Paper-insulated leh rubber-plastic-insulated cable-te venna test-naah hian a tlangpuiin insulation resistance leh withstand voltage test chauh a tel a ni.
Cable insulation resistance test dawnin a hnuaia mi hi hre reng ang che:
1) Insulation resistance tehna hmanraw hi cable sei tlemte tan a tha hle. Absorption ratio tehna leh chhut nan megohmmeter hman a ni tlangpui. Test condition ang chiah hnuaiah hian cable insulation a tha zawk chuan absorption ratio a sang zawk thin.
2) A tlangpuiin cable insulation resistance value chungchangah hian dan bik a awm lo. Cable pakhat insulation condition chu original records nen khaikhin a hriat tur a ni. Temperature hian cable insulation resistance a nghawng avangin, tehkhin nan cable insulation test neih chhung hian boruak lum leh vawt ang chi khaw lum leh vawt te chu record tur a ni.
3) Megohmmeter hman tur: Cable voltage 1 kV hnuai lam tan chuan 500-1000 V megohmmeter hmang ang che; cable voltage 1 kV leh a chunglam tan chuan 1000-2500 V megohmmeter hmang ang che.
4) Test hmain cable chu a discharge kim vek tur a ni a, conductive core leh cable metal sheath te chu ground-in a ground tur a ni.
5) Test hmain cable terminal sleeve chunglam chu tifai la, a chunglam leakage a tlem theih nan. Insulated cable core dang chu shielding loop atan hmang rawh. He insulated core tawp pahniha conductor te hi flexible metal wire hmanga test mek insulated core sleeve emaw insulation emaw ah connect la, megohmmeter shield terminals ah connect hmain vawi tam tak wrapping hmasa phawt ang che.
6) Insulation resistance tehna apiangah cable chu discharge la, ground rawh. Cable a sei chuan insulation condition a tha zawk. Grounding hun hi a rei zawk tur a ni a, a tlangpuiin minute khat tal a ni tur a ni.
DC withstand voltage test hi cable project handover emaw preventive testing emaw atana test bulpui ber a ni a, cable line pakhat chu hnathawhna atana tha a nih leh nih loh hriatna atana hmanraw bulpui ber a ni bawk. Operating cable-te chu DC withstand voltage testing neih fo tur a ni a, leakage current pawh teh tur a ni.
