Medium Voltage Aerial Spacer Cable 20 Kv

Medium Voltage Aerial Spacer Cable 20 Kv

Medium Voltage Aerial Spacer Cable 20 Kv

Aerial Spacer Cable

Hongda

Al/XLPE/HDPE

ISO, CCC, CE, SGS

Aluminum

Round Wire

HDPE

XLPE

DC & AC

Low and Medium Voltage Cable

Construction, Overhead, Industrial

20kv, 30kv

En 50397-1

HDPE Compound

Hongda Cable

Steel & Wooden Drum

35 mm2 up to 240 mm2

Made in China

8544601200

Product Description

Medium Voltage Aerial Spacer Cables

In a Covered Aerial MV (Spacer Cable), spacers hold three MV phase conductors in close approximation.Spacers are suspended from a high-strength messenger wire. Covered Aerial cable itself is a single aluminum conductor protected by a layer of track-resistant polyethylene.

Application: Overhead single core cables with aluminum conductor and three layer of insulation, for overhead power transmission and distribution lines up to 33 Kv.
 

ENGINEERING  SPECIFICATIONS

Standard  EN 50397-1
Rated Voltage  12/20kv or 18/30 kv.
Conductor  stranded with compress concentric 1350-H19 wires .
Core  the conductor is insulated with a three  layer of extruded compound.
Operating temperature  90°c continues normal operation.
Features and Benefits The covering provides mechanical protection to the Conductor and it is resistant to weathering and chemicals. If the conductors accidentally come into contact due to high winds, falling tree limbs or other disturbances, the covering resists short circuits and the tendency for conductors to weld together.
Spacer cables characteristics and advantage Spacer cables provide a simple, reliable and cost-effective alternative And  also add value to the network, requiring very little maintenance during its entire Lifespan .
Under grounding conductors in these areas can be impractical and have significant economic implications.
Spacer cables are installed in areas where the need for an insulated overhead distribution network is desirable. These areas include, but  not limited to Hilly and mountainous areas.
Network reliability is vulnerable in these areas because of conductor clashing caused during high winds and storms and falling trees and branches
These areas are also more prone to lightning strikes
River Crossings.
Bushfire Danger Areas In the unlikely event that conductors clash, for whatever reason .

Advantages of spacer cables and comparing with medium voltage Aerial Bundled cables:
1 – Troubleshooting Aerial Bundled cables is difficult due to complexity and so is to repair whereas in spacer-cable network this issue has been addressed and solved
2 – The cost of constructing an aerial spacer cable network equals %60 of the network with Aerial Bundled cables
3 – Spacer cable distribution networks are simple and do not require special fittings, equipment or instructions in comparison with Aerial Bundled cables networks
4 – Acquiring splitting and attaching a transformer in medium voltage Aerial Bundled cables networks is extremely difficult whereas in spacer cable networks this issue has been alleviated and improved
5 – Spacer cables are lighter than Aerial Bundled cables and so they require less pole stability power
The advantages of spacer cables with Medium voltage  overhead covered conductors:
1 – All aluminum conductors can be utilized
2 – Extra lightning protection equipment are not needed
3 – Insulators are not needed
4 – Adjacency band limitations are decreased
5 – Multiple feeders can be fitted on one pole
6 – Can be passed through large spans

Space Aerial Cable STRUCTURE:

NUMBER OF CORE Single core
1. CONDUCTOR
  • Compact stranded hard drawn Aluminum wire
  • Conductor sizes 35 mm2 up to 240 mm2
2. CONDUCTOR SHIELD Semi conducting cross-linked polyethylene
3. INSULATION
  • Cross-linked polyethylene
  • Colour : Natural
4. SHEATH
  • Track resistant cross-linked polyethylene
  • Colour : Black
CLASSIFICATION
  • Normal operation 90 °C
  • Emergency overload conditions 130 °C
  • Short circuit conditions 250°C
  • Voltage rating 25 Kv.( Phase to Phase )

 

Space Aerial Cable Specifications:

Nominal Sectional Area Minimum Number of wire Diameter of Conductor (approx.) Thickness of Insulation Thickness of sheath Overall Diameter (approx.) Maximum DC. conductor resistance at 20°C Allowable ampacities in free air at 40°C ambient Cable weight (approx.) Standard packing
mm2 NO mm mm mm mm Ω / km A kg/km m
25 7 5.9 4.45 3.18 20.0 1.200 119 380 1000/D
35 7 6.95 4.45 3.18 21.0 0.868 149 490 1000/D
50 7 8.33 4.45 3.18 22.0 0.641 186 530 1000/D
70 18 9.73 4.45 3.18 24.5 0.443 229 630 1000/D
95 18 11.45 4.45 3.18 26.0 0.320 279 750 1000/D
120 18 12.95 4.45 3.18 27.0 0.253 321 850 1000/D
150 18 14.27 4.45 3.18 29.5 0.206 371 960 1000/D
185 34 15.98 4.45 3.18 31.0 0.164 429 1100 1000/D
240 34 18.47 4.45 3.18 33.5 0.125 520 1400 1000/D

Technical Specification:

Aerial Spacer Cable 20 kv
Crossectional Conductor Construction Conductor Dia. Thickness Approx. Overal dia Electical Resistance Calc. Breaking Force Air Flow Capacity at 20ºC Approx. Conductor Weight
Semi Conductor Insulation Jacket
Mm2 Nxmm mm mm mm mm mm Ω/km N A Kg/km
70 12×2.77 10 0.4 3.2 3.2 23.5 0.443 10.420 229 509
120 15×3.30 13.2 0.4 3.2 3.2 26.7 0.253 18.518 321 729
150 15×3.66 14.8 0.4 3.2 3.2 28.4 0.206 22.457 371 826
185 30×2.88 16.2 0.4 3.2 3.2 29.7 0.164 28.974 429 959
Aerial Spacer Cable 33 kv
70 12×2.77 10 0.4 4.5 3.2 26.0 0.443 10.420 227 630
120 15×3.30 13.2 0.4 4.5 3.2 29.3 0.253 18.518 318 850
150 15×3.66 14.8 0.4 4.5 3.2 30.8 0.206 22.457 367 960
185 30×2.88 16.2 0.4 4.5 3.2 32.2 0.164 28.974 425 1100

Please contact us for technical support with the right cable selection for your power distribution projects and to discuss your maintenance or project specific requirements. We provide tailored solutions for this cable range which include storage, cutting to length, and 2 days collection as standard.

Any problem and inquiry pls contact with Vivian Yuan.
 

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