MultimeterRe-assembling 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 Local toll-free prefixes Appendix B Technical service assistanceCountry Prefix United States Canada Europe Asia and the Pacific Toll-free technical assistance numbersCaribbean and Latin America Middle-East Cala Abbreviations and acronyms RFA Page Helios Modular Switch Mode Rectifier 200I/48 NT5C05C