CORAX 3 Energy Meter: Investigating Rising Consumption Trend in New Apartment (Month/kWh)

Question

Hello. In my new apartment I noticed a strange growing trend in energy consumption readings, which I decided to investigate. Interestingly, in the meantime, subsequent residents on the forum of our estate began to report an identical problem, so something must be for a thing ... This is the...

polaklbn · Accepted Answer

There are many MV switch-disconnectors controlled remotely and yet the fitters drive and check their position. It does not matter.

I also have coraxa and I did not notice such a situation.
On the forum, it is not possible to give more advice in this case than to review the installation or to advertise the situation in the EC.

polaklbn · Answer

The Riso measurement is indicated here, whether the current is not flowing into the abyss.
The case can be reported to ZE and the counter will be sent to the lab (you will be charged for the negative result). Equipment in A +++ class can also work as D, depending on the work program. If you moved in August 2016, you could have forecasted invoices until January 2017 - hence the change.

3d0 · Answer

I do not know what the cost of such a measurement is (I will find out) but the question is whether someone with this particular model / company actually had such a problem before and there is a chance that the result will be positive? Because as I understand it is not a flaw of the assembly and the defect of the device, in this case the damaged had to be a whole series since so many people observed a similar effect.

The general question is whether the construction of the meter itself can actually affect the reading for specific devices.
btw: on the estate next to a similar complaint, the Apator meter was exchanged for smartEMU 3

As for forecasting, this could have been the case, although the seller gave information that he had counted the counters at the end of the month from the beginning. The installation is adapted to automatic readings, but for some reason the team goes on a monthly basis and writes down.

3d0 · Answer

Thanks, that's what I meant. Because an individual may be affected by a defect always but sometimes it happens that a particular company will apply other solutions and this may later affect performance and accuracy (generally speaking about each equipment).

Vein · Answer

So for information, from month to month, with the same use of the house, the increase in the cost of electricity by 50%. To make it from 100 to 150 PLN, I jumped the cost from 500 to 800 PLN ...

zbich70 · Answer

Two questions: 1. Are these estimates, i.e. calculation of energy consumption based on previous periods? 2. When writing my new flat, do you mean a new place just put into service or from the secondary market?

Vein · Answer

@ zbich70 you will let me describe my case, it is not my respect for me, only the monthly reading (this is how it is written on the invoice), the building is still in my possession, however, 4 months ago, continuous use has begun.

piotr-611 · Answer

Hello! I have exactly the same problem with the CORAX 3 counter. I even used 1000 kWh once. There were gentlemen out of control and said that the meter is ok, you just need to turn off the charger from the phones ... The peak of consumption is about January - February, and the smallest consumption June - July
(I 2018 -1000kWh IV 2018 - 300 kWh and 2019 - 800 kWh). Recently, I set myself a PAFAL 16EC3gr sub-count and compared the indications. CORAX indicates a lot more than PAFAL, almost the second. For example, Corax - 13 kWh, PAFAL - 5 kWh !!! Weird....
I wonder what was the continuation of the CORAX 3 counter history?

exsufflatio · Answer

Problem I've been having at university many times, for example: For small loads (about 10% of the meter) very large errors at nonlinear receivers.

piotr-611 · Answer

Thank you for your response. That explains a lot, especially the great differences between the indications between my sub-meter and the supplier's counter. Just what to do to not be harmed by very high bills? Currently, I do not have high-power receivers that are used frequently.

Greetings!

student11 · Answer

Hello, My parents got to pay PLN 200 max. Now PLN 2,500. WG Elektrownia consumed 5400kWh and when I was at home (computer + router + tv) they consumed 1800kWh for 6 months. They have this meter just.

zworecki · Answer

I have overstated consumption after replacing the meter. Counter indication as below.
I disconnected everything at home and connected the devices separately:
- nothing -> 0W
- traditional 375W bulb -> 368W
- LED Osram 20W bulb -> 19W
- noname 50W LED illuminator -> 96W
- 50W curling iron -> 210W
- 40W straightener -> 120W
- electronic water pump ECO 25W -> 100W

zbich70 · Answer

I recently discovered a perpetuum mobile while sitting on the toilet. Well, the wife bought a hair dryer - I look and I do not believe - on the cardboard written that the power of the hot air stream (dry watts) is 2100W , but only 1500 Watts from the network. Energy saving 25% ... Miracles, miracles are announced ....

zworecki · Answer

Turns out the meter is OK, and the overcharged power consumption is the light in the basement that someone forgot about ... for a month
Immediately improve the post above, because I went after the producer and I should not.

