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Hot Line Training Centre (HLTC) located at Bangalore, is the oldest Institute under National Power Training Institute (NPTI). It is the only one of its kind in South Asia. Established in 1958, training at HLTC enables trained personnel to attend to maintenance works on Transmission Lines and Switch Yards without power interruption. Since its inception HLTC had trained more than 3000 personnel including participants from Sri Lanka and Afghanistan in the field of Live Line Maintenance Techniques.

HLTC imparts training on Live Line Maintenance of EHV Lines & Switch Yards, Punctured Insulator Detection, Live Line Insulator Washing etc. All the Power utilities of India and abroad can make use of these training facilities.

HLTC is located in Bangalore near Somanahalli Gate at 26th KM on Bangalore- Kanakapura Road in about 57-acre campus with office building, Tools Hanger, Training Yard consisting of Transmission Lines from 11kV to 400kV and 220kV Switch Yard, hostel, Guest house, Canteen and Residential Colony. The Institute is headed by a Dy. Director.

Supply of Power without interruption to the consumer, Transmission Lines and Switch Yards must be Maintained without taking outage. Hence the need of well trained Personnel to undertake Maintenance on Live Transmission Lines and Switch Yards.

HLTC was set up under CWPC in the year 1958 - one unit each at Peenya, Bangalore and Ganguwal, Punjab. HLTC was brought under CEA in the year 1974. Inauguration of the HLTC at its Somanahalli complex was held in the year 2000. With effect from 1st April 2002, HLTC was merged with National Power Training Institute (NPTI) (An Apex body for Training) which is ISO 9001:2000 Organisation under Ministry of Power, Government of India.

Scope of Training

Live Line Maintenance Technique (LLMT) using Hot Stick Method (HSM) up to 132 kV was extended up to 220kV in the Year 1974. Bare Hand Method (BHM) of training on 400 kV was introduced in the Year 1997.

Training Courses

  • Live Line Maintenance Techniques (LLMT) using Hot Stick Method (HSM) up to 220kV
  • Live Line Maintenance Techniques (LLMT) using Bare Hand Method (BHM) up to 400kV
  • Switch Yard Maintenance
  • Live Line Insulator Washing (Onsite Course)
  • Live Line Testing of Punctured Insulator Detection (PID)
  • Capsule Course for Executives on Hot Line Activities
  • Cold Line Maintenance Training up to 400kV

The training programmes include First Aid and aspects of Fire Fighting. Technical visits to Insulator manufacturing unit and testing facility for Insulators, Towers, and Cables are also arranged.

Participants: Engineers, Supervisors, Technicians, Linemen and Helpers from various State/Central electricity utilities, Power Companies / Corporations, and Private Electrical Contractors from India and abroad.


HLTC has well trained and experienced Field Engineers/Officers to impart training. Occasionally personnel from different Power Utilities are invited as guest faculty to share their experience.

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