Clientele - Protection System Relay and Scheme Testing

Krishak Bharati Co-Op Ltd, Fertiliser Plant at Hazira - Surat

A Fertiliser plant having 2x20MVA 66kV grid power and 2x15MW CPP

Approx quantity of relays 2250 nos carried out in 35 days shutdown

Krishak Bharati Co-Op Ltd – HAEP at Hazira – Surat

A Heavy Water plant having 2x15MVA 66kV grid power

Approx quantity of relays 1250 nos carried out in 15 days shutdown

Indo-Gulf Corporation Ltd, Jagdishpur

A Fertiliser plant having 2x20MVA 132kV grid power and 2x28MW CPP

Approx quantity of relays 1750 nos carried out in 18 days shutdown

Gujarat Heavy Chemicals Ltd, Sutrapada

A Caustic Soda plant having 1x5MVA 66kV grid power and 2x11MW CPP

Approx quantity of relays 950 nos carried out in 10 days shutdown

Gujarat Narmada Fertiliser Valley Co. Ltd., Bharuch

A Fertiliser plant having 2x50MVA 132 kV grid power and 2x25MW CPP.

Approx quantity of relays 2075 nos carried out in 25 days shutdown

Gujarat State Fertiliser Co. Ltd., Vadodara

A Fertiliser plant having 2x50MVA 132 kV grid power and 2x15MW + 1x30MW CPP.

Approx quantity of relays 1800 nos but carried out approx. 900 relays during split shutdown

Elme Petro-Chemicals Company Limited – Port Harcourt, Nigeria

A petrochemical plant having 4x30MW CPP. The relays in the plant are of seven different makes which are electromechanical and static type and initial phase of work of assessment has been done so that during plant shutdown no difficulty shall be faced for testing of relays.

Birla Cellulosic, Kosamba (A Unit Of Grasim Industries Ltd)

A Viscose plant having 1x2.5MVA 22kV grid power and 2x15MW CPP.

On line testing of 1485 nos. of plant relays carried out in 45 days without shutdown and testing of 3 nos. of generator numerical protection relays REM543 in phase manner.

Zuari Industries Ltd, Goa

A Fertiliser plant having total 632 nos. of relays of four different makes in combination of electro- mechanical, static and numerical protection relays.

Chambal Fertilizers and Chemicals Ltd, Kota

A Fertiliser plant having total 410 nos. of relays in Gadepan-I and 534 nos. of relays in Gadepan-II in combination of electro- mechanical, static and numerical protection relays.

Grasim Industries Limited - Chemical Division, Vilayat

Sensitivity and stability check up for Differential and REF protection schemes installed for 2 nos. of 33/6.6kV power transformers and for REF protection schemes installed for 9 nos. of 33/0.433kV distribution transformers.

Aarti Industries Limited, Vapi

Sensitivity and stability check up for Differential protection scheme installed for 8MW of turbo generator in CPP and testing of 92 nos. of protective relays of various application.

Gujarat Alkalies & Chemicals Ltd, Vadodara

A Caustic Soda and Chemical plant having 2x20MVA 66kV grid power.

Approx quantity of relays 850 nos carried out in 15 days shutdown

GAIL (India) Ltd, Pata

A Petroleum and Chemical plant having 2x20MVA 66kV grid power and 2x15MW CPP.

Approx quantity of relays 3250 nos carried out in 30 days shutdown

GAIL (India) Ltd, Vadodara

A LPG recovery plant having 2x20MVA 66kV grid power and 2x5MW CPP.

Approx quantity of relays 650 nos carried out in 15 days shutdown

GAIL (India) Ltd, Guna

A LPG recovery and Petroleum plant having 2x20MVA 132 kV grid power and 2x16MW CPP.

Approx quantity of relays 1150 nos carried out in 25 days shutdown

Birla Copper, Dahej (A Unit Of Hindalco Industries Ltd)

A Copper Smelter plant having 220kV grid power and 135MW CPP.