Yes, out of curiosity, I measured:
Curler "50W" current graph:
/// 100mV -> 1A ///

CORAX 3 Energy Meter: Investigating Rising Consumption Trend in New Apartment (Month/kWh)

During heating, the value changed, but I tried to take a drop along with the meter reading.
So the 50W according to the oscilloscope is 96W. The counter showed 87W. It is possible that I did not read at the same time.

45W straightener:

Calculated 270W. 260W counter.

The whole house in one phase with all lamps, computers, water pumps turned on:

Calculated 1.05kW. Counter: 970W

I have yet done the LED illuminator test no name but I have not saved a screenshot from the oscillation. The massacre is more heater than a lamp.

Generally, the conclusion is that the values given on the rating plates are some fake ....

Tbodzio · Answer

I also have CORAX 3 and an inflated January reading of 2021. I have a real settlement and I gave the last meter reading (earlier and now always downhill) 4800kWh - the collector came for me (apparently it goes every month), the energa office confirms by phone that what he read after me it was always less than I gave about a week before him. Well, I gave 4800 on January 3 and he read 5665kWh on January 12, 2021. 865kWh in 9 days !!!!! ???? What would I have to have connected? I read the meter on February 7, 2021 and it turned out that I have 6147.4kWh (almost 1200kWh) and the bill is over PLN 900. I feel like crying because I am aware that I am not able to consume so much electricity in a month. My average kWh consumption is 250 - super max 500 per month. So ... they advised me that I could turn off all devices from the sockets on 30 minutes and see if the meter starts. If it does not move, I do not have a chance and pay. 865kWh in 10 days !!! ??? there are no such home appliances in my opinion 1200kWh in a month when from 5 years never was> 500kWh Any ideas?

kortyleski · Answer

None. On the one hand, in each device a converter without a filter, so the current waveform is significantly different from a sine wave, on the other hand, a meter that cannot correctly measure the distorted waveform. Surprisingly, the old ones with the shield were doing very well.
The new ZE scam in white gloves has come.

Tbodzio · Answer

Today, i.e. 10/02/2021, I thought to myself - if I already pay 1000 PLN per month of electricity, for about 1300kWh, even if I pay 200 more for the replacement / expertise of the meter (because it probably works properly and these phone chargers suddenly turn to me took ...) then I will have a new one

because I assume the old one won't come back. What for? In the meantime, I will measure with an ordinary single-phase sub-meter to the socket, how much is consumed in the daily cycle (I already know that the 24kW central heating furnace and accompanying pumps are about 90 PLN per month). In 7-10 days I will have my main receipts measured:
- Bake; - fridge; telemedia in the living room (amplifier, TV, decoder, sobwoofer, which never works); then possibly an oven and an induction hob (but it's for two days because I cook and bake little) and a dishwasher + washing machine, I'm not going to measure lighting.
I still can't believe and I wonder how suddenly my demand increased by 120% (not to be confused with 20% - 100% + 120%

).
Cry and pay, that's the philosophy of ZE.

PPP · Answer

I confirm the problem for me 1300 kWh where in previous periods I had 400kwh nothing new has come. I have an increase in both tariffs

Tbodzio · Answer

I have already paid. After I measured (almost) every day for a month and everything was ok ... it left me to think that they cheated me once (probably for the second time in 10 years) and there is no point in digging with the horse. I do not like to let go but I am not interested in a looong fight (maybe years) for 600-700 zlotys and with no greater chances of winning. They will make an expert opinion, say that everything is done and goodbye after the case and I will be left with the court costs. I have no other advice, unfortunately, how to pay it to these gentlemen.

Slawek9022 · Answer

I can advise you to disconnect all receivers and check for any afternoon electricity. A vector should appear on the numerator along with the energy demand. Later check the meter reading with the invoices if it is correct or if the readings are not estimated. If this is not possible, call an electrician to check the installation and perform measurements. Installation from insulation to impedance. Electricity meters fail very rarely, I would look for errors in readings or in receivers at home.

ronwald · Answer

Here it will help to check the energy measurement with a class A power quality meter with the current calibration, eg FLUKE 435-II. Measurements of this class with a meter must be taken into account by the Energy Seller.

Slawek9022 · Answer

Analyzer for 50 thousand. Only the service will cost, the easiest way to report it to the power company will come and check the measuring system if it measures well, you will get a printout from their device, if the meter is in the measurement accuracy class, the standard is /- 2%. Examination for about PLN 150. This is the easiest way

ronwald · Answer

Without exaggerating with those 50,000 PLN, you can buy it for 23,000 PLN net. Yes, such a measurement costs money
FLUK has the valuable advantage that it has an energy loss calculator, in addition to checking the energy meter, it will show the quantitative parameters of energy losses and inform what is the cause. Calculates energy losses for the month, quarter, year, etc.
With large bills and you don't know why, it's worth doing such research.

