NOTE: Primary overcurrent protection is provided by the building circuit breaker. This breaker
must protect against excess currents, short circuits, and earth grounding faults in accordance
with NEC ANSI/NFPA 70.
• Ensure that the polarity of the DC input wiring is correct. Under certain conditions, connections with
reversed polarity might trip the primary circuit breaker or damage the equipment.
• The marked input voltage of –48 VDC for a DC-powered device is the nominal voltage associated
with the battery circuit, and any higher voltages are only to be associated with float voltages for the
charging function.
• Because the device is a positive ground system, you must connect the positive lead to the terminal
labeled RTN, the negative lead to the terminal labeled –48 VDC, and the earth ground to the device
grounding points.
DC Power Disconnection Warning
WARNING: Before performing any of the DC power procedures, ensure that power is
removed from the DC circuit. To ensure that all power is off, locate the circuit breaker
on the panel board that services the DC circuit, switch the circuit breaker to the OFF
position, and tape the device handle of the circuit breaker in the OFF position.
Waarschuwing Voordat u een van de onderstaande procedures uitvoert, dient u te
controleren of de stroom naar het gelijkstroom circuit uitgeschakeld is. Om u ervan te
verzekeren dat alle stroom UIT is geschakeld, kiest u op het schakelbord de
stroomverbreker die het gelijkstroom circuit bedient, draait de stroomverbreker naar de
UIT positie en plakt de schakelaarhendel van de stroomverbreker met plakband in de
UIT positie vast.
Varoitus Varmista, että tasavirtapiirissä ei ole virtaa ennen seuraavien toimenpiteiden
suorittamista. Varmistaaksesi, että virta on KATKAISTU täysin, paikanna tasavirrasta
huolehtivassa kojetaulussa sijaitseva suojakytkin, käännä suojakytkin KATKAISTU-
asentoon ja teippaa suojakytkimen varsi niin, että se pysyy KATKAISTU-asennossa.
Avertissement Avant de pratiquer l'une quelconque des procédures ci-dessous, vérifier
que le circuit en courant continu n'est plus sous tension. Pour en être sûr, localiser le
disjoncteur situé sur le panneau de service du circuit en courant continu, placer le
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Содержание EX4100
Страница 1: ...EX4100 and EX4100 F Switch Hardware Guide Published 2022 11 08 ...
Страница 68: ...Figure 45 Front to Back Airflow Through the EX4100 48P or EX4100 48T Switch Chassis 59 ...
Страница 69: ...Figure 46 Front to Back Airflow Through the EX4100 24MP or EX4100 48MP Switch Chassis 60 ...
Страница 70: ...Figure 47 Front to Back Airflow Through the EX4100 F 24P Switch Chassis 61 ...
Страница 71: ...Figure 48 Front to Back Airflow Through the EX4100 F 24T Switch Chassis 62 ...
Страница 72: ...Figure 49 Front to Back Airflow Through the EX4100 F 48P Switch Chassis 63 ...
Страница 105: ...Figure 62 Clearance Requirements for Airflow and Hardware Maintenance for the EX4100 24MP and EX4100 48MP Switch 96 ...
Страница 106: ...Figure 63 Clearance Requirements for Airflow and Hardware Maintenance for the EX4100 F 24T Switch 97 ...
Страница 107: ...Figure 64 Clearance Requirements for Airflow and Hardware Maintenance for the EX4100 F 24P Switch 98 ...
Страница 108: ...Figure 65 Clearance Requirements for Airflow and Hardware Maintenance for the EX4100 F 48P Switch 99 ...
Страница 209: ...5 CHAPTER Troubleshoot Hardware Troubleshoot the EX4100 and EX4100 F Components 201 ...