{"id":499,"date":"2022-09-25T17:14:15","date_gmt":"2022-09-25T09:14:15","guid":{"rendered":"https:\/\/kvhipot.com\/?post_type=product&p=499"},"modified":"2024-03-04T15:39:30","modified_gmt":"2024-03-04T07:39:30","slug":"ac-resonance-test","status":"publish","type":"product","link":"https:\/\/kvhipot.com\/pt_pt\/produto\/ac-resonance-test\/","title":{"rendered":"Variable Frequency AC Resonance Test System"},"content":{"rendered":"

Overviews<\/b><\/strong><\/p>\n

KVXZ-270kVA\/270kV Variable Frequency AC Resonance Test System is applied for\u00a0AC dielectric\u00a0test for electric equipment.<\/p>\n

    \n
  1. 10kV\/300mm2<\/sup>cable 3km\u00a0AC withstand test,capacitance\u22641.1265uF,test frequency:30-300Hz, test voltage 22kV, test time 5min;<\/li>\n
  2. 35kV\/300mm2<\/sup>cable 1km\u00a0AC withstand test,capacitance\u22640.1945uF,test frequency:30-300Hz, test voltage 52kV, test time 60min;<\/li>\n
  3. 110kV\/630mm2<\/sup>cable 0.2km\u00a0AC withstand test,capacitance\u22640.0368uF,test frequency:30-300Hz,\u00a0test voltage 128kV, test time 60min;<\/li>\n
  4. 110kV\/63000kVA Transformer AC withstand test,capacitance\u22640.02uF,test frequency:30-300Hz,test voltage below 160kV, test time 1min;<\/li>\n
  5. GIS 110kV, Switching busbar and other substation equipment, AC withstand test,test frequency:30-300Hz, test voltage below 265kV,test time 5min<\/li>\n<\/ol>\n

    Features<\/b><\/strong><\/p>\n

      \n
    • With the function of over-voltage, over-current,\u00a0zero-start, system detune (flashover) protection. Over-voltage, over-current protection value can be set accordingly to user\u2019 need. Flashover protection action whenthe test object\u00a0flash\u00a0over and tester records\u00a0the flashover voltage value for testing analyze.<\/li>\n
    • Small volume, light weight, very suitable for the operationpeople on the spot.<\/li>\n
    • There are three kinds of\u00a0working modes, which is convenient for user choosing according to on-site condition.Working modes : Automatic mode,\u00a0\u00a0Manual mode,\u00a0\u00a0Automatic tuning manual\u00a0boost\u00a0mode.<\/li>\n
    • Data can be storedand printed in different places, and the series numbers are figures which is\u00a0convenient\u00a0for\u00a0identification and searching.<\/li>\n
    • When the device automatically sweeps the frequency, the starting point of frequency can be set arbitrarily in the specified range. Meanwhile, the LCD screen displays the scanning curve, which is convenient for users to directly understand whether the resonance point is found .<\/li>\n
    • AdoptingDSP technology,\u00a0which can\u00a0increase and\u00a0decrease\u00a0functions and updated accordingly to the user\u2019s need, it\u00a0also makes\u00a0the\u00a0human-machine\u00a0interface\u00a0more\u00a0humanized.<\/li>\n
    • Reduced greatly the required power capacitance , resonant equipment power can generate high voltage and large current by using the resonance of resonant reactor and test capacitor. Power can supply the loss power in the system , which only requires 1\/Q of the resonant excitation power during the test .<\/li>\n
    • Reduced greatlyweight and dimension of the equipment . The series resonant power supply not only eliminates the bulky high-power voltage regulator and ordinary high-power frequency test transformer, but also requires the 1\/Q of the resonant excitation power to reduce the weight and dimension of the system, which is generally 1\/10-1\/30 of the common test device.<\/li>\n
    • Improve the output of voltage wave .The resonant power supply is a resonant filter circuit, which can improve the waveform distortion of output voltage and get the good sinusoidal waveform effectively preventing the error breakdown of the harmonic peak to the test object.<\/li>\n
    • Prevent large short circuit current burn fault point. When test object is breakdown in the series resonant state\uff0cthe circuit is detuned immediately and the circuit current drops rapidly\u00a0to the 1\/Q\u00a0of\u00a0normal tested current .The breakdown current increase to dozens of time during power frequency withstand test of transformer. Compared with two test methods , short current and breakdown current is hundreds of times\u00a0different . Resonance test equipment can efficiently find the insulation weakness and large short circuit current burn fault point.<\/li>\n
    • No-recovery over-voltage . When test object is break down , high voltage immediately disappear also immediately extinguished due to the loss reasonance condition. It takes a long time to recovery flashover voltage before cutting off the power .This voltage recovery process is a kind of energy accumulation of intermittent oscillation process, there is no any recovery over-voltage in the process .<\/li>\n<\/ul>\n

      \u00a0<\/b><\/strong><\/p>\n

      Test equipment combination mode<\/b><\/strong><\/p>\n\n\n\n\n\n\n\n\n
      Combinations\u00a0of equipment<\/p>\n

       <\/p>\n

      Tested specification<\/td>\n

      		Reactors\uff0844kVA\/22kV, 4 sets \uff09<\/td>\nExcitation transformer output selection<\/td>\nTest voltage (kV)<\/td>\n<\/tr>\n
      Cable 10kV\/300mm\u00b2: length 3km<\/td>\n3\u00a0reactors in parallel<\/p>\n

      (Three of them are grounded)<\/td>\n

      		4kV<\/td>\n\u226422kV<\/td>\n<\/tr>\n
      Cable 35kV\/300mm\u00b2: length 1km<\/td>\n2 in series and 3 groups in parallel<\/td>\n4kV<\/td>\n\u226452kV<\/td>\n<\/tr>\n
      Cable 110kV\/630mm\u00b2: length 0.2km<\/td>\n3 in series and 2 groups in parallel<\/td>\n4kV<\/td>\n\u2264128kV<\/td>\n<\/tr>\n
      Power transformer 110kV\/63000kVA<\/td>\n4 reactors in series<\/td>\n8kV<\/td>\n\u2264160kV<\/td>\n<\/tr>\n
      110kV GIS, switchgear, etc.<\/td>\n6 reactors in series<\/td>\n16kV<\/td>\n\u2264265kV<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"

      KVXZ-270kVA\/270kV Variable Frequency AC Resonance Test System is applied for\u00a0AC dielectric\u00a0test for electric equipment<\/p>","protected":false},"featured_media":500,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":""},"product_cat":[25],"product_tag":[],"_links":{"self":[{"href":"https:\/\/kvhipot.com\/pt_pt\/wp-json\/wp\/v2\/product\/499"}],"collection":[{"href":"https:\/\/kvhipot.com\/pt_pt\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/kvhipot.com\/pt_pt\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kvhipot.com\/pt_pt\/wp-json\/wp\/v2\/media\/500"}],"wp:attachment":[{"href":"https:\/\/kvhipot.com\/pt_pt\/wp-json\/wp\/v2\/media?parent=499"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/kvhipot.com\/pt_pt\/wp-json\/wp\/v2\/product_cat?post=499"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/kvhipot.com\/pt_pt\/wp-json\/wp\/v2\/product_tag?post=499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}