Electrical Connections; Wire Sizing - SkyStream 3.7 Owner's Manual

12

2-1-2 Electrical Connections

CAUTION – Be sure power is turned off when
making electrical connections.
G
Position Skystream on its side to access the wire terminals.
G
Remove approximately 2 inches (5 cm) of protective
sheathing from cable and strip approximately 0.375 inches
(1 cm) of insulation off wire leads.
G
Pass cable through strain relief cover so approximately
1 inch (2.5 cm) of cable sheath protrudes through as
shown in Fig. 4 at right.Tighten strain relief clamp to
secure cable.
G
Connect the red, black, and white wires to the matching
color coded terminals on Skystream yaw assembly.
Connect the green or bare copper wire to the green ter-
minal.Tighten each screw to 20-25 inch-lbs (2.3-2.5 N-m).
Before attaching the strain relief cover, test the electrical con-
nections by turning on power and measuring voltage at the
yaw terminals. Additionally, with AC power switched on, wait 5-
7 minutes and attempt to rotate the blade shaft.The shaft
should be noticeably easier to rotate.Turn off power and
Skystream should revert to "brake" mode. If Skystream fails this
test, check all connections and repeat test.Test must be passed
before proceeding.
G
Turn power off and secure
strain relief cover using
four M5-0.8 x 12 socket
head screws and split
lockwashers. Use Loctite
242 and torque screws to 20-25 inch-lbs (2.5 N-m).
Wiring Symbol Definitions
L L 1 1 = Line 1, AC Line Voltage, Black Wire
L L 2 2 = Line 2, AC Line Voltage, Red Wire
N N = AC Neutral, White Wire
G G = Gnd. = AC Ground, Green or Bare Wire
Indicates AC Ground
Caution: Make sure AC
power is switched OFF
before proceeding with
installation
®
Ground: green
or bare copper
Neutral: white
Fig. 4 Wire run to the yaw connection

2-1-3 Wire Sizing

Measure distance from AC Service panel to Skystream (be sure to
include tower height). Refer to the accompanying wire chart and
select the appropriate gauge wire. Indicated wire sizes will include
length from top of tower to connection at main utility panel.
Distance AC Service Panel AWG
to Tower Top American Wire Gauge
315 feet (92 m) 8 AWG
198 feet (56 m) 10 AWG
125 feet (37 m) 12 AWG
79 feet (23 m) 14 AWG
U U s s e e c c o o p p p p e e r r c c o o n n d d u u c c t t o o r r s s o o n n l l y y - - M M i i n n i i m m u u m m w w i i r r e e t t e e m m p p e e r r a a t t u u r r e e r r a a t t i i n n g g i i s s 7 7 5 5 ° ° C C ( ( 1 1 6 6 7 7 ° ° F F ) )
Line 1: black
Line 2: red
Metric Wire Size
(mm2)
2
10 mm
2
6 mm
2
4 mm
2
2.5 mm