skip to Main Content

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: 650mm 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

Parts List

Descriptions/Dimensions (mm)Part NoOverall Length
(mm)
Overall Width
(mm)
Depth
(mm)
Weight
(kg)
SIT Pit Lid and Collar Assembled143068662562650162

PDFSpec Info

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

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

Parts list

Descriptions/Dimensions (mm)Part NoOverall Length
(mm)
Overall Width
(mm)
Depth
(mm)
Weight
(kg)
SIT Pit Lid and Collar Assembled143069650550890156

PDFSpec Info

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 Shallow Collar & Lid Assembled 142322 662 562 160 100
SIT Pit Support Stand 142319 230 200 150 7

Descriptions/Dimensions (mm)Part NoOverall Length
(mm)
Overall Width
(mm)
Depth
(mm)
Weight
(kg)
SIT Pit (450 deep)14232045035045028
SIT Pit (730 deep)14232150040073049
SIT Pit Deep Collar & Lid Assembled142958662562200127
SIT Pit Shallow Collar & Lid Assembled142322662562160100
SIT Pit Support Stand1423192302001507
Universal Lifting Key84306---0.6
Back To Top