Permissible norms of voltage resuscitation. Increased voltage in the electric circuit: practical
Recently I robiv repair. The first minute hit me in the head about the need for electricity supply in the apartment. More precisely, like: ideally, it was necessary to buy a stabilizer by the butt, but after a few more turns, I had a chance to step up to a more simple solution - the AVR 40 automatic machine. However, there is no oskolki to reserve, it just takes a load, as if the value was beyond the task of the boundary. Range allowable voltage I put 180-240 V between...
Repair I finished late in the fall - at the leaf fall. During the first frosts, the people began to turn on the electric heating and it was like my zdivuvannya, if the electricity began to turn on in the apartment. On the back of my mind, I thought that the planned inclusion was just too much. - however, having respected that it is light in the pіd'їzdі, and near the suіdnіkh apartments. Having returned my respect to the lichnik, I turned on the power supply: 176 volts!
Having reprogrammed the devices, I set the parameters of the lower and upper inter-values of 170 and 240 volts, apparently ...
Close to the month everything was fine, and I wake up without light. Now it has become a tradition: winter, first frost - the voltage drops. I’ll attach it right away for the indications - the measure has 165 volts! Is it ok???
Ni. Vіdpovіdno to GOST, normally admissible and marginally admissible value of voltage variation δUу on the windings of the electrical energy receivers equal to +/-5 and +/-10% of the rated voltage electric lines for GOST 721 and GOST 21128 (nominal voltage);
And now the brain is straining. How to check, what is the normal (nominal) voltage - 220 V, 10 vіdsotkіv per tsієї digit (and tse - maximum allowable allowance!!!) - 22 volts. Tobto in the measure can be no lower than 198 volts and no higher than 242!
Qi norms and regulations GOST 13109-97. "Standards for the power of electrical energy in systems of electrical power supply of a wild nature".
How do you think, how long to serve the outbuilding, insured for 220 V, connected to the line with such a ridiculous voltage? They used 110 V, which is already dribbling, so even if American technology can be put into sockets, without fear of breakdowns.
The change in voltage in the electrical measure is called the in-line actual value in the working station as the nominal value for this measure. The reason for the change in voltage at the same point of electric lines is due to the change in the voltage on the line fallow in the graphs of different voltages.
The change in the voltage is injected into the work of the adjustment. So, in technological processes, a decrease in the voltage of life leads to an increase in the trivality of these processes, and as a result, an increase in the co-operation of viability. And the increase in tension will shorten the life of possession, more the possession will start to work out of adventures, which will lead to the occurrence of accidents. If the voltage is changed in the normal way, then the technological process can be reversed.
On butts with lighting systems, you can point out the fact that with a 10% increase in voltage, the hour of operation of the heating lamps changes four times, so the lamp burns out much earlier! And with a decrease in the voltage of life by 10%, the light flux at the lamp will decrease by 40%, with which the luminescent drop light stream we become 15%. How the voltage will appear 90% of the nominal value when the fluorescent lamp, then it will freeze, and at 80% - it will not start up.
Asynchronous motors - more sensitive to the tension of life I will add. So, if the voltage on the stator winding falls by 15%, then the moment to turn, on the shaft, will decrease by a quarter, and the motor will be more serpentine for everything else, which means there is a start, - asynchronous motor call not to start. With a decrease in the pressure of life, the strum slows down, the stator windings are more heated and the term of the normal service of the engine is greatly shortened.
If the engine is still practicable at a pressure of 90% of the nominal value, then the term of the second service will change twice. If the voltage of life is exceeded by 1%, then the reactive storage pressure, which slows down the engine, increases by about 5%, and the overall efficiency of the operation of such a engine decreases.
At the average electric grid, regularly live such an advantage: 60% of the energy is consumed asynchronous electric motors, 30% - for lighting and 10% - for specific purposes, for example, 11% fall on the Moscow metro. For reasons GOST R 54149-2010 regulates the marginally permissible value of the allowable voltage on the clamps of electrical devices as ± 10% of the face value of the measure. For those who have normal breathing, ± 5% is important.
Є two paths of satisfaction tsikh vimog. The first one is to reduce the waste, the other is to regulate the pressure.
Ways to reduce costs
Optimization R - choose to re-run the conductors of the LEP according to the regulations for the minds of the minimum possible costs.
