Hluav taws xob cov khoom ntawm photovoltaic cables

1. DC tsis kam

Lub DC tsis kam ntawm cov tub ntxhais conductive ntawm cov tiavphotovoltaic cablentawm 20 ℃ tsis ntau tshaj 5.09Ω / km.

2. Dej immersion voltage xeem

Lub cable tiav lawm (20m) yog raus rau hauv (20 ± 5) ℃ dej rau 1h thiab tom qab ntawd raug rau 5min voltage xeem (AC 6.5kV lossis DC 15kV) yam tsis muaj kev puas tsuaj.

3. Lub sij hawm ntev DC voltage kuj

Cov qauv yog 5m ntev thiab muab tso rau hauv cov dej distilled uas muaj 3% sodium chloride (NaCl) ntawm (85 ± 2) ℃ rau (240 ± 2) h, nrog rau ob qhov kawg raug rau cov dej nto rau 30cm. Ib qho hluav taws xob DC ntawm 0.9kV yog siv nruab nrab ntawm cov tub ntxhais thiab cov dej (cov tub ntxhais conductive txuas nrog tus ncej zoo thiab cov dej txuas nrog cov ncej tsis zoo). Tom qab muab cov qauv coj mus kuaj, qhov ntsuas dej ntsuas hluav taws xob yog ua tiav, qhov ntsuas hluav taws xob yog AC 1kV, thiab tsis tas yuav tsum muaj kev tawg.

4. Rwb thaiv tsev tsis kam

Kev rwb thaiv tsev ntawm cov khoom siv hluav taws xob ua tiav ntawm 20 ° C yuav tsum tsis pub tsawg dua 1014Ω·cm,

Kev rwb thaiv tsev ntawm cov kab tiav ntawm 90 ° C yuav tsum tsis pub tsawg dua 1011Ω·cm.

5. Sheath nto kuj

Qhov kev tiv thaiv nto ntawm lub tiav cable sheath yuav tsum tsis pub tsawg tshaj 109Ω.