Say Overvoltage Withstand Test et nakaukolan a kabiangan na panangontrol tan panmintina na kalidad na saray kable na MV. Diad pangiyaplika na kontroladon atagey a boltahe, napaneknekan na satan so abilidad na kable ya mansungdo ed abnormal iran kondisyon na boltahe ya anggapoy pakaandi na insulasyon. Sayan panagsukimat et aglabat mangiseguro na kaligenan tan inkapanmatalkan na saray sistema na kuryente noagta mamaparukey met ed bilay na saray kable tan mangamper ed ag-iilaloan iran pakaandi na kuryente. No duga so panggawa unong ed estandarte na industriya, say Overvoltage Withstand Test et mangiiter na importantin kaseguroan ya saray MV cables et napanmatalkan ed serbisyo, diad ontan et naprotektaan so kagawaan tan saray totoo.
Legan na Overvoltage Withstand Test, saray high-voltage (HV) ya kagawaan ed panagsukimat, singa say AC hipot odino DC hipot test equipment, et kalkalnan mamaatagey ed boltahe ya inyaplika ed kable, kaslakan et anggad 2 anggad 3 beses ya mas atagey nen say rated voltage, depende ed saray estandarte tan detalye ya uusaren (singa saray estandarte na IEC odino IEEE). Say kable ya susuboken et na-energize ed sakey ya espisipikon karukey-kaslakan et pigaran minuto-pian naseguro ya anggapoy nagawan breakdown odino flashover.
Say test voltage et nayarin usaren ya usaren so sakey ed pigaran klase na high voltage sources, kaiba lay:
- AC Withstand Test: Mangiter na alternating current voltage, kaslakan et 5 anggad 60 minutos.
- DC Withstand Test: Mangi-apply na direct current voltage, ya mabetbet ya uusaren parad insulation fault localization.
- Impulse or Surge Test: Man-simulate na kirmat odino switching surges pian nasubok so kapasidad na cable transient.
Say leakage current na insulation, partial discharge activity, tan arum niran indicator et nabantayan legan na test pian naamtaan so kondisyon na kable.
Say nalalanor ya kagawaan ed panagsubok et singa diad leksab;