Emerson NT5C06D Applications, Equipment Identification, MPS75 NT5C10CX  power shelf 23-inch

Page 12

12 Introduction

Applications

The rectifier is designed to function as the prime source of power for equipment requiring -48 V DC. It will also operate as a battery charger or as a battery replacement (batteryless operation). Its low output noise and good voltage regulation, combined with a 0.01% V coefficient for each degree C of temperature, provides an excellent charging facility to maintain a battery fully charged.

The NT5C06D rectifier is designed to operate continuously in a small or large power system. The NT5C06D is compatible with all other Astec rectifiers, and can be interfaced with other commercially available standard (compatible) rectifiers and power plants. The NT5C06DA/DB is designed to operate in temperatures ranging from 0°C to 65°C.

Equipment Identification

This section contains a description of the major components and available options for the NT5C06D Rectifier, and the MPS75 power shelves.

NT5C06DA

-48

V / 25

A Switch Mode Rectifier, brown

NT5C06DB

-48

V / 25

A Switch Mode Rectifier, dolphin grey

NT5C10C(X) Rack mount power shelf family, 23” mounting

Note: Many shelf models, with different colors and features, are available.

MPS75 NT5C10C(X) power shelf (23-inch)

The MPS75 is a power shelf that can support up to three NT5C06 rectifiers. The rectifiers plug into the shelf, which provides interconnection points for AC input, DC output, and alarm and control signals. Each power shelf requires either three AC feeds (one for each rectifier) for the individual AC models, or a single AC feed for the three shelf rectifiers for the common AC models. Its output connects to the charge busbar or to the load distribution

panel through two cablesbattery and battery return. Each rectifier position has its own connector-terminated alarm and control cable going to the power plant control and monitor unit.

UM5C06D ( 169-2071-504 ) P0831010 Standard 7.00 May 2001

Image 12
Contents Helios Rectifier 25/48 Single Phase -48V, 25 a P0831010 Standard 7.00 MayPage Helios Rectifier 25/48 Single Phase -48V, 25A Page Publication history This page is left blank intentionally Contents Contents List of Procedures List of FiguresShelf List of TablesThis page is left blank intentionally Introduction DescriptionMPS75 NT5C10CX  power shelf 23-inch ApplicationsEquipment Identification MPS75 Modular Power Shelf-NT5C10C with 8-pin signal cables NT5C06D Switch Mode Rectifier Specifications Electrical specificationsElectrical specifications Efficiency and Power Factor Output noise and rippleReliability Heat DissipationEnvironmental specifications Operating TransportationStorage Specifications Installation and start up Installing the power shelfTools and test equipment Wiring the power shelf Procedure 1 Installing the power shelf Step ActionInstalling the AC power AC cable wire sizeAWG for each rectifier Max for each rectifierDC Conductors Installation Power shelf individual AC connectionControl and Alarm Connections Connecting the DC power shelfRectifier Failure Alarm Rectifier 1 fail alarmRectifier 2 fail alarm Rectifier 3 fail alarmAC Line Fail Alarm Fan AlarmDC Circuit Breaker Sense FailA0384387 SIG NAL Cables FRO M Shelves Installing the rectifier Factory settingVerification Procedure 4 Starting up the rectifier Step High Voltage Shutdown Hvsd AdjustmentFloat Voltage Adjustment Rectifier meter accuracy= 52.2 + .15 V = 52.35 Ii Forced Share Current Limit Verification CLLoad Sharing Load Share Adjustment Procedure Procedure 5 Adjusting the load share Step ActionSlope Load Share Forced Load ShareOperation Features Front panel controlsLocal float / equalize control High voltage shutdown Hvsd localStart-up delay IndicatorsRectifier failure alarm RFA Fan failure alarmSense fail alarm SEN Fail Local ON/OFF control AC breakerRemote ON/OFF control Remote voltage sensingSequential start Parallel operationDischarge of output capacitors Local / remote high voltage shutdown reset Power interface edge connectorInput AC voltage monitor Thermal shutdownSignal interface connector Power interface connectionsControl signal connections Maintenance Procedure 6 Adjusting the float / equalize StepFloat / equalize High voltage shutdown Hvsd Cooling fanFan failure Fan replacement NT5C06D rear view Power shelf This page is left blank intentionally Troubleshooting Alarm indication RFA faultSystem fault diagnosis Fault symptom Possible causes SEN Fail fault Erratic load faultCurrent or voltage float fault Fault symptom Possible causesAppendix a Replacement parts CPCAppendix a Replacement parts Appendix B Technical service assistance Local toll-free prefixesCountry Appendix B Technical service assistance Toll-free technical assistance numbersUnited States Canada Europe Asia and the Pacific List of terms and acronyms Rectifier Fail Alarm Normally OpenNorthern Telecom Sense FailPage Part of Emerson Network Power