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1、Edition1.02025-04INTERNATIONALSTANDARDNORMEINTERNATIONALEElectricalrelays-Testsandmeasurements-Part56:BallPressuretestRelaiselectriques-Essaisetmesurages-Part56:EssaiaIabilleTHlSPUBLICATIONISCOPYRIGHTPROTECTEDCopyright2025IEC,Geneva,SwitzerlandAllrightsreserved.Unlessotherwisespecified,nopartofthisp
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15、lrelays-Testsandmeasurements-Part56:BallPressuretestRelaiselectriques-Essaisetmesurages-Part56:EssaiaIabilleINTERNATIONALELECTROTECHNICALCOMMISSIONCOMMISSIONELECTROTECHNIQUEINTERNATIONALEICS29.120.70ISBN978-2-8327-0351-9Warning!Makesurethatyouobtainedthispublicationfromanauthorizeddistributor.Attent
16、ion!Veuillezvousassurerquevousavezobtenucettepublicationviaundistributeuragree.RegisteredtrademarkoftheInternationalElectrotechnicalCommissionMarquedeposeedeIaCommissionElectrotechniqueInternationaleCONTENTSFOREWORD31 Scope52 Normativereferences53 Termsanddefinitions54 Testprocedure54.1 Purpose54.2 Procedure64.2.1 Pre-con
