Risk Control for Electrical Equipment
(3-Day)
The highest losses and the number one cause of fire are electrical. This class is designed to teach those that insure electrical equipment such as field staff inspectors, risk control specialists and the like, how to identify major types of electrical equipment installed at industrial and commercial sites, their features/function, value/significance, typical failure modes/exposures, industry best-practices regarding testing, maintenance and repairs. In short, this class is designed to help identify electrical equipment that poses a significant exposure and steps to control those exposures. The ultimate goal is to reduce the incidents and losses that involve this equipment.
Class Objectives:
Upon completion of, the student should:
- Learn how to read and interpret a one-line drawing, identify the electrical components and learn how to read and interpret a nameplate.
- Be able to identify equipment and components including as the features, functions, application, significance, and value of replacement and/or repair.
- Be able to identify the significant electrical exposures / failure modes for the class of business.
- Learn ways to mitigate exposures through testing, maintenance, etc, by the application of industry standards and best practices.
- Understand typical repairs for major electrical equipment (listed herein).
Suggested Accompanying Seminar:
- Risk Control for Fluid Filled Transformers
Venue and Duration:
- In-Class (Tallmadge, OH) – 3 days
Materials and Tools:
- Reference workbook
- Example of one-line drawing/diagram, nameplates, and case studies.
- List of suggested reading sources.
- List of suggested standards.
Activities:
- Reference the one-line drawing and nameplate to reinforce concepts
- Q & A at section conclusions
Course Outline:
- Identify the exposures at major classes of businesses
a. Industrial
b. Commercial
- Major types of electrical equipment and approach to each
a. For each of the major types of equipment, (see section 2(b) for list of equipment):
1. Description and examples of the electrical equipment (> 480 volt)
2.
Identify typical features, function, and application of equipment.
3.
Identify the value, significance of equipment including criticality, availability, replacement, and repair, as applicable.
4. Identify typical exposures and failure modes such as:
a. Long term overload
b. Electrical anomalies
c. Insulation failures
d. Protection devices
5. Industry best practices for testing and maintenance standards.
a. Include typical inspections, work scope, and timing/schedule for the various activities.
6. Describe typical repairs for each piece of electrical equipment.
b. Major electrical equipment to be addressed:
1. Large motors and generators: >1,000 hp
2. Capacitor (Static and VAR controlled)
3. UPS / Batteries
4. Inverters / Converters / Thyristors
5. Rectifiers
6. Cables: > 5kv, conduit and direct burial
7. Switchgear – metal clad: > 480 to 15Kv, air and vacuum, SF6
8. Dry-Type Transformers
9. Overhead Buswork: > 5kv
- Basic thermal overcurrent protection devices and power monitors – relaying scheme (reference one-line drawing)
a. Circuit breakers
b. Fuses
c. Overload protection
d. Phase protection
e. Surge / Lightning protection
f. Ground fault protection
- System studies
a. Why perform system studies? – include protection coordination, short-circuit analysis, relating to RMS ratings
b. Power studies / Load flow studies
c. Fault protection studies / Short-circuit studies / Ground fault studies
