Conductor Cross Section (Sq.mm) | Class of Conductor | No. of Strands/Max. Strand Diameter (mm) | Max. DC Conductor Resistance* at 20°C (Ω/km) | Max.L/R Ratio (μH/Ω) | Min. Insulation Resistance (GΩ x cm) | Max. Mutual Capacitance (nF/km) | Max.Inductance (mH/km) | Test Voltage Vrms (Core-Core) | Test Voltage Vrms (Core-Screen) |
---|---|---|---|---|---|---|---|---|---|
0.5 | 2 | 7/0.3 | 36.0 | 25 | 20 | 250 | 1 | 2000 | 2000 |
0.5 | 5 | 16/0.2 | 39.0 | 25 | 20 | 250 | 1 | 2000 | 2000 |
0.75 | 2 | 7/0.37 | 24.5 | 25 | 20 | 250 | 1 | 2000 | 2000 |
0.75 | 5 | 24/0.2 | 26.0 | 25 | 20 | 250 | 1 | 2000 | 2000 |
1 | 2 | 7/0.43 | 18.1 | 25 | 20 | 250 | 1 | 2000 | 2000 |
1 | 5 | 32/0.2 | 19.5 | 25 | 20 | 250 | 1 | 2000 | 2000 |
1.5 | 2 | 7/0.53 | 12.1 | 40 | 20 | 250 | 1 | 2000 | 2000 |
2.5 | 2 | 7/0.67 | 7.41 | 60 | 20 | 250 | 1 | 2000 | 2000 |