Bird Technologies 8578B150 Series - Manual (Page 13)

1
Chapter 1 Introduction
General
The Models 8578A100 and 8578A150 are air cooled, high powered Termaline
Load resistors designed to be quiet, rugged and trouble free. They are rigid RF
line terminations used as dummy antennas. They are forced air cooled and are
capable of dissipating RF line power up to 10 or 15 kW, depending on the
model. Virtually maintenance free and simple to operate, these units should
provide years of trouble free operation yet are field repairable in the event of
failure of the load resistor or other components. The RF sections are composed
of a parallel combination of resistors.
Description
The units are rectangular in shape. They are supported on the bottom by four
bumper feet. The RF input connector is located on the top center of the unit.
Perforated side panel grilles at the top and bottom of the units allow for direct
forced air cooling of the resistors. The AC power receptacle, ON/OFF switch
and transmitter interlock are located on the front panel of the unit. The rear
and side panels are removable for servicing. Refer to Figure 1.
Items Supplied
The following items are supplied with the 8578A and 8578B:
•
Manuals CD
•
Single pole fusedrawer, for 115V operation (installed)
•
Fuse, 6.3A, T, for 115V operation (installed)
•
Two pole fuse drawer, for 230V opertation
•
2 Fuses, 3.15A, T, for 230V operation
WARNING
Do not insert any thin metal objects through the perforated cooling air
grilles while the load is in operation. Otherwise, the power within the unit
could arc over and cause serious bodily injury and/or damage to the unit.