Nortel Passport 15000 Preparation Manual page 139

WARNUNG
Verletzungsgefahr
Die Erdung des Gestells ist eine Schutzerdung und muß
zuverlässig und dauerhaft mit der Netzerde verbunden
sein. Bilden Sie keinesfalls eine Kaskadenerdung, das
heißt, erden Sie nicht ein Gestell am anderen.
The methods of grounding to the ground window vary. However, in all
methods at the point where a C-tap is to ground a cable between the NTRU04
frame and the ground window cable, ensure the cable runs from the frame to
the tap in the same direction as the flow of ground. That is, the end of the cable
at the tap points in the direction of ground flow. The minimum cables size to
ground the frame is 6 AWG (13.3 mm
not to exceed a 90-degree bend. Ensure the cable labeling remains at both
ends of the cable. See the figure "Grounding an NTRU04 frame to a ground
window" (page 140).
With the polyvalent (A0834143) and ETSI (A0834143) power-and-ground
assembly, the mounting bracket covers the normal grounding points on the
rear of the NTRU04 frame. The alternative grounding point to the frame from
the site ground window is at the top front of the NEBS 2000 frame on the
silvery grounding strip.
Passport 15000, 20000 Site Requirements and Preparation Guide
Chapter 4 Power and grounding preparation 139
2
). The "S" curve of the cable at rest is
5.2S2