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Powell IPS PowlVac IB-60202 CDR Manual (72 pages)

Vacuum Circuit Breaker 5kV & 15kV 1200A, 2000A, & 3000A

Brand: Powell | Category: Circuit breakers | Size: 4 MB

Table of Contents
4
Ch 1 General Information
8
S Cope
9
P Urpose
9
I Nstruction B Ulletins a Vailable E Lectronically
9
Ch 2 Safety
10
S Afe W Ork C Ondition
10
S Afety G Uidelines
10
G Eneral
11
S Pecific
11
X-R Ays
12
S Afety L Abels
12
Ch 3 Equipment Description
13
G Eneral
13
T He S Tored E Nergy M Echanism
13
Mechanical Description
13
Figure 1 Powlvac® CDR Vacuum Circuit Breaker Front View with Cover
14
Figure 2 Powlvac® CDR Vacuum Circuit Breaker with Front Cover Removed
15
Figure 3 Powlvac® CDR Vacuum Circuit Breaker Rear View
16
Figure 4 Cam and Fundamental Linkage Positions
18
Figure 5 Mechanism and Trip Linkages
19
Figure 6 Operation Sequence
21
Figure 7 Typical AC Control Scheme
22
Figure 8 Typical DC Control Scheme
22
Electrical Description
23
Acking M Echanism
24
General Description
24
Figure 9 Closed Door Racking Mechanism and Interlock
25
Closed Door Racking Mechanism
26
Ircuit B Reaker C Ompartment I Nterfaces
26
Primary Disconnecting Devices
26
Secondary Disconnecting Devices
26
MOC (Mechanism-Operated Contact) Actuator
27
TOC (Truck-Operated Contact) Actuator
27
Ground Connection
27
Shutter Rollers
27
Anti-Rollout Latch
27
Acuum I Nterrupters
27
Acuum Nterrupter Onnection
28
Ch 4 Installation
29
R Eceiving
29
Andling
29
Figure 10 Circuit Breaker in Shipping Carton
29
S Torage
30
Figure 11 Circuit Breaker on Crane
30
Figure 12 Circuit Breaker with Shipping Bracket
30
P Lacing the C Ircuit B Reaker I Nto S Ervice
31
High Voltage Insulation Integrity
31
Table a Field Dielectric Test Values
31
Vacuum Integrity
32
Control Voltage Insulation Integrity
33
Mechanical Operation Check
34
Figure 13 Secondary Disconnect Override Device
34
Electrical Operation Check
35
Racking Mechanism Check
35
I Nserting the C Ircuit B Reaker I Nto the C Ircuit B Reaker C Ompartment
36
Prior to Inserting the Circuit Breaker into the Circuit Breaker Compartment
37
Inserting the Circuit Breaker to the Test/Disconnected Position
38
Figure 14 Inserting Circuit Breaker into Compartment
38
Inserting the Circuit Breaker to the Connected Position
39
Figure 15 Secondary Disconnecting Devices
39
Figure 16 Racking Mechanism Retainer Assembly
39
Figure 17 Accessing Racking Drive Shaft Extension
39
Figure 18 Racking the Closed Door Racking Circuit Breaker (CDR)
40
Emoving the C Ircuit B
41
Rom the
41
Removing the Circuit Breaker from the Connected to the Test/Disconnected Position
41
Removing the Circuit Breaker from the Test/Disconnected Position out of the Circuit Breaker Compartment
41
Power Racking
42
Figure 19 Anti-Rollout Latch
42
Ch 5 Maintenance
43
G Eneral D Escription
43
Introduction
43
Table B Lubrication
44
Figure 20 Lubrication
45
Figure 21 Lubrication (Cont)
46
Inspection and Cleaning
47
M Echanism a Rea
47
Mechanical Operation
47
Lubrication
48
Closing Spring Removal
48
Figure 22 Main Closing Spring Assembly Compressed for Removal
48
Slow Closing of Mechanism
49
Figure 23 Main Closing Spring Assembly Installed
49
Mechanism Adjustments
50
Figure 24 Primary Trip Prop Adjustment
51
Figure 25 Feeler Gauge
52
Figure 26 Latch Check Switch Adjustment
53
Electrical Operation
54
Acuum I Nterrupter and C Ontact a Rea
55
Vacuum Interrupter and Contact Erosion
55
Vacuum Integrity
55
Mechanical Adjustment of Vacuum Interrupters
55
O Ptional Maintenance P Rocedures
55
High Potential Tests
55
Timing
56
Primary Resistance Check
56
Table C Timing
56
Table D Primary Resistance
56
Ch 6 Recommended Renewal Parts and Replacement Procedures
57
O Rdering I Nstructions
57
R Ecommended R Enewal P Arts
57
R Eplacement P Rocedures
57
Vacuum Interrupter Assembly
58
Figure 27 Tension Relieved on Opening Springs
58
Figure 28 Operating Pin Removal
58
Figure 29 Lower Contact Block Setting
60
Figure 30 Bell Crank Removal
60
Figure 31 Operating Yoke Setting
60
Sliding Contact Finger Assembly
62
Closing Coil Assembly
62
Primary Shunt Trip Coil Assembly
63
Secondary Shunt Trip Coil Assembly
63
Undervoltage Device Assembly
64
Charging Motor Assembly
64
Anti-Pump Relay Assembly
64
Latch Check Switch
64
Motor Cutoff Switch Assembly
65
Auxiliary Switch
65
Primary Disconnecting Device Spring Assembly
66
Figure 32 Primary Current Path
67
Table E Primary Current Path
67
Table F Control Devices
68
Figure 33 Control Devices
69
Table G Miscellaneous Parts
70

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