Laying 132kv XLPE Cables

Why can't the cable supplier provide this information?

dear,

In my opinion there is no problem in this type of intersection in 132KV XLPE cable laying because XLPE cables have enough insulation strength.

See, for instance, "Underground Cable Installation Manual" of WesternPower Utility.

www.westernpower.com.au/documents/ldd/UCIManual.pdf

10.1 The minimum depth of burial requirements for underground installations shall be as specified in Table

Notes

:

(1) 610 mm under roads, parking lots and other areas subject to vehicular traffic.

(2) 610 mm under roads.

(3) 1015 mm under roads where GI-1021.000 applies.

Note: GI-1021.000 (Supplement 2) requirement: 1015 mm under roads, unless a reinforced concrete slab is installed. Exception may be granted by the Manager of the Saudi Aramco Department responsible for the road, in which case the 610 mm or 760 mm minimum values from the table apply. Refer to the GI-for details.

In rocky areas where digging must be minimized, in areas where Table 2 depths would result in cables being below the water table, or to avoid underground obstructions such as other cables, conduits or piping, cables may be installed in one of the following configurations:

a) PVC coated rigid steel conduit with a total cover not less than 300 mm, which shall include a 50 mm thick (minimum) reinforced concrete slab over the conduit; or

b) PVC coated rigid steel conduit with a total cover not less than 150 mm, which shall include a 100 mm thick (minimum) reinforced concrete slab over the conduit; or

c) A reinforced concrete encased duct bank with 150 mm of total cover, measured from the top of the upper conduit, which shall include a minimum of 100 mm of concrete over the upper conduit.