July 2, 2018
© S&C Electric Company 1988-2018, all rights reserved
Instruction Sheet 663-590
S&C Source-Transfer PMH
Pad-Mounted Gear
Outdoor Distribution (14.4 kV and 25 kV)
Inspection Recommendations for Units
Equipped with Micro-AT
®
Source-Transfer
Control or the AT-12 Source-Transfer Control
Inspection Recommendations
Table of Contents
Section Page Section Page
Introduction
Qualified Persons ..............................2
Read this Instruction Sheet ......................2
Retain this Instruction Sheet .....................2
Proper Application .............................2
Warranty .....................................2
Warranty Qualifications .........................2
Safety Information
Understanding Safety-Alert Messages .............3
Following Safety Instructions .....................3
Replacement Instructions and Labels ..............3
Safety Precautions ............................4
General
Micro-AT Source-Transfer Control .................5
AT-12 Source-Transfer Control ....................5
Table 1. Inspection Procedures for Pad-Mounted
Gear Equipped with Micro-AT Source-Transfer
Control .......................................6
Table 2. Inspection Procedures for Pad-Mounted
Gear Equipped with AT-12 Source-Transfer
Control .......................................8
Table 3. Inspection and Maintenance Procedures for
the Enclosure and for Components in High-Voltage
Compartments ...............................10
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