Testing and Commissioning division of Voltech was established in 1995, and is engaged in rendering electrical services of turnkey solutions for all industrial projects, gained vast experience in the areas of transmission & distribution, Power utilities, power sector and other industries. Testing and commissioning division of Voltech technical competency to work upto - 765KV class. VoltechEngineers has a dedicated team of 2000 Qualified Engineers operating from 400 - 450 sites all over the globe. For over 2 decades, VOLTECH T&C division has offered our clients critical power system solutions.
Our skilled professionals deliver customized services to fit customer needs. We provide our customers with a professional of degreed and certified engineers who are trained and experienced in performing specification and testing in compliance with industry standards. Our field engineers meet the rigorous Indian standards of the Electrical Testing.
Our Field Engineers also undergo continuing education, to maintain the IS level, and keep abreast of the latest techniques/technologies in the testing field.
Our Organization gives safety training for all Engineers who work near energized or de energized electrical equipment. We are so serious about safety that we pioneered the integrity of testing and the necessity of standards and certifications that ensure the safety of our facility and our employees.
Our Engineers undergo Electrical Safety Training, along with how to select and use the proper Electrical Protective Equipment (EPE). They also participate in mandatory safety sessions, & safety meetings as & when conducted. We also provide not only training, but properly selected, rated and tested electrical protective equipment.
esidual Life Analysis for different electrical equipment's such as Power Transformer, Power Generator (Coal/Gas/Thermal/Hydro/Nuclear), HV Motors &Substation Equipment's.
Diagnostics of EHV / HV Cables upto 220KV
Harmonics studies and analysis
Electrical Safety Audit, Energy Audit for power plant & process plant.
Power Quality Audit including study of Transients
Relay setting calculations through ETAP 12.5
Lightning protection studies
Our diagnostics tools are fully automated and updated with latest technology.
Tan delta and capacitance measurement kits (DELTA 4100, M4100) of MEGGER and DOBLE manufacturers.
SFRA (FRAX 101, M5200) of MEGGER and DOBLE manufacturers.
Circuit Breaker Analyzer (Hisac 2406 & ULTIMA) of SCOPE.
Dew point Measurement (Alpha moisture, SAP Mini)
Thermal imager (FLIER B CAM)
Power quality/ Harmonics analyzer (Kyoritsu, Fluke)
Vibration measurement (X- Viber), Noise level Measurement (Lutron)
ON LINE Leakage Current Analyzer for LA's (SA 301)
Multi-functional Primary test system (CPC 100 – Omicron)
Software proficiency of our experts
ABB – PCM 600, PCM 2.3, CAP 540, CAP 501, CAP 505, REBCON, REBWIN, REBSYS
SIEMENS – DIGSI 4.84, BECKWITH – IPS COMM, GE – ENERVISTA
ALSTOM & SCHNEIDER – MICOM S1 STUDIO, SFT - SEPAM
REYROLLE – REYDISP, VAMP – VAMPSET, SEL - ACSELERATOR
Proficiency in handling test equipment
CMC 356 (OMICRON), F6150 (DOBLE), FREJA 300 & SWERKER 760 (Programma), ISA – DRTS 66, PULSUR (AVO)
Services provided by us in Various Sectors (Power Plants, Sub Stations, Oil& Gas Sectors, Transport Sectors, Process Industries, Hospitals, etc..) are as follows.
Regulating the protection zones according to the protection needs without disturbing the process from downstream to upstream
Sizing the Electrical Equipments
Relay – Co-ordination, Configuration, Testing & Commissioning for all types of relays.
Testing & Commissioning of Electrical equipments in any type of sectors.
Protection Co-ordination (Relay Co-ordination)
Dielectric Insulation Test
Thermal Imaging for capturing the week spots.
Operational Analysis of the Circuit Breaker
Assessing the Healthiness of the insulation
Third Harmonic Leakage current Measurement in Surge Arresters & Lightning Arresters.
Assisting the PG Test
Committing towards meeting the requirements for power up of Electrical Equipments.
Complete diagnosis over the trending of the report.
Electrical Safety Auditing with respect to Indian Electricity Act.
Enhancing the activities over the Annual Maintenance, Breakdown Maintenance & periodic maintenance over the Electrical Equipments.
Mitigate the penetrating of impure supply (Harmonics) to avoid the damage of insulations.
Installation & Refurbishment of Distribution Transformers & Power Transformer up to 100 MVA Transformers.
Performance Assessments of transformer
Power Quality Assessments
HVDC ±800 kV North-East Agra: VEPL - HVDC’s Milestone Achievement
ABB was selected by Power Grid Corporation of India Ltd. to deliver the world’s first multi-terminal UHVDC transmission link. The ±800 kV North-East Agra UHVDC link will have a record 6,000 MW converter capacity, including a 2,000 MW redundancy, and transmit clean power from India's northeast region to the city of Agra, a distance of 1,728 km.
