Isigaba sesi-3 – Iqondwa kanjani incazelo “yentambo yokuxhumana”

interconnection cord： intambo yangaphandle eguquguqukayo phakathi kwezingxenye ezimbili zento kagesi, ehlinzekwe njengengxenye yesisetshenziswa esiphelele ngezinjongo ngaphandle kokuxhuma kumapayipi amakhulu
Qaphela 1 kokufakwayo: Ezintweni ezisebenza ngebhethri, uma ibhethri libekwe ebhokisini elihlukile, umthofu oguquguqukayo noma intambo enwebekayo exhuma ibhokisi nento esetshenziswayo kuthathwa njengentambo yokuxhumana.

Izintambo zokuxhuma azixhunyiwe kumandla amakhulu. Atholakala phakathi kwezingxenye ezimbili zomshini. Izintambo zingahambisa amandla kagesi ukusuka kwenye ingxenye kuya kwenye. Umqondo wezintambo zokuxhuma uchazwe lapha ukunciphisa izingozi ezibangelwa izintambo zokuxhuma. Amazinga 25.23 kanye no-25.24 ahlinzeka ngezimfuneko zezintambo zokuxhumanisa. Ngokombono wezidingo ezijwayelekile, izinga ngokuyinhloko licabangela izintambo zangaphandle zento kagesi, ukudonsa okungenzeka ngesikhathi sokusetshenziswa, nezinye izimo zokusetshenziswa ezifanayo izintambo zikagesi ezingamelana nazo. Ngakho-ke, izintambo eziningi ezifinyeleleka ngaphandle ngaphandle kwezintambo zikagesi zingabhekwa njengezintambo zokuxhuma. Qaphela 1 isibonelo esijwayelekile.

Umkhiqizo oboniswe emfanekisweni ongezansi uyifeni enomsebenzi we-atomization (ukukhipha amanzi ngendlela yenkungu). Intambo yokuxhuma phakathi kwengxenye yekhanda lefeni eliphezulu kanye nengxenye yethangi lamanzi elimhlophe engezansi ingabhekwa njengezintambo zokuxhuma.

Njengoba kukhonjisiwe esithombeni esingezansi, lokhu ukuhola okuvamile phakathi kwebhodi lesekethe eliboniswayo kanye nebhodi lesifunda eliyinhloko leyunithi ye-air conditioner ehlukaniswe odongeni yasendlini. Nakuba umthofu ungase uthintwe ngokuvula ikhava engaphezulu mathupha, umthofu ungaphakathi komshini ngesikhathi sokusetshenziswa okuvamile ngakho awubhekwa njengentambo yokuxhumana. Nokho, ukuhola kusadinga ukuhlangabezana nezidingo zesigatshana 22.8.

Isisetshenziswa sikagesi sihlinzekwa ngesethi yezintambo futhi sakhiwe Ingxenye A kanye Nengxenye B, lapho Ingxenye B iphathwa ngesandla futhi ixhunywe kuNgxenye A ngentambo yokuxhuma. Lolu lwazi luvela esinqumweni se-CTL OD-5002-F3:2021.

As shown in the figure below, this is a typical lead between the display circuit board and the main control circuit board of a split wall-mounted air conditioner indoor unit. Although the lead can be touched by manually opening the top cover, the lead is inside the appliance during normal use and is therefore not considered an interconnection cord. However, the lead still needs to meet the requirements of clause 22.8.

Here is a more controversial case, which is the cord inside the compressor compartment on the back of the refrigerator. The cord in the red circle in the figure below are considered to be interconnection cords by most third-party testing organizations or laboratories.

My personal opinion is that the cord in the refrigerator compressor compartment is not an interconnection cord. We can infer the intent of the standard from the requirements of 25.23 and 25.24. The standard requires that the interconnection cord needs to meet the requirements of the power cord. The power cord can be pulled, so the test of 25.15 is required. The power cord is characterized by being external to the appliance and can be touched and pulled. The refrigerator cord we are discussing here is unlikely to be touched and basically will not be pulled.

An appliance is supplied by a cord set and is composed of Part A and Part B, where Part B is handheld and connected to Part A by an interconnection cord. This information come from CTL decision OD-5002-F3:2021.