Generators... How, where, how much?

**boybi** · June 6th, 2013 10:14 AM

Originally Posted by CVT

Bakit bro.,- 50Hz ba ang iyong genset?

May nabibili niyan sa internet...

We recently bought 3 kasi....

19.4K:tomato:

3 phase to single phase converter hinahanap ko.
3ph kasi genset, pero single phase lang nakalinya sa bahay. Ayaw ko na sanang baguhin pa yung circuit sa bahay.

**CVT** · June 6th, 2013 10:32 AM

Originally Posted by boybi

3 phase to single phase converter hinahanap ko.
3ph kasi genset, pero single phase lang nakalinya sa bahay. Ayaw ko na sanang baguhin pa yung circuit sa bahay.

No need to buy a phase converter.. Iba ito sa iniisip mo.

Bro.- 3phase - 3 sinusoidal waves iyan na 120deg off phase sa isa't isa,- kaya walang time na zero ang voltage - pang machine application.

Bro.,- Puwedeng line to line or line to neutral(kung WYE configuration) ang kunin mong linya (isa ito sa 3 sinusoidal wave)... Pero,- tama ba ang voltage nito sa iyong requirement? A multimeter set to VAC should be able to give you the effective voltage level... However, the frequency should be spec'ed on your genset.

Typically line to line voltage is 1.73 x line to neutral voltage. (1.73 is square root of 3)

I assume may ground iyan... i measure mo rin ang line to ground voltage.

Else, kailangan mo ng step up or step down transformer,- whatever is appropriate.

19.4K:tomato:

**boybi** · June 6th, 2013 10:35 AM

Originally Posted by CVT

Bro.- 3phase - 3 sinusoidal waves iyan na 120deg off phase sa isa't isa,- kaya walang time na zero ang voltage - pang machine application.

Bro.,- Puwedeng line to line or line to neutral(kung WYE configuration) ang kunin mong linya (isa ito sa 3 sinusoidal wave)... Pero,- tama ba ang voltage nito sa iyong requirement?

I assume may ground iyan... i measure mo rin ang line to ground voltage.

Else, kailangan mo ng step up or step down transformer,- whatever is appropriate.

19.4K:tomato:

Naku, wala ako naintindihan sa post mo. Hehehehe

**CVT** · June 6th, 2013 10:51 AM

Originally Posted by boybi

Naku, wala ako naintindihan sa post mo. Hehehehe

Bro., simple lang (di ba ME ka ng mahal nating Berde?)...

1. Get a multimeter and set it to VAC (voltage - AC)
2. 3-phase iyan so tatlo ang ports or "lines"
3. Connect your multimeter probes in 2 of those terminals
4. It should read 220V for you to able to use it in your house.
5. If 220V - then connect those two ports you just measured to your house electrical line. You should be okay
6. If not - say 400V - you need a stepdown transformer to bring it down to 220V - take note of the power requirement of your house - 5KVA/W for example
7. If not - say 110V - you need a step up transformer to bring it up to 220V - take note of the power requirement of your house - 5KVA/W for example
8. Frequency - read it from the manual or the plate on the genset - should be 60Hz. If not you need a frequency or phase converter.

19.4K:tomato:

**boybi** · June 6th, 2013 10:59 AM

Di ba nagkaka uneven load sa genset if 2 terminals/lines lang ang gagamitin ko?
240V ang voltage ng genset.

And if 2 terminals/lines lang gamitin ko, tama ba na hindi na full capacity ng genset ang magagamit ko?

**CVT** · June 6th, 2013 11:03 AM

Originally Posted by boybi

Di ba nagkaka uneven load sa genset if 2 terminals/lines lang ang gagamitin ko?
240V ang voltage ng genset.

And if 2 terminals/lines lang gamitin ko, tama ba na hindi na full capacity ng genset ang magagamit ko?

Uneven loading should be the least of your worries bro.

Actually, ginagawa iyang load balancing ng power distribution companies....

Yes,- hindi full capacity ng genset dahil iyong dalawang phases,- walang load,- wasted energy pero minimum lang dahil nga walang load.... Your new capacity is full capacity of genset divided by 1.73.

Ano ang full power capacity ng 3-phase genset mo?

Important na 60Hz iyan,- else delikadong gamitin ang aircon, ref at ibang motors sa bahay.....

19.4K:tomato:

**boybi** · June 6th, 2013 11:04 AM

45kva.

Sabi kasi ng electrician masisira daw dynamo if uneven ang load.

**CVT** · June 6th, 2013 11:22 AM

Originally Posted by boybi

45kva.

Sabi kasi ng electrician masisira daw dynamo if uneven ang load.

Based on my limited experience bro.,- it is just lost power on the 2 phases. Of course, you observe...

Just make sure that you are within the power (capacity) that can be supplied by the single-phase line-to-line connection.

19.4K:tomato:

**boybi** · June 6th, 2013 11:26 AM

So if my genset is 45KVA and I'll just use one phase, what's the equivalent capacity that I can utilize from the genset?

Right now, my genset supplies the following:
1 phase to my office
1 phase to our dirty kitchen/dining/maid's quarters/workers' quarters
1 phase to the house.

Lilipat ko na kasi office ko so mawawalan\ ng load sa office. Mababawasan din yung load sa isa kasi lilipat din workers' quarters.

**Retz** · June 6th, 2013 11:51 AM

Originally Posted by badkuk

i'm kinda worried if it would explode and stuff...at least ung diesel fuel di ganun ka flammable, e gasolina fumes pa lang sasabog na. Praning ba sir? Guilty as charged :D

Sir ung mga sasakyan natin na gas, hindi naman sumasabog