One converter station will be in the north-eastern state of Assam, and a second in the state of West Bengal in eastern India. The other end of the DC line will terminate at Agra, where two bipolar converters will be connected in parallel. The 800 kV equipment yard at Agra will for the first time be placed indoors.
This is the second ABB-built multi-terminal HVDC link. In 1990-1992, a large-scale three terminal transmission link was constructed in North America called the Québec - New England HVDC Transmission - the first of its kind in the world.
At full capacity, the North-East Agra UHVDC link will be able to supply enough electricity to serve 90 million people based on average national consumption. Ultrahigh voltage minimizes transmission losses and improves grid efficiency
The Main Data of HVDC ±800 kV North-East Agra UHVDC link is as below:
It is a pleasure that HVDC Unit of Voltech Group has attained such an effective successful movement on the above project!! Hearty congratulations to the whole team!!!
HVDC division of Voltech Engineers private limited is strongly biased towards providing quality of testing and commissioning service to our customers for more than one decade in core field. Our engineers are competent and veteran in pre-commissioning, commissioning of all equipments likely Converter Stations, Quadrivalves, VBE and CCP in HVDC field. We are conversant with thyristors and controls. We have involved in the commissioning at various parts of the world.
Services Offered HVDC
Thyristor Converter and inverter valve towers/Valves
Valve and pole controls
Valve based electronics
Fiber optic systems
Station alarm systems
DRPS Dynamic Reverse Power Sharing Controls
Cooling Control & Equipmetns
Control for back up generators
Verifying healthiness of filters
Cooling plant commissioning
Transformer and Bay testing
Healthiness and functional checks of Thyristors.
POWERGRID has commissioned ±800kV HVDC Champa – Kurukshetra Transmission Line Pole-I and put to commercial operation w.e.f. 24th March 2017. This project will enable transfer of power from IPP generation projects coming up in Raigarh, Champa, and Raipur generation complex in Chhattisgarh to demand centres of Northern region viz. Haryana, Punjab, UP, Rajasthan and adjoining areas.
25 of our “VOLTECH ENGINEERS” are a part of this Pole 1 Commissioning project.
The above transmission system has been designed using State-of-the-art HVDC Technology and shall facilitate in meeting controlled power flow requirement, flexibility of operation as well as maintaining system parameters within limits through its control mechanism. The link augments the inter-regional capacity of Northern Region with Western Region, thereby facilitating economic dispatch of power and exchange of surplus power between Northern Region and Western Region, depending on the availability of generation and load demand in each region.
This project ensures 24*7 power supply, quality and access. The same has been tweeted by Mr.Piyush Goyal.
800kV Pole 3 has been successfully commissioned at HVDC ABB AB Alipurduar site consisting of 15 “Voltech Engineers”
Ensure High Reliability and availability of assets
Avoid Power Outage leading to loss of production
Extend lifetime of Existing assets
Optimize assets performance
Increase production output with existing assets
Increase return on assets
Reduce Life Cycle costs – Lowest Operation and maintenance costs
Optimize Capital expenditure
Electrical Safety Audit
Indian industries are growing at a faster pace and so the accidents. Industry managements invest & benchmark against global standards in areas like product development, energy conservation, Occupational Health, Environment etc., but is yet to adopt & achieve global bench marking in the area of Electrical Safety.
Thermography Audit (As Per Is/Cea Guidelines)
VOLTECH has Pan India Presence to carry out Thermography Audit Service. We are offering our clients excellent quality Thermography Services. Our skilled professionals offer this service of the following types of equipment like fuse boards, distribution boards, bus bar systems, control panels, high voltage and medium voltage systems and power line connections and insulators. Furthermore, this service can be customized as per the demands of our clients in various specifications. We are offering this service at nominal prices to our patrons.
To measure the total harmonics distortions THDV and THDI order of individual harmonics, power Factor at the incomer and as well as each outgoing feeders to give solutions for power factor Improvement and harmonics mitigations.
Methodology Of the Study
Site study & data collections
Field data monitoring &measurement
Report preparation with recommendation/ proposal for the harmonics filter implementation.
