Type 66 Flexible Copper Screened Mining Cable, Mining Trailing & Rolling cable&Crane cable

OVERVIEW

SPECIFICATIONS

CONSTRUCTION

PARAMETER

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Applications

Electrically driven machines, movable electric apparatus in hazardous areas, portable electric apparatus Section feeders. Open cast mining, medium sized draglines, shovels and drills. Suitable for reeling purposes.
Other industrial applications.

Standards:

SANS 1520-2

CHARACTERISTICS:

Excellent ﬂexibility
Abrasion, tear resistant and ﬂame retardant
Temperature range: minimum ambient temperature is -25℃. Maximum conductor temperature is +90℃.
UV, sunlight, ozone and oil resistant

Specifications

Cold Resistant -25℃

UV Resistance

Working Temperature 90℃

Oil Resistance

Flame Retardant

construction

Conductor:

Flexible class 5 comply to SANS 1411-1 from tinned annealed copper wires, left hand with semi-conducting rubber screen

Insulation:

Ethylene propylene thermosetting compound type RD 3 comply to SANS 1411-3 and a strippable semi-conducting core screen (triple extruded)

Insulation screen:

The braid of tinned copper wires

Cable assembly:

Three tinned copper/nylon braid screened power cores and three unscreened pilot cores one in each interstice laid up in the right hand lay around semi-conductive ﬁller centre. Alternatively, one pilot can be replaced with a tinned ECC conductor semi-conductive rubber covered)

Internal sheath:

Poly-chloroprene thermosetting compound type RS 6 comply to SANS 1411-3

Reinforcing braid:

An open nylon braid. Minimum 16 of nylon strings

Outer sheath:

Poly-chloroprene thermosetting compound type RS 6 comply to SANS 1411-3. Inner and outer sheath are bonded to provide proper torsional protection, black

parameter

Physical Properties

Electrical Properties

Physical properties
Power cores
Conductor sizes (mm2)	25	35	50	70	95	120	150	185	240
Maximum wire diameter (mm)	0.41	0.41	0.41	0.51	0.51	0.51	0.51	0.51	0.51
Approximate conductor diameter (mm)	6.8	8.5	10.3	11.9	13.5	15.5	17.3	20.2	22.9
Maximum screen wire diameter (mm)	0.31	0.31	0.31	0.31	0.31	0.31	0.31	0.31	0.31
Braided screen filling factor (%)	60	60	60	60	60	60	60	60	60
Approximate summarized screen cross-section for power cores - weighing method (mm2)	28	29	32	35	39	41	44	47	50
Pilot cores
Conductor sizes (mm2)	10	10	10	16	16	16	25	25	25
Maximum wire diameter (mm)	0.41	0.41	0.41	0.41	0.41	0.41	0.41	0.41	0.41
Approximate conductor diameter (mm)	4.2	4.2	4.2	5.3	5.3	5.3	6.8	6.8	6.8
ECC size (if applicable) (mm2)	16	25	25	35	50	70	95	95	120
ECC maximum wire diameter (if applicable) (mm)	0.41	0.41	0.41	0.41	0.41	0.51	0.51	0.51	0.51
Lay ratio (maximum) (x PCD)	20	20	20	20	20	20	20	20	20
Approxiamte cable diameter * (mm)	50.1	51.7	55.3	59.8	64.6	68.8	73.1	77.8	83.1
Cable mass (approximate)
Type 66 (kg/m)	3.8	4.2	5.1	6.2	7.4	8.7	10.2	11.7	14.1
Type 66 ECC (kg/m)	3.9	4.4	5.5	6.4	7.6	8.9	10.5	11.9	14.5
Minimum bending radius (mm)	430	450	480	520	550	590	650	670	740
Maximum recommended tension (kN)	1.1	1.6	2.3	3.2	4.3	5.4	6.8	8.3	10.8
* Tolerance - +/- 5 of approximate value

Electrical properties
Power cores
Maximum cond. DC resistance at 200C (Ω/km)	0.795	0.565	0.393	0.277	0.210	0.164	0.132	0.108	0.0817
Maximum cond. DC resistance at 900C (Ω/km)	1.05	0.749	0.521	0.368	0.279	0.218	0.176	0.145	0.110
Reactance (Ω/km)	0.124	0.116	0.109	0.105	0.101	0.096	0.092	0.091	0.087
Impedance (Z) at 900C (Ω/km)	1.06	0.758	0.532	0.383	0.297	0.238	0.199	0.171	0.140
Minimum combined screen resistance at 230C (Ω/km)	1.6	1.2	0.8	0.7	0.6	0.6	0.6	0.6	0.6
Minimum combined screen & ECC resistance (Ω/km)	0.7	0.5	0.5	0.4	0.3	0.23	0.18	0.18	0.15
Sustained current rating at 300C ambient
Laid out straight (A)	105	130	160	195	230	260	300	340	400
Short circuit rating
Symmetrical fault current (kA for 1 sec)	3.1	4.3	6.1	8.5	11.6	14.6	18.3	23	29
Earth fault current - screens (kA for 1 sec)	1.6	2.1	3.1	3.5	4.1	4.1	4.1	4.1	4.1
Earth fault current - ECC + screens (kA for 1 sec)	3.6	5.0	5.0	7.5	9.0	11.5	14.0	14.0	17.0

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