Bird Technologies 8578A100GIG - Manual (Page 11)

Chapter 1
Introduction
General The Model 8578A100GIG is an air cooled, high powered
Termaline Load resistor designed to be efficient, rugged and
trouble free. It is designed to be forced air cooled and is ca-
pable of dissipating RF line power up to 10 kW, with 1000
ft
3
/min (28.32 m
3
/min) or more of externally supplied cool-
ing air through it. Virtually maintenance free and simple to
operate, this unit should provide years of trouble free opera-
tion yet is field repairable in the event of failure of the load
resistor or other components. The RF section is composed of
a parallel combination of resistors.
Description The unit is rectangular in shape. It is supported on three
sides by four bumper feet on each side. The RF input con-
nector is located on the front panel of the unit. Perforated
side panel grilles on two sides of the unit allow for direct
forced air cooling of the resistors. The transmitter interlock
is located on the front panel of the unit. The rear and side
panels are removable for servicing. Refer to Figure 1, Out-
line Drawing.
WARNING
Do not insert a screwdriver or any thin metal objects
through the perforated cooling air grilles while the
load is in operation. The power within the unit could
arc over and will cause serious injury to personnel and
damage to the unit.
1