Air-conditioning complaints dropped by 57.03% year-on-year this summer

Air-conditioning complaints dropped by 57.03% year-on-year this summer

According to statistics from the Changzhou Industry and Commerce Department, as of the end of August, the Consumer Reporting and Accepting Center in Changzhou City this summer received a total of 55 complaints from consumers about air-conditioning, which was a decrease of 57.03% from 128 last year. The reason for this is that last summer, the continuous high temperatures that occurred once in several decades caused air-conditioning complaints to soar to the highest point in the history of 128, and this year is the cool summer once in decades.

According to analysis, from the type of consumer complaints air-conditioning this year, split-type air-conditioning complaints a total of 40, accounting for 72.73% of the total number of complaints; from the content of consumer complaints, the main problems focused on the maintenance of the time, cooling effect Poor, inadequate installation, the amount of complaints in the above three cases were 14, 12, and 11 respectively. Such as Liyang consumer history in August in an electrical mall in Xiangyang City, bought a 3-bit brand cabinet air conditioner, when the installer in the vacuum pumped only less than 5 minutes on the rush to start debugging, Shimou then installed The operation is too arbitrary, according to the provisions of three air-conditioning vacuum pumping time at least 20 minutes or more, then Ms. Shi called the mall to request a return policy, shopping mall officials recognized the installation of the master is not properly installed, but did not give a clear attitude on the results of the treatment, After the intervention of the industrial and commercial department, the mall replaced an outdoor unit with Shimou, and Shi expressed his agreement. Another golden altar consumer, Zhang, purchased a brand of air conditioner in an electrical mall in Dongtan Street, Jintan, in August last year. When it was used in July this year, it found that the air-conditioning was not cooled. During the service, he called the merchant for several times to undertake the maintenance obligation, but the business had been Do not deal with, on the grounds that summer air conditioning maintenance peak, to wait patiently Zhang, the business sector after receiving the complaint, three days later to help repair it in place.

The industry and commerce department stated that in accordance with Article 23 of the newly revised “Consumer Protection Law” of this year, air conditioners provided by operators, disputes caused by consumers’ discovery of defects within six months of use shall be borne by the operator. The burden of proof, which no doubt allows consumers to take the initiative in consumer rights protection.

Applications:

The Grounding Transformer is a kind of auxiliary transformer that used to offer an earth point for the Delta-Star system. They are typically used for providing a path to ground for unbalanced load current and for fault currents on system where a suitable ground is otherwise not available.

Design:

The grounding transformers are generally designed with one of the two configurations: Zig-Zag (Zn) with or without an auxiliary winding or a Wye (Ynd) with a delta connected secondary. The Zig-Zag connection is preferred as it is more cost effective and have smaller size than the Delta-Wye unit. For more safety, neutral earthing resistors (NER) are often used in conjunction with the grounding transformer to limit neutral ground fault current magnitude. The rated voltage of the NER should be equal to the line to ground voltage of the grounding transformer. The current rating and duration should match the grounding transformer 


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Grounding Transformer

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