
Chapter 37 Hardware procedures 283
Passport 7400 Hardware Installation, Maintenance, and Upgrade 5.2S1
Installing ferrite beads onto dc power cables
Install ferrite beads onto the dc power input cables of a Passport 7400 switch
to ensure that the cables comply with the Class B containment of
electromagnetic interference (EMI) standard. (ferrite bead kit NTJS6381)
Prerequisites
•
Ensure the power cables are not too large for the beads. The ferrite bead
kit, which contains 3 ferrite beads and 6 tie-wraps, accommodates cable
pairs up to 2.5 cm (1 inch) in diameter. This includes cables sizes from
No. 10 to 6 AWG (5.26 mm2 to 13.30 mm2 or 4.0 mm2 to 16 mm2 for
the full acceptable range).
•
Before installing the ferrite beads, the power input cables must be
installed and connected to the switch.
WARNING
Risk of injury or equipment damage by electricity
If the barrel of any power input cable lug shows exposed
metal near the edge of the insulation panel, that is, an
uninsulated portion, contacting that metal risks
electrocution or equipment damage. If any lug barrel is
uninsulated, you must power down the switch and its
upstream power feed and fully insulate the lug barrels
before adding any ferrite beads.
WARNUNG
Verletzungsgefahr oder Geräteschäden durch
Elektrizität
Falls die Hülse eines Stromeingangskabelschuhs am
Rand der Isolierverkleidung blankes Metall, also einen
unisolierten Bereich, aufweist, besteht beim Berühren
dieses metallenen Bereichs Lebensgefahr bzw. es
können Geräteschäden auftreten. Bei einer unisolierten
Hülse müssen Sie den Schalter sowie dessen Upstream-
Stromzufuhr ausschalten und die Kabelschuhhülsen
vollständig isolieren, bevor Sie Ferrit-Dämpfungsperlen
einsetzen.
Содержание Passport 7400
Страница 1: ...Passport 7400 Hardware Installation Maintenance and Upgrade 241 7401 240 ...
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Страница 6: ...6 Publication history 241 7401 240 5 2S1 ...
Страница 28: ...28 About this document 241 7401 240 5 2S1 ...
Страница 32: ...32 Chapter 1 3 slot Passport switch installation 241 7401 240 5 2S1 ...
Страница 42: ...42 Chapter 3 5 slot Passport switch installation 241 7401 240 5 2S1 ...
Страница 60: ...60 Chapter 5 16 slot Passport switch installation 241 7401 240 5 2S1 ...
Страница 66: ...66 Chapter 6 16 slot Passport switch shelf replacement 241 7401 240 5 2S1 ...
Страница 74: ...74 Chapter 9 Alarm hardware replacement 241 7401 240 5 2S1 ...
Страница 80: ...80 Chapter 11 BITS termination panel replacement 241 7401 240 5 2S1 ...
Страница 84: ...84 Chapter 12 Cabinet installation 241 7401 240 5 2S1 ...
Страница 88: ...88 Chapter 13 Cable replacement 241 7401 240 5 2S1 ...
Страница 102: ...102 Chapter 18 Ethernet cable replacement 241 7401 240 5 2S1 ...
Страница 106: ...106 Chapter 19 External timing addition 241 7401 240 5 2S1 ...
Страница 110: ...110 Chapter 20 Failed FP cable replacement 241 7401 240 5 2S1 ...
Страница 132: ...132 Chapter 25 Function processor decommissioning 241 7401 240 5 2S1 ...
Страница 152: ...152 Chapter 32 Power cable replacement 241 7401 240 5 2S1 ...
Страница 156: ...156 Chapter 33 Power supply addition 241 7401 240 5 2S1 ...
Страница 160: ...160 Chapter 34 Power supply replacement 241 7401 240 5 2S1 ...
Страница 200: ...200 Chapter 37 Hardware procedures 241 7401 240 5 2S1 Figure 61 Installing a rear cover on a 5 slot Passport switch ...
Страница 228: ...228 Chapter 37 Hardware procedures 241 7401 240 5 2S1 Figure 77 16 slot Passport switch shelf assembly PPT 0892 001 AA ...
Страница 412: ...412 Chapter 37 Hardware procedures 241 7401 240 5 2S1 ...
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