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We provide high quality and accurate electrical engineering services which are customized to meet individual project requirements. The key to our success is our ability to comply with the expectations and demand of our clients in an economical and timely manner. We specialize in providing electrical drafting and detailing services for Residential Buildings, Commercial Buildings, Substations, Electrical rooms, Hospitals, Educational Buildings and Industrial Buildings, Monumental and amusement Centers.

We provide electrical drafting and electrical design services in Electrical Engineering that are cost effective, timely and responsive to client needs. We follow National Building Code of India 2005, NEC India and USA, ECBC 2007,BIS and IEC standards for designing Electrical Systems.

Our electrical design, drafting and detailing services include:

  • Design and Drafting of Lighting System
  • Design and Drafting of Power System
  • Design and Drafting of Power Distribution System
  • Design and Drafting of Fire Alarm System

We throughly work as per requirment of various codal provisions :

As per ECBC 2007 which is mandatory for commercial buildings or building complexes that have a connected load of 500 kW or greater or a contract demand of 600 kVA or greater. The code is also applicable to all buildings with a conditioned floor area of 1,000 m2 (10,000 ft2) or greater. The code is recommended for all other buildings.

The provisions of this code apply to:

  • Building envelopes, except for unconditioned storage spaces or warehouses,
  • Mechanical systems and equipment, including heating, ventilating, and air   conditioning,
  • Service hot water heating,
  • Interior and exterior lighting, and
  • Electrical power and motors.

Lighting systems and equipment shall comply with the mandatory provisions of § 7.2 and the prescriptive criteria of § 7.3 and § 7.4. The lighting requirements in this section shall apply to:

  • Interior spaces of buildings,
  • Exterior building features, including facades, illuminated roofs, architectural  features, entrances, exits, loading docks, and illuminated canopies, and,
  • Exterior building grounds lighting that is provided through the building’s electrical service.

7.2  Mandatory Requirements

7.2.1 Lighting Control

7.2.1.1 Automatic Lighting Shutoff

Interior lighting systems in buildings larger than 500 Sq. m (5,000 ft²) shall be equipped with an automatic control device. Within these buildings, all office areas less than 30 Sq. m. (300 Sq.ft.) enclosed by walls or ceiling-height partitions, all meeting and conference rooms, all school classrooms, and all storage spaces shall be equipped with occupancy sensors. For other spaces, this automatic control device shall function on either

(a) A scheduled basis at specific programmed times. An independent program schedule
shall be provided for areas of no more than 2,500 Sq. m (25,000 ft²) and not more than
one floor; or,
(b) Occupancy sensors that shall turn the lighting off within 30 minutes of an occupant
leaving the space. Light fixtures controlled by occupancy sensors shall have a wall mounted, manual switch capable of turning off lights when the space is occupied.

Exception to § 7.2.1.1: Lighting systems designed for 24-hour use.

7.2.1.2 Space Control

Each space enclosed by ceiling-height partitions shall have at least one control device to
independently control the general lighting within the space. Each control device shall be
activated either manually by an occupant or automatically by sensing an occupant. Each
control device shall :

(a) Control a maximum of 250 Sq. m (2,500 Sq. ft) for a space less than or equal to     1,000 Sq. m. (10,000 Sq. ft), and a maximum of 1,000 Sq. m. (10,000 Sq. ft) for a space greater than 1,000 Sq. m.  (10,000 Sq. Ft.)
(b) Be capable of overriding the shutoff control required in 7.2.1.1 for no more than
2 hours, and
(c) Be readily accessible and located so the occupant can see the control.

We provide the following designing services in Electrical:
Electrical Designing for Building Services

  • Design of Lighting System
    • Lighting Load Estimations
    • Determining feeders for Lighting Panel
    • Light Fixture Layout Designing
    • Calculating the lux levels
    • Worst-case egress lighting estimation
    • Lighting distribution panel and emergency panel designing
    • Switchgear sizing
    • Determining the size of transformer for lighting distribution system.
    • Intelligent Lighting and proximity control
    • Dynamic façade lighting including LED lighting
    • Auditoria and Conference Hall Lighting and conferencing system
    • Public address and Digital Conferencing Systems

