Watt meter

[Gerrie]

Hi All

I have a watt meter that is rated 0-60V/ 0-100A.

 I would like to try it, just to measure battery voltage. Have any body used these before, or anyone know how to connect it to a 48V battery bank. The instructions is not very clear and I don't know if this unit also need its own power supply to switch on.

Any info would be appreciated.

 

 

[Dex_]

one side says source, one side says load, to me that is how it looks like it should be connected. wires seem scrawny though to handle 100A @ 60V let alone 48V but I am no electrician.

 

video: 

 

 

Edited August 27, 2019 by Dex_

[Gerrie]

42 minutes ago, Dex_ said:

wires seem scrawny though to handle 100A @ 60V let alone 48V

Thanks Dex,

It only looks like 4mm2 thick wires. I don't trust 100Amp on this unit, but I think it will work just to show me battery voltage. I’ve just used source wires and no bang yet.

[Gerrie]

Just now, Gerrie said:

 I don't trust

Display is also upside down

[Dex_]

6 minutes ago, Gerrie said:

Thanks Dex,

It only looks like 4mm2 thick wires. I don't trust 100Amp on this unit, but I think it will work just to show me battery voltage. I’ve just used source wires and no bang yet.

ah great stuff  

[Dex_]

6 minutes ago, Gerrie said:

Display is also upside down

 xD - makes me wonder if the whole units internals are backwards now, that second vid he strips it, might be worth opening up and seeing if it is backwards xD

Edited August 27, 2019 by Dex_

[DeepBass9]

I had one of these on my wind generator, It was popped by a lightning spike (it was before the surge arrestor). 

[Dex_]

1 hour ago, DeepBass9 said:

I had one of these on my wind generator, It was popped by a lightning spike (it was before the surge arrestor). 

is a wind generator not AC?

[DeepBass9]

55 minutes ago, Dex_ said:

is a wind generator not AC?

After the rectifier.

[___]

15 hours ago, Dex_ said:

 xD - makes me wonder if the whole units internals are backwards now, that second vid he strips it, might be worth opening up and seeing if it is backwards xD

Yup, I think it's one of those extruded aluminium cases and the internals just slide in. It's probably inserted the wrong way round. That means the source and load indications are the wrong way round too.

[DeepBass9]

They are bidirectional AFAIK, so they measure current in both directions for charge and draw.

[Gerrie]

22 hours ago, Dex_ said:

 xD - makes me wonder if the whole units internals are backwards now, that second vid he strips it, might be worth opening up and seeing if it is backwards xD

I opened it up to see, unit was assembled the wrong way. It just slides in.

6 hours ago, plonkster said:

Yup, I think it's one of those extruded aluminium cases and the internals just slide in. It's probably inserted the wrong way round. That means the source and load indications are the wrong way round too.

Correct, source and load was turned around too. I had my battery on load side first time and it worked,  I have turned it correct now and connected  the battery to source and now it is like it is supposed to be.