HTLS Laboratory
High Temperature Low Sag (HTLS) conductors play a critical role in enhancing power transmission capacity without the need for new right-of-way. Ensuring their performance, safety, and long-term reliability is essential for modern power networks.
ERDA’s state-of-the-art HTLS Laboratory is equipped with advanced testing and evaluation facilities for HTLS conductors and associated hardware. The laboratory supports comprehensive testing to assess mechanical, electrical, thermal, and environmental performance, in line with national and international standards.
Electrical Research and Development Association
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Infrastructure
- 3 no. Bays with maximum 500kN UTM with load cell
- Crush Test Facility upto 3 MT and Impact Test Facility upto 10kg
- Axial Impact Test Facility (upto 250kN and 650kg Trolley)
- Aeolian Vibration and Sheave Testing Facility
- 200kN UTM Transformer equipped facility – 4000 A with 15 meter span
- Brittle Fracture Test Facility
- Salt Spray Chamber
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Products Evaluated
- Heat Resistant Aluminum Alloy with Invar Core (ZTACIR)
- Thermal Alloy Conductor Steel Reinforced (TACSR)
- Aluminum Conductor Steel Supported (ACSS)
- Aluminum Conductor Fibre Reinforced (ACFR)
- Aluminum Conductor Composite Core (ACCC)
- Gap Type Thermal Alloy Conductor Steel Reinforced (GTACSR)
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Tests on HTLS Conductor
- DC Resistance Test
- Ultimate Tensile Strength (UTS) at Room Temperature
- Ultimate Tensile Strength (UTS) at Elevated Temperature
- Stress-Strain Test
- High Temperature Endurance & Creep Test
- Radio Interference (RIV) & Corona Extinction Voltage
- Sheaves Test
- Radial Crush
- Axial Impact Tests
- Temperature Cycle Test
- Torsional Ductility
- Glass Transition Temperature (Tg)
- Galvanic Protection Barrier Layer Thickness
- Dye Penetrant Test
- Heat Exposure & Heat/Stress Test
- Flexural Strength Tests on Fresh sample
- Aeolian vibration test
- Coefficient of Linear Expansion
- Strand Brittle Fracture Test
- Resin content
- Fibre volume fraction
- Void content
- Heat resistance test on Aluminium Alloy strands or core
- Bending test on core
- Compression test on core
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Applicable Reference Standards
- ASTM B987:2020
- ASTM E228: 2017
- ASTM D7028: 2007
- ASTM D 5117: 2017
- ASTM D4475: 2021
- IEC 61089: 1991
- IEC 61395: 1998
- IEC 60468: 1974
- IS 398
- IEEE 738
Contact Person
Mr. Anil Suthar
Head of Section
anil.suthar@erda.org