About this Course
Protective relays have a variety of settings based on the level of protection required and the time for actuation of the relay. This module explains the necessary balance of time delay characteristics and zones of protection.
By the end of this course, you will be able to:
Describe the time delay characteristics of relays including definite time, inverse, very inverse, and extremely inverse characteristics
Describe zones of protection
Describe electromagnetic induction devices including the induction disk-type and induction cup-type relays
Describe electromagnetic attraction units including the hinged armature-type and plunger-type relays
What You Get
Certificate of completion
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Content is updated and current
- Time Delay Characteristics
Zones of Protection
Electromagnetic Induction Devices
Electromagnetic Attraction Units
Static and Microprocessor Relays
When Does My Course Expire?
Your course will expire one (1) year after you purchase it (the date you submit payment), unless the course itself indicates otherwise.
How Quickly Will I Get My Certificate of Completion?
Once you finish your course and pass any required exams, you can print your certificate of completion right away.
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Your purchase was made no more than 72 hours prior to your refund request.
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Completed 50% or more of the purchased course.
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