PEA Visit BS or What?

[carlyai]

I complained to PEA about one phase varying up to 237 V. This was a few weeks ago when I visited them.

Other phases are 222V and and 226V.

A guy came out today and said the normal supply from the transformer is 230V. So 237V is OK.

I said but we should get 220V, he disagreed.

When I asked why the other 2 phases were nearer 220v he said that the other 2 phases are easier to connect to on the pole so most houses are connected to the other phases. 555.

So if we had more connections on the high phase it would be about 220V odd.

I said what about 3 phase equipment as phases aren't equal or near about, he said it's not a problem.

I said what about the pumps etc working at 237v, he said no worries.

I can fix it at our place by changing some gear to a different phase and my AVRs but is PEA speak BS and why tell people BS?

 

Sounds like BS to me. 

 

 

 

 

[Will B Good]

 

 

 

EGAT and PEA (Provincial Electricity Authority)  220 V ±10% → 198 V to 242 V

 

IEC 60038 Standard

[carlyai]

2 minutes ago, Will B Good said:

Allowed Range: 207 V to 253 V

You gotta source or do you moonlight for PEA?

 

220/253 x 100% not 10%

[KhunBENQ]

14 minutes ago, carlyai said:

I said what about the pumps etc working at 237v, he said no worries.

Very true.

Most people have the opposite problem like pumps at 190.  I have bought a simple voltage checking device.

Like most it has limits at 160 and 250 Volt.

[KhunBENQ]

Just now, carlyai said:

You gotta source or do you moonlight for PEA?

207 is reality for many 😁

[KhunBENQ]

5 minutes ago, carlyai said:

You gotta source or do you moonlight for PEA?

On the rush just found this for UK:

In the UK, the declared voltage and tolerance for an electricity supply is 230 volts -6%, +10%. This gives an allowed voltage range of 216.2 volts to 253.0 volts

 

https://www.spenergynetworks.co.uk/pages/voltage_changes.aspx#:~:text=In the UK%2C the declared,216.2 volts to 253.0 volts.

[Will B Good]

7 minutes ago, carlyai said:

You gotta source or do you moonlight for PEA?

 

220/253 x 100% not 10%

Some sources list Thailand’s single-phase nominal voltage as 220 V, while others use 230 V. Both are technically correct depending on the context and utility region. 

 

You could always get off your fat lazy arse and do your own research of course.

[KhunBENQ]

European standard EN 50160 allows +/- 10%.

Hope that some of the experts come to the thread.

[Peter Crow]

And then one has to trust the multimeter he bought at Homepro. 

 

But anyone who worries because he got a reading of 237V has to book for a Gastroscopy as he is likely to have ulcers.

[carlyai]

1 hour ago, Peter Crow said:

And then one has to trust the multimeter he bought at Homepro. 

 

But anyone who worries because he got a reading of 237V has to book for a Gastroscopy as he is likely to have ulcers.

Back up your claim Peter. 🙂

[Crossy]

My understanding is that PEA is nominally 220V P-N and MEA is 230V P-N, both +-10%.

 

I wouldn't worry too much about the imbalance for your 3-phase kit although induction motors do run with a poorer Power Factor when run at higher voltage than nominal.

 

 

[carlyai]

3 minutes ago, Crossy said:

My understanding is that PEA is nominally 220V P-N and MEA is 230V P-N, both +-10%.

 

I wouldn't worry too much about the imbalance for your 3-phase kit although induction motors do run with a poorer Power Factor when run at higher voltage than nominal.

 

 

Thanks. I'm PEA.

Why is there a difference between the two regulating bodies?

 

So if they wanted to bring my high phase back to within 10% do they alter a transformer tapping or what do they do?

 

Is it too difficult?

[Peter Crow]

13 minutes ago, carlyai said:

Thanks. I'm PEA.

Why is there a difference between the two regulating bodies?

 

So if they wanted to bring my high phase back to within 10% do they alter a transformer tapping or what do they do?

 

Is it too difficult?

Balance the load.

[Crossy]

TiT I'm afraid for the voltage difference.

 

They would alter the tap setting on the Tx but that might cause other issues if, say, a currently dormant factory came back to life. It's not really a difficult task but ...