Dab tsi yog lub hauv paus rau kev xaiv qhov ntsuas hluav taws xob rau AC Hipot test?
Kev ntsuas hluav taws xob yog txiav txim siab los ntawm cov cuab yeej ntsuas qhov ntsuas hluav taws xob (Um, BIL) thiab cov qauv khoom siv tau - tsis muaj ib qho hluav taws xob universal.
Voltage xaiv los ntawm cov khoom siv:
|
Khoom siv |
Txuj |
Test Voltage |
Duration |
|
Fais fab Transformer (Um Tsawg dua lossis sib npaug rau 72.5 kV) |
IEC 60076-3: Cov |
1.7 × Um / √3 (induced) + PD |
30 s ntawm kev xeem + 5 min ntawm Um/√3 |
|
Fais fab Transformer (Um> 72.5 kV) |
IEC 60076-3: Cov |
1.7 × Um / √3 (luv luv -ntev induced) |
60 s |
|
Kev faib tawm Transformer |
IEC 60076-11: Ua |
2.0 × rated voltage |
60 s |
|
Fais fab Cable (MV) |
IEC 60502-2: 2 |
2.5 × U₀ |
30 min (tau txais) / 60 min (maint) |
|
Fais fab Cable (HV) |
IEC 60840 (TSI) |
2.0 × U₀ |
60 feeb |
|
GIS / Switchgear |
IEC 62271-1: Cov |
1.2 × Wm |
60 s |
|
Bushing |
TS EN 60137 |
1.2 × Um (PF xeem) |
60 s |
|
CT / VT |
IEC 61869-1: Cov |
1.3 ~ 1.5 × Um / √3 (induced) |
60 s |
Phau ntawv qhia ua teb:
• Nco ntsoov sab laj daim ntawv teev npe (cov npe Um, BIL).
• Txo qhov hluav taws xob los ntawm 80% rau kev soj ntsuam cov khoom siv hnub nyoog (IEEE 400.2 rau cables).
• Tsis txhob tshaj lub npe BIL.
• Tshawb xyuas cov qauv khoom ua ntej xaiv qhov voltage - transformer vs. cable voltage txawv rau tib chav kawm.