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
