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--- project:sprinklers [2024-04-17 Wed wk16 13:10] – [Sprinkler Solenoid 24VAC Woes] baumkp
+++ project:sprinklers [2024-04-17 Wed wk16 13:11] – [Sprinkler Solenoid 24VAC Woes] baumkp
@@ Line 30: / Line 30: @@
 In summary:
   - Old decrepit failing underground solenoid wiring replace with new sheathed quality multi-core wire with node boxes fitted and operation well for 4 months. The LEDs in the control nodes make system diagnostics much easier.
-  - New solenoid valve are dual rated for 50/60Hz and significantly relies upon the solenoid reactance. The reactance is directly proportional to the frequency that affects the operating solenoid current and power draw.  In 50Hz applications the current and power draw are higher and hence the solenoid has less tolerance to over rated voltage.  Hopefully the resistor will solve this problem.
+  - New solenoid valves are dual rated for 50/60Hz and significantly relies upon the solenoid reactance. The reactance is directly proportional to the frequency that affects the operating solenoid current and power draw.  In 50Hz applications the current and power draw are higher and hence the solenoid has less tolerance to over rated voltage.  Hopefully the resistor will solve this problem.
   - I suspect the new solenoid valves are actually optimised for 60Hz operation not 50Hz and this has been the root cause of the new valve solenoid problems I have been having.
   - A readily available 12 Ω, 1 W resistor at cost of less than $1.00 seems to be a simple solution to rectify the solenoid failure problem.