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DEVELOPING AND IMPLEMENTING AN EFFECTIVE ELECTRICAL
MAINTENANCE PROGRAM
Part I: Selection Of A Testing Firm
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3
Part II: Developing
Specifications
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2
PAGE 3 >
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4
Part III: Anatomy Of a Shutdown; Implementing The Program
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Developing and Implementing An Effective Electrical
Maintenance Program
Part II: Developing Specifications |
Page 3 of 4
Equipment Checklist
This
checklist provides a short listing of electrical testing in one column and
various other maintenance items in the other column. This gives a
general overview of the work that needs to be considered for each piece of
equipment. Electrical maintenance and testing requires skilled
technicians and experience in operating the equipment and recognizing
abnormal situations.
Medium Voltage (38kV and
below)
Transformers, Dry, Liquid and Cast (ex. 13,200 pri -
480/277 sec)
| Insulation Resistance |
Check Connections |
| Turns Ratio Test |
Inspect for Damage |
| For Liquid - Oil Analysis |
Check Accessories |
| |
Clean |
Circuit Breakers, Air, Vacuum,
SF6
| Insulation Resistance |
Check Contact Wear |
| Contact Resistance |
Electrical and Mechanical Operation |
| High Potential Test |
Lubrication |
| |
Clean |
Motor
Controllers, Air, Vacuum
| Insulation Resistance |
Check Contact Wear |
| Contact Resistance |
Electrical and Mechanical Operation |
| |
Check Connections |
| |
Clean |
Load
Interrupter/Disconnect Switches
| Insulation Resistance |
Check Blade Wear |
| Contact Resistance |
Electrical and Mechanical Operation |
| |
Check Connections |
| |
Clean and Lubricate |
Metal Clad
Switchgear
| Insulation Resistance |
Check Bus Connections |
| High Potential |
Clean |
| |
Inspect |
Protective
Relays
| Insulation Resistance |
Check Connections |
| Timing Tests |
Clean Contacts |
Low Voltage (600 V and
below)
Switchboards
| Insulation Resistance |
Check Bus Connections |
| |
Clean |
| |
Inspect |
Circuit
Breakers, Air, Molded Case, Insulated Case
| Insulation Resistance |
Check Connections |
| Contact Resistance |
Clean |
| Secondary Current Injection |
Inspect |
| Primary Current Injection |
|
Bolted
Pressure Switches
| Insulation Resistance |
Check Connections |
| Contact Resistance |
Clean and Lubricate |
| |
Electrical and Mechanical
Operation |
Fused
Disconnect Switches
| Contact Resistance |
Check Connections |
| |
Clean and Lubricate |
| |
Mechanical Operation |
Variable
Speed Drives
| Cleaning |
Check Connections |
| |
Check Input/Output |
| |
Electrical and Mechanical
Operation |
Automatic
Transfer Systems
| Functional Testing |
Check Connections |
| |
Verify Pilot Devices |
Ground
Fault Systems
| System Test by the Monitor Panel |
Check Connections |
| Primary Injection |
Verify Amperage Setting |
Bus
Duct
| Insulation Resistance |
Torque Bus Joints |
| |
Inspect |
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