PBwel Suspended Earthing Spigots
The Spigot is a clamp and spigot system made of aluminium that can be permanently installed on new or existing substation busbars. It can hold up to five PBwel line end clamps with a diameter of 38mm, eliminating the need for the heavier 115mm to 250mm clamps.
The Suspended Earthing Spigot is designed to be installed easily, either during the initial erection of a new substation busbar system or subsequently, as an enhancement to an existing system. It comprises a range of three clamps machined to fit any of the busbar sizes currently used in substations throughout the UK, from 115mm to 250mm diameter.
The appropriately machined clamp is supplied in two halves that are bolted together around the busbar using the supplied fasteners that are tightened to prescribed torque settings. Its lightweight makes it possible for one person to install. A 38mm diameter spigot and corona shield, common to all spigot clamps and busbar sizes, is then bolted onto the clamp. This is positioned horizontally to cater for busbars at any angle from horizontal to 60°, before tightening to a prescribed torque setting.
The Suspended Earthing Spigot fully conforms to the requirements of the UK Electricity Supply Industry and has successfully completed:
Performance Characteristic
- 1kN Mechanical Load
- 900 Amps Continuous Current Rating
- RIV and Corona Discharge Test @ 400kV Rating
- 80kA/1s Short Circuit Rating including a peak at 200kA.
- 40kA/3s Short Circuit Rating including a peak at 100kA.
Suspended Busbar types and part numbers
| Product Preference | Body Part Number | Spigot Part Number | Busbar Size (mm) |
|---|---|---|---|
|
CE75/250 |
EFF-16771 |
EFF-16780 |
250 |
|
CE75/220 |
EFF-16772 |
EFF-16780 |
220 |
|
CE76/200 |
EFF-16773 |
EFF-16780 |
200 |
|
CE76/190 |
EFF-16774 |
EFF-16780 |
190 |
|
CE76/160 |
EFF-16775 |
EFF-16780 |
160 |
|
CE77/140 |
EFF-16776 |
EFF-16780 |
140 |
|
CE77/127 |
EFF-16777 |
EFF-16780 |
127 |
|
CE77/120 |
EFF-16778 |
EFF-16780 |
120 |
|
CE77/115 |
EFF-16779 |
EFF-16780 |
115 |
* Note: A Suspended Busbar requires both a body and spigot assembly as shown upon the chart.
Customer Benefits
- Quick Installations
- Can be set up by one person
- Suitable for existing and new busbars
- National Grid Approved
* National Grid Registered / 400kV Earth Spigot / EGICode:BC4P0001
View our full range of Substation Earthing Spigots
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PBwel is the leading designer, manufacturer and supplier of quality electrical safety products.
PBwel is a globally recognised designer, manufacturer and supplier of temporary portable earthing, voltage detectors, Buchholz relays and electrical safety products.
With a heritage spanning over eighty years, and world-class experience in equipment designed for the safe maintenance of power systems, PBwel provides customers with high-quality service, reliable solutions and technical expertise.
