Discussion of Outdoor Warning Systems
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Just a magnetic device that, when actuated using a very low amount of amperage delivered by a small push button/switch, closes the contacts between the siren motor and the incoming power.MysteryMachine wrote:ok what is a "motor starter" ?
So basically, a "Motor Starter" in this context is a fancy name for a relay or contactor.Rick K wrote:Just a magnetic device that, when actuated using a very low amount of amperage delivered by a small push button/switch, closes the contacts between the siren motor and the incoming power.MysteryMachine wrote:ok what is a "motor starter" ?
You have three motor starters in your RCM1 panel; one for the copper, one for the blower, and one for the rotator.
-Rick
So it's them green things in there?Rick K wrote:Just a magnetic device that, when actuated using a very low amount of amperage delivered by a small push button/switch, closes the contacts between the siren motor and the incoming power.MysteryMachine wrote:ok what is a "motor starter" ?
You have three motor starters in your RCM1 panel; one for the copper, one for the blower, and one for the rotator.
-Rick
Yep! Most likely! Your main components of that panel are the three motor starters and the Agastat timer.MysteryMachine wrote:
So it's them green things in there?
MysteryMachine wrote:Easy now I have to have something to occupy my time LOLt-bolt82 wrote:Wow - what a beautiful find! Congrats! It's so awesome that you found something other than sex offenders on craigslist!
)more or less, though it's a purpose-built relay. they're generally specified for the motor HP and also frequently have built-in thermal protection.weasel2htm wrote: So basically, a "Motor Starter" in this context is a fancy name for a relay or contactor.
Thank you for adding that, Jim! I didn't think to mention those features!Jim Z wrote:more or less, though it's a purpose-built relay. they're generally specified for the motor HP and also frequently have built-in thermal protection.weasel2htm wrote: So basically, a "Motor Starter" in this context is a fancy name for a relay or contactor.
Motors need some extra current to start up to overcome the static friction (I think thats the right type of friction.) Kind of like a jump start. Here is a pic of a motor starter from our old water pump, with a large capacitor for the current and a relay to switch off the cap after the motor has started. ACA's sirens (from what I have seen) use a similar setup except they also have caps that kick in when the motor is running. That small round thing is a thermal overload switch. Oh, the starter is from a 1HP 230-volt single phase Franklin Electric motor.MysteryMachine wrote:ok what is a "motor starter" ?
That's a capacitor-type motor starter...he was asking about a magnetic relay-type starter that's commonly found in siren control panels.Kasm279 wrote:Motors need some extra current to start up to overcome the static friction (I think thats the right type of friction.) Kind of like a jump start. Here is a pic of a motor starter from our old water pump, with a large capacitor for the current and a relay to switch off the cap after the motor has started. ACA's sirens (from what I have seen) use a similar setup except they also have caps that kick in when the motor is running. That small round thing is a thermal overload switch. Oh, the starter is from a 1HP 230-volt single phase Franklin Electric motor.MysteryMachine wrote:ok what is a "motor starter" ?