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  • It is measured with a definite target(Part 2) 17. Technique of measuring three-phase three-wire current with a clamp ammeter Three - phase three - wire current is measured by a clamp ammeter.Kirchhoff a certain rate is obtained by measuring a technique.The clamp mouth is connected with a wire to read the current value of the phase. Put two wires into the clamp mouth to read the third phase cu...

  • It is measured with a definite target(part 1) 1. Use the multimeter correctly Use multimeter correctly and be familiar with dial before use.Two zero adjusters, gently rotate to zero.Correctly select the terminal post and insert the red and black marker into the right hole. The transfer switch should rotate the gear, and the gear should be selected correctly.Choose the proper range to make the meas...

  • Test pen, lamp inspection judgment 1. Correct holding method when using low-voltage measuring pen Commonly used low - voltage measuring pen, master the test two - grip method.Pen type measuring pen, the palm touch pressure metal clip.Hold the pencil in the middle between your index and middle fingers. Screwdriver type measuring pen, index finger press tail metal cap.The middle finger and ring fing...

  • Sensory diagnosis is quick and easy 1. Judgment of abnormal sound of power transformer Normal operation of transformer, clear and uniform hum.If there is any abnormal sound, judge the cause of the fault point.A buzzing sound of high pitch, overload or overvoltage. Intermittent violent gurgle, single - phase load increased sharply.There was a jingle of hammering and the threaded screw was loose.The...

  • In the field of industrial automation, there are many century-old enterprises, such as Siemens, GENERAL Electric, Bosch Group, Schneider Electric and other famous enterprises. From digital factory, industrial Internet to Industry 4.0, these enterprises have long been industry leaders.So who will be the future winners in this new wave of revolutionary development?Fortune magazine has released a new...

  • Bjorn Rosengren, ABB's newly appointed CEO, told the media that he is determined to decentralize the authority of ABB in order to improve the company's performance. ABB's products range from circuit breakers to Marine motors, but the company has been held back by an overly complex business model, says Bjorn Rosengren. "I do intend to further decentralize," he says. "so far we have only discussed f...

  • In 2020, rare events occurred frequently in the capital market, ranging from four consecutive circuit breakers in the us stock market to a rare "negative oil price" breakout. The bank of China failed to bottom out its customers, and the issue of bank debt was hotly debated.The fluctuation of the capital market has caused the "panic" in the crude oil market, and the oil industry and industrial chai...

  • Us chipmaker Cypress issued a statement on Monday announcing that "Cfius has completed its review of the Cypress/Infineon merger and determined that there are no national security issues to be resolved." Shares in Infineon jumped 6% in early European trading on Tuesday after the European chipmaker's acquisition of Cypress passed a us national security review. On March 6, the committee on inward in...

  • Recently,COVID-19 epidemic has swept the world and is a great threat to human health.It also had a huge impact on the global economy.At this difficult time, NSE will do our best to work with all our customers to overcome the difficulties. From April 15th to April 30th,all customers who buy products from our company, a box of 50 pcs masks will be donated for each order amount of $1500,and so o...

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