IBUC Operation Manual
Terrasat Communications, Inc.
Rev. A
7-10
Ensure AC power is off prior to disconnecting PSU
power cord. Turn off AC power to the unit using
installed circuit breaker or similar disconnecting
device.
After turning AC power source off, disconnect
Power Cord from PSU before servicing the unit.
The IBUC’s can be supplied directly through the external power connector (J3). Refer to
the label on the unit to determine whether 24 or 48 Volts is required. Ensure that the
24VDC input voltage is between 20 and 28VDC and that the 48VDC input is between
37 and 60VDC.
For IBUC’s with a rated power of 16 watts or greater, an outdoor power supply is
required. Terrasat offers a 400W outdoor PSUI (good for all power levels up to 40W C-
band or 25W Ku-band) and a 700W outdoor PSUI (good for all power levels up to 80W
C-band and 40W Ku-band). Power supplies have an auto ranging AC front end that will
work with both 115VAC and 230VAC.
All outdoor PSUI’s are equipped with a detachable AC power connector. When
connecting the AC connector to the AC source the wiring must include a 15 or 20 amp
circuit breaker. A disconnect device that is readily accessible must also be provided.
Any outdoor AC connection should be made using suitable connectors or boxes with an
IEC protection class of at least IP65.
The outdoor PSUI is shipped with mating connectors for the AC mains power cable. In
order to remain compliant with European Low Voltage Directive (EN 60950), use a
power cable that meets IEC 60227 requirements such as HAR Cable Designation H03
VV-F or H03 VVH2 -F and/or others with water resistance for outdoor applications.
Power cable plugs must also meet national/local standards.
If a circuit breaker is not easily accessible as a disconnecting device, the input
connector will be the disconnecting device. In this case, the socket-outlet must be
installed near the equipment and must be easily accessible for pluggable equipment.
NOTE: AC transients and surges can cause data transmission errors and
loss of sync in the modem and/or the ODU. Proper precautions should be
taken to ensure uninterrupted service.
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