Wani Yadda Kaɗauki Maimaituka a Tsarin Kirkiya na Aikin Karamin Kirkiya?
Don samun hana kisan karkarren lalace, yana da kyau a duba/ma'aduta abubuwan karkarren lalace. Abubuwa masu yawan daidai ba su iya haɗa zuwa abubuwan karkarren lalace mai tsawo ta musamman; haka ake amfani da kanananan kadan da suke aiki don ma'aduta, kudin kafin kisa da tashin magana. Don ma'aduta abubuwan kadan da suka dace, ake gaba daidai na kadan don kula da kudin kafin kisa da tashin magana. A halin ma'aduta abubuwan kadan da suka dace, ake gaba daidai na kadan don kula da kudin kafin kisa da tashin magana.
Kudin kafin kisa da tashin magana suna da fannoni na ma'aduta da al'amuran daidai, wadda ke nuna da darajinsu da ake amfani da shi. Wannan da ake amfani da shi don kula da kudin kafin kisa da tashin magana (kula) da ma'aduta kadan. Al'amuransa yana tabbatar da kula da ake bayarwa masu kisan karkarren lalace, saboda haka har da mafi girma da ake amfani da shi ya kamata a yi tasiri. Saboda haka, har da mafi girma da ake amfani da shi ya kamata a yi tasiri.
Kudin kafin kisa da tashin magana mai tsawon daidai (1kV >, 36V < AC) suna da fannoni kamar LMZ (LMZJ), LMK (BH), SDH, LQX, kamar haka. Ana amfani da su daidai don 0.4kV, tare da al'amuransu (0.5, 0.5S, 0.2, 0.2S) da kudin kafin kisa da tashin magana (20-6000A, kudin kafin kisa da tashin magana 1A/5A).
Yawan fannoni da rasshukun kudin kafin kisa da tashin magana a cikin kisan karkarren lalace ya fi yawa da kiyasin kudin kafin kisa da tashin magana, tare da fannoni/rasshukun da suka dace. Kiyasun ana ambaci da a yi tasiri abin da ake amfani da shi kafin a haɗa zuwa wurin, wanda yake iya sa waƙo. Yana da kyau a zama aiki da muhimmanci. Wannan takarda ta ba da aiki aiki daidai, tare da karfin aiki a zama aiki da muhimmanci.
1. Tasiri a Kiyasuka Kudin Kafin Kisa Da Tashin Magana Mai Tsawon Daidai
Daga “JJG313 - 2010 Kiyasukan Kiyasuwar Kudin Kafin Kisa Da Tashin Magana”, abubuwan da ake amfani da su sun hada da:
Abubuwan da suka dace (kiyasuwar kudin kafin kisa da tashin magana, kiyasuwar kudin kafin kisa da tashin magana) sun nuna al'amuransa da ake amfani da su. Tasiri na biyu ita ce mai muhimmanci amma yana da wahala - yawan kudin kafin kisa da tashin magana/fayuwatun (da ake amfani da nuts, da ake amfani da transformers, kamar haka a Figure 1) take lokacin da yawa, wanda yake iya sa waƙo.
2. Gane na Tasiri na Biyu
Tsunan kudin kafin kisa da tashin magana mai tsawo suna da abubuwan da suka dace: kiyasuwar kudin kafin kisa da tashin magana da rasshukun da suka dace yana buƙatar kiyasuwar kudin kafin kisa da tashin magana (don in tabbatar da al'amuransa), wanda yake iya sa waƙo. Misali, kiyasuwar kudin kafin kisa da tashin magana mai tsawon daidai (LDF1 - 0.66) yana iya haɗa zuwa kudin kafin kisa da tashin magana mai tsawo ba su iya haɗa zuwa core.
Abubuwan da suka dace: 1) Yawan fannoni da rasshukun kudin kafin kisa da tashin magana, yawan rasshukun kudin kafin kisa da tashin magana. 2) Yawan rasshukun kudin kafin kisa da tashin magana/core sizes don soft wires da yawan cross-sections da fayuwatun. 3) Nut-screwed terminals add complexity.
Soft wires require matching terminals, causing messy wiring. Thus, copper rods replace soft wires—they offer good conductivity, sufficient strength, and simplify connections. Using workbench clamps and a rocker for fixation streamlines primary wiring, cutting time and boosting efficiency.
3. Comparative Analysis of Verification Data
To verify the effectiveness of the copper rod wiring verification method, the conventional primary test line and copper rod wiring are respectively used to verify the same current transformer (model: LMZ1 - 0.5, transformation ratio: 150/5, class: 0.2S, rated burden: 5VA, factory number: 200000203). The key error data such as ratio difference and angle difference are shown in Tables 1 and 2.
By comparing the error data in Tables 1 and 2, it can be seen that the errors of both verification methods meet the requirements of the verification regulations, and the error curves are good. The wiring method does not affect the verification error data or the verification conclusion. Through sufficient and repeated tests, the effectiveness of the copper rod verification wiring method is verified.
4. Conclusion
This paper proposes a fast verification wiring method for low-voltage current transformers. A copper rod is used to replace the primary test line, making the wiring simple and convenient. The error data of the two wiring verification methods are compared and analyzed. Through repeated tests, the error curves are good and do not affect the verification data. This method improves work efficiency and avoids difficulties in verification.
Tambayar Da Yawanci
