450/750V Limited Fire Hazard Earthing Cables to SE774
Application
The single core signalling earth and power cables are used in safety signalling equipment rooms.
Standards
- SE774
- UNE 21027
Construction
- Conductors: Stranded tinned copper conductors.
- Insulation: Thermoplastic LSZH.
Electrical Characteristics at 20℃
| Nominal Conductor Cross Section | mm² | 1.0 | 4.0 | 6.0 | 16.0 | 35.0 |
| Maximum DC Conductor Resistance | Ω/km | 18.2 | 4.7 | 3.11 | 1.16 | 0.529 |
| Voltage Rating | KV | 0.45/0.75 | ||||
Mechanical and Thermal Properties
- Minimum Bending Radius: 7.5×OD
- Temperature Range:-25℃ to +85℃ (during operation); -10℃ to +70℃ (during installation)
Dimensions and Weight
| Cable Code | No. of cores& Nominal Conductor Cross Sectional Area No.×mm² |
No. & Nominal Diameter of Strands No/mm |
Nominal Insulation Thickness mm |
Nominal Overall Diameter mm |
Nominal Weight kg/km |
| RF774-ES07Z-U-450/750V-1G1 | 1×1.0 | 1/1.13 | 0.6 | 4.0 | 28 |
| RF774-ES07Z-U-450/750V-1G4 | 1×4.0 | 7/0.85 | 0.8 | 5.5 | 33 |
| RF774-ES07Z-U-450/750V-1G6 | 1×6.0 | 7/1.04 | 0.8 | 6.1 | 90 |
| RF774-ES07Z-U-450/750V-1G16 | 1×16.0 | 7/1.7 | 1.0 | 8.1 | 197 |
| RF774-ES07Z-U-450/750V-1G35 | 1×35.0 | 19/1.53 | 1.2 | 10.9 | 389 |
U is changed to K if the stranding class is changed from class 2 to class 5