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Liebert 4000, 3000, 6000 A, 1500 user manual 5.2Troubleshooting, Fault diagnosis

Models: 3000

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5.2Troubleshooting

5.2Troubleshooting

Table 39 provides a list of the problems that may occur on the Helios DC System 4000/48, along with their possible causes. Blown fuses and tripped circuit breakers should always be investi- gated before utilizing Table 39.

Table 39 Fault diagnosis

Fault symptom	Possible causes

No DC output current	Open AC circuit breaker
	Open DC circuit breaker
	Faulty connection between the power shelf and the rectifier (Helios
	Rectifier 100/48)
	Faulty connection between the rectifier and the power plant
	Sense leads opened

Incorrect indication of the DC	Incorrect meter calibration
output current	Loose shunt leads connection

Low float voltage	Faulty rectifier(s)
	Shorted battery cell(s)
	Prolonged power failure
	Incorrect float voltage adjustment
	Sense leads opened

Low recharge voltage	Incorrect float voltage adjustment
	Discharge load greater than the rectifier’s capacity (batteries are
	recharging or the system is in manual bypass)
	Sense leads opened

High float or recharge voltage	Faulty rectifier(s)
	Incorrect Float/Equalize adjustment

Failure to generate alarms	Incorrect connections between the controller and the rectifiers and
during alarm conditions	distribution panels

Failure to generate cabinet	Faulty LP fuse on the controller (F31)
alarm during minor or major	Faulty cabinet alarm lamp
alarm conditions	Faulty or loose connection
	Faulty or loose connection

Failure to generate RFA alarm	Faulty rectifier
under appropriate conditions	Faulty wiring
	Faulty RFA LED

Failure to generate FA alarm	Faulty wiring
	Faulty fuse
	Faulty FA LED
	Loose connection

HV lamp lit	High discharge voltage condition
	Incorrect HV level adjustment

LV lamp lit	Low discharge voltage condition
	Incorrect LV level adjustment

HF lamp lit	High discharge voltage condition
	Incorrect HF level adjustment

LF lamp lit	Low discharge voltage condition
	Incorrect LF level adjustment

FA lamp lit	Blown fuse or extended FA alarm

CFA lamp lit	Blown charge fuse

DFA lamp lit	Blown distribution fuse

RECT MIN lamp lit	One rectifier has failed

RECT MAJ lamp lit	Two or more rectifiers have failed

RECT FAN lamp lit	Defective rectifier fan(s)

Maintenance 39

Image 45

Liebert 4000, 3000, 6000 A, 1500 user manual 5.2Troubleshooting, Fault diagnosis

Contents

1500, 3000, 4000 & 6000 A DC Power System User DC POWERHelios DC System 4000/48 ManualPage TABLE OF CONTENTS 4.0 OPERATION FIGURES TABLES 1.1Purpose of This Document 1.2Applicability of This Document1.0ABOUT THIS DOCUMENT 2.0INTRODUCTION 2.1DescriptionIntroduction 2.2ApplicationsControl and Distribution cabinet 1200A Rectifier cabinet4 Introduction Rectifier cabinets Control and distribution cabinetsAuxiliary distribution cabinets 3.1.1 Mechanical Specifications of a Cabinet 3.0SPECIFICATIONS3.1.2 Electrical Specifications of the Cabinets 3.1Framework3.2Conventional Controller WeightHeight DepthMechanical specifications of the fuse panels 3.3Distribution Panels3.3.1Fuse Panels Page 10 Specifications DC power TPNFuse type Current AFuse type DC power TPLCurrent A HRC1-J12 Specifications DC power TPSFuse type Current A3.3.2Circuit Breaker Panels Electrical specifications of the fuse panelsNominal Refer to Table 21 for the maximum panel capacityCPC Std Trip CPC Mid TripRefer to Table 21 for the maximum panel capacity Refer to Table 21 for the maximum panel capacity Panel description All bars and details are 0.5 in. thick 3.4Externally Mounted Battery Return BusbarNT6C2625 3.5Terminating Assemblies OptionalNT6C2624 for main distribution cabinetWeight 3.6MPS300 and MPA100 Power ShelvesShelf model Height3.7.1Helios Rectifier 100/48 3.7Rectifiers3.7.2Helios Rectifiers 200I/48 and 200E/48 1 0 CA/AC VOLT AMP VOLT/AMP0 CC/DC 3.7.4Standards 3.8.1Mechanical Specifications 3.8.2Electrical Specifications3.8Helios Monitor 3000/48 Optional 3.10.1 Mechanical Specifications 3.11Overall Power System Specifications3.10.2 Electrical Specifications 3.10AC Junction Box3.11.4Environmental Specifications Operating 3.11.3Electrical SpecificationsElectromagnetic compliance EMC Electrostatic discharge ESD immunity4.1General Visual indicators4.2Conventional Controller 4.0OPERATIONPotentiometers Table 33 Transmitted alarmsForm C contacts are rated at 0.5 A, 60 V AC Table 34 PotentiometersDIP switches SwitchesTable 35 Switches Table 36 DIP switch modulesFuses Figure 28 Equalize voltage and duration settingsTest points Table 37 Fuse4.2.2Rear Panel Terminal blocks32 Operation To office Connectors 4.3MPS300 and MPA100 Power Shelves4.5AC Junction Box 4.4Rectifiers4.6Distribution Panels 4.7Terminating Assemblies Optional36 Operation 4.8Helios Monitor 3000/48 OptionalCleaning 5.0MAINTENANCE5.1.1Helios Monitor 3000/48 5.1.2Controller and RectifiersAir filter replacement Fan unit replacement38 Maintenance Table 39 Fault diagnosis 5.2Troubleshooting5.3.1Addition or Replacement of a Rectifier 5.3Addition / Replacement ProceduresAdding a Helios Rectifier 200I/48 or 200E/48 Adding a Helios Rectifier 100/48Reference Documents Reference Documents42 Maintenance Teck cable or flexible conduitAC cover GRD Cover RECT RECT RECT RECT RECT RECT Junction box Replacing a Helios Rectifier 100/48 5.3.2Replacing a RectifierReference Documents 6.0 - Reference DocumentsReplacing a Helios Rectifier 200I/48 or 200E/48 5.3.3Adding or Replacing a Battery String Replacing a distribution circuit breaker 5.3.5Replacing a Cabinet Alarm Lamp6.0REFERENCE DOCUMENTS Manual NoDescription 7.0LIST OF TERMS HVSD 52 List of Terms Technical Support Helios DC System 4000/48The Company Behind The Products 1500, 3000, 4000 & 6000 A DC Power System