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Usměrňovačové systémy DC-Měniče Střídače UPS systémy ...

Vydal: BENNING CR, s.r.o. Autor: BENNING

Strana 198 z 247

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For measuring, the test cable (probe) connected accessible metal parts the test sample and the earthing contact the mains plug means the alligator clip. Connect the mains plug the "test socket" of the appliance tester. - Mains connection cables (also enclosed device connecting cables) must not show any external defects between the connecting point the device and the connecting point the mains; - Strain relief and bending protection (if applicable) the mains connection cable must firmly attached and efficient; C ctio test For the first test measurement, the tester starts connection test determine, whether dangerous contact voltage applied, whether test sample connected and that there short-circuit. Only after troubleshooting, the test can repeated right from the beginning. After a positive connection test, the measurement started. open switch), information message displayed.BENNING BENNING 750 A 10. The "PE" test socket firmly connected with the earthing contact the test socket. For measuring device leakage current for the patient leakage current etc. The order the individual measurements (tests) has be observed absolutely, because the measurement has stopped immediately case failed test. according DIN VDE 0701-0702.1 ctive Test ctive esistan ce) pe This function intended measure the protective conductor resistance RPE(devices protection class I).g. necessary, use the measuring jacks "PE" and "L/N" which are connected in parallel the "test socket". 08/ 2012 58 . Another connection test will only started when the "Visual Inspection" menu has been passed through once again. During the pause, the test socket will remain live! 10. Moreover, has determined which protection class (protective measure) the test sample corresponds and which tests mea­ surements (VDE regulation, manufacturer's accompanying documents, depending the type of the test sample) have carried out. necessary, markings have corrected after modi­ fications. For measurements earth (test samples protection classes II) and for direct measurement the leakage current, measuring shunt the milliohm range integrated into the cable for connection. Due correspondingly required measuring arrangement, the "Sonde Probe" jack intended for measuring testing the absence voltage or the contact current etc. according DIN VDE 0751, the specified measuring arrangement "MD" (DIN VDE 0751-1) connected the same jack ("Sonde Probe"). A Attention! Pressing the se> button will stop the measurement. The additional test sockets "L/N" are only connected 'Test Socket" mode. At the beginning test (after requesting the corresponding VDE regulation and protection class), the "Visual Inspection" menu appears the display. Measurement made with testing current +/- 200mA according DIN VDE 0701­ 0702, VDE 0751-1 testing current 10A (formerly: DIN VDE 0701 T260). E xam les licatio visu ctio are: - Melt inserts fuses must comply with the parameters requested the manufacturer (e.g. O ividual steps: - Visual inspection - Protective conductor test (if the protective conductor exists) - Insulation measurement (if technically possible) - Measurement leakage current, protective conductor current and contact current - Moreover: safe isolation; proof further protective measures; inscriptions; functional test; analysis, evaluation and documentation If not directly possible isolate the test sample from the electrical systems, proceed follows: - visual inspection - protective conductor resistance measurement for devices protection class and - contact current measurement accessible protective parts devices protection class II as well accessible parts devices protection class which are not connected the protective conductor! T resp ective tep and easuring depend test sam ple!A - There must not any signs overload improper use; - not allowed make any improper interventions and modifications; - Any contamination and corrosion affecting safety must removed cleaning. case negative connection test (e. arry anu eas rem Tests First all, each test begins with inspection the test object. nominal current intensity and fusing characteristics); - Air filters (if requested) must built in; - Cooling apertures must not blocked; - Protective covers requested the manufacturer must used and must attached proper condition and due form; - Cooling fins must not blocked; - The markings provided the manufacturer, particularly those contributing safety (warning symbols, characteristic data fuse holders, switch positions isolator switches and similar), must available and perfectly legible. F reason, tely ece ssary res elect rre regulation fo easu rem tests!A V isu inspection Important parts the device contributing its safety must neither visibly damaged nor obvi­ ously inappropriate for the device. Confirm with continue with the test! The tester provided with switchable test socket contact the test sample. This particularly applies insulation and insulating parts which are accessible during repair, modification test well for housings devices with protective insulation (protection class II)