| Muhimmiya | ROCKWILL |
| Model NO. | 40.5kV 72.5kV 145 kV 252kV Series Dead Tank circuit breaker |
| Rated Voltage | 252kV |
| Raitidu kọ̀ọ̀kan | 4000A |
| Rated Frequency | 50/60Hz |
| Rated short-circuit breaking current | 50kA |
| Siri | LW58A |
Product introduction：
LW58A-40.5/72.5/145/252 Dead Tank circuit breaker is a new generation of open high-voltage electrical equipment developed independently. The tank type circuit breaker is composed of the entrance bushing, lead-out bushing, CT, arc extinguishing chamber, chassis, operating mechanism, etc. It can be used in the high-cold and high-altitude area. At present, the new generation of tank type LW58A-40.5/72.5 products have reached the leading domestic and international advanced level in advanced technology and quality reliability.
Main characteristic：
Good anti-seismic performance, the product is equivalent to the seismic grade of GIS.
(a) Horizontal arrangement of arc extinguishing chamber, low center of gravity.
(b) Auto seismic frequency: The porcelain column breaker is about 4.5 Hz, and the tank circuit breaker is about 13.5 Hz.
The electric tracing band solution can be used in the high-cold region, which cannot be realized by the porcelain column circuit breaker.
The product can be used in an area of 5000m, the standard configuration of the arc extinguishing chamber & drive system can only be fixed with the height of the outlet casing.
The tank type circuit breakers integrates the straight through current transformer, the product covers a small area, the quality is stable, and the on-site maintenance work is small. At the same time, it solves the problems such as the small margin of CT insulation, the limitation of CT capacity and the high cost, aging, cracking and explosion of the CT.
Design of an arc extinguishing chamber: Horizontal Structure, it adopts thermal expansion and auxiliary pressure gas extinguishing technology, which has small operation work, excellent breaking performance and more than 20 electrical life.
Environment adaptability: It is suitable for severe environment conditions (such as severe pollution, water fog, hall, etc.), high-altitude area, high altitude area, earthquake area, the box body is sealed with air bag type, and the body protection grade is IP66.
The CT of variable ratio and multi-level combination can be attached, high accuracy, easy to add capacity, and meet 80% or the operating frequency voltage under the value of 5Pc, can be configured with TPY.
Complete CT protection measures: CT shell is sealed at both ends of the shell and has special ant-condensation design.
The light spring operating mechanism adopts the overall cast aluminum frame. Breaking spring, closing spring and buffer are arranged in a centralized manner, and all adopt spiral double pressure spring, compact structure, not easy to fatigue.
The product is small, with integrated design, integrated supply, integrated installation conditions.
With the breaking capacity of the 4000A back-to-back capacitor bank.
Main technical parameters:
Order Notice:
Model and format of circuit breaker.
Rated electrical parameters (voltage, current, break current, etc).
Working conditions for using (environment temperature, altitude, and environment pollution level).
Operating voltage of operating mechanism and motor voltage.
The number of current transformer, current ratio, class combination and secondary load.
Names and quantities of spare items needed, parts and special equipment and tools(to be otherwise ordered).
What are the structural characteristics of the tank circuit breaker?
Integral Tank Structure: The breaker's arc quenching chamber, insulating medium, and related components are sealed within a metal tank filled with an insulating gas (such as sulfur hexafluoride) or insulating oil. This forms a relatively independent and sealed space, effectively preventing external environmental factors from affecting the internal components. This design enhances the insulation performance and reliability of the equipment, making it suitable for various harsh outdoor environments.
Arc Quenching Chamber Layout: The arc quenching chamber is typically installed inside the tank. Its structure is designed to be compact, enabling efficient arc quenching within a limited space. Depending on different arc quenching principles and technologies, the specific construction of the arc quenching chamber may vary, but generally includes key components such as contacts, nozzles, and insulating materials. These components work together to ensure that the arc is quickly and effectively extinguished when the breaker interrupts the current.
Operating Mechanism: Common operating mechanisms include spring-operated mechanisms and hydraulic-operated mechanisms.
Spring-Operated Mechanism: This type of mechanism is simple in structure, highly reliable, and easy to maintain. It drives the opening and closing operations of the breaker through the energy storage and release of springs.