Optimization X - stoppage of late compensation reactive supports line, connected with the unsafe movement of the short circuit, if X → 0.
Compensation path Q - shutdown of KRM installations with a method of reducing the reactive storage during transmission by electric lines, for the help of non-intermediate condenser installations or for the help of working with overexcited synchronous electric motors. Compensating reactive exhaustion, okrіm vtrat decrease, reach the energy savings, shards in the gaps decrease the amount of electricity consumption.
Paths for regulating the voltage
For additional transformers at the center of life, regulate the voltage Ucp. Special transformers automatic attachments podstroyuvannya of the coefficient of transformation vіdpovіdno up to the flow value of vanity. Regulation is possible without intermediary under the interests. 10% of power transformers are equipped with such attachments. The range of regulation should be ±16%, with which the range of regulation should be 1.78%.
So self-regulation of the voltage can be realized by transformers of intermediate substations Utp, windings of a different transformation coefficient, which are equipped with soldering points on them. The adjustment range should be ± 5%, with the adjustment margin 2.5%. The remembrance here is carried out without awakening - from the vіd'єdnannyam vіd merezhi.
For a steady increase in voltage at the regulated by the state standard (GOST R 54149-2010) the boundaries of the energy supply organization.
In fact, R and X can be changed at the stage of designing the electric line, and further operational change of these parameters is impossible. Q and Utp can be adjusted for the hour of seasonal changes in the cost of the fence, and also by the modes of robotic compensation settings reactive pressure Necessarily centralized, suitable for the in-line mode of work and measures as a whole, so that it is the responsibility of the energy-supply organization to work.
If the regulation of the voltage Ucp is directly from the center of life, then it is the most convenient way for the energy supply organization, which allows you to quickly adjust the voltage exactly according to the schedule of the supply of electricity.
At the contract of electric supply, the inter-variation of the voltage at the place of delivery of the respite is indicated; when rozrahunku tsikh between it is necessary to spiral on the fall of the voltage between the given point and the electric receiver. As it was supposed to be higher, GOST R 54149-2010 regulates the allowable value of the breath in the mode, standing up, on the grips of the electric pickup.
Axis of what you know on the Internet:
Who should take care of the power supply to improve the power of the apartment?
There was a problem - the voltage was increased at the entrance to the apartment.
Already not the first block of life burns through the night increase to 245 volts. Day 230-238. (I measure with Mastech digital tester)
Viklikav Zhekivskogo electrician. Vіn came, hovering, and seeing that the type is 235 volts a day, and 245 volts at night - "not normal." On the susіdsky phase 225 showed.
Axis of what you know on the Internet:
GOST 13109-97 "Standards for the quality of electrical energy in systems of electrical supply for a hot purpose"
From the most obvious material, it is clear that electricity is a product that you can sell for a penny, and products, as you can see, may not be the same. GOST 13109-97 technical support to the electricity that is supplied to you. The text of GOST non-fakhivtsev most realized the offensive:
For merezhi 220 In normal vіdhilennya naprugi become vіd 209 to 231 V; marginally admissible vіdhilennya vіd 198 to 242 V
hour to measure the voltage using the method of taking the average result of 60 seconds
in order to establish the fact of non-single or constant resuscitation of the voltage, the measurements should be carried out with an interval of 24 years
Where else can you turn around, so that they correct the situation?
Aje is clearly here at the booth "zero" vidgoraє.
at KK. writing. at two accomplices. pіd raspis. іz zaznachennyam, scho at razі chogo vіmagatіme vіdshkoduvannya zbіkіv іz them.
krіm KK for vnutrishnyobudinkovі merezhi, nіhto not vіdpovіdaє.
Already not the first block of life burns through the night increase to 245 volts.
19.4.2013, 16:04
And who is repairing them for you? In our house, once at night, the voltage moved so much that 80% of the life blocks burned out. by-button technology. CC paid for all repairs.
OK to grant sums for the collective application
I repair, obviously, myself. Ale yakscho mlynets refrigerator grunt...
19.4.2013, 16:18
Upsa chart for the moment
19.4.2013, 22:56
Upsa chart for the moment
Tse did not get to the point. And from where the GTC has been installed with the PKE log (indicative of the quality of electricity) - you can try it. All the same, the document is from a certified attachment. Well, it’s true, maybe there you have a mess in your inner-buddy branch, so it’s skewed.