Supply, Installation, Testing & commissioning shall be carried out by use of
Voltech Training Center offers following courses:
Testing of Electrics (Testing of Transformers, CT, PT, Circuit Breaker & Motors)
Power system Protection (All Types of Relays)
Design Engineering (Electrical Power systems)
Design Engineering (Civil & Structural)
In plant Training – Electrical (Manufacturing of Transformers, Circuit Breaker, Control & Relay Panel and Battery Chargers)
Project work support in Electrical Power systems
Workshop on Electrical topics
Value Added Program for Electrical Engineering Students
Faculty Development Program Any topic pertaining to Power System suit to client's requirement
Transformer Installation / Servicing
Unloading of transformer
Visual inspection, Nitrogen checks & Dew point measurement
Absorbing the abnormalities in the shock Impact recorder
Placing the transformer in the plinth/Base of the construction
Locations and Site Preparation for Installation of a Power Transformer
Preparation of Oil during Installation of Transformer
Drying out Power Transformer using Streamlined Filter Machine
Gaskets and Gasket Joints
Fitting and Fixing Bushings of Transformer
Installation of Conservator Tank
Fittings of Silica Gel Breather
Installation of Explosion Vent
Fitting of Buchholz Relay
Installation of Temperature Indicator
Installation of Cooling Equipment
Fitting of off & On Load Tap Changer
Earthing of Transformer
Completion of Erection work for Installation of Power Transformer
Testing activates for before installation and After installation
Increasing the oil dialectical strength by oil filtration.
Replacement of bushing up to 400KV Class
Arresting the oil leakage by replacing the gaskets
Improve the efficacy of the earthing the transformer
Minor Moisture removal from core & Coil assembly
In Factory Premises
Reconditioning of transformer upto 220 KV class
Rewinding of Transformer
Moisture removal from core & Coil assembly
The performance of equipment is analyzed through various test under condition assessment and review of maintenance
( break down maintenance, scheduled maintenance & condition monitoring) to determine its condition and predict when it will need attention.
Main Steps Involved In R&M And Life Extension Of Equipment
The main steps involved in R&M and Life Extension of equipment are as under
Study of past performance data and review of O&M records e.g. loading conditions, number of tripping, failures, repairs/replacements etc.
Condition Assessment of the equipment to know the present health e.g. efficiency and other operating parameters.
Assessment of remaining life of various components of the plant by conducting Residual Life Assessment (RLA) studies.
Identification of components requiring replacements, repairs, up gradations/retrofitting.
Implementation of R&M and Life Extension Program on equipment to equipment basis.
Replacement of equipment with 'latest state of art' making new provisions as a modernization process.
Voltech is a lead role player in providing Design engineering services to major EPC solution providers and independent project builders in the field of Electrical, Power System Studies, Instrumentation, Civil and Structural for power & process plants and various industrial utility requirements.
Up 765kV T&D Gas Insulated and Air Insulated Substations.
Up to 400kV Industrial Substations..
Fossil fuel, Bio Mass, Bio Gas, Natural Gas, Water and Renewable Energy Based Power Plants..
Water Treatment Plants (RWTP, STP and ETP)..
Process Plants (Steel, Cement, Paper, Chemical, Oil & Gas)..
Food Process Industries..
Design Concept and Philosophy.
Pre & Post bid engineering
Indoor & Outdoor illumination
Short circuit force & cantilever strength calculation
Conductor sizing calculations
Erection Key Diagram
Sag Tension Calculation
Panel layout for AC & DC
Control Room Lay Out & Switchgear Arrangements
Cable Tray Route, layout Engineering
Protection Metering Single Line Diagram
Station/ Auxiliary Transformer Sizing Calculation
Relay Setting Calculations
CT & VT Sizing Calculation
Battery Sizing Calculation
Single Line Diagram for LV /AC/ DC Distribution System
Numerical Relays of ABB, AREV A & SIEMENS
400/220kV Transmission Line & Equipment protection
Bus Differential protection
Cable feeder protection
Cable + Transformer protection
Isolator Interloclting Scheme
Protection Logic Diagrams and Trip matrix
Panel GA, Lay Out and BOM
Load Flow Analysis.
Short Circuit Analysis.
Motor Accelerations and System Dynamics.
Harming Analysis and Mitigations.
Protection Setting and coordination.
Design base report
Equipment Sizing like Trafo, Capacitor, Breaker and etc,
Inputs providing to other engineering disciplines.
Overall/Area wise Cable Tray/Trench Routing.
Power &Control Cable Sizing and Schedule
Earthing Calculation &Layout based on local and international standards.
Lightning Calculation & Layout based on local and international standards.
Earthing/Lightning Installation Standard Drawings.
Software & Manual lighting design Calculation & Layout.
Material take offs (MTOs) & review vendor drawings.
Instrument JB grouping and Cable Schedule.
I/O list and Control System Configuration Diagram.
Design Basis Report & Specification
Soil Investigation - Specification & GA Drawing
Switchyard Foundation Layout
Tower & Girder Structure & Fdn.
Lightning arrester (LA) Support Structure & Fdn.
Current Transformer(CT) Support Structure & Fdn.
Capacitance Voltage Transformer(CVT) Support Structure & Fdn.
Potential Transformer (PT) Support Structure & Fdn.
