Flameproof Light fittings technical Specifications

By -

Technical Specifications for Flameproof Distribution Boards and Lighting Fixtures

1.0 Flameproof Distribution Boards – Size, Power & Specifications

The distribution system includes cable laying, termination, and associated works.



1.0.1 Scope

This specification covers the supply, installation, and testing of the following equipment for the proposed project:

  • Flameproof distribution boards

  • Flameproof lighting fixtures

  • Flameproof exhaust fans

  • Flameproof switches with cable termination boxes

  • Flameproof plug and socket outlets

1.0.2 General Information

The objective of this specification is to define the requirements for:

  • Utility distribution boards

  • Lighting distribution boards

  • Flameproof lighting and control gear

  • Plug sockets, DP switches, junction boxes

  • FRLS cables, cable glands, lugs

  • Motors and other electrical accessories suitable for hazardous areas

All components forming part of the electrical distribution system must be manufactured and tested as per IS 2148 or equivalent international standards.

1.0.3 Codes and Standards

All flameproof fittings shall comply with the latest revisions of applicable Indian Standards (IS) and International Standards where IS is not available. Key standards include:

  • IS 2206 (Part I – 1984): Flameproof electrical lighting fittings – Glass and bulkhead type

  • IS 2206 (Part II – 1976): Flameproof tube light fittings

  • IS 2206 (Part IV – 1987): Portable flameproof hand lamps

  • IS 4012/1967 & IS 4013/1967: Dust-proof and dust-tight electric fittings

  • IS 4821/1968: Cable glands and sealing boxes for mines

  • IS 6789/1972: Bolted flameproof cable couplers and adapters

  • IS 8224/1976: Lighting fittings for Division 2 hazardous areas

  • IS 8945/1987: Electrical measuring instruments for explosive gas atmospheres

  • IS 9099/1980: Performance tests of battery-operated trucks in hazardous areas

  • IS 9628/1980: Three-phase induction motors (protection type ‘n’)

Wherever Indian Standards are unavailable, IEC / International standards shall be followed.

1.0.4 Design Criteria

  1. Lighting fixtures, exhaust fans, and switches shall conform to approved layout drawings.

  2. All distribution boards, fittings, sockets, DP switches, cables, and junction boxes shall be certified by CMRS, Dhanbad / CCE (PESO), Nagpur – India, or equivalent authorities of the country of origin.

  3. Fixtures and junction boxes shall be weatherproof (IP-55 / NEMA-4 or equivalent). Temperature class shall generally be T3 unless otherwise specified.

  4. Fixtures shall be of sheet steel, vitreous enameled with approved reflectors. All fittings except flood lights shall be provided with protective wire guards (50x50 mm mesh). Glass used shall be clear, heat-resistant, and suitable for hazardous locations.

  5. Junction boxes shall be flameproof, fitted with anti-loosening terminals, and allow sufficient space for termination. They must include earthing terminals and mounting lugs.

  6. Flameproof, double compression type nickel/chromium plated brass cable glands shall be provided. Lugs shall be of tinned copper crimping type.

  7. All fixtures shall undergo visual inspection and testing for workmanship. The company reserves the right to witness final testing with 7 days’ prior notice.

  8. All flameproof lighting fittings shall be non-integral type.

1.0.5 Guarantee

All supplied equipment shall be guaranteed for compliance with IS 2148 (as applicable).

1.0.6 Certification

All boards, fittings, and junction boxes shall be tested and certified by CCE, Nagpur / CMRS, Dhanbad or equivalent authorized agencies.

1.2 Specifications for Lighting Fittings and Accessories

1.2.1 Scope

This section covers the selection, inspection, testing, supply, and installation of flameproof lighting fittings and related accessories at site.

1.2.2 Standards

Lighting fittings and accessories shall comply with latest applicable IS/IEC standards. Where standards are not available, test certificates and proven quality will be mandatory.

1.2.3 General Requirements

  • Fixtures shall be designed for continuous, trouble-free operation without reduction in lamp life.

  • Outdoor fittings shall be weatherproof and rainproof.

  • Fixtures must be designed for easy maintenance and lamp replacement.

  • Connections between components shall withstand vibrations.

  • Each fitting shall be supplied with appropriate lamps, starters, ballasts, and capacitors.

  • Heat rise above ambient shall conform to relevant standards.

  • Fluorescent fittings shall include power factor correction capacitors to avoid stroboscopic effect.

  • All fittings must include earthing terminals.

1.2.4 Earthing

All metallic enclosures and housings shall be provided with proper earthing connections to ensure continuity.

1.2.5 Painting / Finish

  • All surfaces shall be cleaned, de-greased, and enamel coated (Stove-enameled / Epoxy-coated / Powder-coated).

