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The Tony Davies High Voltage Laboratory

Backfill, Sand And Soil

The characterisation of materials surrounding buried cables is of great importance in terms of ensuring, post-energisation, that the cable insulation does not experience excessive temperatures under normal operating conditions.  In order to determine parameters such as soil thermal resistivity we need at least 5 kg of the candidate material(s) in order to prepare suitable test samples.    

Recently used standards

Number Name Year
TS 3.05.07 National Grid  - Installation Requirements for Power and Auxiliary Cables 2011
BS 1377-2 Methods of test for Soils for civil engineering purposes — Part 2: Classification tests 1990
BS 1377-4 Methods of test for Soils for civil engineering purposes — Part 4: Compaction-related tests 1990
IEEE Std 442
IEEE Guide for Soil Thermal Resistivity Measurements
1996
Energy Networks Association TS 97-1
TS 97-1 "Special Backfill Material for Cable Installations"
1997

If you are considering testing of a backfill material, please contact us and include the following information:

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