Liebert 3000, 4000, 6000 A, 1500 user manual Replacing a Helios Rectifier 200I/48 or 200E/48

Page 52

Replacing a Helios Rectifier 200I/48 or 200E/48

1.Notify the alarm center of incoming alarms during this procedure.

2.Turn OFF the AC and DC circuit breakers on the rectifier to be replaced.

3.Remove the corresponding sense fuse on the front of the controller.

4.At the AC service panel, place the AC circuit breaker associated with this rectifier in the OFF position.

5.For a Helios Rectifier 200E/48 without an AC cord, remove the AC protective cover at the rear of the rectifier and disconnect the AC cable inside the rectifier (refer to Figure 32).

For a Helios Rectifier 200I/48 or 200E/48 equipped with an AC cord, unplug the AC cord from the supply receptacle.

6.Remove the four bolts for the DC connections to the busbar risers at the rear of the cabinet.

7.Disconnect the control and signal cable from the DB25 connector at the rear of the rectifier.

8.Remove the mounting screws securing the rectifier to the cabinet.

9.Carefully slide the rectifier out of the cabinet.

CAUTION: Due to the weight of the rectifier (55 kg - 120 lb) a manual lift or at least two persons are required to remove the rectifier.

Reuse the shipping carton of the new rectifier to store or ship the removed unit.

10.Ensure that the AC and DC circuit breakers on the front panel of the new rectifier are in the OFF position.

11.Lift the new rectifier to its position, rest it on the angle guides, and slide it into the cabinet.

CAUTION: Due to the weight of the rectifier (55 kg - 120 lb) a manual lift or at least two persons are required to install the rectifier.

12.Align the mounting holes of the rectifier with those of the cabinet uprights and secure the rectifier in place using the eight mounting screws provided.

Note: A star washer must be used on one of the mounting screws.

13.Reinstall the four bolts for the DC connections to the busbar risers at the rear of the cabinet (removed in Step 6).

14.Reconnect the control and signal cable into the DB25 connector at the rear of the rectifier (disconnected in Step 7).

15.Reconnect the AC cable disconnected in Step 5 (or the AC cord that was unplugged).

16.At the AC service panel, place the AC circuit breaker associated with the rectifier in the ON position.

17.Operate the AC circuit breaker of the new rectifier to the “ON” position.

18.With the DC breaker in the “OFF” position, adjust the float, equalize and high voltage shutdown voltage levels as required. Refer to the appropriate rectifier user manual (see 6.0 -

Reference Documents).

19.Reinstall the sense fuse (RC) removed in Step 3.

20.Ensure that the FLS/FS switch on the rectifier is set to the same position as that of the other rectifiers in the power system.

21.Operate the DC circuit breaker of the rectifier to the “ON” position.

22.Verify that the rectifier is sharing the load by observing its ammeter. It should display approximately the same value as the ammeters on the other rectifiers. If not, adjust its float and equalize voltage levels as described in the appropriate rectifier user manual (see 6.0 -

Reference Documents).

23.Notify the alarm center of the end of the procedure.

46 Maintenance

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Contents Helios DC System 4000/48 Page Table of Contents Operation MaintenanceReference Documents 7.0 List of Terms Figures Tables Purpose of This Document Applicability of This DocumentDescription Rectifier cabinets Main cabinet Aux dist. cabinetApplications Control and Distribution Cabinets Typical Configurations Control and Distribution cabinet 1200A Rectifier cabinetRectifier cabinets Control and distribution cabinetsAuxiliary distribution cabinets Rectifier Cabinet Capacity Type Qty Cabled top or bottomMechanical Specifications of a Cabinet Electrical Specifications of the CabinetsMechanical specifications of the cabinet empty Framework type Height Depth Width WeightMechanical Specifications of the Conventional Controller Electrical Specifications of the Conventional ControllerMechanical specifications of the Conventional Controller Height Depth Width WeightFuse Panels Mechanical specifications of the fuse panels Mechanical specifications of the fuse panelsDistribution Panels Fuse sizes available for the 20 QFF 0-5 a fuse panelsFront view of the 16 QFF 0-5 a & 12 ABS 5-30 a fuse panels Front view of the 16 QFF 0-5 a & 6 TPN 5-30 a fuse panelsFuse sizes available for the 8 TPN 5-30 a fuse panels Fuse sizes available for the 4 RS100P 70-100 a fuse panelsDC power TPL Fuse sizes available for the 4 TPL 225-600 a fuse panelsDC power TPS Fuse sizes available for the 18 TPS 1-70 a fuse panelElectrical specifications of the fuse panels Electrical specifications of the fuse panelsMechanical specifications of the circuit breaker panels Fuses Busbar Panel number Quantity CapacityFront view of the 24 Plug-In 1-100 a circuit breaker panel Nominal CPC Std Trip CPC Mid Trip CurrentFront view of the 4 70-250 a circuit breaker panel Nominal currentFront view of the 2 400 a circuit breaker panel Electrical specifications of the circuit breaker panels Electrical specifications of the circuit breaker panelsMechanical specifications of a single lamination Externally Mounted Battery Return BusbarLength Width Thickness Terminating Assemblies Optional Perspective view of the a terminating assembliesMPS300 and MPA100 Power Shelves Shelf model Height Depth Width WeightMechanical specifications of the Helios Rectifier 100/48 Electrical Specifications of the Power ShelvesRectifiers Electrical specifications of the Helios Rectifier 100/48 Electrical specifications of the Helios Rectifier 100/48Front view of the Helios Rectifiers 200I/48 and 200E/48 Total harmonic StandardsDistortion THD 600 a and 1200 a Battery Disconnect Unit Optional Mechanical SpecificationsElectrical Specifications Mechanical specifications of the Helios Monitor 3000/48Overall Power System Specifications Mechanical Specifications of Fully Equipped Power CabinetsMechanical specifications of the AC junction box Mechanical specifications of fully equipped power cabinetsEnvironmental Specifications Operating Electromagnetic compliance EMCElectrostatic discharge ESD immunity TransportationVisual indicators Visual indicatorsGeneral Front PanelTransmitted alarms Alarm DescriptionPotentiometers PotentiometersSwitches DIP switchesSwitches DIP switch modulesFuses Test pointsFuse Test pointsRear Panel Terminal blocksTB3 TB4 TB1 TB2 Connectors Rectifiers 600 a and 1200 Battery Disconnect Units Optional Helios Monitor 3000/48 Controller and Rectifiers CleaningCalibration Storage Air filter replacement Fan unit replacementTroubleshooting Fault diagnosisAddition / Replacement Procedures Addition or Replacement of a RectifierAdding a Helios Rectifier 100/48 Adding a Helios Rectifier 200I/48 or 200E/48AC connections in a Helios Rectifier 200E/48 Cover Rect Replacing a Rectifier Replacing a Helios Rectifier 100/48Replacing a Helios Rectifier 200I/48 or 200E/48 Adding or Replacing a Battery String Removal of the old stringReplacing a Cabinet Alarm Lamp Replacement of a Distribution Fuse Block or Circuit BreakerReplacing a distribution circuit breaker Reference Documents Manual No DescriptionAC or ac DC or dcFt-lb GRD or GrndIn.-lb PsiList of Terms 1500, 3000, 4000 & 6000 a DC Power System Technical Support
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