Hydraulic-Operated Mechanism: This mechanism offers advantages such as high output power and smooth operation, making it suitable for high-voltage and high-current class breakers.
145kV ita ce mai gurbin da kasa a China, 138kV ita ce rike na gwamnati a Amurika, kuma 252kV yana iya amfani a harkokin lalace masu sauki. Abubuwa uku da yanayi a zaba: ① Iskauci da paramatar — tsawon kudanin karamin da kuma tsari na SF6 (0.7MPa) ta 252kV suna fiye da wasu biyu; 138kV da 145kV zai iya shara wata batun amma an buƙata cewa ya ba da inganci a tsari na samun karamin; ② Yanayin zaba uku — 138kV tana neman kananan aiki da zubaɓar zuwa jami'a, 145kV tana neman nasarorin, kuma 252kV tana buƙata kananan aiki da karamin kudanin karamin da ke ≥63kA da kuma tushen labarin bayanin iskauci.
A cikin yadda aiki da karamin ziyarar rawa, gasar SF₆ zai iya koyon da ya koyarwa, tare da abubuwa masu koyarwa kamar SF₄, S₂F₂, SOF₂, HF, da SO₂. Abubuwan da suka koyarwa suna da nasarar hanyar gajiminta, duka, ko koyarwa, kuma don haka ana bukatar bayyana.Idan adadin abubuwan da suka koyarwa yaki da muhimmanci, zan iya nuna cewa an samun ziyarar rawa ko kisan alamomin da ke kan birnin koyarwar rawa. Ana bukata inganta da koyarwa a wani lokaci don bincike masu aiki da kuma haifar da lafiya na 'yan aiki.
Har zuwa da ɗauki na gasar SF₆ yana da kyau a cikin ɗauki mai tsarki, kuma tana iya zama 1% kowace shekara. Gasar SF₆ yana da muhimmanci sosai wajen gida ƙasar, mafi yawan tasiri 23,900 kafin da za su mutuwa da gasar CO₂. Idan an haɗa shi, zai iya ba da ƙananan gwamnati kuma zai iya haifar da ci gaban gasar a cikin ƙungiyar da ake ƙare waɗannan ƙaramin jirgin ruwa, wanda ke taimakawa da darajar da ingantaccen ƙaramin jirgin ruwa.
Don in tattaunawa da haɗin ɗaukin gasar SF₆, ana samun abubuwa masu tattaunawa don ɗaukan gasar a kan ƙaramin jirgin ruwa na tank. Waɗannan abubuwa sun taimaka wajen tabbatar da ɗauka kafin ya faru don haka za a yi amfani da hanyoyin da za su taimakawa wajen ƙoƙarin ƙwarewa.
Kiwataccen tank mai tsari: Ƙasashen kawo hanyar zuwa, mutanen gine-gine da sauransu suna fi sako a kan tankin kaya da gas (kamar sulfur hexafluoride) ko zama. Wannan yana taimaka wajen haɓaka fadin gine-gine da kyau, kuma yana iya taimaka wajen inganta shirin da amanna cikin abincin. Wannan kayan aiki na iya amfani a wurare dabara daban-daban.
Tsarin ƙasashen kawo hanyar: Ƙasashen kawo hanyar yana fitowa a cikin tanki. Tsarinsa yana kunshi muhimman abubuwa kamar mafi girma, nozzles, da mutanen gine-gine. Abubuwan da suka yi aiki waɗanda suke taimaka wajen kawo hanyar da shirye-shiryen lokaci.
Mekanisumin yawanci: Mekanisumi masu amfani a cikin wannan al'adun ya kunshi mekanisumin spring da hydraulic.
Mekanisumin spring: Wannan mekanisuminsa yana da tsari mai yawa, yana da amanna, da kuma yana da shirin da ba ta da shakka. Yana amfani da energy na spring don taimaka wajen kawo da kwarin lokacin.
Mekanisumin hydraulic: Wannan mekanisuminsa yana da shirin da kyau, yana da shirin da ba ta da shakka, kuma yana da amfani a wurare da shirye-shiryen lokaci da kuma damar lokaci.
