RTFM questions?

by noelis-it on

Hi,

I have a some short questions I would like to ask to get the full picture.
My IT knowledge is not a problem...I'm affraid of the non-IT tasks/choices.
Hope this forum can help me with it.

My intention is to measure:

o power consumption
o solar production 8500WP (3 phases?)
o water consumption
o gas consumption

1) So If I'm right I need the B model because I want to measure 4 different channels?
2) Where can I find the info on the type and amount of clamps I need to buy for the power measuring?
3) My meters are about 4 meter away from the fuse box. Is this not too long for the water/gas cabling?

BR,
Christian

‹ Going from 1 to 3 phases Flukso site down again ›
Fluc's picture
Fluc |

Hi Christian,

1) Yes or no...
Is the power consumption also on 3 phases like your solar ?
If no, a model B is ok, with a current clamp or a single phase kWh meter with So output (for pulses).
If yes, then you will need two Flukso's, one A and one B (or Two B) if you use current clamps ,
or one Flukso type B with a 3 phase kWh meter with So output (for pulses) for consumption measurement.

2) How big is the main fuse to the company kWh meter ?

3) The wires for monitor water and gas meters can easily being made longer.

Do you have a 3 phase Din-rail KWh meter for solar with So output ?

Fluc's picture
Fluc |

For the water and gasmeter you can use the reed contact switches from the Flukso site.
But it would be good to test the magnet pulses (one every 0,01 m3) in the gasmeter first.

I don't know if there is a So pulse output on the din-kWh meter for solar ?
Are there 2 free connections on it where you can take picture from ?
Can you also take a picture of the whole fusebox ?

noelis-it's picture
noelis-it |

Hi Fluc,

thanks again.
I'll take the risk on the gas.
For the power I have added 4 extra picz on above link.
I have total of 4 fuseboxes... but the 2 left are dedicated knx domotica.

In the bottom from the left box there is a 63A 30mA and a 40A 300mA.

br,
Christian

noelis-it's picture
noelis-it |

update... the 2 right are dedicated knx

gebhardm's picture
gebhardm |
  • E-Meter (Consumption - not shown in the pictures): If pulse port available, use this; if you want to measure three phases separately, use clamps...
  • E-Meter (Solar?): According to http://www.productselection.net/PDF/UK/em23dinds.pdf the shown EM23-DIN has only an optional pulse port; so check if this is available... (attention, may be under seal; terminals 41/42)
  • Gas: G4 RF1 seems to have a magnet on the middle red digit (0,1m^3); cavity above would take reed switch.
  • Water: the jacket/bulge to the front (has it a cap?) may be suitable for a reed switch.

So, if you measure consumption three-phases-at-once with a pulse meter, you would need only one v2b as then you in total have four pulse inputs.
If your want to measure consumption on each phase via clamps, you definitely need a second FLM...
Consult an electrician if you are not absolutely sure what you are doing...

noelis-it's picture
noelis-it |

Good!

So let's exclude the solar from the discussion.
I'll keep on checking the log from the invertor.

So I'll order a v2b with 3 clamps and one probe for gas and one for water.
Do I need to order the 100Amp clamps because I have seen the 63A 30mA coming in?

br,
Christian Smet

gebhardm's picture
gebhardm |

63A is the main fuse that is the same in any (German) house connector; this is the "absolute safety switch-off"... (the 30mA is current flow against ground to blow the fuse - "FI-Schalter" to not grill yourself)
I live nicely with three 50A clamps (this is 50A * 230V = 11.5kW continuous power flow); I bet your consumers will not take more than 11.5kW at once on a single phase, will they? So you may live with the 50A variants...

noelis-it's picture
noelis-it |

Thanks... now I'm safe to order :-)

gebhardm's picture
gebhardm |

Make yourself already a favorite on www.elektro-camp.de - next event expected in November in Berlin... This is where the enthusiasts meet.

icarus75's picture
icarus75 |

Make sure you've got the proper fuse box wiring to separate consumption and PV production as detailed in this and this forum post.

noelis-it's picture
noelis-it |

Oooh no.... Now I'm getting desperate

icarus75's picture
icarus75 |

Just make sure to split PV and consumption right after the main breaker switch. That's all.

Fluc's picture
Fluc |

Christian, in your installation you must split PV and consumption right behind the main differential 40A/300mA (3 phase + N) that is sealed at the top (grid side), at the bottom right in the left fusebox.
Any good electrician will do this job. If you live in the B 9000 region, give me a message. I will look at it more closely.

noelis-it's picture
noelis-it |

Hi,

thanks.
I have talked to a flukso owner at work.
He was actually pointing the same place to measure.
I'm at B9140... thanks for the suggestion

noelis-it's picture
noelis-it |

Hi,

the electricity works. The only issues is that I have 4 chains. One seperate for the waterdevices and 3 chains for normal use.
With the PV coming in on 3 phases... it's logicaly impossible with 3 clamps. I suppose 4 clamps is not possibe? Another option is to connect 2 chains with eachother... not sure.

br,
Christian

Fluc's picture
Fluc |

For PV the best is to use a 3 phase din-rail kWh meter with SO output, not 3 current clamps. Keep the current clamps for normal use chains (stroomkring) or use another 3 phase din-rail kWh meter with SO output if you want to measure gas and water, all on one Flukso.

noelis-it's picture
noelis-it |

Hi Fluc,

I exluded the PV from the setup. I have weblogging built in... It was more important to see the consumation. It all works like a charm

Fluc's picture
Fluc |

Ok Christian, I'm glad for you :-)