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jflan13
January 27, 2018, 02:47 PM
On a typical IAC overcurrent relay, the target and seal in coil is in series with which of the following?
Instantaneous unit
None of the other answers are correct
Time Unit
Current transformer
Instantaneous unit & Current transformer & Time Unit
Ore905
January 28, 2018, 11:24 AM
On a typical IAC overcurrent relay, the target and seal in coil is in series with which of the following?
Instantaneous unit
None of the other answers are correct
Time Unit
Current transformer
Instantaneous unit & Current transformer & Time Unit

To be honest I'm not a fan of most of the questions in the quizzes on this site but most times seal in coil is in series with time element trip contact on the old electromechanical units.
jflan13
January 28, 2018, 11:43 AM
To be honest I'm not a fan of most of the questions in the quizzes on this site but most times seal in coil is in series with time element trip contact on the old electromechanical units.
Thank you for the help again
SecondGen
January 28, 2018, 05:32 PM
On a typical IAC overcurrent relay, the target and seal in coil is in series with which of the following?
Instantaneous unit
None of the other answers are correct
Time Unit
Current transformer
Instantaneous unit & Current transformer & Time Unit


The seal-in unit has its coil in series and its contacts in parallel with the contacts of the time-overcurrent unit, such that when the induction unit contacts close, the seal-in unit picks up and seals in. When the seal-in unit picks up, it raises a target into view, which latches up and remains exposed until released by pressing a button.

235

https://www.eiseverywhere.com/file_uploads/28259848383a635a34aeb5a5f26789a3_GEIAC77.pdf
jflan13
January 28, 2018, 06:03 PM
The seal—in unit has its coil in series and its contacts in parallel with the contacts of the time—overcurrent unit, such that when the induction—unit contacts close, the seal—in unit picks up and seals in. When the seal—in unit picks up, it raises a target into view, which latches up and remains exposed until released by pressing a button.

235

https://www.eiseverywhere.com/file_uploads/28259848383a635a34aeb5a5f26789a3_GEIAC77.pdf

Awesome, thank you
cnowak
November 11, 2021, 09:23 PM
The seal-in unit has its coil in series and its contacts in parallel with the contacts of the time-overcurrent unit, such that when the induction unit contacts close, the seal-in unit picks up and seals in. When the seal-in unit picks up, it raises a target into view, which latches up and remains exposed until released by pressing a button.

235

https://www.eiseverywhere.com/file_uploads/28259848383a635a34aeb5a5f26789a3_GEIAC77.pdf

This diagram is a big help. Thank you.