Skip to main content

Belajar Dasar SCADA

Bagini cara menguji rugi besi dan rugi tembaga pada trafo

just share aja nih untuk pengujian rugi2 trafo, semoga bermanfaat.

Jika trafo baru, maka pastinya sudah ditest seccara otomatis di pabrikan. namun jika ini perawatan atau perbaikan, maka tentu harusdiukur ulang.

Secara teori ada 3 losses yng harus diukur dan diukurnya pada kondisi NO LOAD, jadi tanpa beban. Ketiga loses itu adalah :
1. Iron losses at the core of the transformer, (rugi2 besi)
2. Dielectric losses at the insulating material and (rugi2 material isolasi)
3. The copper losses due to no-load current. (rugi2 tembaga)

Namun pada praktiknya, dua loses yang terakhir itu sangat kecil nilainya, jadi dalam pengukuran loses tanpa beban ini hanya akan diukur rugi2 besi nya saja.
berikut konfigurasi pengukurannya :






Nah, ampere meter dan voltmeter itu lah nanti yang akan mengukur berapa daya yang diserap oleh trafo tersebut.
Ini tambahan untuk total rugi2 ditambah rugi2 yang dihasilkan oleh eddy current nya :

During measurements, the supply voltage U´ is supplied to the transformer by the average value voltmeter. In this way, the foreseen induction is formed and as a result of this, the hysteresis losses are measured correctly. The eddy-current losses should be corrected according to equation below.

Pm = P0 · (P1 + k · P2)

Pm: Measured loss
P0: No-load losses where the voltage is sinusoidal

Here: P0 = Ph + PE = k1 · f + k2 · f2

k = [ U / U' ]2

P1: The hysteresis loss ratio in total losses (Ph) = k1 · f
P2: The eddy-curent loss ratio in total losses (PE) = k2 · f2

At 50 Hz and 60 Hz, in cold oriented sheet steel, P1 = P2 = % 50. So, the P0 no-load loss becomes:

Po = Pm / (P1 + k · P2) where P1 = P2 = 0,5

According to IEC 60076-1: Pm = P0 · (1 + d) where d = [ (U' - U) / U' ]
http://news.chivindo.com/736/bagini-cara-menguji-rugi-besi-dan-rugi-tembaga-pada-trafo.html

Comments

Popular posts from this blog

Augmented and mixed reality: what is it, and where is it going?

XR is a term that has become more prominent in the last few years. It encapsulates virtual, augmented, and mixed reality topics. The definition of each of these has become saturated in the past decade, with companies using their own definitions for each to describe their products. The new IDTechEx Report, “Augmented, Mixed and Virtual Reality 2020-2030” , distils this range of terms and products, compares the technologies used in them, and produces a forecast for the market next decade. This premium article discusses AR (augmented reality) and MR (mixed reality) in more detail. The report discusses 83 different companies and 175 products in VR (virtual reality), AR (augmented reality) and MR (mixed reality) markets. This promotional article specifically discusses the findings from this report of the augmented and mixed reality markets. Augmented Reality (AR) and Mixed Reality (MR) are two technologies which have become more prominent in the past ten years. AR is the use...

Nitro Pro Enterprise 13.19.2.356 Full Version

BAGAS31 – Nitro Pro Enterprise 13.19.2.356 Full Version adalah sebuah software dari Nitro Software yang berguna untuk membuat, melakukan convert, mengedit, dan melakukan share file PDF yang kamu miliki. Nitro Pro Enterprise   merupakan salah satu software untuk urusan PDF yang cukup populer saat ini dan memang sudah diakui kredibilitasnya, bahkan software ini pun digunakan untuk urusan pekerjaan oleh para professional. Versi Enterprise ini tentu saja memiliki fitur-fitur yang lebih banyak dan lebih lengkap dari versi biasa atau versi free nya. Di versi terbarunya ini, terdapat beberapa update dan tambahan, serta perbaikan bugs guna mengoptimalkan software ini sendiri. So, buat kamu yang membutuhkan software ini, langsung saja download melalui link di bawah. Screenshot : Download : Nitro Pro Enterprise 13.19.2.356 Full Version (32-Bit ) [ Zippyshare ] [ FileUp ] [ Mirrorcreator ] Nitro Pro Enterprise 13.19.2.356 Full Version (64-Bit ) [ Zippyshare ] [ Fi...

What is Active,Reactive and Apparent Power?

Active Power The power drawn by the load to do work is called the True power or Active power or real power. When electrical energy is fed to load the electrical energy gets converted into other forms of energy like thermal,mechnaical or chemical. Thus, the power actually consumed by electrical load is called the active power. A heater rated 220 volts, 400 watts consumes 400 watts when 220 volts is applied to its resistance element.The 400 watts power consumed by heater is the real power or active power. The active power is measured in kilo watt(kW) or MW. To calculate active power, the current flowing in phase with applied voltage is calculated.  The product of the voltage and the current in phase with the voltage gives the real power or active power.  Reactive Power The power which flows from the source to load and load to source is called the reactive energy. The reactive energy flows in both the direction. The reactive power is measured in kilo volts ampere reactive(kVAR) o...