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Airfield Lighting Cables
Adapter Extension cables are used for connection between isolating transformer, Secondary Lead and Airfield Lightning Unit. The adapter extension cables are rated for 6.6 A and 50 Hz.
Nyvin Cables
The British Standard states the requirements for 'Nyvin' type cables for aircraft wiring. The cables are suitable for use in circuits in which the voltage between conductors, between a conductor and a metal braid, surrounding it and between a conductor and the aircraft structure no where exceeds 600 Volts and in which the frequency doesn't exceed 1600 Hz.
The cables are suitable for use where no combination of ambient temperature and conductor current produces a stabilized conductor temperature in excess of 105oC . They are suitable for fixed wiring in aircraft at temperature upto 75oC, but are not suitable for severe flexing at temperatures below 30oC. The cables do not support combustion.
The generic name 'Nyvin' is applicable only to cables covered by this British Standard and complying with all its requirements.
The standard includes the following range of cables:
- Nyvin-Cable with a copper conductor and an insulation of PVC compound and glass braid with an outer protective covering of Nylon.
- Nyvinal-Similar to the Nyvin range but with a conductor of aluminum instead of copper.
- Nyvinmet-Simialr to the Nyvin range but with the addition of a metal braid.
- Nyvinmetsheath-Similar to the Nyvin Range but with the addition of a metal braid and a sheath comprising a polystar film tape, a nylon fibre or ribbon braid, nylon lacquered, to prevent abrasions in installations where Nyvinmet cable is in contact without a metal braid.
- Dunyvin, Trinyvin, Dunyvinal and Trinyvinal- Two or three-core cables consisting of two or three single Nylin or Nyvinal cables twisted together.
