Broadcast Electronics FM-5T, Руководство пользователя

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2-15
WARNING
WARNING
ENSURE PRIMARY POWER IS DISCONNECTED BE
FORE PROCEEDING.
WARNING
WARNING
ENSURE AN EARTH GROUND CONDUCTOR IS SE
CURELY CONNECTED TO THE TRANSMITTER
GROUND SYSTEM.
2-94. FM-5T. A three phase source of 196V to 252V ac 50 Hz or 60 Hz or 341 to 435V ac 50 Hz at
40 Amperes per phase is required for the FM-5T transmitter ac input. Ensure the power
source is supplied from an acceptable ac transformer configuration (refer to PRIMARY AC
POWER). For operating safety, the power source must be routed to the transmitter
through a fused power disconnect (refer to Figure 2-6).
2-95. Refer to Figure 2-6 and connect the 40 Ampere three phase service to TB1 on the trans
mitter base-plate through a fused service disconnect. Ensure a utility company ground
conductor is securely connected to the transmitter ground system. For a three phase 380V
WYE service, ensure the neutral wire is connected to ac input terminal TB1-4.
WARNING
WARNING
ENSURE PRIMARY POWER IS DISCONNECTED BE
FORE PROCEEDING.
WARNING
WARNING
ENSURE AN EARTH GROUND CONDUCTOR IS SE
CURELY CONNECTED TO THE TRANSMITTER
GROUND SYSTEM.
2-96. FM-5TS. A single phase source of 196V to 252V ac, 50 or 60 Hz at 70 Amperes is required
for the FM-5TS transmitter ac input. For operating safety, the power source must be
routed to the transmitter through a fused power disconnect (refer to Figure 2-7).
2-97. Refer to Figure 2-7 and connect the 70 Ampere service to TB1 on the transmitter base-
plate through a fused service disconnect. Ensure a utility company ground conductor is
securely connected to the transmitter ground system and the neutral wire is securely con
nected to TB1-2.
2-98.
INITIAL CHECKOUT.
WARNING
WARNING
ENSURE PRIMARY POWER IS DISCONNECTED BE
FORE PROCEEDING.
2-99. Ensure that the transmitter is completely installed, the transmitter is connected to a suit
able RF load, and the station monitors are connected to the MON port in the RF low-pass
filter output. The MON port provides a harmonic-filtered RF sample which is approxi
mately 40 dB below the carrier power level. Check the following:
A. Ensure primary power is correctly wired.
B. Ensure all ground connections are secure.
C. Ensure all RF connections are secure.
D. Ensure all connections at terminal boards are secure.
E. Rotate the blower and fans by hand to ensure no obstructions are present.
F. Using an insulator, check relay operation manually to be certain all have free
movement.