User's Manual

Table of Contents
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CENTRON® Polyphase Meter Technical Reference Guide
SiteScan Meter Self-Diagnostic Checks............................................................................62
SiteScan Toolbox Mode.....................................................................................................62
SiteScan System and Installation Diagnostic Checks .......................................................66
SiteScan Diagnostic #1......................................................................................................72
Current Angle Tolerance......................................................................................... 72
Cross-Phase, Polarity, and Energy Flow Check .................................................... 72
SiteScan Diagnostic #2......................................................................................................74
Phase Voltage Deviation Check............................................................................. 75
SiteScan Diagnostic #3......................................................................................................76
Inactive Phase Current Check................................................................................ 76
SiteScan Diagnostic #4......................................................................................................78
Low End Threshold Current.................................................................................... 78
Phase Angle Displacement Check ......................................................................... 78
SiteScan Diagnostic #5......................................................................................................80
Current Waveform Distortion Check....................................................................... 81
SiteScan Diagnostic #6......................................................................................................81
Diagnostic #6 Error Example.................................................................................. 81
Testing, Troubleshooting, and Maintenance................................................................................82
Visual Indicators.................................................................................................................82
Infrared Test LED ................................................................................................... 82
Annunciators......................................................................................................................82
Load Indication/Direction Annunciator.................................................................... 83
Phase-Voltage Indication Annunciators.................................................................. 83
Nominal Voltage Indication Annunciator................................................................. 84
Test Mode Annunciator........................................................................................... 84
Energy Testing...................................................................................................................84
Testing With the Infrared Test LED ........................................................................ 84
Testing Using the Load Indication Annunciator...................................................... 85
Testing Using the Energy/Time Method ................................................................. 85
Recommended Energy Testing Procedures......................................................................85
Test Description...................................................................................................... 85
Recommendations.................................................................................................. 86
Demand Testing.................................................................................................................87
Demand Test Method ............................................................................................. 88
Demand Calculations.............................................................................................. 89
Field Testing ......................................................................................................................90
Required Hardware................................................................................................. 90
Test Method Using Infrared Pulse Adapter ............................................................ 90
Test Method Using a Snap Switch Assembly......................................................... 90
Troubleshooting .................................................................................................................91
Fatal Errors............................................................................................................. 91
Non-Fatal Errors ..................................................................................................... 92
Other Problems....................................................................................................... 95
Maintenance ......................................................................................................................97
Preventive Maintenance ......................................................................................... 97
Corrective Maintenance.......................................................................................... 97
Glossary of Terms...................................................................................................99
Index.......................................................................................................................101