Monday, September 15, 2014

Engineering plans for Autumn

This Autumn, I intend to redesign the shipboard electrical AC and DC systems:
1. Improve the DC power Sources:

  • New battery Charger
    • Xantrex TrueCharge 2 40A
    • Remote operation panel
    • Battery temperature monitoring
    • Wires #8 or better
    • if I use #14 wires, 14 feet long, their R is 38 mOhm, and the power loss is 60 watts!!!
  • New alternator
    • Electromaax 120
    • Serpentine belt kit
    • Alternator and battery temperature monitor
    • External voltage regulator Balmar 614
    • New wires #2 or better
    • Automatic Crossconnect Relay (ACR) BlueSea 

2. Improve the wires:

  • Connection between Battery and starter will be all #1 or better; probably should be #1/0
  • Includes battery switch and ACR connections
  • Automatic inverter transfer relay for the AC power outlets.

3. Improve circuit protection:

  • Terminal fuses for batteries
  • New breaker panel
  • New wire barrier strips
4. Improve system Measurement

  • Battery monitor
  • Digital multimeters on the breaker panel for AC and DC
  • Note that Blue Sea has a Vessel Systems Monitor, the VSM 422. It's not really as good as I'd like; it only monitors state of charge of one battery; it only handles 2 tanks; and it has a simple bilge sensor.  The Command Connect system seems another approach; but it requires a subscription.


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