Cov hlau ua los ntawm tooj liab uas tsis tshua muaj zog kub yog siv dav hauv cov khoom siv hluav taws xob tsawg, cov khoom siv thermal overload relay, thiab lwm yam khoom siv hluav taws xob tsawg. Nws yog ib qho ntawm cov khoom siv tseem ceeb ntawm cov khoom siv hluav taws xob tsawg. Cov khoom siv uas peb lub tuam txhab tsim tawm muaj cov yam ntxwv ntawm kev tiv taus zoo thiab ruaj khov. Peb tuaj yeem muab txhua yam hlau puag ncig, hlau tiaj tus thiab hlau ntawv.
CuNi34yog ib hom hlau uas tsis tshua muaj zog (cua sov). Nws yog ib qho ntawm cov ntaub ntawv tseem ceeb ntawm cov khoom siv hluav taws xob qis. Nws yog siv dav hauv cov khoom siv hluav taws xob qis, cov pam hluav taws xob, thermal overload relay thiab lwm yam khoom siv hluav taws xob qis.
Tooj liab nickel alloy series: Constantan CuNi40 (6J40), CuNi1, CuNi2, CuNi6, CuNi8, CuNi10, CuNi14, CuNi19, CuNi23, CuNi30, CuNi34, CuNi44.
Cov qib tseem ceeb thiab cov khoom
| Hom | Kev tiv thaiv hluav taws xob (20 degree Ω) mm²/m2) | coefficient kub ntawm kev tsis kam (10^6/degree) | Cov chaw nkaum ity g/mm² | Qhov kub siab tshaj plaws (°c) | Qhov kub yaj (°c) |
| CuNi1 | 0.03 | <1000 | 8.9 | / | 1085 |
| CuNi2 | 0.05 | <1200 | 8.9 | 200 | 1090 |
| CuNi6 | 0.10 | <600 | 8.9 | 220 | 1095 |
| CuNi8 | 0.12 | <570 | 8.9 | 250 | 1097 |
| CuNi10 | 0.15 | <500 | 8.9 | 250 | 1100 |
| CuNi14 | 0.20 | <380 | 8.9 | 300 | 1115 |
| CuNi19 | 0.25 | <250 | 8.9 | 300 | 1135 |
| CuNi23 | 0.30 | <160 | 8.9 | 300 | 1150 |
| CuNi30 | 0.35 | <100 | 8.9 | 350 | 1170 |
| CuNi34 | 0.40 | -0 | 8.9 | 350 | 1180 |
| CuNi40 | 0.48 | ±40 | 8.9 | 400 | 1280 |
| CuNi44 | 0.49 | <-6 | 8.9 | 400 | 1280 |
150 0000 2421