Dc Power Disconnection Warning - Juniper JSA7500 Secure Analytics Hardware Manual

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• The marked input voltage of –38 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 –38 VDC, and the earth ground to the device
grounding points.
RELATED DOCUMENTATION
General Electrical Safety Guidelines and Warnings | 47
Prevention of Electrostatic Discharge Damage | 49
AC Power Electrical Safety Guidelines | 51

DC Power Disconnection Warning | 54

DC Power Grounding Requirements and Warning | 56

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.
Attention 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
54

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