IEC 60502-1 Description

Part 1 of this international Standard specified the construction, dimensions and test requirements of cables with extruded solid insulation with a rated voltage ranging between 1kV and 3kV for fixed installations such as distribution networks or industrial installations. Some of the cables covered by IEC 60502 have flame spread-reducing or Low Smoke Zero Halogen (LSZH) properties when exposed to fire.
IEC 60502-1 Cable properties

Insulated compounds
Thermoplastic - intended for cables with voltage rating smaller or equal to 3kV
Polyvinly Chloride (PVC)
Thermosetting
Ethylene Propylene Rubber or similar (EPR or EPDM)
High modulus or hard grade ethylene propylene rubber (HEPR)
Cross-linked Polyethylene (XLPE)

Sheathing compounds
Thermoplastic
Polyvinyl Chloride (PVC)
Polyethylene (PE)
Halogen-Free
Elastomeric
Polychloroprene
Chlorosulphonated polyethylene
Polymers similar to above

Conductors
Class 1 or Class 2
Plain
Metal-coated annealed copper
Plain aluminium
Aluminium alloy
Class 5
Plain
Metal-coated copper according to IEC 60228

Low Voltage Cables IEC 60502-1 Types

600/1000V, PVC Insulated Cables according to IEC 60502-1
600/1000V, PVC Insulated Cables according to IEC 60502-1(unarmoured)
600/1000V, PVC Insulated Cables according to IEC 60502-1(armoured)

600/1000V, XLPE Insulated Cables according to IEC 60502-1
600/1000V, XLPE Insulated Cables according to IEC 60502-1(unarmoured)
600/1000V, XLPE Insulated Cables according to IEC 60502-1(armoured)

600/1000V, PVC Insulated and Lead Sheathed Cables according to IEC 60502-1
600/1000V, PVC Insulated and Lead Sheathed Cables according to IEC 60502-1(unarmoured)
600/1000V, PVC Insulated and Lead Sheathed Cables according to IEC 60502-1(armoured)

600/1000V, XLPE Insulated and Lead Sheathed Cables according to IEC 60502-1
600/1000V, XLPE Insulated and Lead Sheathed Cables according to IEC 60502-1(unarmoured)
600/1000V, XLPE Insulated and Lead Sheathed Cables according to IEC 60502-1(armoured)

600/1000V, PVC Insulated Cables according to IEC 60502-1 (unarmoured)

Application:

Iec 60502-1 cables are used for electricity supply in low voltage installation system, Iec 60502-1 cables are suitable for installation in indoors and outdoors, in cable ducts, under ground, in power and switching stations, local energy distributions, industrial plants, where there is no risk of mechanical damage.

Construction:

Conductors:

Copper or Aluminium conductor, round standed or Shaped, Class 2 to IEC 60228, BS EN 60228. For smaller sizes, a solid round conductor, Class 1 as per IEC 60228, BS EN 60228 can also be supplied upon request.

Insulation:

PVC Insulation material and thickness shall be as per IEC 60502-1 and BS 6346. PVC material shall be Type A as per IEC 60502-1 or TI1 as per BS EN 50363.

PVC Insulation material as per SASO 1694 rated for 85°C continuous operation is also available upon special request.

Colour Code
Colour Code (1) :
    1 Core   :   Red or Black
    2 Cores   :   Red, Black
    3 Cores   :   Red, Yellow, Blue
    4 Cores   :   Red, Yellow, Blue, Black
    5 Cores   :   Red, Yellow, Blue, Black, Green
    Above 5 Cores:   Black Cores with White numerals
    Colour Code (2) :
    1 Core   :   Brown or Blue
    2 Cores   :   Brown or Blue
    3 Cores   :   Brown, Black, Grey
    4 Cores   :   Blue, Brown, Black, Grey
    5 Cores   :   Green/Yellow, Blue, Brown, Black, Grey
    Above 5 Cores:   Black Cores with White numerals

Assembly / Inner Sheath: Two, Three or Four insulated conductors are laid-up together with non-hygroscopic fillers and the assembly is bedded with an extruded layer of PVC. In case of non armoured cables, this layer may be omitted .

Armour: Aluminum/Galvanized Steel Wires applied helically over the bedding as per IEC 60502 or as per BS 5467, BS 6346. Single core cables shall be Aluminium wire armour. Aluminum/Steel Tapes applied helically over the bedding of multi-core cables as per IEC 60502.

Outer Sheath: Outer sheath shall be of Extruded PVC Type ST2 as per IEC 60502-1 or Type 9 as BS 6346/5467. Special type of PVC sheathing material such as Fire Retardant PVC, Anti-Termite PVC, Anti-Rodent PVC, Sunlight resistant PVC, Oil Resistant PVC are available on special request. Also, special sheathing materials such as LLDPE, MDPE, HDPE, LSF, CPE are available on request.

Fire Performance of Cable Sheaths :Cables can be supplied with special flame retardant PVC outer sheath to comply with the flame test requirements of IEC 60332-3-22, IEC 60332-3-23 and IEC 60332-3-24, can also supply cables with Low Smoke Halogen Free (LSHF) material according to IEC 60502-1, BS 7211, BS 6724 or other equivalent standards.

Cable Parameters:
PVC insulation Single core(unarmoured)

Nominal Cross Section	Diameter of Conductor (Approx.)	Nominal Insulation Thickness	Nominal Sheath Thickness	Overall Diameter (Approx.)
mm²	mm	mm	mm	mm
1x4	2.3	1	1.4	7.1
1x6	2.8	1	1.4	7.6
1x10	3.6	1	1.4	8.4
1x16	4.5	1	1.4	9.3
1x25	5.6	1.2	1.4	10.8
1x35	6.7	1.2	1.4	11.9
1x50	8	1.4	1.4	13.6
1x70	9.4	1.4	1.4	15.1
1x95	11	1.6	1.5	17.2
1x120	12.4	1.6	1.5	18.7
1x150	13.8	1.8	1.6	20.6
1x185	15.3	2	1.7	22.7
1x240	17.5	2.2	1.8	25.4
1x300	19.5	2.4	1.9	28.0
1x400	22.6	2.6	2.0	31.7
1x500	25.2	2.8	2.1	35.0
1x630	28.3	2.8	2.2	38.3