Emerson 200I/48-NT5C05C Installing in a frame, Installing in a cabinet, Short circuit hazard

Page 20

20 Installation

DANGER

Short circuit hazard

The rectifiers, and the batteries in particular, can deliver high current if a short to ground occurs. When working on live equipment, remove all personal jewellery, use properly insulated tools, and cover any live busbars with a insulating sheet of canvas to prevent short circuits that could be caused by falling tools or parts.

3.3.1.Installing in a frame

When shipped, the NT5C05CA / CB / CC switch mode rectifiers are configured for installation in a standard frame. As the rectifier is heavy, use a manual forklift to mount the rectifier in a frame. If a forklift is not available, two persons, exercising care, can lift the rectifier into place and secure it.

Procedure 1 - Installing the rectifier in a frame

Step

Action

1

Note : Install each rectifier beginning with the lowest mounting

 

position in the frame.

 

Align the mounting brackets of the rectifier with the mounting holes in

 

the frame and insert the locating pins into these holes.

2

Lift the rectifier and align the middle holes in the mounting brackets

 

of the rectifier with the locating pins inserted in the frame. Slide the

 

rectifier into position onto the locating pins.

3

Secure the rectifier to the frame by inserting and tightening a

 

mounting screw ( provided ) in the uppermost holes of each

 

mounting bracket ( one on the left side and one on the right side ).

4

Remove the locating pins and install the other six mounting screws.

 

Tighten the screws applying a torque of 6.5 ± 0.5 ft-lbs ( 8.5 ±

 

0.5 N-m ).

 

end

3.3.2.Installing in a cabinet

The cabinet is 23.56 inches ( 600 mm ) wide and deep, and 84 inches

( 2134 mm ) high. The anchors provided to secure the cabinet in place are intended for installation on 3000 psi ( 2 kg per sq. mm ) compressive strength concrete. Anchors for seismic applications are available upon request. Slotted holes are provided in the base of the cabinet for anchoring. The primary locations should be used as a first choice ( see Figure 3 ). If a steel-reinforcing rod is encountered when drilling the holes for the anchors

UM5C05C P0745680 Standard 6.00 October 2001

Emerson Energy Systems

Page 19 Page 21
Image 20
Page 19 Page 21
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 General information Purpose of this manualModels and mounting configurations Typical mounting in a cabinet or frameSpecifications Mechanical and electrical specificationsOperation specifications and ambient conditions Ambient conditions for the rectifier Operating ConditionsTransportation Storage conditionsOutput voltage Mechanical specifications of the NT6C43CB 1200 a cabinetAmbient conditions of a 1200 a cabinet Installation Mounting configurationsTools and test equipment Protecting the premisesPersonal safety and protecting the equipment Preventing damage caused by over-tighteningPreventing personal injury Optimizing the life of the equipmentProtecting against electrical shocks Installing in a frame Installing in a cabinetProcedure 1 Installing the rectifier in a frame Step Action Short circuit hazardProcedure 2 Installing a rectifier in a cabinet Step Action Anchoring the cabinetCabling and connecting Installing the rectifierConnecting the dc output terminals to the busbars Connecting ac to the rectifiers Electrical connections should meet standardsHazardous potentials Cabling ac the NT5C05CA / CB rectifiers Connecting ac to the rectifier NT5C05CC Connecting the control signals Controller NT NT6C25BA or NT6C25BBFunction 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 Monitoring and control circuits Output capacitorsDescription of the front panel Breakers DC circuit breaker AC breakerSwitches, controls and LEDs Front panel controls and LEDsCL current limit indicator FAN ALM fan failure alarmFront panel LEDs AC on ac voltage monitoringRFA rectifier failure alarm SEN Fail sense fail alarmLocal and remote adjustments and controls Hvsd high voltage shutdownDesignation Description Switches DescriptionRectifier input / output signals to the controller Volt / AMP digital meter switch Remote equalize control EQLRectifier parallel operation Slope sharing SLSForced sharing FS Local and remote Hvsd reset Remote HvsdSetting the start-up delay Switch Position Delay SECRemote 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 Resetting the rectifier after an Hvsd high voltage shutdown RemotelyThis page is left blank intentionally Troubleshooting Diagnosing system faults Fault symptom Possible causesTroubleshooting Appendix a Replacement parts Part Number CPCAppendix 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
Top Page Image Contents