I.B. 3A74791H04
Page v
Effective 7/97
Page
5-3.3
Closing Operation.................................................................................................................................20
5-3.4
Tripping Operation................................................................................................................................20
5-4
Control Schemes...............................................................................................................................................20
5-4.1
Timing...................................................................................................................................................20
5-4.2
Secondary Disconnects........................................................................................................................23
5-4.3
Undervoltage Trip Device .....................................................................................................................23
5-5
Interlocks and Interfacing ..................................................................................................................................24
5-6
Levering Mechanism .........................................................................................................................................24
5-7
Operations Counter ...........................................................................................................................................24
5-8
Ground Contact .................................................................................................................................................24
5-9
MOC and TOC Switch Operations ....................................................................................................................24
SECTION 6:
INSPECTION, MAINTENANCE AND TROUBLESHOOTING
6-1
Introduction........................................................................................................................................................26
6-2
Frequency of Inspection and Maintenance .......................................................................................................26
6-2.1
Qualified Personnel ..............................................................................................................................26
6-2.2
Helpful Tools and Accessory Items ......................................................................................................26
6-2.3
General Torque Guidelines ..................................................................................................................26
6-3
Inspection and Maintenance Procedures ..........................................................................................................29
6-4
Vacuum Interrupter Integrity Test......................................................................................................................30
6-5
Contact Erosion.................................................................................................................................................30
6-6
Contact Wipe.....................................................................................................................................................30
6-7
Insulation ...........................................................................................................................................................31
6-8
Insulation Integrity Check ..................................................................................................................................31
6-9
Primary Circuit Resistance Check .....................................................................................................................32
6-10 Mechanism Check.............................................................................................................................................32
6-11 Lubrication.........................................................................................................................................................32
6-12 Troubleshooting Chart.......................................................................................................................................33
SECTION 7:
RENEWAL PARTS
7-1
General .............................................................................................................................................................36
7-1.1
Ordering Instructions ............................................................................................................................36
Содержание Cutler-Hammer W-VAC
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