HD620 Standard Cable

This harmonisation document's latest iteration, S3, was released by CENELEC and ratified by the country members in 2023.

It’s commonly linked to German Standard DIN VDE 0276 Part 620, as well as having national adoption references such as UNE-HD 620 in Spain, NEN-HD 620 in the Netherlands, CEI-HD 620 in Italy, and DS-HD 620 in Denmark.

HD620 Standard Cable Construction

HD 620 standard references may be listed alongside IEC 60502-2 on many medium voltage cable datasheets. A series of tests laid out in the standard - over and above those of IEC 60502-2 - are required for compliance. The method of compliance for these measurements is set out in the test methodology for HD 605 subclause 2.1.1 (insulation material) and, unless otherwise specified in the particular section of HD 620, HD 605 subclause 2.1.2 (sheath material).

Both HD 620 and IEC 60502-2 have compulsory conductor and insulation screening, often applied in a triple extrusion process with the insulation layer itself with the exception of cables with EPR and HEPR insulation which are compulsory for voltages above 3.6/6 (7.2)kV.

HD 620 Part 1 covers general requirements applicable to the entire range of cables (unless otherwise specified). Subsequent Parts look specifically at the insulation materials used :

HD620 Part 9 relates to HEPR (Hard Grade Ethylene Propylene Rubber) insulated single-core cables and single-core pre-assembled cables.

HD620 Part 10 is for XLPE (Cross-linked Polyethylene) insulated single core and 3 core cables, and again single-core pre-assembled cables.

And HD620 Part 11 is for EPR (Ethylene Propylene Rubber) insulated single core and 3-core cables.

Each Part is then further broken down into sub-sections to refer more specifically to the cable construction and materials used.

HD 620 Part 2, 3 and 4 are currently spare having been previously withdrawn, whilst HD 620 Parts 5 & 6 have been consolidated into Part 10 XLPE, and HD 620 Part 7 & 8 now combine to form Part 11 EPR.

HD620 Cable References

Part	Description
HD620 Part 1	General requirements for cables
HD620 Part 2	Spare
HD620 Part 3	Spare
HD620 Part 4	Spare
HD620 Part 5 and Part 6	Combined as new Part 10
HD620 Part 7 and Part 8	Combined as new Part 11
HD620 Part 9	HEPR (Hard Ethylene Propylene Rubber) insulated single core cables, and single core pre-assembled cables
HD620 9-E	Cables with Polyolefin compound sheath (Types 9E-1, 9E-3, 9E-4 and 9E-5)
HD620 9-I	Cables with HEPR insulation and PVC sheath, single core
HD620 Part 10	XLPE (Cross-linked Polyethylene) insulated single core and 3 core cables, and single core pre-assembled cables
HD620 10-A	Cables with XLPE (Cross-linked Polyethylene) insulation; PE or PVC sheath
HD620 10-B	Cables with XLPE insulation; PE or PVC or Polyolefin compound sheath
HD620 10-C	Cables with XLPE insulation; PE or PVC sheath
HD620 10-D	Cables with XLPE insulation; PE or PVC or Polyolefin sheath
HD620 10-E	Cables with Polyolefin compound sheath (Types 10E-1, 10E-3, 10E-4 and 10E-5)
HD620 10-F (Type 10F-1)	Single core cables with PVC sheath (Type 10F-1)
HD620 10-F (Type 10F-2)	Single core cables with PE sheath, laid up (Type 10F-2)
HD620 10-F (Type 10F-3)	Cables with PE sheath, laid-up around bare earth conductor (Type 10F-3)
HD620 10-F (Type 10F-4)	Cables with aluminium conductors and PE sheath, laid-up around a steel messenger (Type 10F-4)
HD620 10-F (Type 10F-5)	Cables with solid aluminium conductors and PE sheath, laid-up (Type 10F-5)
HD620 10-F (Type 10F-6)	Cables with aluminium conductors and PE sheath, laid-up around an insulated steel messenger (Type 10F-6)
HD620 10-F (Type 10F-11)	Cables with common PVC sheath and individual copper screen (Type 10F-11)
HD620 10-F (Type 10F-12)	Cables with common PE sheath and individual copper screen (Type 10F-12)
HD620 10-F (Type 10F-13)	Cables with common PE sheath and common copper screen (Type 10F-13)
HD620 10-F (Type 10F-14)	Cables with common PVC sheath and common copper sheath (Type 10F-14)
HD620 10-G (Type 10G-1)	Cables with PVC or PE sheath, laid-up (Type 10G-1)
HD620 10-G (Type 10G-2)	Cables with PVC or PE sheath, laid up around a messenger (Type 10G-2)
HD620 10-G (Type 10G-3)	Cables with PVC or PE sheath, not laid up (Type 10G-3)
HD620 10-G (Type 10G-4)	Cables with PVC or PE sheath, laid-up (Type 10G-4)
HD620 10-G (Type 10G-5)	Cables with PVC or PE sheath, not laid-up (Type 10G-5)
HD620 10-I1	Triplex formation medium voltage cables, aluminium conductor with XLPE insulation of reduced thickness, aluminium tape screen, and PE outer sheath for direct burial.
HD 620 10-I2	Triplex formation medium voltage cables, aluminium conductor with XLPE insulation pf reduced thickness, aluminium tape screen and PE sheath, laid-up around an aluminium clad steel messenger
HD 620 10-I3	Triplex formation medium voltage cables, aluminium conductor with XLPE (Cross-linked Polyethylene) insulation of reduced thickness, aluminium tape screen and PE outer sheath with improved impact performance
HD 620 10-J	Single core and three core cables with PE sheath (Type 10J-1) or PVC sheath (Type 10J-2) or PVC-flame retardant sheath (Type 10J-3)
HD 620 10-K	Cables with PE sheath (Type 10K-1) or PVC sheath (Type 10K-2)
HD 620 10-L	Cables with PVC sheath, laid-up (Type 10L-1) or not (Type 10L-2) around an additional conductor
HD 620 10-M	Single and three core cables with PE sheath (Type 10M-1) and PVC sheath (Type 10M-2)
HD 620 10-N	Cables with PE sheath (Type 10N)
HS 620 10-O	XLPE insulated cables: 11kV and 33kV copper wire screened with PE or Polyolefin sheath, and 33kV lead sheathed with PE outer sheath
HD 620 10-P	Cables with PVC sheath laid up around an earth conductor (Type 10P-1 and Type 10P-2), and cables with PVC sheath laid up around a messenger (Type 10P-3)
HD 620 Part 11	EPR (Ethylene Propylene Rubber) single core and 3 core cables
HD 620 11-N	EPR insulated cables with PE sheath (Type 11N)
HD 620 11-O	EPR insulated cables: 11kV and 33kV copper wire screened with PE or Polyolefin sheath