Sigortalar va o'chirgichlar o'rtasidagi farq

O'chirish to'xtatuvchining vazifasi: to'xtatuvchining vazifasi yuk pallasini kesish va ulash, shuningdek, avariyalarning kengayishini oldini olish, xavfsiz ishlashni ta'minlash uchun noto'g'ri zanjirni kesishdir.

Role is the role of the fuse, fuse the itself as the melt, when the current is too high or over load current by fusing itself prevent damage of the circuit of electrical components, this with open circuit breaking current is two kinds of difference and its role can be commonly used fuse to understand with our home, and circuit breaker, basic is used as the master switch. The fuse is installed in the circuit.

The difference between fuse and circuit breaker: the same is to achieve short circuit protection, the principle of fuse is to use the current flowing through the conductor will make the conductor heat, to reach the melting point of the conductor after the conductor melts, so the circuit protection with electrical appliances and the line is not burned out. It is an accumulation of heat, so it can also achieve overload protection. Once the melt burns out, the melt must be replaced.

Sigortalar va elektron to'sarlarning ishlashini taqqoslash:

Sug'urta:

1. Sigortaning asosiy afzalliklari va xususiyatlari

1) Good selectivity. As long as the rated current of the upper and lower fuses meets the requirements of 1.6:1 overcurrent selection ratio stipulated in national and IEC standards, that is, the rated current of the upper fuses is not less than 1.6 times that of the lower fuses, the upper and lower fuses can be regarded as having selective cut-off fault current.

2) Yaxshi oqim cheklash xususiyatlari, yuqori sindirish qobiliyati:

3) Nisbatan kichik o'lcham;

4) Narx pastroq.

2. Sigortalarning asosiy kamchiliklari va zaif tomonlari

1). Sug'urta tanasi noto'g'ri sug'urta qilinganidan keyin almashtirilishi kerak;

2) Yagona himoya funktsiyasi, himoya qilish uchun faqat haddan tashqari oqim teskari vaqt chegarasi xususiyati, ortiqcha yuk, qisqa tutashuv va topraklama xatosining bir qismi ishlatiladi;

3) Fazali sug'urta sodir bo'lganda, uch fazali vosita salbiy oqibatlarning ikki fazali ishlashiga olib keladi, albatta, kompensatsiya qilish uchun signal signali bilan sug'urta, fazali sug'urta uch fazali uzilishi mumkin.

; 4) Remote control can not be achieved, it is possible to combine with electric knife switch and switch.

Tanlangan bo'lmagan{0}}o'chirgich:

1. Asosiy afzalliklari va xususiyatlari

1) Nosozlik uzilgandan so'ng, katta qisqa tutashuv tokini uzgandan so'ng texnik xizmat ko'rsatish kerak bo'lmasa, uni komponentlarni almashtirmasdan qo'lda tiklash mumkin;

2) haddan tashqari yuk va qisqa tutashuvdan himoya qilish uchun mos ravishda ikkita himoya funktsiyasining teskari vaqt xususiyatlariga ega bo'lgan uzoq kechikish safari va lahzali oqim safari, har biri o'z rolini o'ynaydi;

3) Masofadan boshqarish mexanizmi elektrlashtirilganda amalga oshirilishi mumkin.

2. Asosiy zaif va zaif tomonlar

1) Yuqori va pastki selektiv bo'lmagan{1}}o'chirgichlar o'rtasida tanlab kesishga erishish qiyin. Nosozlik oqimi katta bo'lsa, yuqori va pastki elektron to'sarlarning bir zumda uzilishiga olib kelishi oson;

2) Nisbiy narx biroz yuqoriroq;

3) Part of the breaker breaking capacity is small, such as the lower rated current of the breaker installed near the position of large capacity transformer, will make the breaking capacity is not enough. Existing products with high performance can be satisfied, but the price is higher.

Selektiv o'chirgich:

1. Asosiy afzalliklari va xususiyatlari

1) Selektiv bo'lmagan{1}}to'xtatuvchining afzalliklariga ega;

2) with multiple protection function, with long time delay, instantaneous, short time delay, and ground fault (including zero sequence current and residual current protection) protection, overload respectively, cut-off time delay and large short-circuit current instantaneous movement and ground fault protection, protection of high sensitivity, adjust various parameters is convenient, easy to satisfy the distribution line protection requirements. In addition, can be cascaded protection function, with better selective action performance;

3) Hozirgi kunda ko'pchilik mahsulotlar aql-idrok xususiyatlariga ega. Himoya funktsiyasidan tashqari, tarqatish moslamalari va tizimlarining markazlashtirilgan monitoringini va boshqaruvini amalga oshirish uchun elektr miqdorini o'lchash, nosozliklarni qayd etish va aloqa uzrlari ham mavjud.

2. Asosiy muammolar

1) Narx juda yuqori, shuning uchun uni faqat tarqatish liniyasining birinchi uchida va maxsus muhim joylarning filial liniyasida ishlatish kerak.

2) Katta o'lcham.