
电缆的绝缘厚度与电压等级是相关的,一般来讲,电压越高,绝缘层越厚,但不成正比。不同电压等级橡塑绝缘电缆的绝缘厚度标称值参见表1?表6。
表1 聚氯乙烯(PVC)绝缘标称厚度 单位:mm
| 导体标称截面(mm2) | 额定电压U/U (U m)(kV) | |||
| 0. 6/1 (1.2) | 1.8/3 (3.6) | 3.6/6 (7.2) | ||
| 1.5, 2.5 | 0.8 | ― | ― | |
| 4,6 | 1 | ― | ― | |
| 10,16 | 1 | 2.2 | 3.4 | |
| 25,35 | 1.2 | 2.2 | 3.4 | |
| 50,70 | 1.4 | 2.2 | 3.4 | |
| 95,120 | 1.6 | 2.2 | 3.4 | |
| 150 | 1.8 | 2.2 | 3.4 | |
| 185 | 2 | 2.2 | 3.4 | |
| 240 | 2.2 | 2.2 | 3.4 | |
| 300 | 2.4 | 2.4 | 3.4 | |
| 400 | 2.6 | 2.6 | 3.4 | |
| 500?800 | 2.8 | 2.8 | 3.4 | |
| 1000 | 3 | 3 | 3.4 | |
| 导体标称截面(mm2) | 额定电压U0/U(Um)(kV) | |||
| 0.6/1(1.2) | 1.8/3(3.6) | 3.6/6(7.2) | ||
| 1.5?6 | 0. 7 | ― | ― | |
| 10,16 | 0.7 | 2 | 2.5 | |
| 25,35 | 0.9 | 2 | 2.5 | |
| 50 | 1 | 2 | 2.5 | |
| 70,95 | 1.1 | 2 | 2.5 | |
| 120 | 1.2 | 2 | 2.5 | |
| 150 | 1.4 | 2 | 2.5 | |
| 185 | 1.6 | 2 | 2.5 | |
| 240 | 1.7 | 2 | 2.6 | |
| 300 | 1.8 | 2 | 2.8 | |
| 400 | 2 | 2 | 3 | |
| 500 | 2.2 | 2.2 | 3.2 | |
| 630 | 2.4 | 2.4 | 3.2 | |
| 800 | 2.6 | 2.6 | 3.2 | |
| 1000 | 2.8 | 2.8 | 3.2 | |
| 导体标称截面 (mm2) | 额定电压W/ひ(Um) (kV) | ||
| 6/6(7.2) 6/10(12) | 8.7/10(12) 8.7/15(17.5) | 12/20(24) | |
| 16 | 3.4 | ― | ― |
| 25 | 3.4 | 4. 5 | ― |
| 35?1OOO | 3.4 | 4. 5 | 5.5 |
表4 交联聚乙烯(lxpe)和橡胶绝缘标称厚度Ⅱ单位:mm
| 导体标称截面(mm2) | 额定电压U0/U(Um)(Kv) | |||
| 18/30(36) | 21/35(40.5) | 26/35(40.5) | ||
| 50~1000 | 8.0 | 9.3 | 10.5 | |
表5 橡胶绝缘标称厚度I 单位:mm
| 导体标称截面(mm2) | 额定电压ひ。/ひ(Um)(kV) | |||
| 0.6/1(1.2) | 1.8/3(3.6) | |||
| EPR | HEPR | EPR | HEPR | |
| 1.5?6 | 1 | 0.7 | ||
| 10,16 | 1 | 0.7 | 2.2 | 2 |
| 25,35 | 1.2 | 0.9 | 2.2 | 2 |
| 50 | 1.4 | 1 | 2.2 | 2 |
| 70 | 1.4 | 1.1 | 2.2 | 2 |
| 95 | 1.6 | 1.1 | 2.4 | 2 |
| 120 | 1.6 | 1.2 | 2.4 | 2 |
| 150 | 1.8 | 1.4 | 2.4 | 2 |
| 185 | 2 | 1.6 | 2.4 | 2 |
| 240 | 2.2 | 1.7 | 2.4 | 2 |
| 300 | 2.4 | 1.8 | 2.4 | 2 |
| 400 | 2.6 | 2 | 2.6 | 2 |
| 500 | 2.8 | 2.2 | 2.8 | 2.2 |
| 630 | 2.8 | 2.4 | 2.8 | 2.4 |
| 800 | 2.8 | 2.6 | 2.8 | 2.6 |
| 1000 | 3 | 1.8 | 3 | 2.8 |
表6 橡胶绝缘标称厚度Ⅱ 单位:mm
| 导体标称截面(mm) | 额定电压:3.6/6(7.2)(kV) | |
| 无屏蔽 | 有屏蔽 | |
| 10~185 | 3 | 2.5 |
| 240 | 3 | 2.6 |
| 300 | 3 | 2.8 |
| 400 | 3 | 3 |
| 500~1000 | 3.2 | 3.2 |
