1HUNGER_RU_author_Session 1_Block 5

Barcelona 12-15 May 2003

Steel Supports of the Bent Profile for Distribution Power Lines of 6-110 kV Voltages.

Yury R. HUNGER A. A. Zevin

Russia

2HUNGER_RU_author_Session 1_Block 5

Barcelona 12-15 May 2003

Tower and pole supportsAdvantages Disadvantages

Tower

1. Low weight.2. Easy to produce.3. Easy to climb.4. No air-tightness.

1. Big sections.2. Four foundations.3. Hard to erect.4. Hart to transport.

Pole1. Narrow base.2. One foundation.3. Dynamic flexibility.4. Easy to transport.5. Easy to erect.

1. High weight.2. Air-tightness.3. Unclimbable.4. Hard to produce.

3HUNGER_RU_author_Session 1_Block 5

Barcelona 12-15 May 2003

The support for OHL 6-10 kVItem

(per km)Concrete

our Difference (%)

Span (m) 50 100 200

Number of supports 20 10 200

Supports’ weight (t) 23 3.2 720

Foundations’ weight (t) 8.8 2.9 300

Total weight (t) 31.8 6.1 520

Ground work volume (m3)

24 6 400

Railroad transportation (number of cars)

0.6 0.22

270

Trailer transportation (number of routes)

5 0.5 1000

4HUNGER_RU_author_Session 1_Block 5

Barcelona 12-15 May 2003

The support for OHL 35-110 kVItem

(per km)tower our Differ

ence(%)

Number of supports 3.3 3.6 -10

Supports’ weight (t) 8.6 4.8 180

Foundations’ weight (t) 32 2.2 1450

Total weight (t) 40.6 7.0 580

Ground work volume (m3)

13.3 3.3 400

Railroad transportation (number of cars)

1.0 0.6 170

Trailer transportation (number of routes)

10 1.2 830

5HUNGER_RU_author_Session 1_Block 5

Barcelona 12-15 May 2003

Conclusions

The new types of supports for OHL of 6-110 kV:- are designed;- combine the advantages of tower and pole

supports;- have better characteristics than all existing

supports.