Glossary entry (derived from question below)
English term or phrase:
Inverse Time Neutral Overcurrent + step-up transformer neutral CTs
Polish translation:
zabezpieczenie nadprądowe przewodu neutralnego o charakterystyce zależnej
Added to glossary by
Frank Szmulowicz, Ph. D.
- The asker opted for community grading. The question was closed on 2015-06-15 17:54:09 based on peer agreement (or, if there were too few peer comments, asker preference.)
Jun 12, 2015 13:44
8 yrs ago
7 viewers *
English term
France
Translator-interpreter (en-fr-pl-it)
Native in: Polish (Variant: Standard-Poland) 
Works in: English to French, English to Polish, French to English, and 6 more.
Inverse Time Neutral Overcurrent + step-up transformer neutral CTs
English to Polish
Tech/Engineering
Energy / Power Generation
Instruction book
Here is the context:
Instruction Book
51N "Inverse Time Neutral Overcurrent"
The Inverse Time Neutral Overcurrent function (51N) provides protection against ground faults.
Since no zero sequence or ground current is usually present during normal operation, this function can be set for greater sensitivity than the phase overcurrent protection.
If the 51N and 50N functions are not used at the generator neutral, they can be used to detect system ground faults by being energized by "the step-up transformer neutral CTs".
Ranges and increments are presented in Figure 2-37.
Thank you in advance,
Anna
Instruction Book
51N "Inverse Time Neutral Overcurrent"
The Inverse Time Neutral Overcurrent function (51N) provides protection against ground faults.
Since no zero sequence or ground current is usually present during normal operation, this function can be set for greater sensitivity than the phase overcurrent protection.
If the 51N and 50N functions are not used at the generator neutral, they can be used to detect system ground faults by being energized by "the step-up transformer neutral CTs".
Ranges and increments are presented in Figure 2-37.
Thank you in advance,
Anna
Change log
Jun 15, 2015 18:38: Frank Szmulowicz, Ph. D. Created KOG entry
Proposed translations
20 mins
Frank Szmulowicz, Ph. D.
United States
United States
Native in English
&
Polish
United States
On time, on target, on budget.
Native in: English 
, Polish
Works in: Polish to English, English to Polish, Russian to Polish, and 1 more.
Related KudoZ points
:
495
Selected
zabezpieczenie nadprądowe przewodu zerowego działające z odwrotną zwłoką czasową
first half
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Note added at 35 mins (2015-06-12 14:20:17 GMT)
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There is some controversy about Inverse time translation into Polish. Another alternative is
zabezpieczenie nadprądowe przewodu zerowego o charakterystyce zależnej
--------------------------------------------------
Note added at 12 hrs (2015-06-13 02:27:43 GMT)
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neutral overcurrent protection protect the neutral conductor
If the neutral conductor is correctly sized (including harmonics), no specific protection of the neutral conductor is required because it is protected by the phase protection. However, in practice, if the c.s.a. of the neutral conductor is lower than the phase c.s.a, a neutral overload protection must be installed.
If the c.s.a. of the neutral conductor is lower than the c.s.a. of the phase conductor, the neutral conductor must be protected against short-circuit.
If the c.s.a. of the neutral conductor is equal or greater than the c.s.a. of the phase conductor, no specific protection of the neutral conductor is required because it is protected by the phase protection.
http://electrical-engineering-portal.com/sizing-and-protecti...
---------
The neutral overcurrent protection is not necessary:
If the neutral conductor is protected against short-circuits by a device placed upstream, or,
If the circuit is protected by a RCD which sensitivity is less than 15% of the neutral admissible current.
-------------
Such neutral conductor overheating can be caused by inexpensive power ... and trip upon detection of selected neutral overcurrent conditions.
http://www.google.com/patents/US5483408
-------------------
grounded neutral conductor shall have overcurrent protection in each conductor. In such cases, the grounded neutral overcurrent device shall comply
https://books.google.com/books?id=K3U7AAAAIAAJ&pg=PA678&lpg=...
