Me ke nufin Voltage da Turn Ratio Test of Transformer?

Mi ce Voltage da Turn Ratio Test of Transformer?

Transformer Turn Ratio Definition

Amsa turn ratio na transformer yana nufin daraja daga cikin amsa turn a winding na HV zuwa cikin amsa turn a winding na LV.

Voltage Ratio Test of Transformer

Wata ya ba da wani test wanda ya shafi idan voltage ratio ta dace da turn ratio da aka tambaya, tare da koyar voltage a winding na HV da kuma ci gaba da voltage da aka faru a winding na LV.

Testing Procedure

• Karkashin, tap changer na transformer ya zama a matsayin hanyar mafi yawan takarda kuma terminals na LV suna fi saki.

• Kuma bayar supply na 3-phase 415 V a terminals na HV. Ci gaba da voltages da aka bayar a har phase (Phase-phase) a HV da kuma induced voltages a terminals na LV baki daya.

• Ba a yi ci gaba da voltages a terminals na HV da LV, tabbatar da tap changer na transformer ya zama da yawan takarda waɗanda kafin ya duba test.

• Dubara halayen da za su iya kan har yaduwar takarda.

Use of TTR Meter

Theoretical turn ratio ya sauki a TTR meter tare da koyar settings a adjustable transformer har zuwa lokacin da percentage error indicator ya nuna balance.

Reading a wannan indicator yana nufin deviation daga measured turn ratio zuwa expected turn ratio a percentage.

Detecting Faults

Out-of-tolerance, ratio test of transformer zai iya shahara saboda shorted turns, musamman idan akwai high excitation current da ke da shi. Open turns a winding na HV zai nuna exciting current mai kadan da kuma babu output voltage saboda open turns a winding na HV zai iya haƙar da excitation current a winding, yana nufin babu flux kuma babu induced voltage.