Solenoid question

[Fotoman]

Just got a used windlass. I need to buy a solenoid to install it. Would this work?

http://www.allelectronics.com/make-a-store/item/SOL-80/12-VDC-POWER-SOLENOID/-/1.html

 

[Forkliftt]

It depends on the amperage draw of the used windlass and the length of your supply cables ( they could add to the amp draw). Some solenoids get their negative source from the mounting bracket, others have a + and -terminal that completes the circuit for the pull in coil. I forgot to check if this one is for "continuous duty". Recommended I would think for an application like a windlass.

 

[koliver]

You need something with a continuous duty cycle. sometimes hauling up takes quite a while, at 1 ft per second, to haul 350 ft of rode takes, well, 350 seconds, so a continuous dty cycle of 10 to 40 seconds wont cut it.

 

[FF]

Intermittent, 50% duty cycle. 10 seconds on.

Might work for some of the crapo bow thrusters with their limited duty cycle , but WRONG for a windlas.

350A is good , as the battery voltage may be dropping as you grind in the ground tackle.

 

[Fotoman]

Not sure I understand the continuous vs intermittent duty cycle. Can someone explain?

 

[Forkliftt]

A solenoid that is used for something like a starting motor is designed to pull in, and be released in say 5-15 seconds when the engine starts. In an application where the solenoid will be pulled in much longer- it must be able to withstand the additional heat I assume. "Continuous Duty". I have seen solenoids that had one set of windings to make a magnetic field to pull in the contactor and a second set of windings designed to hold in the contactor. Maybe CD is someting like this.

 

[skipperdude]

If it is larger than the original check the size of the wire. to small a wire can sure get hot.

SD