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Video: Yuav ua li cas thiaj nrhiav tau VA ntsuas ntawm lub transformer?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2024-01-18 08:15
Lub hauv paus formula yog:
- VA ÷ VOLTS = Qhov siab tshaj plaws amp load. Yog li, siv cov qauv no, a 75 VA rated 24 volt transformer muaj qhov siab tshaj plaws ntawm 3.125 amps.
- 75 VA ÷ 24 volts = 3.125 amps. yog li no Circuit Court yuav fused ntawm 3 amp siab tshaj plaws fuse.
- 250 VA ÷ 24 volts = 10.41 amp.
- 10 amp fuse × 24 volts = 240 VA rating .
Tsuas yog li ntawd, VA ntsuas ntawm lub transformer yog dab tsi?
Yog ib transformer yog ntsuas ntawm 120VA nws txhais tau hais tias nws tuaj yeem tuav 120 volts ntawm 1-ampere lossis 1 amp ntawm tam sim no. Cov VA luv luv rau Volt-Ampere lub npe ntawm lub zog. A transformer ntsuas ntawm 1.2 KVA yog lwm txoj kev hais tias 1200 VA los yog 120 volts ntawm 10 amps ntawm tam sim no.
Ib sab saum toj, pes tsawg amps tuaj yeem ua 40va transformer kov? 1.66 amp 1
Ntawm no, yuav ua li cas koj nrhiav tau tam sim no nyob rau hauv ib tug transformer?
Yog vim li cas koj xav tau qhov loj dua transformer los khiav cov khoom siv, koj tseem faib cov wattage los ntawm qhov voltage rau nrhiav tus tam sim no . Rau 120-volt thawj, 2000-watt transformer , faib 2000 los ntawm 120 rau cov tam sim no (2000 watts / 120 volts = 16.67 amps). Rau 240-volt, 3000-watt transformer , cov tam sim no yog 12.5 amp.
30 Va txhais li cas ntawm transformer?
hlo, 16v yog qhov sib txawv transformer voltage rau doorbells. Qhov ntsuas volt-amp (watts) ntawm qhov transformer yuav tsum sib npaug los yog ntau tshaj qhov yuav tsum tau wattage ntawm lub buzzer lossis chime unit. 30 VA yog feem ntau yog tansformer siv nrog chime units thiab tsuas yog ole ding dong tswb yog tsawg li 10 volt amps.
Pom zoo:
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