Data cable for Cat. 7 cabling - now with fire protection class CCa DRAKA data cable UC900 SS23 for Cat. 7 cabling. Single pair shielding with common braided shield. Color code: Wsbl/bws, wswor/orws, wsgn/gnws, wsbr/brws. . Construction. Conductor: Copper wire, plain Ø 0.56 mm (AWG23). Insulation: Foam-skin polyethylene, Ø 1.4 mm. Versioning: 2 wires to pair. Versioning: 4 pairs (PiMf) to the soul. Pair shielding: Aluminium-coated plastic-composite film. Overall shield: Tinned copper braid (approximately 65% coverage). Protection sheath: FRNC, orange RAL 2003 . Electrical properties at 20°C±5°C. Loop impedance <= 150 Ohm/km Resistance unbalance <= 2%. Insulation resistance (500 V) >= 5000 MOhm*km. Capacity at 800 Hz (target value) 43 nF/km Unbalance of capacity (pair / earth) <= 1500 pF/km. Relative propagation speed approx. 79 %. Signal duration <= 425 ns/100m. Time difference <= 9 ns/100m. Testing voltage (DC, 1 min) wire/wire and wire/shield: 1000 V . Coupling resistance at 1 MHz <= 5
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