Powell PowlVac STD 63kA Manuals

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Powell PowlVac STD 63kA Manual (68 pages)

Vacuum Circuit Breaker

Brand: Powell | Category: Circuit breakers | Size: 3 MB

Table of Contents
4
Ch 1 General Information
9
S Cope
10
P Urpose
10
I Nstruction B Ulletins a Vailable E Lectronically
11
A Ssociated Nstruction Ulletins
11
Ch 2 Safety
12
S Afe Ork Ondition
12
S Afety G Uidelines
12
G Eneral
13
S Pecific
13
X-R Ays
14
Abels
14
Ch 3 Equipment Description
15
G Eneral
15
T He S Tored E Nergy M Echanism
15
Mechanical Description
15
Figure 1 Powlvac® STD 63Ka Vacuum Circuit Breaker Front View with Cover
16
Figure 2 Powlvac® STD 63Ka Vacuum Circuit Breaker with Front Cover Removed
17
Figure 3 Powlvac® STD 63Ka Vacuum Circuit Breaker Rear View
18
Figure 4 Cam and Fundamental Linkage Positions
20
Figure 5 Mechanism and Trip Linkages
21
Figure 6 Operation Sequence
23
Figure 7 Typical AC Control Scheme
24
Figure 8 Typical DC Control Scheme
25
Electrical Description
26
Acking M Echanism
27
General Description
27
Standard Racking Mechanism
28
Ircuit B Reaker C Ompartment I Nterfaces
29
Primary Disconnecting Devices
29
Secondary Disconnecting Devices
29
MOC (Mechanism Operated Cell Switch) Actuator
29
TOC (Truck Operated Cell Switch) Actuator
29
Ground Connection
30
Shutter Rollers
30
Anti-Rollout Latch
30
Acuum I Nterrupters
30
Acuum I Nterrupter C Onnection
30
Ch 4 Installation
31
R Eceiving
31
Andling
31
Figure 9 Circuit Breaker in Shipping Carton
31
S Torage
32
Figure 10 Circuit Breaker on Crane
32
Lacing the
33
High Voltage Insulation Integrity
33
B Reaker I Nto S Ervice
33
Figure 11 Circuit Breaker with Shipping Bracket
33
Vacuum Integrity
34
Table a Field Dielectric Test Values
34
Control Voltage Insulation Integrity
35
Mechanical Operation Check
36
Electrical Operation Check
36
Figure 12 Secondary Disconnect Override Device
36
Racking Mechanism Check
37
I Nserting the
38
Ompartment
38
Prior to Inserting the Circuit Breaker into the Circuit Breaker Compartment
39
Inserting the Circuit Breaker to the Test/Disconnected Position
40
Figure 13 Secondary Disconnecting Devices
40
Inserting the Circuit Breaker to the Connected Position
41
Figure 14 Inserting Circuit Breaker into Compartment
41
Figure 15 Pushing Manual Trip Operator & Accessing Racking Drive Shaft
41
R Emoving the
42
C Ompartment
42
Figure 16 Racking the Standard Circuit Breaker
42
Removing the Circuit Breaker from the Connected to the Test/Disconnected Position
43
I Nserting the
43
Test/Disconnected Position out of the Circuit Breaker Compartment
43
Acking O Ption
43
Inserting the Circuit Breaker to the Test/Disconnected Position
44
Inserting the Circuit Breaker to the Connected Position
44
Figure 17 Racking Drive Shaft Extension Insertion
44
Figure 18 Accessing Racking Drive Shaft Extension
45
Emoving the
46
Removing the Circuit Breaker from the Connected to the Test/Disconnected Position
46
Rom the
46
Ircuit Reaker
46
Sing
46
Ption
46
Figure 19 through Door Racking Option
46
R Emote R Acking
47
Test/Disconnected Position out of the Circuit Breaker Compartment
47
Figure 20 Anti-Rollout Latch
47
Ch 5 Maintenance
48
G Eneral D Escription
48
Introduction
48
Inspection and Cleaning
49
M Echanism a Rea
49
Mechanical Operation
49
Lubrication
50
Closing Spring Removal
50
Figure 21 Main Closing Spring Assembly Compressed for Removal
50
Table B Lubrication
50
Slow Closing of Mechanism
51
Figure 22 Main Closing Spring Assembly Installed
51
Mechanism Adjustments
52
Figure 23 Lubrication
54
Figure 24 Lubrication (Cont)
55
Figure 25 Primary & Secondary Trip Prop Adjustment
56
Figure 26 Feeler Gauge
57
Figure 27 Latch Check Switch Adjustment
58
Electrical Operation
59
Acuum I Nterrupter and C Ontact a Rea
60
Vacuum Interrupter and Contact Erosion
60
Vacuum Integrity
60
Mechanical Adjustment of Vacuum Interrupters
60
O Ptional Maintenance P Rocedures
60
High Potential Tests
60
Timing
61
Primary Resistance Check
61
Table C Timing
61
Table D Primary Resistance
61
Ch 6 Recommended Renewal Parts and Replacement Procedures
62
O Rdering I Nstructions
62
R Ecommended R Enewal P Arts
62
R Eplacement P Rocedures
62
Figure 28 Primary Current Path
64
Table E Primary Current Path
64
Table F Control Devices
65
Figure 29 Control Devices
66
Table G Miscellaneous Parts
67

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