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SIT Pits

The Series Isolation Transformer (SIT) pit used for airfield runway lighting comprises a polymer concrete pit and collar with a galvanised lid. A polymer concrete  stand is also available to support the series isolation transformer above the base of the pit.

Length: 650mm
Width: 550mm
Depth: 600mm or 890mm

Shallow Sit Pit Diagram

Features & benefits

125 tonne rated lid and collar
2Galvanised steel lid with lifting key hole
3Lid anchored to collar
Sit pit collar
Brass ID plate
Series Isolation Transformer stand
SIT support stand
SIT pit base
9Secondary cable conduit provision
10Primary cable conduit provision
11Drainage hole in pit base
Deep Sit Pit Diagram

Features & benefits

125 tonne rated lid and collar
2Galvanised steel lid with lifting key hole
3Lid anchored to collar
Sit pit collar
Brass ID plate
Series Isolation Transformer stand
SIT support stand
SIT pit base
9Secondary cable conduit provision
10Primary cable conduit provision
11Drainage hole in pit base

Shallow Pit assembly

Complete assembly
Descriptions/Dimensions (mm) Part No Overall Length
(mm)
Overall Width
(mm)
Depth
(mm)
Weight
(kg)
SIT Pit Lid and Collar Assembled 143068 662 562 650 162

Individual components
Descriptions/Dimensions (mm) Part No Overall Length
(mm)
Overall Width
(mm)
Depth
(mm)
Weight
(kg)
SIT Pit (450 deep) 142320 450 350 450 28
SIT Pit Deep Collar & Lid Assembled 142958 662 562 200 127
SIT Pit Support Stand 142319 230 200 150 7

 

PDFSpec Info

Deep Pit assembly

Complete assembly
Descriptions/Dimensions (mm) Part No Overall Length
(mm)
Overall Width
(mm)
Depth
(mm)
Weight
(kg)
SIT Pit Lid and Collar Assembled 143069 650 550 890 156

Individual components
Descriptions/Dimensions (mm) Part No Overall Length
(mm)
Overall Width
(mm)
Depth
(mm)
Weight
(kg)
SIT Pit (730 deep) 142321 500 400 730 49
SIT Pit Deep Collar & Lid Assembled 142322 662 562 200 127
SIT Pit Support Stand 142319 230 200 150 7

 

PDFSpec Info

Accessories
Descriptions/Dimensions (mm) Part No Overall Length
(mm)
Overall Width
(mm)
Depth
(mm)
Weight
(kg)
Universal Lifting Key 142320 - - - 0.6

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