Timeline for Pre-charge resistor and contactor power dissipation calculation
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
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| Jan 14, 2022 at 2:11 | comment | added | user80875 | You appear to have expanded the question by revising it. That is generally not a proper thing to do, but since it may help with the original question, I won't complain very strongly. Using two contactors avoids the problem that I pointed out with the battery draining through the charging resistor. I assume that the 3rd contactor is redundant, operating simultaneously with the 2nd, but is, in effect, in series with the 2nd contactor reducing the chance of excessive arcing when opening under load. | |
| Jan 13, 2022 at 14:44 | comment | added | user80875 | The key switch must control the contactor, but it must also power the low-power circuits of the controller. There must be an internal connection between B- and GND. The low-power circuits must be powered from PWR while the motor power comes from B+. Both the low power and motor power circuits have a common connection that is the connection between B- and GND. | |
| Jan 13, 2022 at 5:33 | comment | added | Burak Bozdoğan | Thanks for your kind comment. I agree with your idea. One thing is not clear for me. In the circuit there is key switch which connects to contactor. Is this key switch has controlled the contactor or not? | |
| Jan 12, 2022 at 14:09 | history | answered | user80875 | CC BY-SA 4.0 |