Stock Code: SH600522
Gap-type Thermal-resistant Aluminum-alloy Conductor Extra-high-strength Steel Reinforced
ZTT® ET EXPRESSWAY CHANNELTM GZTACSR-240/30
Conductor Technical Structure
| Parameter | Unit | Value | |
| Structure | Center: EST* wire | Nos./mm | 1/2.4 |
| Layer 1: EST wire | 6/2.4 | ||
| Layer 2: ZTAL* wire | 10/3.45(TW) | ||
| Layer 3: ZTAL wire | 15/3.55 | ||
| Standard | / | IEC 62420/ 62641/ 63248 | |
| Stranding direction of outer layer | Direction | Right-hand | |
| Conductor diameter | mm | 21.29 | |
| Cross section | ZTAL wire | mm2 | 241.95 |
| EST wire | 31.67 | ||
| Total | 273.62 | ||
| Conductor weight | kg/km | 922.7 | |
| Rated tensile strength | kN | 89.71 | |
| Modulus of Elasticity (E-Modulus) | kN/mm2 | 70.6 /190 (Above Knee Point) | |
| Linear expansion coefficient | 10-6/℃ | 19.4 / 11.5 (Above Knee Point) | |
| DC Resistance at 20℃ | Ω/km | 0.1211 | |
| Max. Working temperature | Continuous | ℃ | 210 (40 years) |
| Short term | 240 (400 hours) | ||
| Lay ratio | ZTAL layer | times | 15-wire layer 10-14 |
| 10-wire layer 10-16 | |||
| Aluminum clad invar layer | 6-wire layer 16-26 | ||
*ZTAL wire: Super thermal resistant aluminum alloy wire
*EST wire: Extra high strength steel wire.
Transmission of high current carrying capacity, suitable for line upgrading without replacing tower. High temperature low sag performance, increase current capacity by 100%, yet no need to replace tower.
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