Man Hours 3
Special Instructions:
1. Schedule outage with operating personnel.
2. De-energize and tag circuit. Note. These switches do not have an
interrupting rating and can only be operated after the circuit has been
opened by some other means. They should never be operated under load.
3. Obtain and review manufacturer's literature on the equipment.
4. All tests shall conform to the appropriate ASTM test procedure and the values
used as standards shall conform to the manufacturer's and ANSI Standards
specifications.
Items to Check & Initial Completion:
1.___ Inspect for signs of overheating and loose or broken hardware.
2.___ Inspect torque connections to bus and cables.
3.___ Clean main contacts, adjust and put a thin film of conductive lubricant on
them if recommended by manufacturer.
4.___ If the contacts were burned or the switch had overheated, a contact
resistance test should be conducted. Adjust the contacts with the highest
readings to correspond with the lowest reading contact. A maximum value
can be obtained from the manufacturer's instructions.
5.___ Check the fuse tubes and renewable elements for corrosion, dirt, and
tracking. Clean or replace as required.
6.___ Clean entire cubicle with vacuum.
7.___ Remove tags and return circuit to service.
8.___ Clean work area.
Tools & Materials:
1. Standard Tool kit.
Plus Insulated pliers and screwdrivers
Wire strippers
Wire crimpers
Voltmeter - Ohmmeter - Milliammeter
Clamp on meter(volt - ohm - amp meter)
Soldering kit
1/8" 25' fish tape
Burnishing tool
2. Torque wrenches.
3. Cleaning equipment and materials.
4. Vacuum.
5. Micro-Ohmmeter.
6. Appropriate lubricants.
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