  • Reflectors shall be vitreous enameled, anodized aluminum, or mirror-polished as per design.

  • All hardware shall be cadmium plated for corrosion resistance.

1.2.6 Types of Fittings

a) Industrial Fittings

  • Suitable for incandescent, fluorescent, mercury vapor, sodium vapor, or metal halide lamps.

  • Light distribution: minimum 80% in lower hemisphere.

  • Reflector efficiency: 60–80% depending on lamp type.

b) Bulkhead and Well Glass Fittings

  • Suitable for corridors, staircases, porches, and low-ceiling areas.

  • Made of cast aluminum alloy housing with heat-resistant prismatic glass and protective wire guard.

c) High Bay / Low Bay Fittings

  • Suitable for warehouses and workshops with suspension mounting.

  • Can accommodate up to 400W mercury vapor / metal halide lamps with integral control gear housing.

1.2.7 Accessories

  • Reflectors: Made of CRCA sheet steel / aluminum, stove-enameled or anodized. Flameproof fittings must not use aluminum paint.

  • Lamp Holders: Comply with IS standards, spring-loaded bi-pin type for fluorescent lamps.

  • Starters: Bimetal electrode type with brass contacts and radio-interference capacitor.

  • Ballasts (Chokes): Heavy-duty, vibration-resistant, electronic / magnetic type, tested per IS standards.

  • Capacitors: To maintain power factor ≥ 0.95, enclosed in metallic housing.

  • Lamps: Fluorescent lamps shall be “Cool Daylight” type, 3250 lumens output, with tri-band phosphor coating.

1.2.8 Spares

Unit prices for lamps, ballasts, holders, starters, capacitors, and accessories shall be quoted separately with catalog numbers.

1.2.9 Testing & Reports

  • All fittings and accessories shall undergo type, routine, and acceptance tests as per relevant standards.

  • Manufacturers shall furnish valid test certificates along with supply.

✅ Disclaimer: This technical specification is prepared for engineering and project execution purposes. All installations shall comply with the latest IS/IEC standards, local statutory regulations, and safety codes. The contractor is responsible for ensuring proper certification, testing, and safe commissioning of all electrical equipment.


Comments

Post a Comment

Popular posts from this blog

A2XWY; A2XFY Cables meaning; XLPE cables advantages over PVC cables

By -
Image
🏗 ️ Technical Specification of Aluminium Cables (IS 7098: Part 1 – 1988) When specifying aluminium cables, you will often come across codes like A2XWY . This code represents the construction, insulation, armouring, and sheath of the cable. 🔑 Cable Nomenclature Codes Code Meaning A Aluminium Conductor 2X XLPE (Cross-linked Polyethylene) Insulation Y PVC Outer Sheath W Steel Round Wire Armour F Steel Strip Armour WW Double Steel Round Wire Armour FF Double Steel Strip Armour Wa Non-Magnetic Round Wire Armour Fa Non-Magnetic Strip Armour AW Aluminium Wire Armour 👉 Example: A2XWY = Aluminium conductor + XLPE insulation + Steel round wire armour + PVC outer sheath. 📌 Note: For Copper Cables , no pref...
Read more

YWY, AYFY, AYY, AYCY, A2XCY Cables Meanings

By -
Image
📘 Cable Nomenclature Explained (PVC & XLPE Cables) Cable designations like YWY, AYFY, A2XCY might look confusing at first glance. But once you understand the logic behind each letter , reading technical specs becomes straightforward. 1. Basic Conductor Material ·          A → Aluminium conductor ·          (If “A” is absent, it means Copper conductor) 2. Insulation Material ·          Y → TROPODUR = PVC insulation ·          2X → TROPOTHEN-X = XLPE insulation 3. Armouring Types ·          W → Round Steel Wire Armouring ·          WW → Double Round Steel Wire Armouring ·          F → Flat (formed) Steel Strip Armouring ·       ...
Read more

Cable size and current carrying capacity

By -
Image
Cable size and current carrying capacity for XLPE insulated cable, non-armored, Twin or multicore cable is as below:- Conductor operating temperature is 90 degree Celsius Ambient temperature: 30 degree Celsius. Cable size and current carrying capacity for XLPE insulated, Armored, Twin or multicore cable is as below:- Conductor operating temperature is 90 degree Celsius Ambient temperature: 30 degree Celsius. For air and 20 degree Celsius for ground for installations require to comply with BS: 7671 Correction factors:- For Ambient temperature: Ambient temperature in degree Celsius Correction Factor 25 1.02 30 1.00 35 0.96 40 0.91 45 0.87 50 0.82 55 0.76 60 0.65 65 0.58 70 0.50 75 0.41 80 Ground Temperature Ambient temperature in degree Celsius Correction F...
Read more