Table Of Contents - GE PowerVac Instructions Manual

PowerVac
®
with ML-20 Mechanism

Table of Contents

Description
SECTION 1− − − − Introduction
1.1 Safety .............................................................................. 4
1.2 Maintenance ................................................................... 4
SECTION 2− − − − Description
2.1 General............................................................................ 5
2.2 Summary Description ...................................................... 5
SECTION 3− − − − Receiving, Handling and
Storage
3.1 Receiving ........................................................................ 5
A. Equipment Packages ................................................. 5
B. Inspecting for Damage .............................................. 5
C. Filing a Claim ............................................................. 5
3.2 Handling .......................................................................... 6
3.3 Storage............................................................................ 6
SECTION 4− − − − Features
4.1 Safety Precautions........................................................... 6
4.2 Interlocks ......................................................................... 6
4.2.1 Rating Interference Plate................................................. 6
4.2.2 Closing Spring Interlock ................................................... 6
4.2.3 Negative Interlock............................................................ 7
4.2.4 Positive Interlock Bar....................................................... 7
4.2.5 Closing Spring Gag Interlock............................................ 7
SECTION 5− − − − Operation
5.1 General............................................................................ 8
5.2 Close Spring Charging ..................................................... 8
5.3 Closing Operation............................................................ 8
5.4 Opening Operation.......................................................... 9
5.5 Trip-free Operation .......................................................... 9
SECTION 6− − − − Control Circuit
SECTION 7− − − − Mechanical Checking and
Slow Closing
7.1 Visual Inspection.............................................................. 9
7.2 Closing Spring Charging .................................................. 9
7.3 Closing Spring Gag .......................................................... 10
7.4 Slow Closing.................................................................... 10
7.5 Gag Plate Removal.......................................................... 10
SECTION 8− − − − Dimensional Checks
8.1 Primary Contact Erosion .................................................. 11
8.2 ML Wipe Spring Compression ........................................ 11
8.3 Contact Gap .................................................................... 11
8.4 Close Coil Plunger Gap.................................................... 12
8.5 Trip Coil Plunger Gap....................................................... 12
8.6 Control Switch Adjustment.............................................. 12
2
Vacuum Circuit Breaker
............................................ 4
............................................... 5
...................................................... 5
...................................................... 6
.................................................. 8
....................................... 9
......................................... 9
......................... 11
Page Description
SECTION 9− − − − Electrical Checks
9.1
9.2
9.2.1
9.2.2
9.3
9.4
9.5
SECTION 10− − − − Checking and Installing
SECTION 11− − − − Maintenance
11.1
11.1.1
11.1.2
11.2
11.3
11.4
11.5
11.6
11.7
11.8
11.9
SECTION 12− − − − Timing
SECTION 13− − − − Opening and Closing Speed
SECTION 14− − − − Repair and Replacement
14.1
14.2
14.3
14.4
14.5
14.6
14.7
14.8
14.9
14.10
SECTION 15− − − − Renewal Parts
15.1
SECTION 16− − − − Mechanical Adjustment
16.1
16.2
16.3
16.4
16.5
16.6
16.7
INDEX
Trouble Reporting Form................................................................ 37
Electrical Operation ......................................................... 14
High Potential Test.......................................................... 14
Primary Circuit................................................................. 14
Secondary Circuit ............................................................ 14
Primary Circuit Resistance .............................................. 14
Vacuum Interrupter Integrity Test.................................... 14
Insulation Test ................................................................. 15
Breakers
................................................. 16
General ........................................................................... 17
PowerVac Interrupter ...................................................... 17
Trouble Reporting ........................................................... 17
Service Conditions .......................................................... 17
Fault Interruptions ........................................................... 17
Contact Erosion ............................................................... 17
Transfer Finger Wear ...................................................... 17
Mechanism ..................................................................... 17
Primary Insulation Parts ................................................... 17
Lubrication ...................................................................... 18
Recommended Maintenance.......................................... 18
...................................................... 19
General ........................................................................... 21
Replacement of Interrupter Assemblies ......................... 21
Primary Disconnect Fingers ............................................ 21
Mechanism ..................................................................... 21
Control Switches ............................................................. 21
Trip Coil Replacement..................................................... 21
Closing Coil Replacement ............................................... 22
Auxiliary Switch Replacement......................................... 22
Motor Replacement........................................................ 22
"Y" Relay Replacement ................................................... 22
Ordering Instructions....................................................... 23
General ........................................................................... 23
Wipe Adjustment ............................................................ 23
Contact Gap Adjustment ................................................. 23
Trip Coil Plunger.............................................................. 24
Close Coil Plunger........................................................... 24
Close Spring Discharge Interlock..................................... 24
Negative Interlock ........................................................... 24
........................................................................................ 36
Page
................................. 14
....................................... 17
.. 20
........... 21
.................................... 23
............ 23