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Series Isolation Transformer Pit Range from ACO

sit pit

Ready for Take-off: ACO's SIT Pit Range

Never heard of a Series Isolation Transformer? Then you'd be forgiven for failing to recognise a series isolation transformer (SIT) Pit in an airfield runway or taxiway lighting system. This, the most invisible of technologies, is not in the peripheral of most airway passengers - or even pilots or flight crew, for that matter. The SIT Pit is, to most people who pass over the runway, imperceptible yet vital.

What is a SIT Pit?
The role of the SIT Pit is to house SITs, transformers that maintain the functionality of airfield runway lighting systems. Take into account the immense activity of aircraft over runways and taxiways, and the sturdiness, integrity and durability of the pits becomes integral to the safe passage of air traffic, which heavily relies on lighting systems for landing and takeoff. SIT Pits are specially formulated to hold SITs for airfield runway lighting and in this, the most testing of environments; they must be sturdy enough to survive 24 hour air traffic operations.

What is a SIT?
A series isolation transformer is a piece of electrical equipment which ensures the continuity of the lighting electrical circuit in the event of one lamp in the series failing to function. Series isolation transformers also allow the delivery of the correct current to individual lamps, so that low voltage lamps can be, in effect, isolated from high voltage lamps.



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1300 765 226

Emu Plains, NSW, 2750

Aco Profile

1300 765 226

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