Re: Generators
What brand of 3.0 -3.5 kW generator is good on the price range of 12-15T?
I ended up buying a Firmann gasoline gen-set, 3200 watts.battery start, auto-transfer switch connection Php 16.5T
Maintenance: monthly test run, quarterly change gasoline, wipe dust. semi-annually battery charging
Load test: 1/2 hp. deep well pump, 2 door refrigerator, lighting
Time own: 1-1/2 yrs.
Back up power: 500 watts inverter, our car-battery (3 SM)
Re: Generators
In choosing the generator mga sir is you have to consider the total loading of the house like how many bulbs and the appliances to be use, but you have to consider the stable power the gensets it requires in my humble experienced 60 to 80 percent of the total gensets power can be used continuously say 3000 watts the usable power it can supply efficiently is say we used the 60 percent its only 1800 watts enough for a 1 hp a/c ,2 stand fans,and 8 pcs cfl lamps continuosly however in using the gensets safety is a must specially if the house was design w/o the provisions of two way switch ,meaning meralco and gensets switching SPDT tawag dito,but if for emergency only can just install plug type supply type and used extensions for safety puposes,generators have two types 2 strokes and 4 strokes ,2 strokes like the ones available in raon wih 900 watts as advertised needs 2toil to operate and the 4 strokes is direct operation,and the easy to operate.And sometimes nga po pla indicated din yung specs sa name plate ng ibang manufacturer.if budget is not a problem po buy diesel type po its cheap to operate and high on maintenance nga lang.Hope this help po and sorry po admin napahaba ata.
Re: Generators
this is now very timely to talk about. i've been on the lookout for pricing of gensets and was suprised to see a bump in prices after the glenda typhoon. a typical 3kW gas genset was like about 13-14k, now it's about 15-18k. i'm unfamiliar with the brand names of these gensets and if they really are durable in the long run though. as long as hindi i-o-overload o a-abuse yung capacity ng genset, i guess it'll last (plus the usual maintenance routine).
Re: Generators
This is a good topic. And very timely given the present power situation in our country. My work requires me to continually monitor power reserve to make sure our pumps run 24x7 and I can tell you the reserve fluctuates quite frequently to very thin.
Some questions on the many points mentioned in this thread:
1. If I were to buy a 10kVa, 15kVA, or 20kVa genset what would be the good, reliable brands/models out there?
2. Any idea on prices?
3. Would an AVR effectively produce the correct sine wave from a genset?
4. To those that propose the battery+inverter solution, wouldn't you need deep cycle batteries as ordinary car batteries may get damaged if drained too low?
5. When I constructed my house, I had reserved a place in a safe area for a genset with output wires running up to my main circuit breaker. The electrician then ingeniously use one of the breakers as a switch to connect the genset to my main. The problem with this approach is that I may forget and leave both main and genset connected. Dangerous. Where could I source some kind of transfer switch and is it a complex installation? I can imagine one of those crude mechanical double throw switches may do the trick but not sure if that's ideal.
6. I would probably want to have an external fuel tank to extend running time of a genset in case a power outage lasts up to about 24 hours. Are there commercially available day tanks for this purpose? Or do I rely on custom built ones?
Re: Generators
5. When I constructed my house, I had reserved a place in a safe area for a genset with output wires running up to my main circuit breaker. The electrician then ingeniously use one of the breakers as a switch to connect the genset to my main. The problem with this approach is that I may forget and leave both main and genset connected. Dangerous. Where could I source some kind of transfer switch and is it a complex installation? I can imagine one of those crude mechanical double throw switches may do the trick but not sure if that's ideal.
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Kailangan mo lagyan ng interlock plate sa braker panel gaya neto
Re: Generators
Kailangan mo lagyan ng interlock plate sa braker panel gaya neto
Ingenious! I thought I'll have to do the messy job of installing a DPDT switch.
Is that Interlock plate available locally?
Re: Generators
Ingenious! I thought I'll have to do the messy job of installing a DPDT switch.
Is that Interlock plate available locally?
I think you can fabricate using any rigid material. Plywood, perhaps?
Re: Generators
I think you can fabricate using any rigid material. Plywood, perhaps?
Plywood may be too thick. And that slide is something difficult.
It's one of those things nakakatamad gawin and probably cheap enough to buy.
Re: Generators
o kaya yung mga mas murang version ng mga manual transfer switch (about 1.5k or less ang huling canvass ko sa binondo):
Re: Generators
Is it ok to DIY a generator using 7.5 hp briggs and straton gas engine coupled with a 3KVA dynamo? I saw a lot of MIC generator in this type of set up but using diesel engines. Does a dynamo needs AVR for electronic gadgets and appliances?
Re: Generators
^i am not the expert sa bagay na ito pero malamang kakayanin sir dahil less than 50% duty yung b&S engine mo with the 3kVA generator.
you must also determine thet specific speed the generator is rated to put out the certain rated power, etc. para malaman ang pulley sizes (in case indirect trans) or the gear reduction ratio.
as with the AVR, recommended to use po ito.
Re: Generators
Can anyone suggest a good brand/model ? 😀 Am looking for one at the 6-7k range, planning to power:
1 x 3/4hp AC
1 x 1hp AC
3/4hp water pump(although pwede naman alternate with the AC)
lights
a few fans
If not a durable brand, then at least one that has local service support.
At least initially i don't plan to put in an ATS, just lay out some long extensions going to the appliances
i know Honda, Robin Subaru, Yanmar are the best, pero parang ginto po ang presyo; totally clueless on China gensets, although Kipor keeps popping up -- there's at least 3 local shops carrying these(am assuming me local support na rin)
Are Promate gensets any good? i think they're made in China din, but at least you got a local company(Powertech Asia) providing local support.
How about Brigss-Stratton? Though i imagine ka-presyo na rin to ng Honda/etc.
thanks!
Re: Generators
according to one study that i've read before regarding on small engines, briggs & stratton is on the low-mid level performance. the best would be the viets, koreans, and some i cannot recall.
may nabasa ako on some website that again i cannot recall is yung Weima generator (3kVa or up). the author says its well-built for its reasonable price...webpage ito ng isang foreigner na nagtayo ng bahay dito sa pinas. somewhere in west visayas i think.
Re: Generators
according to one study that i've read before regarding on small engines, briggs & stratton is on the low-mid level performance. the best would be the viets, koreans, and some i cannot recall.
may nabasa ako on some website that again i cannot recall is yung Weima generator (3kVa or up). the author says its well-built for its reasonable price...webpage ito ng isang foreigner na nagtayo ng bahay dito sa pinas. somewhere in west visayas i think.
nice input miked.
If the B/S engines are still made in U.S., then its the best to use in the small engine class with the price at around p9000 +. I'm looking to set up a generator using 3KW pure copper alternator driven by 7.5 HP B/S with a rated rpm of 3600. The alternator only needs 1800 rpm to put out 230V at 60hz..and yes they have built in AVR for the price of p6500.
I prefer the gasoline engine over diesels due the maintenance and the noise issues..and I prefer this type of set up than the portables na directly driven..pag nasira kasi buo ang sira or mahirap hanapin ang sira.
