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Powell PowlVac ASD Manuals
Manuals and User Guides for Powell PowlVac ASD. We have
1
Powell PowlVac ASD manual available for free PDF download: Manual
Powell PowlVac ASD Manual (71 pages)
27kV & 38kV Circuit Breaker with Vacuum Automatic Secondary Disconnect
Brand:
Powell
| Category:
Circuit breakers
| Size: 3 MB
Table of Contents
Table of Contents
5
Ch 1 General Information
9
Scope
10
Purpose
10
Instruction Bulletins Available Electronically
10
Ch 2 Safety
11
Safe Work Condition
11
Safety Guidelines
11
General
11
Specific
12
X-Rays
12
Safety Labels
13
Ch 3 Equipment Description
14
General
14
The Stored Energy Mechanism
14
Mechanical Description
14
Figure 1 Front View of Powlvac® ASD Circuit Breaker with Cover
15
Figure 2 Rear View of Powlvac® ASD Circuit Breaker
16
Figure 3 Powlvac® ASD Circuit Breaker Compartment
17
Figure 4 Operating Pushrod Assembly of Powlvac® 38Kv ASD Circuit Breaker
18
Figure 5 Ground Connection of Powlvac® ASD 38Kv Circuit Breaker
18
Figure 6 Front View of Powlvac® ASD Circuit Breaker Without Cover
20
Figure 7 Close-Up Front View of Powlvac® ASD Circuit Breaker Mechanism
21
Figure 8 Cam and Fundamental Linkage Positions
22
Figure 9 Mechanical and Trip Linkages
23
Electrical Description
25
Figure 10 Typical Control Scheme
26
Racking Mechanism
27
General Description
27
Circuit Breaker Racking Mechanism
28
Interfaces
28
Primary Disconnecting Contacts
28
Figure 11 Test Plug Jumper Interlock
28
Figure 12 Secondary Disconnect Receptacle and Secondary Disconnect Device Completed
28
Secondary Disconnecting Contacts
29
Mechanism Operated Cell (MOC) Switch
29
Ground Connection
29
Vacuum Interrupter Connections
29
Operating Solenoids
30
Anti -Pump Relay
30
Motor Cutoff Switch
30
Vacuum Interrupters
30
Shutter Operator
30
Test Position Interlock
30
Ch 4 Installation
31
Receiving
31
Handling
31
Storage
31
Figure 13 Lifting the Circuit Breaker by Crane
31
Placing the Circuit Breaker into Service
32
High-Voltage Insulation Integrity
32
Vacuum Integrity
33
Table a Field Dielectric Test Values
33
Control Voltage Insulation Integrity
34
Mechanical Operation Check
34
Electrical Operation Check
35
Nserting the
35
Reaker Nto the
35
Equipment
35
Inserting the Circuit Breaker to the Connected Position
35
Figure 14 Push to Trip Knob & Racking Access Door
36
Figure 15 Racking Indicator Flags & Racking Handle
36
Inserting the Circuit Breaker to the Test/Disconnect Position
37
Emoving the
37
Reaker from the
37
Equipment
37
Removing the Circuit Breaker from the Connected to the Test/Disconnected Position
37
Removing the Circuit Breaker from the Test/Disconnect Position out of the Circuit Breaker Compartment
38
Removing the Circuit Breaker with Test Plug Interlock Engaged
38
Ch 5 Maintenance
39
General Description
39
Introduction
39
Inspection and Cleaning
40
Mechanism Area
41
Mechanical Operation
41
Lubrication
41
Figure 16 Lubrication
42
Figure 17 Lubrication (Cont)
43
Table B Lubrication
44
Closing Spring Removal
45
Figure 18 Main Closing Spring Assemblycompressed for Removal
45
Figure 19 Main Closing Spring Assemblyinstalled
45
Slow Closing of Mechanism
46
Mechanism Adjustments
46
Figure 20 Primary & Secondary Trip Prop Adjustment
47
Figure 21 Feeler Gauge
48
Figure 22 Trip Armature Assembly Left View
49
Figure 23 Trip Armature Assembly Right View
50
Figure 24 Circuit Breaker Trip Roller
50
Figure 25 Latch Check Switch Adjustment
51
Electrical Operation
52
Vacuum Interrupter and Contact Area
52
Vacuum Interrupter and Contact Erosion
52
Vacuum Integrity
53
Mechanical Adjustment of Vacuum Interrupters
53
Optional Maintenance Procedures
53
High Potential Tests
53
Timing
54
Primary Resistance Check
54
Table C Timing
54
Table D Primary Resistance
54
Ch 6 Recommended Renewal Parts and Replacement Procedures
55
Ordering Instructions
55
Recommended Renewal Parts
55
Replacement Procedures
55
Vacuum Interrupter Assembly
56
Figure 26 Vacuum Interrupter Assembly Drawing (38Kv, 1200A)
58
Figure 27 Primary Current Path
59
Table E Primary Current Path
59
Table F Control Devices
60
Figure 28 Control Devices
61
Table G Miscellaneous Parts
62
Closing Coil Assembly
64
Primary Shunt Trip Coil Assembly
64
Secondary Shunt Trip Coil Assembly
65
Undervoltage Device Assembly (UV)
65
Charging Motor Assembly
66
Anti-Pump Relay Assembly
67
Latch Check Switch
68
Motor Cutoff Switch Assembly
68
Auxiliary Switch
69
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