Fitting dol contactor for 415 v3 phase fans

[seadog60]

I have to fit dol contactor for 415v 3phase fans where the contactor must switch at 110volt how is this done please.

 

[Dayo]

why must it switch at 110 volt?

 

[johnboy6083]

you need a contactor with a 110v coil

try this Contactors 110V Coil Control Voltage

 

[johnboy6083]

why must it switch at 110 volt?

on the systems im working on at the mo, all controls in the panel are 110v, and all plc controls are 24v

 

[seadog60]

Jonnyboy how does the 415v reduce to 110v with just fitting a coil.Thanks

 

[johnboy6083]

when you said that it needs to swich at 110v, i thought you meant that that was your coil voltage. can you clarify what type of work your doing, and what control gear already exists?

john

 

[Dayo]

seadog, why is it switching at 110 volt?

 

[seadog60]

I am fitting 2 new extraction 3 phase fans and on the specification the dol contactors must switch at 110v as i have not fit anything yet what would be the best way to do it

 

[Dayo]

where is the job then industrial? who did the spec?

 

[seadog60]

Yes it's industrial no idea who did the spec but it states that it is a regulation it must be 110v

 

[Dayo]

have you got a layout of dol starter emergency stops etc, or is the start / stop at one point

 

[Dayo]

the 110 volt is probably for safety if remote stop buttons or remote emergency stop buttons are required

 

[malcolmsanford]

There must be some sort of TX in the circuitry, but as jonny said a few posts ago are you sure it's not 110v control voltage.

 

[seadog60]

Thanks guys i shall have to have a look again at the spec as it could be that malcolm but i seemed certain it said it had to be 110v on the stop start for safety

 

[Dayo]

only if its remote from the start stop unit otherwise i would just use 415 volt coil, as there is no need for 110 volt