ANSI UL 458 - Page 2

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NOT AUTHORIZED FOR FURTHER REPRODUCTION OR

DISTRIBUTION WITHOUT PERMISSION FROM UL

Main Page

Table of Contents9
Introduction15
Scope15
Glossary16
Components20
General20
Units of Measurement20
Undated References20
Part I - Power Converters and Inverters21
Construction21
General21
Frame and Enclosure21
Enclosures Used for Protected Environments26
Atomized Water Test26
Accessibility of Uninsulated Live Parts, Film-Coated Wire, and Moving Parts27
General27
User Servicing29
Serviceman Servicing30
Assembly30
Protection against Corrosion31
Supply Connections31
Permanently-Connected Converters or Inverters31
Cord Connection35
Bushings36
Low-Voltage Output Connections and Wiring37
General37
Cigarette Lighter Inputs38
Secondary Circuits38
Live Parts41
Internal Wiring42
General42
Tubing42
Protection of Wiring43
Electrical Connections43
Separation of Circuits44
Barriers45
Insulating Materials47
Transformers47
General47
Coil Insulation47
Resistors50
Switches and Controllers50
Overload-Protective Devices50
General50
Overcurrent-Overtemperature Protection51
Fuses and Fuseholders51
Receptacles52
Inverter Output Circuits52
Lampholders53
Capacitors53
Transient Voltage Surge Suppressors53
Printed Wiring53
Spacings55
General55
Insulation Barriers60
Grounding61
Bonding of Internal Parts63
General63
Bonding Conductor65
General65
Leakage Current Test65
Power Input Test69
Output Voltage Measurement Test69
Capacitor Voltage Measurement Test69
Output Voltage and Current Test70
Temperature Test70
Normal70
Maximum Output Without Fan Operation75
Zero Clearance75
Maximum Overload Without Trip76
External Surface Temperature Limits Test76
Dielectric Voltage-Withstand Test77
Induced Potential Test78
Testing on Transformer Insulating Materials78
Strain Relief Test78
Overload Test79
Overcurrent Protection Calibration Test81
Ground-Fault Circuit-Interrupter Evaluation Test for Power Inverters81
Battery Charger Overcharge Test82
Abnormal Operation Test82
General82
Output Short-Circuit84
Switch Position85
Component Malfunction85
Rectifier and Capacitor Short-Circuit Test85
Vibration Test85
Surge Protectors87
Specific Value Overload87
Blanketing Test88
Flanged Bobbin Transformer Abnormal Test88
Blocked Fan90
Evaluation of Reduced Spacings on Printed Wiring Boards90
General90
Dielectric Voltage-Withstand Test90
Shorted Trace Test91
Burnout Test91
General91
Grounding Continuity Test99
Rating99
General99
Marking100
Details100
Instruction Manual105
Part II - Power-Converter Systems105
General105
Construction105
Frame and Enclosure105
Power-Supply Assembly106
Supply and Output Connections106
Overcurrent Protection108
Transfer Switches109
Spacings109
Performance110
Temperature Test110
Marking110
Details110
Supplement Sa - Marine Power Converters/Inverters and Power Converter111
Inverter Systems111
Introduction111
SA1 Scope111
SA2 Glossary111
Construction111
SA3 General111
SA4 Frame and Enclosure112
SA4.1 General112
SA4.2 Enclosures for Open Cockpit or Weatherdeck Mounting112
SA5 Protection against Corrosion113
SA6 Supply Connections114
SA7 Internal Wiring and Grounding115
SA8 Battery Connections115
SA9 Ignition Protection115
SA10 Receptacles116
SA11 Arcing Parts116
SA12 Electrical Components116
Performance116
SA13 General116
SA13A Water Spray Test116
SA13B Drip Test120
SA14 Leakage Current, Insulation Resistance, and Dielectric Voltage-Withstand (Repeated) .SA10120
SA15 Salt Spray Corrosion Test121
SA16 Output Voltage Control121
SA17 Electrolyte Conditioning122
SA18 Battery Discharge122
SA19 Vibration122
SA20 Shock124
SA21 Ignition Protection124
SA22 Metallic Coating Thickness125
SA23 Accelerated Aging of Gaskets, Sealing Compounds and Adhesives127
SA24 Label Adhesion129
SA25 Details129
Instructions130
SA26 Instruction Manual130
SA27 Important Safety Instructions131
SA28 Assembly Instructions135
SA29 Operating Instructions135
SA30 Maintenance Instructions136

ANSI UL 458 - Page 2

Table of Contents