Anonymous · Answer

Welcome,

And how did it turn out?

I live alone in a 106 m2 semi-detached house. The CORAX 3 meter charged me a huge amount of energy consumption. I have a gas cooker that heats the water and the house. I do not have photovoltaics or a heat pump. I have the usual electrical appliances needed in the house.

The electricity consumption for 2022 in my home was 1,694 kWh
Electricity consumption for 2023. - 7,695 kWh.
For the period 13.07.2023 to 25.01.2024, for which I am in dispute with PGE, the electricity consumption was 6907 kWh.
For the period 26.01.2024 to 31.08.2024, the electricity consumption was 577.7 kWh - here they replaced the meter with an optical remote reading meter.

On 25.01.2024 they replaced the meter themselves with a new one because they realised that there was something wrong (no neighbour had their meters replaced). I had no idea about such energy consumption and realised when the invoice for £8100 arrived.

Twice the meter was sent to a laboratory for an expert opinion and it was found that everything was ok with the meter. Now PGE suggests sending the meter to the manufacturer for checking. I was invoiced £350 for the first expert opinion and about £900 for the second.

I asked PGE why they counted from two meters EP and EP-? Why was the active energy consumed and the energy given up counted for the invoice?

PGE wrote back that this is how it is supposed to be, that the meter was dismantled from a customer who had photovoltaics and this in my case adds up for code 15.8.0, this makes it easier for the fitters to install the meters, for which they apologise to me.

Here we have already sent a few letters between us and yes they are claiming that I was connecting some equipment to insulate the house and heat, which is total nonsense. And so I feel that in this case I will have to split this invoice into instalments and pay eight thousand just for nothing.

Of course, the consumption of 21523 kWh is also impossible in my case.

On the laboratory tests it is detailed:
active energy consumed sum of all zones 1.8.0 - 21523 kWh
active energy consumed 1 zone 1.8.1 - 21523 kWh
active energy returned total all zones 2.8.0 - 3338 kWh
active energy input 1 zone 2.8.0 - 3338 kWh

The meter from the laboratory expertise is tested on the basis of a few kWh.
A few days ago an identical situation occurred with a neighbour. His meter is a few metres away from mine and I witnessed the meter going like crazy and everything was disconnected - 40 kWh in an hour had been accrued to him where everything was disconnected, but he had a NORAX 3 meter. They came from PGE and sent the meter for expertise. It also came to him with a high bill, but he detected it in time. He has a monthly billing and I had a six-month billing at the time and never checked the meter. All the neighbours now check their meters because they all know what has happened to me.

Matthew

ronwald · Answer

Before notifying the 'District' that your meter is not working, you should have your electricity measured by an external company that provides electrical metering services. Of course, they should have a class A meter, e.g. FLUKE 435, and have a current calibration of the measuring equipment. For your information, I saved a farmer from paying PLN 72,000 to ENERGA. The energy meter was charging 10 times energy consumption. After 6 months, ENERGA recognised the complaint and checked the energy meter at its own expense. One more remark, when replacing the meter, draw up a protocol, in which the state of the meter with the date and its serial number is written down by a commission.

Anonymous · Answer

I didn't have that option. It was only when the bill came that I found out. The electromo nter PGE came and simply replaced it without my knowledge, of course, because that is their right. PGE Distribution sent the status of the meter to PGE Obrót. PGE Obrót asked PGE Distribution to check the state of the meter again, because they saw that there was something wrong - that's what the PGE Obrót dispatcher I was with told me at their head office. The electrician came again a few days later and replaced the meter with a remote reading meter. PGE Dystrybucja claims that there is a massive project to replace the meters with remote reading and that is why they replaced them. I attach the document that the electromonitor left in the box.

=Grzegorz= · Answer

Mass replacement of counters with remote - this is true.
Using 15.8.0 registers interchangeably with 1.8.0 registers - this is also true and common practice just needs to be done well.
The use of used counters is also a practice.

In your case there is some doubt about the contractual power of 11kW with 20A protection (behind the meter probably max 16A per circuit) and according to the letter you provided on PW you were drawing for a long time (more than an hour) almost 15kW (14.63kW) non-stop with short breaks for many days.

To your detriment is the fact that this was during October/November/December.

Anonymous · Answer

Fuses ETI C20 Fuses 20A 3x S. Contracted connection power 11kW. On the protocol (red bars) it is stated that on 21.10.2023 I drew 14.43 kW of power this is at the limit of the fuses tripping. .

CORAX 3 Energy Meter: Investigating Rising Consumption Trend in New Apartment (Month/kWh)

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