Table Of Contents - GE prolec VR-1 Installation, Operation And Maintenance Manual

INDEX
1. INTRODUCTION .........................................................................................................................6
2. RECEIVING ................................................................................................................................6
2.1 Shipping Damage ................................................................................................................6
2.2 Storage ................................................................................................................................6
2.3 Warranty ..............................................................................................................................6
3. INSTALLATION .........................................................................................................................6
3.1 Inspecting ............................................................................................................................6
3.1.1 General ........................................................................................................................6
3.1.2 Sealed Tank Regulator ...............................................................................................7
3.2 Checking Regulator Controls and Control Settings Prior to Energization ....................8
3.3 Exciting the Regulator High Voltage Windings from an External Supply ......................9
3.4 Mounting ..............................................................................................................................9
3.5 Surge Protection .................................................................................................................10
3.6 Three-Phase Connections..................................................................................................11
3.7 Short-Circuit Rating ............................................................................................................11
3.8 Overloading Single-phase Step Voltage Regulators .......................................................11
3.9 Power Connections ............................................................................................................11
3.10 Connecting into Service ...................................................................................................12
3.11 Removing from Service ....................................................................................................12
3.12 Test for Phase Sequence .................................................................................................14
3.13 Voltage Regulator for Grounded-Y Circuits ...................................................................16
3.14 Other Than Rated Voltage ................................................................................................16
3.15 Voltage Regulator PT Ratio .............................................................................................17
3.15.1 Source PT Ratio Test ...............................................................................................17
3.15.2 Load PT Ratio Test ..................................................................................................18
3.16 Handhole Cover Removal ................................................................................................19
3.17 Handhole Cover Installation ............................................................................................19
4. OPERATION ...............................................................................................................................21
4.1 Control Interface Instructions ............................................................................................21
4.2 Load Bonus Feature ...........................................................................................................22
4.3 Removing the Indicator Dial Assembly .............................................................................23
5. MAINTENANCE ..........................................................................................................................23
5.1 Inspecting the Regulator while Energized ........................................................................23
5.2 Untanking ............................................................................................................................24
5.3 Replacing the Internal Clamp Bushing .............................................................................25
5.4 Contact Inspection ..............................................................................................................26
6. TROUBLE SHOOTING ...............................................................................................................28
6.1 Control Interface Test Points .............................................................................................28
6.2 Typical Diagrams ................................................................................................................34
7. PARTS LIST ...............................................................................................................................38
prolec.energy/prolecge
GEH-7299A: Installation, Operation and Maintenance Manual
for Type VR1™ Single-Phase, Step Type Regulators
4