Complete this questionnaire to be prequalified

1) Describe the function and purpose of a typical breaker failure scheme.

2) What are important factors to consider when selecting and sizing low voltage power and/or control cables?

3) List the data that needs to be provided to a manufacturer when ordering a voltage transformer. Give sample/example data.

4) List all technical errors in the drawing excerpt above left:

5) What is the appropriate fuse size (in amps) to protect the primary winding of a 50 kVA, single phase, 19.92 kV/240V station service transformer?

6) List the devices typically found on a relay panel.

7) List all technical errors in the drawing excerpt above right:

8) Describe the basic components/design of a substation grounding system.

9) Draw/sketch a basic circuit breaker trip circuit considering and including the following:

o DC power

o Circuit breaker internal components

o Typical tripping devices

10) Draw/sketch a station one-line considering and including the following:

o 230/34.5 kV

o GndWye/GndWye/Delta

o One 230 kV line

o Two 34.5 kV feeders

o Circuit breakers

o PTs/CTs

o Disconnect Switches

o Surge Arresters

Basic relay protection scheme