RV and vandwellers wiki

User Tools

Site Tools

Trace:
electrical:12v:alternator

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
Next revision Both sides next revision
electrical:12v:alternator [2022/07/16 11:47]
frater_secessus [sizing an isolator] 		electrical:12v:alternator [2022/07/16 11:59]
frater_secessus [sizing an isolator]
Line 218: Line 218:
 ===== sizing an isolator ===== ===== sizing an isolator =====
  
-If an isolator is **oversized** it will cost more for no benefit and will self-consume somewhat more energy to hold the combining circuit closed.((an electromagnet holds the parts of the active circuit together.  When power to the inolator input is cut the electromagnet can no longer hold the circuit closed.  The circuit is open and the batteries are isolated from each other.)) \\+If an isolator is **oversized** it will cost more for no benefit, will self-consume somewhat more energy to hold the combining circuit closed,((an electromagnet holds the parts of the active circuit together, When power to the inolator input is cut the electromagnet can no longer hold the circuit closed.  The circuit is open and the batteries are isolated from each other.)) and may take more physical space.   \\
 If an isolator is **undersized** (less common) it will not be able to carry enough current, resulting in overheating and/or [[electrical:12v:alternator#sudden_disconnection|sudden shutdown]]. If an isolator is **undersized** (less common) it will not be able to carry enough current, resulting in overheating and/or [[electrical:12v:alternator#sudden_disconnection|sudden shutdown]].
  
Line 258: Line 258:
  
 **Sudden disconnection of a large load((including a charging battery)) when the alternator is running** can damage the alternator and any operating chassis electronics.  Sudden disconnection can occur when: **Sudden disconnection of a large load((including a charging battery)) when the alternator is running** can damage the alternator and any operating chassis electronics.  Sudden disconnection can occur when:
-  * an isolator shuts off due to current beyond it's rating+  * an isolator shuts off for whatever reason
   * a BMS shuts off lithium charging.  This can include overvoltage, overcurrent, temperature extremes, etc.   * a BMS shuts off lithium charging.  This can include overvoltage, overcurrent, temperature extremes, etc.
  
-The existence of the starter battery should attenuate the problem but keep the issue in mind. +The existence of the vehicle's starter battery in the circuit should attenuate or eliminate the problem but keep the issue in mind. 
  
  
electrical/12v/alternator.txt ยท Last modified: 2024/05/09 14:00 by frater_secessus

Page Tools

Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial-Share Alike 4.0 International

affilliate disclosure

CC Attribution-Noncommercial-Share Alike 4.0 International Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki