Description

Applications

For use on single phase and three phase primary underground distribution systems operating at 20kV phase to phase. Suitable for either direct burial or installation in ducts.

Construction

Copper concentrically stranded compressed conductor, triple single head extruded conductor shield, XLPE (cross-linked polyethylene) insulation and easy strippable insulation shield, all dry nitrogen cured; solid bare copper wires uniformly spaced around the cable as a concentric neutral; LLDPE or PVC jacket.

Standards

· IEC60502-2 Specification for Extruded Dielectric Shielded Power Cables Rated 3 through 30Kv
· IEC60228 Specification for cable conductors
· AEIC CS8 Specification for Extruded Dielectric Shielded Power Cables Rated 5 through 46kV
· ICEA S-94-649 Standard for Concentric Neutral Cables Rated 5,000 – 46,000V
· ICEA T-31-610 Guide for Conducting a Longitudinal Water Penetration Resistance Tests on Blocked Conductors
· ICEA T-34-664 Test Method for Conducting Longitudinal Water Penetration Resistance Tests on Longitudinal Water Blocked Cables

Notes

· Ampacities are based on the NEC.
· Cable Tray: Three single cables, installed in uncovered cable tray in accordance with NEC Section 392.13; operating at 105°C conductor, at an ambient temperature of 40°C.
· Buried Duct: Three cables per duct operating at 105°C conductor, 20°C ground ambient, earth ρ = 90, 100% load factor.
· Conduit in Air: Three cables per isolated conduit in air at 40°C; operating at 105°C conductor (NEC Table 310.73).
· Maximum conductor temperature: 90°C normal continuous, 130°C overload, 250°C short circuit.

Conductor		Round copper stranding, Compacted, Class 2
Internal semiconductor over conductor		Extruded layer of Conductive Material
XLPE insulation thickness,	mm	4.5
outer semiconductive over XLPE insulation		Separable layer of conductive material extruded
Metal copper screen section	mm2	16
Diameter of copper wire in metal screen	mm	0.584
Number of copper wire in metal screen		60
Outer jacket thickness and material	mm	2.4, Polyethylene, ST7, Red
UV resistant		Ultraviolet (UV)
Dimensions
Conductor section	mm2	1×630
Diameter of conductor	mm	29.6
Electric character
voltage phase to earth	KV	12
voltage phase to phase	Um (KV)	20
Pulse voltage	KV	125
Rated current (outdoor)	A	1095
DC resistance at 20 ° C	Ohm/km	0.047
Inductive reactance	Ohm/km	0.090
Capacitance	µf / Km	0.614
Operating temperature	.
Maximum allowable temperature in continuous operation	°C	90
Maximum allowable temperature regime shorts	°C	250

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