Approx quantity of relays 375 nos carried out in phase manner during plant shutdown.

Indian Farmers Fertilisers Co-Operative Ltd., Aonla Unit

A Fertiliser plant having 2x25MVA 132 kV grid power and 2x28MW CPP.

Approx quantity of relays 1750 nos carried out in 25 days shutdown

Indian Farmers Fertilisers Co-Operative Ltd., Phulpur Unit

A Fertiliser plant having 2x25MVA 132 kV grid power and 1x15MW + 1x18MW CPP.

Approx quantity of relays 2750 nos carried out in two separate shutdown 0f 20 days each

Indian Farmers Fertilisers Co-Operative Ltd, Kalol Unit

A Fertiliser plant having 3x12.5MVA 66kV grid power

Approx quantity of relays 950 nos carried out in 12 days shutdown

Indian Farmers Fertilisers Co-Operative Ltd, Paradeep Unit

A Fertiliser plant (132kV / 33 kV, 2x75MVA switchyard and 2x60MW CPP. The relay testing and primary injection testing carried out for entire plant electrical power distribution system at 33kV/11kV/6.6kV/440v carried in 100 working days.

Indian Farmers Fertilisers Co-Operative Ltd, Kandla Unit

A Fertiliser plant (66kV / 3.3 kV, 4x5MVA switchyard

Approx quantity of relays 650 nos

Indian Rayon Industries Ltd, Veraval

A Rayon and important Viscose plant having 2x2.5MVA 11kV Grid Power, 8x2.25MW DG sets and 1x15MW + 1x20MW CPP

Approx quantity of relays 1490 nos carried out on line in 35 days time.

Nirma Ltd – Bhavnagar

A Caustic Soda plant having 66kV, 15MVA Power Transformer and CPP having power generation capacity with 2x16.32MW TOYO DENKI TG sets and 1 no. 6.5MW BHEL make TG set

Approx quantity of relays 1100 nos. and various scheme testing carried out in 10 days shutdown period.

Grasim Industries Ltd, Nagda

A Viscose plant having 2x5MVA 33kV grid power and 2x15MW+1x30MW 1X18MWCPP Approx quantity of relays 2650 nos carried out in 25 days shutdown

Grasim Industries Ltd, Rajshree Cement, Malkhed

A Cement plant having 3x20MW STG and 132kV grid power and allied Electrical System. Approx quantity of relays 650 nos carried out in shutdown including testing of 3 nos. of numerical generator protection relays Micom P343 and REM543.

Tata Chemicals Ltd, Babrala

A Fertiliser plant having no grid power and 2x25MW CPP

Approx quantity of relays 1675 nos carried out in 22 days shutdown

Tata Chemicals Ltd, Haldia

A Fertiliser plant having no grid power and 2x12.5MW CPP

Approx quantity of relays 475 nos carried out in 12 days shutdown

Oswal Chemicals And Fertilizers Ltd, Shahjahanpur now KRIBHCO Shyam Fertilizers Ltd

A Fertiliser plant having no grid power and 2x28MW CPP

Approx quantity of relays 1450 nos carried out in 20 days shutdown

Essar Power Ltd, Hazira

A power plant having 4x100MW generation and allied distribution system

Approx quantity of relays 1100 nos carried out in two to three shutdown of 10/12 days

Oil and Natural Gas Corporation Ltd, Gandhar

A Gas plant having 2x20MVA 66kV grid power and 2x18MW CPP

Approx quantity of relays 1850 nos carried out in two separate shutdown of 20days each

Reliance Industries Ltd, Hazira

A Petrochemical plant having 2x50MVA 220/33KV Outdoor Switchyard and 7X30MW Captive Power Plants. The Distribution Network System is at 33KV, 6.6KV and 433V and the number of plant substations are approximately 33. The total no of relays shall be 8500 including Distance, Generator, Motor and Feeder Protections. The job was carried out on AMC basis with an emergency call to attend within 2/3 days time and carried out entire work successfully

