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S&C PMH User Manual
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S&C Source-Transfer PMH Pad-Mounted Gear
With Micro-AT
®
Control
Outdoor Distribution (14.4 kv and 25 kv)
S&C ELECTRIC COMPANY
s
663-503
INSTRUCTION SHEET
Pag
e
14 of 35
A
ugust 14,
1995
MINI-R
UPTER SWITCHES — Continued
Figure 11.
Alternate method of replacing front barrier using
Grappler
. Inset sho
ws barrier being suppor
ted on Grappler
prongs.
13
15
Table of Contents
Table of Contents
1
Introduction
2
Qualified Persons
2
General
2
Safety Information
3
Understanding Safety-Alert Messages
3
Following Safety Instructions
3
Replacement Instructions and Labels
3
Safety Precautions
4
Operating Description
5
Components
6
Mini-Rupter Switches
10
Decoupling
10
Coupling
10
Automatic Switch Operation
11
Nonautomatic Switch Operation
11
Charging Operator (Nonelectrical)
11
Front Barriers
12
Fusing
15
Assembling the Fuse
15
Installing the Fuse in the Mounting
15
Warranty Qualifications
15
Warranty Qualifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 APPENDIX E
16
Switching with Uni-Rupter
16
Installing and Closing the Fuse
16
A Note on Single-Pole Switching
20
Opening and Removing the Fuse
20
Re-Fusing
23
How to Detect and Replace a Blown Fuse
23
Installing the Fuse in the Mounting
24
Final Checks before Walking Away
25
If Operator Stalls
26
Maintenance
27
Components
27
Enclosure Finish
28
Returning Equipment to Service
28
APPENDIX A Preliminary Tryout before Gear Is Energized-Optional
29
Appendix C
29
Ratings for S&C Mini-Rupter Switches
29
Ratings for S&C Power Fuses with Uni-Rupter
30
Appendix D
31
Optional Features
31
Accessories
33
Current-Limiting Fuses for Use in
34
S&C PMH Pad-Mounted Gear
34
APPENDIX B Dielectric Testing
29
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S&C PMH Specifications
General
Brand
S&C
Model
PMH
Category
Controller
Language
English
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