Data and information technology - OBO Bettermann
Data and information technology - OBO Bettermann Data and information technology - OBO Bettermann
Terms for HF technology and installation instructionsPlanning aid, surge protection of data and information technologyCut-off frequency f gThe cut-off frequency f gdescribesthe frequency-dependent behaviourof the arrestor. Capacitiveand/or inductive component propertiesensure signal damping athigher frequencies. The criticalpoint is described as the cut-offfrequency f g. From this point onwards,the signal has lost 50% (3dB) of its input power. The cut-offfrequency is determined accordingto certain measuring criteria. Usually,in the absence of any values,the cut-off frequency relates to socalled50 Ω systems.Installation instructionsThe surge protection device mustbe connected as close as possibleto the device to be protected. Thehousing of the device to be protectedshould if necessary be definedas a local earthing point. Inaddition, care should be taken toensure short PE line distancesfrom surge protection device toearthing point (housing) − linelength max. 0.5 m.Limit frequency, 1 = |A|, 2 = 3 dB, 3 = f g, 4 = fInstallation instructions: 1 = ISDN, 2 = Net Defender02 TBS-Katalog_2010_Neuer_Stand / en / 30/03/2010 (LLExport_00986)46 OBO TBS
Equipotential bonding of data cables02 TBS-Katalog_2010_Neuer_Stand / en / 30/03/2010 (LLExport_00986)Planning aid, surge protection of data and information technologyEquipotential bonding of data cablesIn contrast to energy technology,data technology has lengthwiseand transverse voltages, which -must be minimised using suitablearrestors with voltage-limiting components.To achieve low protection levels,these surge protection devices -must be included in the equipotentialbonding via the shortest route.Long cable routes should beavoided. The best solution is localequipotential bonding.The inclusion of the shields is alsoof key importance. Completeshield action against capacitiveand inductive coupling can only beeffective when the shield is includedwith low impedance on bothsides in the equipotential bonding.1 Device to be protected / telecom line2 Direct connection to equipotential bonding (preferred)3 Gas discharge arrestor (indirect shielding)4 Gas discharge arrestor5 Connection to equipotential bonding6 Equipotential bonding rail7 Telecommunications cable8 Electrical power cable9 Surge protection device (energy technology)10 Conductive shield of the data cableTBSOBO47
- Page 1: TBS | Catalogue 2010/2011Transient
- Page 5 and 6: Contents, planning aidsBasic princi
- Page 7 and 8: Planning aid, generalinformation02
- Page 9 and 10: Negative and positive chargesStudie
- Page 11 and 12: What pulse forms are there?Planning
- Page 13 and 14: Causes of surgesSwitching surges in
- Page 15 and 16: Zone transitions and protective dev
- Page 18 and 19: 38 OBO TBS
- Page 20 and 21: Standards, data and information tec
- Page 22 and 23: Network topologiesBus networksIn a
- Page 24 and 25: Installation instructions, lightnin
- Page 28 and 29: Terms and explanations for PC inter
- Page 30 and 31: Selection aid, surge protection for
- Page 32 and 33: Selection aid, surge protection for
- Page 34 and 35: Selection aid, surge protection for
- Page 36 and 37: Selection aid, surge protection for
- Page 38 and 39: Test marksLightning current-testedL
- Page 40 and 41: Metallic materialsAlu—AluminiumVA
- Page 42 and 43: Tested lightning protection compone
- Page 44 and 45: The little A to Z of surge protecti
- Page 46: 212 OBO TBS02 TBS-Katalog_2010_Neue
- Page 49: Surge protection for telecommunicat
- Page 52 and 53: Surge protection for LSA-Plus syste
- Page 56 and 57: Coaxial protection devices for send
- Page 58 and 59: Surge protection for data technolog
- Page 60 and 61: Surge protection for serial interfa
- Page 62 and 63: Surge protection for data technolog
- Page 64 and 65: MCR protection for 2-pin for power
- Page 66: MCR protection for 2-pin for power
- Page 70: MCR protection for two-core systems
Equipotential bonding of data cables02 TBS-Katalog_2010_Neuer_St<strong>and</strong> / en / 30/03/2010 (LLExport_00986)Planning aid, surge protection of data <strong>and</strong> <strong>information</strong> <strong>technology</strong>Equipotential bonding of data cablesIn contrast to energy <strong>technology</strong>,data <strong>technology</strong> has lengthwise<strong>and</strong> transverse voltages, which -must be minimised using suitablearrestors with voltage-limiting components.To achieve low protection levels,these surge protection devices -must be included in the equipotentialbonding via the shortest route.Long cable routes should beavoided. The best solution is localequipotential bonding.The inclusion of the shields is alsoof key importance. Completeshield action against capacitive<strong>and</strong> inductive coupling can only beeffective when the shield is includedwith low impedance on bothsides in the equipotential bonding.1 Device to be protected / telecom line2 Direct connection to equipotential bonding (preferred)3 Gas discharge arrestor (indirect shielding)4 Gas discharge arrestor5 Connection to equipotential bonding6 Equipotential bonding rail7 Telecommunications cable8 Electrical power cable9 Surge protection device (energy <strong>technology</strong>)10 Conductive shield of the data cableTBS<strong>OBO</strong>47
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