pwede po ba single AVR for 4 unit 1hp Aircon

[djhate]

Ano po ba maganda set up ng AVR sa 4 unit na 1hp aircon? sa ngayon 1.5kva AVR ang nakakabit sa bawat aircon. low voltage po kc ang kuryente dito sa amin
 minsan 150vac nalang pag gabi. kaya umiilaw na ang low voltage indicator ng AVR ko.
patulong naman po.

[ahlburuto]

Sobra namang baba ng voltage nyo. Di kaya me problema kayo dyan sa sizing ng cable? Like dun sa Service entrance nyo? Baka mashadong maliit yung cable nyo?

Tiaka yung bang sa kabitbahay nyo eh ganyan din ang problema? low voltage din?

br

[Roland]

kung ganyan ka baba ang kuryente nyo dapat inireklamo  nyo na yan sa electric company sa lugar nyo para mapalitan ang trnasformer sa linya nyo. Di yata blema sa sizing ng cable ng bahay kase kahit maliit ung cable nila di naman yata aabot ang voltage drop sa ganyan ka baba. iinit lang siguro ang wire nyo kung maliit nga sizing.
Kung gusto mo isang avr for 4 unit ng ac nyo bumili ka ng 10 kva na avr,tingnan mo specs ng AVR na bibilhin mo na kaya nyang magregulate ng boltahe from atleast 150 volts.
cguro di na umiilaw mga flourescent lamp sa area nyo twing gabi kase 150 volts nalang kamo eh.

[djhate]

may sarili na po kami transformer 75kva, pero 3kms ang tinakbo ng #2 service dropwire. nung una wala pa kami trnsformer sabi yun daw kelangan para gumanda power, pero wala ring nagyari. ewan ko ba sa nag design ng electrical plan nito. 100amp pa pinakabit na main breaker eh yung sa genset ko nga na 30 amp di halos di magtrip kahit full load na

[miGs]

Single-line to ground ba ang linya niyo? Baka may problema kasi kayo sa grounding kaya poor ang quality ng power.

The breaker will NOT trip kahit full-load na ang genset mo simply because it was designed for such purpose. breakers are basically for short-circuit protection.

For your case, the 1 AVR to 1 ACU is recommended, just make sure that the AVR is designed for such voltage variation.

Also, you can request for investigation/improvement in your power quality. It is your right as consumer and the quality of power should be as per the requirements of the Phil. Dist. Code.

[robbietan]

Single-line to ground ba ang linya niyo? Baka may problema kasi kayo sa grounding kaya poor ang quality ng power.

this is correct, have a licensed practitioner look into this IF you do have a line to neutral setting

The breaker will NOT trip kahit full-load na ang genset mo simply because it was designed for such purpose. breakers are basically for short-circuit protection.

For your case, the 1 AVR to 1 ACU is recommended, just make sure that the AVR is designed for such voltage variation.

just make sure the AVR can handle the inrush current of your motor-compressor.

Also, you can request for investigation/improvement in your power quality. It is your right as consumer and the quality of power should be as per the requirements of the Phil. Dist. Code.

Article 4 of the Magna Carta for Residential Consumers gives you the basic right to "quality....supply of electric power". document your situation by having a true RMS tester read and have its picture taken. If you have a 220volt contract, the lowest voltage you should read is (minus 10% of 220) 198V.

[djhate]

nagreklamo na po ako dati. di na raw nila sagot yun kasi private line na raw. malakas naman daw ang power sa main line nila.
ito raw solution ko.
change 3km service dropwire to high tension wire.
30pcs new post
lahat po yan on my own expense.

[ahlburuto]

Mashadong malayo yung tinakbuhan ng cable nyo? 3km? tapos 220vac ang voltage. Kaya ganyan ang voltage nyo eh nagkaroon ng voltage drop sa cable. Lalo na pag peak hour yung maraming gumagamit. Kahit maglagay ka ng AVR dyan eh di rin magiging effective due to voltage drop. Ang isang way dyan eh lakihan nyo ang service cable nyo or yun nga yung sabi ng electric provider nyo na gawing high tension cable yun. Ang mangyari dun eh ilapit sa inyo ang transsformer para mawala ang voltage drop. Malaking investment parehas.

Anu bang scheme ng provider nyo dyan? Line to line ba or Line to ground?

Eto kung plano nyong lakihan ang service cable eh pwede nyo pa rin di galawin yung existing service cable nyo. Kung number 2 yun eh pagsamahin nyo sa isang line para madoble tapos yung isang line na lang ang bilin nyo. The bigger the better.

Try mo din maglagay ng capacitor sa bahay nyo. Para ma improve ang power nyo.....

br

[djhate]

anong klaseng capacitor po yun sir? line to ground po ang line namin d2. isang sugestion ng engr ay 2 transformer. from high tension step down to 400v ang dadaloy sa service wire. then another transformer sa dulo ng service wire step down to 220. yun nga lang special type tranformer daw kelangan dun at mas magastos.

