10kV, 35kV Insulated Overhead Cable

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Standards
This 10kV insulated overhead cable strictly conforms to GB/T14049-2008 standard, namely aerial insulated cables with rated voltages of 10kV and 35kV. The 35kV type is produced according to the enterprise standard.

Working Conditions
1. The rated voltage is 10kV or 35kV.
2. The maximum operating temperature for conductor depends on the maximum working temperature of insulation, and the specific values for XLPE insulated type and HDPE insulated type are 90℃ and 75℃, respectively.
3. The maximum cable temperatures when short circuit occurs are 250℃ for XLPE insulated type, and 150℃ for HDPE insulated type. Meanwhile, the short circuit should not last for more than 5 seconds.
4. The ambient temperature when laying should not be lower than -20℃.
5. The bending radius should be bigger than the diameter of cylinder used in bending test.

Name Code
JK: Aerial cable
LH: Aluminum alloy
TR: Soft copper conductor
L: Aluminum
B: Natural color insulation
Q: Light and thin insulation

Type Descriptions

Model	Product Name	Laying Attentions
JKYJ	Cu core XLPE insulated aerial cable	They fit for overhead fixed laying, and a certain distance between cables and trees should be taken into account.
JKTRYJ	Soft cu core XLPE insulated aerial cable
JKLYJ	Al core XLPE insulated aerial cable
JKLHYJ	Aluminum alloy core XLPE insulated aerial cable
JKY	Cu core PE insulated aerial cable
JKTRY	Soft cu core PE insulated aerial cable
JKLY	Al core PE insulated aerial cable
JKLHY	Aluminum alloy core PE insulated aerial cable
JKLYJ/B	Al core natural color XLPE insulated aerial cable
JKLHYJ/B	Aluminum alloy core natural color XLPE insulated aerial cable
JKLYJ/Q	Al core light type XLPE insulated aerial cable	These products are suitable for overhead fixed laying, and a certain distance between cables and trees should be kept when designing cable stand. During working, the contact between cable and tree should be limited to a short time.
JKLHYJ/Q	Aluminum alloy core light type XLPE insulated aerial cable
JKLY/Q	Al core light type PE insulated aerial cable
JKLHY/Q	Aluminum alloy core light type PE insulated aerial cable

Specifications

Model	Core Number	Nominal Cross Section (mm2)
Model	Core Number	10kV	35kV
JKYJ JKTRYJ JKLYJ JKLHYJ	1	10-300	50-300
	3	25-300
	3 K(A) or 3 K(B)	25-300
	3 K(A) or 3 K(B)	K: 25-120
JKY JKTRY JKLY JKLHY JKLYJ/Q JKLHYJ/Q JKLY/Q JKLHY/Q	1	10-300
JKLYJ/B JKLHYJ/B	3	25-300
	3 K(A) or 3 K(B)	25-300
	3 K(A) or 3 K(B)	K: 25-120

Note:
1. K stands for load carrying stranded conductor, and any specified section in the table above can be selected to match with relevant conductor based on the requirements of engineering design. If the span of pole is so big that extra bearing wire is needed, this wire is not included in the cable structure.
2. A represents steel load carrying stranded wire, and B is aluminum alloy load carrying stranded wire.

Technical Parameters of Conductor

Nominal Section (mm2)	Resistance at 20℃ (≤Ω/km)				Breaking Strength (≥N)
Nominal Section (mm2)	Hard Cu Core	Soft Cu Core	Al Core	Aluminum Alloy Core	Hard Cu Core	Al Core	Aluminum Alloy Core
10 16 25 35 50 70 95 120 150 185 240 300 400	0.749 0.540 0.399 0.276 0.199 0.158 0.128 0.1021 0.0777 0.0619 0.0484	1.830 1.150 0.727 0.524 0.387 0.268 0.268 0.153	3.080 1.910 1.200 0.868 0.641 0.443 0.320 0.253 0.206 0.164 0.125 0.100 0.0778	1.393 1.007 0.744 0.514 0.371 0.294 0.239 0.190 0.145 0.11 6 0.0904	8465 11731 16502 23461 31759 39911 49505 61846 79832 99788 133040	3762 5177 7011 10354 13727 17339 21033 26732 34679 43349 55707	6284 8800 12569 17596 23880 30164 37706 46503 60329 75411 10548

Note: The light and thin insulated air cable is without inner semi-conducting shielding layer.

Technical Parameters of Load Carrying Stranded Wire

Cross Section (mm2)	Breaking Strength of Steel Type (≥N)	Breaking Strength of Aluminum Alloy Type (≥N)
25 35 50 70 95 120	30000 42000 56550 81150 110150	6284 8800 12569 17596 23880 30164

Qualifications

Item	Unit	Data		Test Method
Item	Unit	10kV	35kV	Test Method
Resistance of Conductor at 20℃	Ω/km	GB14049-1993 (see the table above)		GB3048.4
Insulation Resistivity (without external shield)	MΩ·km	≥1500 (≥1000 for light type)	≥4100	GB3048.5
AC Voltage Test (1minute)	kV	18 (2 for light type)	63	GB3048.8
Partial Discharge Test (with external shield)	pC	≤20		GB3048.12
Dimensions and Breaking Strength Test of Conductor		GB14049-1993 (see the table above)		GB4909.2 and GB2951.2
Hot Set Test	%	≤ 175	≤175	GB2951.18
Bending Test	mm	Single core: 20±5% (D d) Multi-core: 15±5% (D d)	20±5% (D d)	GB2951.23
Impulse Voltage Test	kV	93.8 (75 for light type)	250	GB3048.8
Tracking Resistant Test of Insulation (without external shield)	A	≤0.5	≤0.5	GB3048.7
Mechanical Property Tests of Insulation before and after Aging		GB14049-1993	GB14049-1993	GB2951
Adhesive Strength (slip-off) Test of Insulation	N	≥180	≥180	GB14049-1993
Weather-proof Test of Insulation (without external shield)			GB14049-1993
Peeling Test of Semi-Conducting Layer (with external shield)	N	8-40		GB14049-1993
Rub-Resistant Test of Printed Mark				GB6995.3

Application
This insulated overhead cable is a new product applied to overhead power transmission line, and is also the preferred choice for building or upgrading power grid with rated voltage of 10kV or 35kV. Meanwhile, it can ensure the safety of power line, and the soft copper core type is suitable for downlead of transformer.

Requirements for Delivery
For this overhead cable, there should be continuous marks like model, specification, rated voltage, manufacturer name and other information which are clear and rub-resistant. The total delivery length, and length and quantity of short cable should be decided through consultation when signing the contract.

Related Names
Copper Core Aerial Cable Manufacturer | Medium Voltage Telecommunication System | Alloy Core Electrical Cable

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