Interior lighting

  • Area classifications
  • Illumination levels
  • Anti-glare design
  • Types of fittings (surface, suspended, concealed)
  • Lamp type and colour
  • System data: mounting height, hours in use, reflectance
  • Estimated connected load and load per circuit
  • Connections to essential services with estimated loads

Exterior Lighting

  • Areas served and purpose
  • Type of fitting
  • Control and wiring method, including routes
  • Lightning protection
  • Need
  • Design criteria
  • Description of proposed design
  • Planning and Design 123
  • Communications
  • Justification for each type of area
  • Type of system
  • Areas served
  • Wiring method
  • Other features and safety considerations, like call systems, intercommunication systems, fire alarm systems and other special installations may be included as required in the design and computations for the total electric power requirements.
  • Design of Power Distribution System:
    • Calculating the total power requirements, power factor correction requirements, power load determination as per your standards
    • Determining the main transformer requirements, size of generator, HV equipments, metering and protective switchgear requirements, cable trays, trenches their optimum path, cable and wire sizing, one line diagram for distribution system
    • Switchgear sizing
    • Fault Level Determination/Calculation
    • Switchgear
  • Captive and Standby Power Supplies
    • Intelligent Substations and Distribution Systems 66/33/11 KV and 33/11KV/433V
    • Silent PLC controlled Diesel and Compressed Air Generating Sets 50 and 450 Hz
    • Pre-assembled Unified and Integrated Substation  Systems
    • Intelligent UPS, Voltage Stabilizers, Inverters, CVT and Isolating Transformers
    • BMS, EMS, SCADA, DDC and other automatic control systems
  • Designing the life safety requirements
    • Determining earth protection requirements
    • Conventional Lightning Protection
    • Early Streamer type  Lightning Protection
    • Surge Arrestor
    • ELCB, RCD and RCBOs
    • Chemical Earthing
    • Transformer ang Generator Earthing

Emergency Electrical Services
All hospitals should have a reliable alternative source of power, in addition to the normal electrical service, for emergency lighting, for operation of essential equipment, and for the safety of its occupants.
The alternative source should be from:

  • a generator, when the normal service is supplied from one or more central transmission lines, or
  • an emergency generating set or a central transmission line, when the

normal supply is generated on the premises.

The emergency generating set, including the prime mover, should be located
on the premises, away from the operating department and the ward block. It
should be reserved exclusively for supplying electricity in an emergency. The
recommended circuits to which power should be provided are:

For  Lighting:

  • all exits, including exit signs, stairways and corridors
  • surgical, obstetrical and emergency room operating lights
  • nursery, laboratory, recovery room, intensive care unit, nursing station, labour room and pharmacy
  • generator set location, electrical switch-gear location and boiler room
  • one or two lifts, if needed for emergency
  • telephone operator’s room
  • computer room, when available Equipment
  • nurses’ call system
  • alarm system, including fire alarm
  • fire pump and pump for central suction system
  • blood bank refrigerator
  • sewerage or sump lift pump, if installed
  • equipment necessary for maintaining telephone service
  • equipment in operating, recovery, intensive care and delivery rooms
  • one electrical sterilizer, if installed

For  Heating, Cooling and Ventilation System

  • Operating rooms,
  • Delivery,
  • Labour,
  • Recovery,
  • Intensive care unit ( ICU and ICCUs)
  • Nurseries and
  • Patient rooms
  • Catscans
  • MRI and X-Rays
  • Blood bank
  • Burns Ward

The capacity of the emergency generating set should be 50-60% of the
normal electrical load of the hospital, to maintain the minimum level of services.

The emergency electrical system should be so controlled that, after
interruption of the normal electric power supply, the generator brings full voltage
and frequency within 10 seconds to all the emergency lighting and equipment
listed above. Lights powered by storage batteries can be provided to augment the
emergency lighting during the period of transfer switching, immediately following
the interruption of normal service; however, these should not be used to substitute
for the generator set.