[ahlburuto]

Ah line to ground. Try nyo munang kumuha or gumawa ng isnag effeective ground sa bahay nyo. Kung makakabili ka ng Grounding rod eh bili ka, Tapos ibaon mo na lang sa lupa. yung medyo basang lupa lagi. Then I-tie in mo sya sa ground supply ng bahay mo. Magkaroon ng improvement yan. Lakihan mo na lang ang size ng grounding wire. Yung haba ng grounding rod eh nasa 3meters yun. Mas maganda marami kang ibaon para more effective.....

Mas magastos din yung naiisip ng engr n yun. Try mo munang gumuwa nung effective ground. See the difference.

BR

[djhate]

sige sir try ko muna yung ground. salamat po sa mga advice nyo

[ahlburuto]

Anyway san ba location nyo?

[djhate]

d2 po sir sa Palawan, matanong ko lang po sir, yung supply po ba ng generator line to line or line to ground. mindong china po gamit ko dynamo 10 & 20kva

[ahlburuto]

Line to line po. Wala naman pong pinag kaiba yung dalawa... As long as same pa rin ang voltage... ganun pa rin yan....

br

[robbietan]

nagreklamo na po ako dati. di na raw nila sagot yun kasi private line na raw. malakas naman daw ang power sa main line nila.
ito raw solution ko.
change 3km service dropwire to high tension wire.
30pcs new post
lahat po yan on my own expense.

its in Article 14 of the Magna Carta that provides rights to extension lines and facilities. using this article, you could recover the costs involved in providing you with electric power

[kimoi]

can asomeone help me to find the sizing of wires or cable for acu? for example 1 hp... what will be the size of wires. thanks.

[Roland]

kala ko ung size ng cable sa loob ng bahay ang maliit hehehehehe ung galing pala sa transformer. magdadrop nga talaga. kung chineck na ng enginner yan cguradong aware sya sa grounding.  yung layo talaga ng source at size ng wire ang number one reason.

[bravokilo]

Last year pa pala itong topic.

1.do not use a single AVR because the aircompressor sucks more power at starting and it goes on and off due to the thermostat. Each aircon introduces it own fluctuation. Keep the one AVR to one aircon set up.

2. The best ground is the deep well pipes.

3. Using 100 A circuit breaker does not help in pulling in more current. If on average you draw 15 a
    amps, 30 A fuse or CB is enough. The concept of using fuse or CB is for them to break first b4 your
    lines even heat up. So make sure is line is big enough otherwise it might glow ahead of the fuse breaking.

4. I guess single line means that the line is earth. Not to be confused with the neutral ground line which we   do not use in the Phillippines although some private provider might have it. In Metro Manila, the neutral line is grounded to earth in the Meralco line. You will observe that when you use a neon tester(mayroon yan sa screwdriver), one line is strong to ground that the other(not really neutral in that sense). You are to touch the tip of the screwdriver with our thumb. lalakas if you touch your foot to the tiles.

5.AVRs are slow in reaction, so as long as the movement in voltage is slow, you are ok. but do not allow someone to weld using your line with AVRs on. The jump in V is too fast for the AVR to catch up when he releases the weld and the V can overshoot.

6. Use appliances with AUTOVOLTS. Kung di hassle sa yo, use car battery lighting system. may maga 12 V ballasts for flourescent lamps used in buses. You will not suffer flickers which can ruin your eyesight. To charge the batteries, use chargers with AUTOVOLTS like the ones to charge videocams which has a range from 100 to 240 Volts.TGeh PS for computers has wide input V range. CAn be converted to chargers but with V adjustment cuz it only supplies 12V or series the 3.3V to get 15.3V to charge batteries.

7. your 1 HP aircon is 640 watts but double that starting to be safe. So, that wis 1200 watts more of less. divide by 220 V, that is about 4.5 amps.Three (3) aircons pull a max of 13 to 14 amps. Do not start them all at once. Isa isa para hinde sumabay ang hila.

8.By the way, use Power On Delays on your aircons. The freon must liquify b4 re starting in case of outages.  WE MAKE THESE P.O.D. FOR REFS AND AIRCONS. We have original Motorola relays for big compressors like for 2 HP aircons and above.  P500 for refs and P1500 for aircons.



BK 0922 281 0680/ rcdevices@yahoo.com.ph

[roel.edeleon]

@djhate

try mo gumamit muna ng AVS (auto voltage stabilizer), servo control type, this will handle the power fluctuations up to 150VAC~250VAC. Ang output ay 220V +/- 2%.

mabagal ang response nito, mga less than 0.1sec normally safest is x3 of the power rating for power surges.

ung POD, power-on-delay, would be the next step. o kaya UPS para mas stable. ito kse ung gamit ko s mga designs ko.

please PM me for details.