Function of Air Switch Interlock in Equipment Operation
Release time:
2020-12-01
air switch interlock in equipment operation
air switch is a very important component in low-voltage distribution network and electric drive system. It integrates control and various protection functions. In addition to completing contact and breaking circuits, it can also protect short circuits, severe overload and undervoltage of circuits or electrical equipment. At the same time, if we make a reasonable combination of interlocking, we can also protect the equipment and system from the lack of phase, misdivision and leakage of the air switch in operation. In
operation, the protection of the motor by the phase-missing interlock of the air switch
2017 , in view of the frequent burning of the motor due to the phase-missing in the packaging lane of daye peak cement company, we decided to carry out the air switch interlock after comprehensive analysis, use three 220V intermediate relays to split the three phases at the outlet end of the air switch, and then connect the three opening points in series with each other and then in series to the control loop, the loading lane after interlocking has not burned the motor due to lack of phase so far. Protection of Equipment and System by Misdividing Interlock of Air Switch during
Operation
In 2018 , the air switch of the main motor transformer of Daye Peak Kiln was broken due to the burning of the cooling fan, resulting in excessive temperature rise of the transformer. After analyzing the reasons, we installed a 220V intermediate relay at the outlet end of the air switch of the control power supply, and then tripped the transformer to interlock and connect it to the relay closing point. After interlocking, the transformer is protected in all directions. On October 28, 2020, the limestone yard stacker due to the hydraulic station air switch misdivision caused the pile back pressure dead, to find out the reason after we use the intermediate relay for combination interlocking, and then the hydraulic station comprehensive fault interlocking and connected to the relay closing point, interlocking after the stacking system for a good protection.
During operation, the leakage and interlocking of the air switch protects the equipment
2017 . Because the auxiliary transmission of the finished 3# cake hoist is of double drive structure, there is a drawer cabinet empty during power transmission, resulting in stand-alone operation. After finding out the reason, we interlocked the air switches of the two drawer cabinets with each other and connected them in series to the control circuit, so that the equipment cannot be turned on no matter which air switch is not closed, and no matter which air switch trips and the other trips at the same time. So far, the interlocking has effectively protected the equipment.
It can be seen from the above that the reasonable combination of air switch interlocking is used flexibly in the low-voltage distribution network and electric drive system to protect the equipment well, which fully reflects the importance of air switch interlocking in the operation of the equipment. (Shi Zhangliang)
More information
The company won the Taurus Award
On December 29, 2022, the "2022 High-quality Development Forum of listed companies and the 24th Golden Bull Award presentation ceremony of listed companies" jointly sponsored by China Securities News, Haikou Municipal Government and Haikou National High-tech Zone was held in Haikou. The list of Golden Bull Awards of listed companies was officially announced. With its outstanding performance, Jianfeng Group won the "2021 Golden Bull Most Investment Value Award".
2023
01-12
From December 11th to 12th, the 13th National Congress of the All-China Federation of Industry and Commerce was held in Beijing. Jiang Xiaomeng, chairman of the group company, attended the conference as a representative of Zhejiang.
2022
12-22
Yunnan Jianfeng won the title of "Harmonious Labor Relations Enterprise" in Yunnan Province
On November 18, the Yunnan Provincial Federation of Trade Unions, the Department of Human Resources and Social Security, the Entrepreneur Association and other units jointly issued a document to commend the harmonious labor relations enterprises in Yunnan Province from 2020 to 2021. Yunnan Jianfeng Cement Company is on the list and is the only enterprise in the urban area of Pu'er to receive this honor.
2022
12-13
Huang Ping Jianfeng won the title of "provincial green factory" in Guizhou
On November 30, the Guizhou Provincial Department of Industry and Information Technology released the 2022 list of green manufacturing units in Guizhou Province, and Huangping Jianfeng Cement Company was recognized as a "provincial green factory".
2022
12-13
On December 2, Yu Jianhong, general manager of the group company, gave a management lesson to the company's reserve management talents under the title of "Enterprise Management Innovation in Great Changes.
2022
12-13
On November 24, Jiang Xiaomeng, secretary of the party committee and chairman of the group company, gave a special party lesson to all party members and cadres of the company under the title of "comprehensively promoting the Great Rejuvenation of the Chinese Nation with Chinese Modernization" to interpret and preach the spirit of the 20th CPC National Congress.
2022
12-04
Contact Us
No. 88 Wujiang East Road, Jinhua City, Zhejiang Province, China
Tel: +86-579-82326868
Fax : +86-579-82324666
©2023 Zhejiang Jianfeng Group Co., Ltd. Powered by: www.300.cn SEO Business License
SAF Coolest v1.2 设置面板 SHJSS-AHDB-FSSQE-ZSW
无数据提示
Sorry, the current column has no content !
You can view other columns or return to Home Page