Exam for Continuing Education Units 1.0 learning units (0.10 CEUs)


Topic: Selective Coordination for Generators and Transfer Switches


Date: August 18, 2011


You must get 8 of 10 questions correct to pass the exam. You may retake the exam if necessary. You will be notified whether you passed or failed automatically after taking the exam. Upon passing the exam, you will obtain directions for downloading the completion certificate.


Selective coordination of generators and transfer switches requires calculations and careful consideration of equipment specifications, especially the withstand ratings of the automatic transfer switches, and when to choose 3 cycle ATS or 30 cycle ATS. Not only are considerable costs on the line, but potentially the health and safety of lives, especially in hospitals.


Part one of this Webcast will provide instruction on the fundamentals of how to selectively coordinate generators and automatic transfer switches.


Part two of this Webcast will provide examples and more detailed guidance on selective coordination of hospital systems, including what's currently required by codes and standards.This event is free, and 1 AIA learning unit (1 PDH) is available to all registrants.


Presenters:

  • Jim Ferris, PE, Electrical Project Engineer, TLC Engineering for Architecture, Orlando, Florida
  • Dean Eriksen, PE, LEED AP, Principal and Project Manager, Affiliated Engineers, Inc., Seattle, Washington
  • Michael Ivanovich, President & Moderator, The Ivanovich Group LLC

1.Full Name *
2.Street Address 1 *
3.City *
4.State *
5.Zip Code *
6.Email Address *
7.Telephone Number *
8.Company/Organization Name *
9.AIA member number
10.) Based on the presentation given by Jim Ferris, PE: *

In order to start coordination of the emergency system, you must start with the generator.

True
False
11.) Based on the presentation given by Jim Ferris, PE: *

What information, provided by manufacturers, identifies the specific construction of the generation portion of the generator?

UL Certification Data
Generator Nameplate Data
Alternator Data Sheet
Generator Instruction Manual
12.) Based on the presentation given by Jim Ferris, PE: *

Which of the following is true:

Temperature Rise is important because it affects the size of the alternator
A generator with a 150 deg. rise would be smaller than a generator with a 80 deg. rise.
A larger alternator will produce more fault current.
All of the above
None of the above
13.) Based on the presentation given by Jim Ferris, PE: *

When determining coordination settings, you should allow the generator to produce fault current for a short time in order to give the downstream breakers a chance to react.

True
False
14.) Based on the presentation given by Jim Ferris, PE: *

Where there is more than one generator, the available fault at the parallel switchgear is the sum of all the fault current produced by each generator.

True
False
15.) Based on the presentation given by Dean Eriksen, PE: *

NEC Article 517 Health Care Facilities does not require selective coordination of Essential Electrical Systems.

True
False
16.) Based on the presentation given by Dean Eriksen, PE: *

Transfer switch ratings are generally available for:

1.5 cycles
3 cycles
30 cycles
All of the above
17.) Based on the presentation given by Dean Eriksen, PE: *

Transfer switches that are not UL 1008 tested should be avoided.

True
False
18.) Based on the presentation given by Dean Eriksen, PE: *

Factors that effect ATS withstand and closing ratings (WCR) includes:

Voltage
Frame Size (compare rating)
Number of poles
Connection type (front/rear, mechanical/compression lugs)
All of the Above
19.) Based on the presentation given by Dean Eriksen, PE: *

Engineering challenges for ATSs include:

High fault currents for longer period of time
Equipment (transfer switches, breakers, fuses, etc.) must be specified correctly
Impact to arc flash level
Cost Management
All of the Above
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