------------------------------------
================================================
--------------------------------------------------
Note added at 12 hrs (2015-06-13 02:42:30 GMT)
--------------------------------------------------
cccccccccccccccccccccccccccccccccccccccccccccccccccc
ccccccccccccccccccccccccccccccccccccccccccccccccccc
ccccccccccccccccccccccccccccccccccccccccccccccccccc
Other sources:
zabezpieczeń nadprądowe zwłoczne z charakterystykączasową niezależną
http://212.180.246.127/pdf-files/RIT-433A_kk.pdf
Na próżno szczegółowo wyjaśniałem [2], że angielskie „inverse-time-lag
protective device” znaczy „zabezpieczenia o charakterystyce zależnej”
http://www.redinpe.com/attachments/normalizacja/normalizacja...
cccccccccccccccccccccccccccccccccccccccc
In conclusion, the best translation would be
zabezpieczenie nadprądowe przewodu neutralnego o charakterystyce zależnej
See
Kierunkowe zabezpieczenie nadprądowe przewodu neutralnego https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&c...
--------------------------------------------------
Note added at 35 mins (2015-06-12 14:20:17 GMT)
--------------------------------------------------
There is some controversy about Inverse time translation into Polish. Another alternative is
zabezpieczenie nadprądowe przewodu zerowego o charakterystyce zależnej
--------------------------------------------------
Note added at 12 hrs (2015-06-13 02:27:43 GMT)
--------------------------------------------------
neutral overcurrent protection protect the neutral conductor
If the neutral conductor is correctly sized (including harmonics), no specific protection of the neutral conductor is required because it is protected by the phase protection. However, in practice, if the c.s.a. of the neutral conductor is lower than the phase c.s.a, a neutral overload protection must be installed.
If the c.s.a. of the neutral conductor is lower than the c.s.a. of the phase conductor, the neutral conductor must be protected against short-circuit.
If the c.s.a. of the neutral conductor is equal or greater than the c.s.a. of the phase conductor, no specific protection of the neutral conductor is required because it is protected by the phase protection.
http://electrical-engineering-portal.com/sizing-and-protecti...
---------
The neutral overcurrent protection is not necessary:
If the neutral conductor is protected against short-circuits by a device placed upstream, or,
If the circuit is protected by a RCD which sensitivity is less than 15% of the neutral admissible current.
-------------
Such neutral conductor overheating can be caused by inexpensive power ... and trip upon detection of selected neutral overcurrent conditions.
http://www.google.com/patents/US5483408
-------------------
grounded neutral conductor shall have overcurrent protection in each conductor. In such cases, the grounded neutral overcurrent device shall comply
https://books.google.com/books?id=K3U7AAAAIAAJ&pg=PA678&lpg=...
------------------------------------
================================================
--------------------------------------------------
Note added at 12 hrs (2015-06-13 02:42:30 GMT)
--------------------------------------------------
cccccccccccccccccccccccccccccccccccccccccccccccccccc
ccccccccccccccccccccccccccccccccccccccccccccccccccc
ccccccccccccccccccccccccccccccccccccccccccccccccccc
Other sources:
zabezpieczeń nadprądowe zwłoczne z charakterystykączasową niezależną
http://212.180.246.127/pdf-files/RIT-433A_kk.pdf
Na próżno szczegółowo wyjaśniałem [2], że angielskie „inverse-time-lag
protective device” znaczy „zabezpieczenia o charakterystyce zależnej”
http://www.redinpe.com/attachments/normalizacja/normalizacja...
cccccccccccccccccccccccccccccccccccccccc
In conclusion, the best translation would be
zabezpieczenie nadprądowe przewodu neutralnego o charakterystyce zależnej
See
Kierunkowe zabezpieczenie nadprądowe przewodu neutralnego https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&c...
Note from asker:
| I created separated question for step-up. Inverse time neutral overcurrent - how to say it in Polish? Thank you |
| Thank you for your answer. |
4 KudoZ points awarded for this answer.
Comment: "Thanks"
43 mins
zabezpieczenie nadprądowe zależne punktu neutralnego
IMHO.
Zamiast punkt neutralny można punkt połączenia.
Zamiast punkt neutralny można punkt połączenia.
Note from asker:
| Thank you for your answer. |
| http://www.proz.com/kudoz/english_to_polish/energy_power_generation/5873224-inverse_time_neutral_overcurrent_%2B_step_up_transformer_neutral_cts.html |
Peer comment(s):
| disagree |
Frank Szmulowicz, Ph. D.
: Until you substantiate your answers with English and Polish sources, my opinion is "disagree." //There is an opportunity here to educate for the benefit of all.///My sources point to the protection of the neutral conductor.
12 mins
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Komentarz niemerytoryczny, w którym komentujący podkreśla, że się nie zna, ale ma swoją opinię. Po przewodzie zerowym, to już nic dodawać nie trzeba.
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| agree |
mike23
1 day 16 hrs
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Dziękuję :)
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Discussion