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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