20.4.2013, 18:48
Putting the voltage relay hour QC did not put things in order
electricians tezh yogo chanted. For 50% of the time the apartment will be without a fence.
For the time being, in the quality of the temporal world, stand the UPS for stabilization, live those who are dearer and lower.
772222 phone ODS electric power. call, maybe the voltage is high. the stench freezes day and night.
I'll try during business days
as installed by the GTC with the PKE log (indicative of the quality of electricity) - you can try
de OK de yoga take?
21.4.2013, 13:41
21.4.2013, 15:20
Well, the same Mercury 230 ART regularly supports this magazine. Pobutovі (single-phase) lichniks of such a vzagalі do not support, as far as I know. That's why I said about the OPU.
m-230 don’t be like, but the one that makes the letter Q.
I'll try during business days
phone now.
22.4.2013, 17:36
772222 immediately shoved to KK, so we write a kid
22.4.2013, 17:52
I have after that, as the voltage cut off, burning oops powercom. Having gone to ETM, having bought an UZM 51M, it became possible to turn on the electrics during haircuts ..., there the regulation of the lower and upper boundaries ... was set to 200 and 245 volts.
The shield has three phases, one is 235 volts, the other is 242 volts, and the third is 252 volts and all the stinks hit either down or uphill, the most stable de 235 volts ... there is no strebkiv, it’s suddenly reduced to 200 volts. zrobyv cherries for myself, Keruyucha company to fool the people, it's time to stop the aluminum on the middle along all the risers... but it's already showing up for a long time... UK.
I buy a voltage stabilizer for 10 KVA. the best option and not so expensive like oops, but oops cost and protect equipment))))
23.4.2013, 15:52
For voltage, at the time of year 2001, the standard voltage is 230 volts with old tolerances for the guest.
є sending a document?
What can I suggest, it’s unlikely that our little ones could switch to 230 V. There’s a lot of old technology.
the most intelligent
23.4.2013, 17:11
Your booth has zero =) that’s why it’s a good idea that all the apartments in the sky are connected to 380 volts
the most intelligent
23.4.2013, 17:19
At the apartment, the light may light up brightly if something in the other apartment turns on something in the measure at the next phase, and even then you will not notice the light will be darker
23.4.2013, 17:33
Qi symptoms. About the floating zero, I let the first post.
We wonder that KK will be zim robiti (or not diyati).
the most intelligent
23.4.2013, 17:41
You can fill in a little bit yourself under the windows, run through the earth with a zero at the rosette, or better in the shield, like the wines of the home, everything will be fine, though, if you ground it in the rosettes, everything will be starving sim zero raptom, the faults will be overloaded, but this is an option =)
zero de something to bullshit or ignoring grounding or oxidizing or sawing or sawing something else, and so it’s extremely technical that refrigerators can be covered with heat, etc.
23.4.2013, 21:07
About changing the voltage in the system ... according to GOST 29322-92 http://www.aesystem.ru/gost/Index/10/10167.htm, the third page below the table read: Rated voltage above the main voltage limit 220380 and 240415 In due course, they are reduced to the recommended value of 230400 V. Until 2003. in the capacity of the first stage of electro-postal organization in the krai, it is possible to measure 220380 V, it is necessary to bring the voltage to the value of 2 400 V + 10% -6% .......
To come out the upper boundary of 253 volts and the lower boundary of 216 volts .... until 2003, and after the description of the boundary tolerance will be changed to + 10% and -10%. The upper value of 253 volts is so lost, and the lower value is 207 volts. Zgіdno with a distant text "Let's look at the food about the lowering of the borders later"
In the yard 2013 r_k ...... I'm guessing who else knows the new guest how the power engineers are treated.
Until 2003 as the first stage of electro-postal organization in the ukrainian countries, which can measure 220\380 V, it is necessary to bring the voltage to the value of 230\400 V + 10% -6% ....... so it’s lower, about changing the tolerance of the breather ... ...
1. So, will all 220-volt pobutov equipment be undermined by the forces of RAV EEC?
2. 400/230: Here you can’t get enough voltage on high-voltage lines. I doubt that all our TPs were replaced with new ones, why did they change the second one? .
3. GOST 13109-97 - more will be lower GOST 29322-92
and before the speech of wines, like before, apply to the old GOST 21128-83 de standard rating 220 V
