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
Features & benefits
 | 25 tonne rated lid and collar |
 | Galvanised steel lid with lifting key hole |
 | Lid anchored to collar |
 | Sit pit collar |
 | Brass ID plate |
 | Series Isolation Transformer stand |
 | SIT support stand |
 | SIT pit base |
 | Secondary cable conduit provision |
 | Primary cable conduit provision |
 | Drainage hole in pit base |
Parts List
| 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 |
Spec 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 |
Features & benefits
| 25 tonne rated lid and collar |
| Galvanised steel lid with lifting key hole |
| Lid anchored to collar |
| Sit pit collar |
| Brass ID plate |
| Series Isolation Transformer stand |
| SIT support stand |
| SIT pit base |
| Secondary cable conduit provision |
| Primary cable conduit provision |
| Drainage hole in pit base |
Parts list
| 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 Shallow Collar & Lid Assembled | 142322 | 662 | 562 | 160 | 100 |
| SIT Pit Support Stand | 142319 | 230 | 200 | 150 | 7 |
| 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 (730 deep) | 142321 | 500 | 400 | 730 | 49 |
| SIT Pit Deep Collar & Lid Assembled | 142958 | 662 | 562 | 200 | 127 |
| SIT Pit Shallow Collar & Lid Assembled | 142322 | 662 | 562 | 160 | 100 |
| SIT Pit Support Stand | 142319 | 230 | 200 | 150 | 7 |
| Universal Lifting Key | 84306 | - | - | - | 0.6 |