Design
Conceptualising, Design & Engineering Of Substations/switch Yards
- Preparation of single line diagrams including protection, control and interface requirements.
- Layout drawings like equipment layouts, cable routing / power layout, Illumination system, grounding & lightning systems. power layout, Illumination system, grounding & lightning systems.
- Preparation of cable schedules, control schematics and inter connection diagrams, panel board schedules.
- CT/PT sizing calculation, Battery Sizing Calculation, Lighting Calculation and Distribution, Earthing Calculations, etc.
Engineering Services
System Study & Calculations
- System study of power distribution system
- Short circuit calculation, Fault level calculation & load flow analysis.
- Protection relay co-ordination studies of over current and earth fault relays and unit protection relay settings for motor, transformer and generator.
- The power system studies shall be carried out by the ETAP (Electrical Transient Analyzer Program).
Protection System Modernisation, Retrofit & Refurbishment
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Protection scheme & system like Differential, REF etc., upgradation & modernization.
- Revamping & retrofitting of switchgears, relays etc. for upgradation of the existing System with detail engineering.
Testing & Commissioning
Protection Relay Testing
- Electromechanical, static & numerical relay testing by secondary injection.
- Auxiliary relays operation pick up/drop off etc testing.
- Protection tripping testing by primary injection.
- All make relay testing i.e. English Electric, Alstom, Areva, Schneider, ABB,
- Siemens, Jyoti, Easun Reyrolle, Ashidha, GE etc.
Protection Scheme
- Restricted Earth Fault ( REF ) protection scheme for transformer.
- Transformer and generator differential protection scheme.
- Bus bar differential protection scheme.
- Pilot wire protection scheme for feeders.
- Synchronizing scheme for parallel operation of generator with Grid.
- Load Shedding Schemes for Grid islanding.
- Bus transfer scheme in independent, manual and auto.
Outdoor Substation
- Power transformer.
- Current transformer & Potential transformer.
- Circuit breaker, Lightning arrester, Isolators, pole insulators, etc.
- NGR, NGT, Earth pit & grid, cables, etc.
- Synchronizing scheme for parallel operation of generator with Grid.
- Control and relay panel, RTCC panel, Battery & Battery charger, etc.
Indoor Substation
- Distribution transformer.
- HT/LT switchgear, HT/LT cables, HT/LT motors.
- MCC, PCC, APFC, PDB, LDB, DCDB, Battery & Battery charger etc.
Electrical Energy Audit Services
- Formation of audit groups for specific areas and end use
- Visual inspection and data collection
- Observations on the general condition of the facility and equipment and quantification
- Identification/verification of energy consumption and other parameters by measurements
- Detailed calculations, analyses and assumptions
- Validation
- Potential energy saving opportunities
- Implementation
Consultancy Services
- Preparation of technical specifications for capital and non-capital items.
- Technical review of the proposals and placement of orders to prospective bidders jointly with the owner.
- Inspection of all capital items during stage and final after the manufacturing is completed.
- Identification/verification of energy consumption and other parameters by measurements
- Preparation of all drawings and technical documents required to be submitted to Chief Electrical Inspector approval for work commencement.
- Periodic visit with Vendor engineer at the site during installation work and also emergency visit for as and when required for trouble free execution.
