Relay on battery charging system / tugboat

[lefty51]

Im doing some work for a marina. They asked me to check out the battery charging system, on a tugboat. Boat is very old, and the prints are in dutch. Relay in the charging system starts clicking rapidly, ( sometimes...but not always ) but of course never when Im there to check it. It does not look like a standard relay....probably voltage sensing, and / or current sensing, as it has some electronic devices on the board. Anyone have experience as to requirements for a typical relay for this application ?? ( The relay is also hardwired in, the cover is removeable...but thats it. Obviously I want to change to plug in style, which can be readily changed if need be.
4 wires on the relay....its 24V DC....so basically 2 for the coil, and 2 making and breaking a circuit.
I know this is kind of vague, but im pieceing information together as needed, and make a decision from there. Thx!

 

[lefty51]

Thanks for the above information !! I will be down the the marina this week sometime, and review this with the chief engineer and see where we go from there. Will keep you posted.........

 

[lefty51]

Dont know if this makes a difference or helps. On the front of the battery charger panel...is the following:
ECW ( Belgium ) 394078 ( must be the model or serial # )
Primary -> 380 volts.....2.2A
Secondary...24 volts.....40 A

 

[waross]

Not much. We have to identify the relay that is chattering.

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[lefty51]

Guys....I " think " the relay we are looking for is the one that has no designation. Its marked voltmetrische, and LADER on the top. Does this make any sense ? I have been told that since the batteries have been charged up somewhat....the chattering has disappeared. Also, the alarm has been removed.....for a loooooooonnnnnngggg time, so there is no indication that way. Going to take a look and see if I can see any more info. off the relay at all.

 

[lefty51]

Absolutley nothing more on the relay than the following.
There are 4 wires...to for the coil....on A & B. Coil is 24 V DC. + is on " A ", and - on " B ".
Wires are marked 1 & 4, which are normally open. 1 & 2 are NC, but 2 is not used.

On the side of the relay , it states

OFF --> -30
+10

ON --> -10
+30

Yes, there are 2 small pots on the board as well. A little tight to get to, but can be adjusted if need be.