Bus Post Insulator(BPI) Support Structure & Fdn.
Isolator / Disconnector Support Structure & Fdn.
Wave Trap (WT) Support Structure & Fdn.
Circuit Breaker (CB) Fdn.
Lightning cum Lighting mast (LCLM) Support Structure & Fdn.
Burnt Oil Pit
Septic Tank & Soak Pit
Capacitor bank & AC Kiosk Fdns.
Oil collection tank Fdn.
Control Room Building
Bar Bending Schedule (BBS) for all Civil Works
Road & Drainage layout & details
Boundary wall & Retaining wall
Overhead water tank
Firewall design and Drawings
Major Projects of T&C
Major Projects of Design Engineering
Testing & Commissioning work at various sites of 765/400/220kV AIS & GIS (BGCL) SS03 & SS04 through M/s. Siemens Limited- value of 26 Lakhs.
Testing & commissioning work through M/s. LARSEN & TOUBRO LIMITED - value of 5 Lakhs.
Testing & Commissioning of SVC Equipments under SVC package at Ludhiana through M/s. Siemens Limited- value of 8 Lakhs.
Testing & Commissioning at BARC Tarapur through M/s. LARSEN & TOUBRO LIMITED - value of 2 Lakhs.
Testing of electrical equipment through M/s. JBS Enterprises Pvt. Ltd., - value of 50 Thousands.
ICD1- Western Region has bagged Order value of 5.50 lakhs from Bajaj Larsen & Tubro Ltd.Electricals Ltd.
ICD1- Western Region has bagged Order value of 4.1 lakhs from Larsen & Tubro Ltd.
ICD1- Northern Region has bagged Order value of 8 Lakhs from Siemens
ICD1- Western Region has bagged Order value of 3.50 lakhs from Konstelec Engineers Pvt Ltd.
Testing and Commissioning of Electrical Equipments through M/s. Larsen & Toubro Limited, Construction - value of 3.1 Lakhs.
Testing and Commissioning of 220/33kV pooling substation for wind farm at Sadla village through M/s.KSA Power Infra Pvt. Ltd-value of 7 Lakhs
SOIL RESISTIVITY TEST – RAMAGUNDAM through M/s. LARSEN & TOUBRO LIMITED-value of 32 Thousands
Testing & commissioning of 11/0.44 Kv, 750 KVA ONAN transformer along with NCT & WTICT through Sri Mayur Biscuit Co. (P) Ltd- value of 1.20Lakhs.
ICD1- Southern Region has bagged Order value of 1.50 Lakhs from ABB India Ltd
ICD1- Southern Region has bagged Order value of 7 Lakhs from KSA
ICD1- Eastern Region has bagged Order value of 3.1 Lakhs from Transient Electricals (P) Ltd.
ICD1- Eastern Region has bagged Order value of 3.1 Lakhs from Aditya Birla
SWONG: Solar Water Oil & Gas
Stator slot coupling PD measurement/ Co RSO testing & Tandelta /PF/Capacitance Testing through M/s. Siemens Limited- value of 12 Lakhs.
Operation and Maintenance work at 1.2MW solar PV plant at Tropical Flavours Pvt Ltd. Through M/s. Bosch Limited-value of 10.25Lakhs.
Operation and Maintenance work at 1.65 MW solar plant including seasonal tilt through M/s. Bosch Limited-value of 17.5Lakhs
ICD1- Solar has bagged Order value of Rs.10,20,000 from Bosch Limited
ICD1- Solar has bagged Order value of Rs.8,52,000 from Bosch Limited
ICD1- Solar has bagged Order value of Rs.6,14,434 from Mytrah Energy (India) Pvt Ltd.
ICD1- Solar has bagged Order value of Rs.5,40,000 from Aditya Birla Solar Limited
HVCP design as per input received for 150kV switch yard 5 Bays, 5Nos. of Marshalling Kiosk design, Variation claim for Increased quantities of Tower and Gantries designs through M/s. LARSEN & TOUBRO LIMITED - value of 4.60 Lakhs.
System study, Power distribution design, Electrical equipment Engineering and drawing, cabling design and detailed engineering through M/s. Euroasiatic-value of 40.50 USD
ICD1- Design has bagged Order value of Rs.4,60,000 from Larsen & Toubro Limited
Erection, Dismantling and oil filtration of 2 Nos of 250 MVA Transformer and 1 No. 50 MVAR reactor at Tenughat through M/s.Sterling and Wilson Private Ltd-value of 24 Lakhs.
Supply, installation and commissioning of Electrical passive filter and active filter at NH hospital Jaipur through M/s. Narayana Multispeciality Hospital-value of 11 Lakhs
ICD1- ATT has bagged Order value of Rs.3,90,000 from M/s.Adarshini Power Limited
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