Raymarine Radar Scanner Owner's Manual

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Chapter 1: Overview
17
24 V and 32 V Systems - 10kW scanners
10 kW open array scanners can use any combination of inter-unit 
cable up to a maximum length of 35 m. However, these systems use 
considerable power and installations should be planned to minimize 
all cable lengths. Refer to the tables on page 1-19, Max. Extension 
Power Cable Lengths (m) - 10 kW Scanner.
Power cable
The open array scanner systems are intended for use on ships’ DC 
power systems operating in the following ranges:
4 kW
10.7 to 44 V DC range (that is, 12 V, 24 V and 32 V systems)
10 kW
20 to 44 V DC range (that is, 24 V and 32 V systems).
CAUTION:
10 kW open array scanner systems cannot be used directly with 
12 V systems; they require a 12 V to 24 V converter rated to 
180 W. Contact your authorized Raytheon dealer or distributor 
for details.
Open array scanners draw considerable power from the vessels 
power source, especially in high wind speeds. It is essential for 
reliable operation that the unit is supplied with a low resistance power 
cable system, especially when operated from a 12 V power system.
CAUTION:
Do not use the open array scanner with an SL70 or Autohelm 7" 
LCD display unit. Failure to observe this may result in 
permanent damage to the display unit.
12 V systems (4 kW scanners only)
Extensions to the supplied power cable must be kept to a minimum 
and the power should be fed directly from the output of the battery 
isolator switch via its own dedicated cable system. It is recommended 
that no additional power switch is included in this power cable. 
CAUTION:
The display unit does not include a fuse for scanner power, so an 
in-line fuse or circuit breaker MUST be included in the power 
cable. 
All power connections must be of high quality to minimize their 
resistance and to remove the risk of accidental shorts. Recommended 
154_4.book  Page 17  Wednesday, October 25, 2000  3:02 PM