X-band 12kW Upmast Magnetron Transceiver
Chapter 7: CONNECTION DETAILS
HBK-2300-3 Issue 2
Page 27 of 40
POWER SUPPLY CONNECTIONS
The power supply must be connected to a dedicated breaker or a DC distribution panel.
The DC input must be connected to the POWER IN terminals.
Do NOT connect additional power switches to the cable providing the power feed to the power
supply.
All power connections between the E70352 and the power source must have appropriate fuse or
breaker protection (see below).
The SCREEN terminals must be connected to a tested and proven ground/ earth.
The system must
NOT
be connected to a positively-grounded power system.
1
POWER OUT (Positive)
–
connect to the RED wire of the
cable.
2
POWER OUT (Negative)
–
connect to the BLACK wire of the
cable.
3
SCREEN
–
connect to the bare
screen (drain) strands of the
cable.
4
SCREEN
–
connect to your
vessels RF ground system.
5
POWER IN (positive)
–
connect
to the positive terminal of the DC
distribution panel or battery
isolator switch.
6
POWER IN (negative)
–
connect
to the negative battery terminal.
7
Not used in this application
8
Not used in this application
9
Not used in this application
7.4
Breaker and fuse ratings
All power connections between the E70352 and its power source must be protected by a thermal
circuit breaker or fuse, fitted close to the power connection. The connection from the output of the
E70352 to the transceiver does not require a fuse or circuit breaker.
If you do not have a thermal circuit breaker or fuse in your power circuit (fitted to the DC distribution
panel, for example) you MUST fit an in-line breaker or fuse to the positive wire of the power cable.
The following table provides suitable ratings for battery isolator switches, circuit breakers and fuses.
Power supply
Device
12 kW scanner
12 volt
Isolator switch
30 amps (minimum rating)
Thermal breaker
15 amps
Fuse
20 amps
24 volt
Isolator switch
15 amps (minimum rating)
Thermal breaker
8 amps
Fuse
10 amps