99-145912-A 5-1
Chapter 5
Power and startup 5
This chapter has the following sections:
• Power source
• Power cables
• Power up
5.1 Power source
The ACU is powered with DC power. There are different options for the
power supply:
• The 24 VDC ship supply provides power for the ACU.
• An AC line provides power through an AC/DC power supply. The SAILOR
6080 AC/DC Power Supply is recommended.
In order to protect against short circuit in the power cable/connector, the
ship’s DC outlet must be protected by a 30 A fuse or circuit breaker.
The GMU is powered with AC power.
5.2 Power cables
5.2.1 Power cable selection (ACU)
The following sections provide information about the source impedance of
the DC power installation in the ship, how to measure it and power cable
recommendations.
Source impedance
The maximum length of the power cable depends on the type of cable used
and the source impedance of the DC power installation in the ship. The
maximum allowed source impedance depends on the usage of the power
range of the terminal DC input (Start up voltage: 22 VDC guaranteed,
operating range: 20 – 32 VDC; 23 A – 14 A).
See also Power cable recommendations on page 5-2.
Be aware of high start-up peak current: 35 A at 24 VDC, 5 ms.
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