Nautel XR3-PREINST, Руководство по предварительной установке

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XR6/XR3 Pre-installation Manual Electrical requirements
Page 5-4 Issue 3.0 2009-07-15
Table 5.3: Ac power wiring requirements
Power @ 100% modulation:
Station reference ground
Install a station reference ground that provides a continuous, low impedance path to the earth.
If a surge protector is not being used, connect the transmitter cabinet's designated safety ground
point, the shield of the coaxial feedline, and the ground connection of the power source directly to
the station reference ground using a copper strap that is at least 10 cm (4 in.) wide. Ensure that the
site’s ac service entrance ground is directly connected to the station reference ground outside the
transmitter building.
If a surge protector is being used, connect the transmitter cabinet's designated safety ground point,
the shield of the coaxial feedline, and the ground connection of the power source directly to the surge
protector, using a 10 cm (4 in.) copper strap. Connect the surge protector to the station reference
ground using a copper strap that is at least 10 cm (4 inches) wide.
Ac power can enter the transmitter cabinet through the right rear side of the top panel (see Figure 3.2
on page 3-3 )or the rear side of the bottom panel (see Figure 3.3 on page 3-4 ).
Ensure that the transmitter site’s grounding rods are adequate. For more information about electrical
grounding protection, see the
Nautel Site Protection Manual.
Cable
Temperature
Rating
60
o
C 75
o
C 90
o
C
Voltage Amps/Phase
Wire Size: AWG
6 6 6 208 V ac, 3-ph 32 (XR6), 16 (XR3)
6 8 8 240 V ac, 3-ph 27 (XR6), 13.5 (XR3)
10 10 10 380 V ac, 3-ph 17 (XR6), 8.5 A (XR3)
4 4 4 220 V ac, 1-ph 59 (XR6), 29.5 (XR3)