Cov Lus Piav Qhia Txog THW THHN thiab THWN Hlau

THHN, THWN thiab THW yog txhua hom xov hlau hluav taws xob ib leeg siv hauv tsev thiab tsev kom xa hluav taws xob. Yav dhau los, THW THHN THWN yog cov xov hlau sib txawv nrog kev pom zoo thiab daim ntawv thov sib txawv. Tab sis tam sim no, ntawm no yog xov hlau THHN-2 dav dav uas npog txhua qhov kev pom zoo rau txhua qhov sib txawv ntawm THHN, THWN thiab THW.

1. THW Hlau yog dab tsi?
Thw hlau yog lub npe ntawm thermoplastic, hlau uas tiv taus kub thiab dej. Nws yog ua los ntawm cov hlau tooj liab thiab PVC rwb thaiv tsev. Nws yog siv rau kev siv hluav taws xob thiab teeb pom kev zoo hauv kev lag luam, kev lag luam thiab kev nyob hauv tsev. Hom hlau no siv tau rau hauv qhov chaw qhuav thiab ntub, nws qhov kub siab tshaj plaws ntawm kev ua haujlwm yog 75 ºC thiab nws qhov hluav taws xob ntawm kev pabcuam rau txhua daim ntawv thov nws yog 600 V.

Tsis tas li ntawd xwb, lub npe luv THW tsis muaj lub cim "N" rau nylon-coated. Lub nylon txheej zoo li ib daim yas me me thiab tiv thaiv cov xov hlau zoo sib xws. Yog tsis muaj nylon txheej, tus nqi xov hlau THW pheej yig heev tab sis nws muab kev tiv thaiv tsawg heev rau ntau yam teeb meem ib puag ncig.

THW Wire Strandard
• ASTM B-3: Cov Hlau Tooj Liab Uas Tau Kub Los Yog Cov Hlau Mos.
• ASTM B-8: Cov Hlau Tooj Liab Uas Muaj Cov Hlau Txuas Hauv Cov Txheej Concentric, Tawv, Ib Nrab-tawv lossis Mos.
• UL – 83: Cov Hlau thiab Cov Cables Uas Muaj Cov Khoom Siv Thermoplastic Rwb Thaiv.
• NEMA WC-5: Cov Hlau thiab Cov Cables Uas Muaj Cov Khoom Siv Thermoplastic Insulated (ICEA S-61-402) rau Kev Xa thiab Kev Faib Fais Fab.

2. THWN THHN Hlau yog dab tsi?
THWN thiab THHN txhua tus ntxiv "N" hauv cov ntawv luv yog, qhov ntawd txhais tau tias lawv yog cov hlau nylon-coated. THWN hlau zoo ib yam li THHN. THWN hlau yog dej-resistant, ntxiv "W" rau hauv cov ntawv luv. THWN zoo dua THHN hauv kev ua haujlwm dej-resistant. THHN lossis THWN txhua tus tuaj yeem siv rau lub zog thiab teeb pom kev zoo hauv kev lag luam, kev lag luam thiab cov chaw nyob, lawv yog qhov tshwj xeeb tsim rau kev teeb tsa tshwj xeeb los ntawm cov ducts nyuaj thiab siv rau hauv cov cheeb tsam abrasive lossis muaj kuab paug nrog roj, roj, roj av, thiab lwm yam thiab lwm yam tshuaj lom neeg corrosive xws li xim, cov kuab tshuaj, thiab lwm yam. Hom con no