S: Waa maxay dhabta ah - rarka lumin, iyo sidee buu nidaamka imtixaanku u egyahay?
A: Maya - lumitaanka rarka (P₀), oo sidoo kale loo yaqaan luminta birta ama luminta xudunta, waa awooda la isticmaalo marka transformerku ku tamarsiiyo danab la qiimeeyay iyo inta jeer ee furan labaad{1}}waa la wareegay.
Qaybaha aan - lumin rarka:
• Luminta Hysteresis (~ 60-70% P₀) - tamarta lagu beddelo xayndaabka magnetic (∝ f × B¹·⁶).
• Khasaarida hadda jirta (~ 25-35% ee P₀) - qulqulka qulqulaya ee laminations (∝ f² × B² × t²).
• Khasaaraha korontada ku shaqeeya (~ 1-5%) + I²R dabaysha aasaasiga ah (aan la dayacin karin).
Habka tijaabada (IEC 60076-1 / IEEE C57.12.90):
|
Talaabada |
Ficil |
Xusuusin |
|
1 |
Furan- wareegga labaad (dhinaca LV) |
Hubi in badbaadada - labaad laga yaabo inay gaadho danab khatar ah |
|
2 |
Codso Uₙ lagu qiimeeyay f xagga hoose (dhinaca HV) |
Waveform THD <5% |
|
3 |
Cabbir V, I₀, P₀ |
Isticmaal koronto falanqeeye heerka 0.2 |
|
4 |
Ku duub I₀ sida % ee hadda la qiimeeyay |
Caadi ahaan 0.5-5% |
|
5 |
Ku saxan tixraac 20 darajo |
Sixitaanku waa yar yahay P₀ |
Qiimaha P₀ ee caadiga ah:
Qaybinta (100 kVA-2.5 MVA): 0.3-0.8% ee Pₙ
• Awood dhexdhexaad ah (5-50 MVA): 0.15-0.4%
• Awood weyn (100-500 MVA): 0.08-0.2%
• Xuddunta Amorphous: ~70% ka hooseeya hadhuudhka{1}} birta ku jihaysan
Sare P₀ waxay tusinaysaa: hoos u dhaca xudunta u ah, gaabyada interlaminar, kalagoysyada liidata, iyo xamaasad ka badan-
Oggolaanshaha: la qiyaasay P₀ In ka yar ama la mid ah dammaanadda + 15% (IEC 60076-1).