We provide the following Detailing and Drafting services in Electrical:

  • Lighting layouts depicting different Lighting fixtures, Emergency and Egress Lighting, Fire Escape Lighting. Occupancy Sensors etc.
  • Power Layouts depicting Receptacles, Microwave, Cabinet Heater, Refrigerator, Freezer, Ice Machine, Coffee Machine etc.
  • Power Equipments, Luminaries, Devices counts
  • Layouts, risers and details for telecommunication systems, audio video systems, security systems, PA systems and system integration.
  • Control Circuits, Terminations Diagrams, LV/HV electrical devices, Panel Schedule, Material List
  • Arrangements such as general substation site layouts, switchgear layout plan and arrangements, control room general arrangement, power transformer general arrangement, auxiliary transformer general arrangement and neutral earthing resistor general arrangements.
  • Single line diagrams such as single line diagram with relaying and metering, overall single line diagram, AC/DC supply single line diagram, substation distribution board single line diagram etc.
  • Electrical Schematic diagrams such as Cable Feeder Bay Schematic Diagram, Transformer Bay Schematic Diagram, Bus Sectionaliser Bay Schematic Diagram, Bus Coupler Bay Schematic Diagram, Auxiliary Transformer Bay Schematic Diagram, Shunt Capacitor Bay Schematic Diagram, AC/DC Distribution Schematic Diagram etc.
  • Control, metering and SCADA interface principle diagrams
  • Control panel layouts such as PLC containing MCB, transformer, ELCB, contactor, relays, push buttons etc.
  • Cable/harness and Wiring diagrams
  • Create solar Array arrangements with the cable/wiring numbers and single line diagram after electrical system study of the existing sites.

Industrial and Substation Designing and Documentations

  • Arrangements
    • General Site Layout
    • Switchgear Layout Plan & Sections
    • Control Room General Arrangement
    • Power and Auxiliary Transformer General Arrangement
    • Neutral Earthing Resistor General arrangement
  • Single Line Diagram
    • Overall Single Line Diagram
    • Single Line Diagram with Relaying & Metering
    • AC Supply/DC Single Line Diagram
    • Sub Dist. Board Single Line Diagram
  • Cabling
    • Cable Routing Plan & Section-Basement
    • Control Room Cable Routing-Plan
    • Wall and Floor Openings in Control Building
  • Calculations
    • CT/VT Calculations
    • Grounding Calculations
    • 220/110V Battery & Charger Calculations
    • AC Load (ST T/F) Calculation
    • MV / LV Cable Sizing Calculations
    • Indoor and Outdoor Lighting Calculations
    • Relay Setting Study
  • Grounding & Lightning Protection
    • Ground Grid Layout
    • Grounding Details
    • Lightning Protection Layout & Details- Substation Building
  • Low Voltage Services
    • Substation Building Lighting & Small Power Layout
    • Outdoor Lighting & Small Power Layout
    • Telephone System Layout
  • Protection, Metering, Control, Signaling & Synchronizing
    • Interlocking Logic Diagrams
    • Typical Protection Logic Diagrams
    • In / Out Signal List
    • Cable Feeder Bay, Transformer Bay, Bus Sectionaliser Bay, Bus Coupler Bay, Auxiliary Transformer Bay, Shunt Capacitor Bay and AC/DC Distribution Schematic Diagram
    • Remote Ends Modification and Interfacing with Existing System
    • HV,MV,LV Power and Control Cable Schedule
    • Interconnection Diagrams ( For Each Panel, Cabinet & Equipment)
    • Control, metering and SCADA interface principle diagrams.

Technical Specification

  • Power Transformer
  • Circuit Breaker
  • Disconnectors
  • Surge Arrestors
  • Instrument Transformer
  • 11 KV Switchgear
  • Power / Control Cables
  • Station Battery & Battery Charger
  • LVAC & DC Distribution Boards
  • Wave Traps
  • PLCC
  • R/C/I Boards & SCADA
  • DG Set
  • Auxiliary Transformer & DT
  • Erection Specification
  • U.P.S ( Uninterrupted Power Supply)
  • Street lighting
  • Automatic Metering
  • Capacitor Banks

Transmission Line Designing and Documentations

  • Basic Design of route length with help of surve map
  • Finalization of tower co-ordinate
  • Design Basic on limit load concept
  • Tower geometry on base of electrical clearances
  • Sag tension calculation
  • Short circuit calculation
  • Load flow analysis

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