GE prolec VR-1 Installation, Operation And Maintenance Manual

Also see for VR-1: Installation operation & maintenance

GEH-7299A: Installation, Operation and Maintenance Manualfor Type VR1™ Single-Phase, Step Type Regulatorsprolec.energy/prolecge4INDEX1. INTRODUCTION .........................................................................................................................62. RECEIVING ................................................................................................................................62.1 Shipping Damage................................................................................................................62.2 Storage ................................................................................................................................62.3 Warranty ..............................................................................................................................63. INSTALLATION .........................................................................................................................63.1 Inspecting ............................................................................................................................63.1.1 General ........................................................................................................................63.1.2 Sealed Tank Regulator ...............................................................................................73.2 Checking Regulator Controls and Control Settings Prior to Energization ....................83.3 Exciting the Regulator High Voltage Windings from an External Supply ......................93.4 Mounting..............................................................................................................................93.5 Surge Protection .................................................................................................................103.6 Three-Phase Connections..................................................................................................113.7 Short-Circuit Rating ............................................................................................................113.8 Overloading Single-phase Step Voltage Regulators .......................................................113.9 Power Connections ............................................................................................................113.10 Connecting into Service ...................................................................................................123.11 Removing from Service ....................................................................................................123.12 Test for Phase Sequence .................................................................................................143.13 Voltage Regulator for Grounded-Y Circuits ...................................................................163.14 Other Than Rated Voltage ................................................................................................163.15 Voltage Regulator PT Ratio .............................................................................................173.15.1 Source PT Ratio Test ...............................................................................................173.15.2 Load PT Ratio Test ..................................................................................................183.16 Handhole Cover Removal ................................................................................................193.17 Handhole Cover Installation ............................................................................................194. OPERATION ...............................................................................................................................214.1 Control Interface Instructions............................................................................................214.2 Load Bonus Feature ...........................................................................................................224.3 Removing the Indicator Dial Assembly.............................................................................235. MAINTENANCE ..........................................................................................................................235.1 Inspecting the Regulator while Energized ........................................................................235.2 Untanking ............................................................................................................................245.3 Replacing the Internal Clamp Bushing .............................................................................255.4 Contact Inspection..............................................................................................................266. TROUBLE SHOOTING ...............................................................................................................286.1 Control Interface Test Points .............................................................................................286.2 Typical Diagrams ................................................................................................................347. PARTS LIST ...............................................................................................................................38