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The Musician Forums => Music Technology & Pro Audio => Topic started by: dakilangpatricio on March 30, 2011, 10:39:37 PM

Title: Power consumption of power amps. Panu ma compute?
Post by: dakilangpatricio on March 30, 2011, 10:39:37 PM

Sir, gusto ko po sana malaman ilang watts/amps ang kain ng kuryente mga amps ko. .
Kasi mag rebuild ako ng power distributor ko kasi nagdagdag na ako moving heads ( i popost ko later pics, panala at mura pa weinas m575A)

ETo po mga amps ko:

LIVE FET450 450W @ 8omps per channel
LIVE FET650 650W @ 8omps per channel
LIVE FET1000 1000W @ 8omps per channel

kasi po diba P = I x V ang formula. . salamt po
para alam ko kung panu ko hahatiin mga breaker sa distributor. .

Plan is:

100A na breaker for main, then un hahatihatiin ko. . salamat

Title: Re: Power consumption of power amps. Panu ma compute?
Post by: NS10 Reborn on April 01, 2011, 07:13:09 AM

Quote from: dakilangpatricio on March 30, 2011, 10:39:37 PM

Sir, gusto ko po sana malaman ilang watts/amps ang kain ng kuryente mga amps ko. .
Kasi mag rebuild ako ng power distributor ko kasi nagdagdag na ako moving heads ( i popost ko later pics, panala at mura pa weinas m575A)

ETo po mga amps ko:

LIVE FET450 450W @ 8omps per channel
LIVE FET650 650W @ 8omps per channel
LIVE FET1000 1000W @ 8omps per channel

kasi po diba P = I x V ang formula. . salamt po
para alam ko kung panu ko hahatiin mga breaker sa distributor. .

Plan is:

100A na breaker for main, then un hahatihatiin ko. . salamat

Sana may makakasagot nito?  maths to preng...

Title: Re: Power consumption of power amps. Panu ma compute?
Post by: eirol_99 on April 01, 2011, 07:30:07 AM

di kasi specified ang current draw ng china amps eh kaya di makita, unlike sa u.s. brands nakaspecify,

pero sa tantya ko safe na 30 amps dyan.

Title: Re: Power consumption of power amps. Panu ma compute?
Post by: dakilangpatricio on April 01, 2011, 09:01:43 AM

cge sir. . thanks. . 30 amps na breaker gamitin ko for power amps . . or much better ung power distributor ko lagyan ko ng ampere meter db. . hehe. .

Title: Re: Power consumption of power amps. Panu ma compute?
Post by: ryanbairan on April 01, 2011, 10:34:31 AM

mahirap malaman un

kaylangan alam natin yung input ampere ng primary sa transformer, at ilang ampere yung output ng transformer,  :?

sana my mag bigay ng info dito :-)

Title: Re: Power consumption of power amps. Panu ma compute?
Post by: leoman53 on April 01, 2011, 03:21:12 PM

gummit ka ng power meter na tulad nito:

wattage in total:
(http://i5.photobucket.com/albums/y155/leoman53/6c33/6c33011.jpg)

Title: Re: Power consumption of power amps. Panu ma compute?
Post by: eirol_99 on April 01, 2011, 03:23:07 PM

open your power amps, nakatatak ata yung Volt-Ampere (VA) rating ng toroidal transformer nya dun, divide mo na lang ng 220 volts,

Title: Re: Power consumption of power amps. Panu ma compute?
Post by: leoman53 on April 01, 2011, 03:27:18 PM

Quote from: eirol_99 on April 01, 2011, 03:23:07 PM

open your power amps, nakatatak ata yung Volt-Ampere (VA) rating ng toroidal transformer nya dun, divide mo na lang ng 220 volts,

i think the thread starter would like to know the actual power consumed in operation, so a watt-meter is the right instrument to use....

i heard that watt-meters can be purchased at ACE hardware and costs less than 1k, i got mine for more from Tipidpc...

Title: Re: Power consumption of power amps. Panu ma compute?
Post by: eirol_99 on April 01, 2011, 04:22:31 PM

Quote from: leoman53 on April 01, 2011, 03:27:18 PM

i think the thread starter would like to know the actual power consumed in operation, so a watt-meter is the right instrument to use....

i heard that watt-meters can be purchased at ACE hardware and costs less than 1k, i got mine for more from Tipidpc...

ok sir, ilang watts po kaya nyan? nice toy, pero mga power distro is ammeter nakalagay sa panel nila.

Title: Re: Power consumption of power amps. Panu ma compute?
Post by: leoman53 on April 01, 2011, 05:41:18 PM

Quote from: eirol_99 on April 01, 2011, 04:22:31 PM

ok sir, ilang watts po kaya nyan? nice toy, pero mga power distro is ammeter nakalagay sa panel nila.

direct reading na ito, in the picture i posted, line voltage, curent, frequency, power factor , apparent power and true power can be diplayed...

Title: Re: Power consumption of power amps. Panu ma compute?
Post by: mr. ultimate on April 01, 2011, 08:50:15 PM

Sir dakilangpatricio mag ask ako sa china para sure ka kung ilan ampere ang bawat isang amp.

Title: Re: Power consumption of power amps. Panu ma compute?
Post by: leoman53 on April 01, 2011, 09:45:14 PM

Quote from: dakilangpatricio on March 30, 2011, 10:39:37 PM

Sir, gusto ko po sana malaman ilang watts/amps ang kain ng kuryente mga amps ko. .
Kasi mag rebuild ako ng power distributor ko kasi nagdagdag na ako moving heads ( i popost ko later pics, panala at mura pa weinas m575A)

ETo po mga amps ko:

LIVE FET450 450W @ 8omps per channel
LIVE FET650 650W @ 8omps per channel
LIVE FET1000 1000W @ 8omps per channel

kasi po diba P = I x V ang formula. . salamt po
para alam ko kung panu ko hahatiin mga breaker sa distributor. .

Plan is:

100A na breaker for main, then un hahatihatiin ko. . salamat

assuming efficiency of 70%:
LIVE FET450 450W @ 8omps per channel ======> 900/0.7 = 1286watts, @220volts, is 5.8amperes
LIVE FET650 650W @ 8omps per channel =======> 1300/0.7 = 1857watts, @220volts, is 8.44 amperes
LIVE FET1000 1000W @ 8omps per channel =====> 2000/0.7 = 2857watts, @220volts, 12.98 amperes

they can be accomodated in a single circuit of 30Amps......however if you have lots of them, then its another story....

remember that circuit breakers are there to protect your cables from burning,

Title: Re: Power consumption of power amps. Panu ma compute?
Post by: NS10 Reborn on April 04, 2011, 01:59:00 AM

Quote from: ryanbairan on April 01, 2011, 10:34:31 AM

mahirap malaman un

kaylangan alam natin yung input ampere ng primary sa transformer, at ilang ampere yung output ng transformer,  :?

sana my mag bigay ng info dito :-)

gusto ko yung flash mo sa gilid brad... sine wave na may harmonics ba?