Torrent Gujarat Biotech Ltd, Vadodara

A Pharma plant having 2x15MVA 66/6.6kV Grid Power and Captive Power Generation of 6x1000kw DG sets and Allied Distribution System

Approx quantity of relays 850 nos carried out on line in 10/12 days

Ambuja Cement Ltd, Unit Rabriyawas, Jaitaran

A Cement Plant having 2x15MVA 132/11kV Grid Power and Captive power Generation of 1x15MW TG set and Allied Distribution System

Approx quantity of relays 850 nos carried out during shutdown of 12/15 days including testing of 2 nos. numerical generator protection relays Micom P343.

Enercon India Ltd / Larsen & Toubro Ltd – ECC, Ahmedabad

132kV / 33 kV, 2x75MVA switchyard at Jaisalmer. Protective relays and Primary Injection Testing includes Schemes.

Suzlon Energy Ltd / Larsen & Toubro Ltd – ECC, Ahmedabad

220kV / 33kV, 2x75MVA switchyard at Jaisalmer Protective relays and Primary Injection Testing includes Schemes.

Enercon India Ltd / Joyti Engineers and Contractors Pvt. Ltd, Gondal

220kV / 33kV, 2x100 MVA Switchyard at Somania. Protective relays and Primary Injection Testing includes Schemes.

Bharat Heavy Electricals Ltd, Hyderabad

IOCL Gujarat Refinery (30MW CPP), OIL AND NATURAL GAS CORPORATION LTD- Hazira (15MW CPP), Nirma – Bhavnagar (6MW CPP), GHCL – Veraval (6 MW CPP)

DLF Ltd, New Delhi

Ambuja Cement (15MW CPP), Nagpur Alloy & Casting (2x4MW, CPP), Indian Rayon (16 MW CPP)

Gujarat Narmada Valley Fertilizers Co. Ltd, Bharuch / Jyoti Ltd

The complete Electrical Power Distribution and Auxiliary system at 11kV / 3.3kV / 433V HT panel LT panel MCC Power Transformer and Generator control and relay panel for 2x25MW CPP

Alembic Ltd, – Vadodara

The complete Electrical Power Distribution and Auxiliary system at 11kV / 433V HT panel LT panel MCC and Generator control and relay panel for 3x4.25MW CPP

Alstom Projects India Ltd, Vadodara

Carrying out Testing of Protective relays of CPP including Generator Protection Relays, Primary Injection testing of CTs and unit protection scheme validation during overhauling carried out by Alstom at various Captive Power Plant sites in India listed as under

  • Indian Farmers Fertilisers Co-operative Ltd, Paradeep
  • Indian Farmers Fertilisers Co-operative Ltd, Aonla
  • Indraprastha Gas Power Co. Ltd, Delhi
  • Indo Gulf Fertilisers Ltd, Jagdishpur
  • Numaligarh Refinery Ltd, Numaligarh
  • Tata Chemicals Ltd, Babrala

Thermax Ltd, Pune

Carrying out Testing of Protective relays of CPP including Generator Protection Relays, Primary Injection testing of CTs and unit protection scheme validation during overhauling carried out by Thermax at various Captive Power Plant sites in India listed as under

  • Saurashtra Cement, Porbandar
  • J. K. White Cement, Gotan
  • Urjankur Shirol – Kolhapur
  • Hindustan Zinc Ltd., Rajasthan
  • SKS Ispat and Power Ltd., Raipur
  • J. K. Cement Works, Nimbahera


Elcon Engineers Pvt. Ltd.

501-2-3, Onyx Business Centre, Akshar Chowk, O. P. Road, Vadodara - 390020, Gujarat, India.

Phone: +91 265 2985152, +91 265 2989152 E-mail: eepl@elconengineers.com

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