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POWER DISTRIBUTION BOARD
Power Distribution Board (PDB) specifications cover electrical ratings (voltage, current, short-circuit), physical construction (material, IP rating, dimensions, finish), components (MCBs, fuses, busbars, meters, relays), protection (earthing, IP/IK ratings), and environmental factors (temperature, humidity), ensuring safe and efficient power distribution for residential, commercial, and industrial uses, following standards like IEC 61439.
Key Specifications:
- 1. Electrical Ratings:
Voltage: System voltage (e.g., 230V/415V AC) and insulation voltage (e.g., 800V).
Current: Rated current (e.g., up to 1600A) and short-circuit withstand (e.g., 10kA-50kA).
Frequency: Typically 50 Hz.
- 2. Construction & Enclosure:
Material: Mild steel (0.8-1.2mm thick), powder-coated, or thermoplastics like polycarbonate (PC).
IP Rating: Ingress Protection (e.g., IP44 for general, IP65 for dust/water jets).
IK Rating: Mechanical Impact Protection (e.g., IK 08).
Doors: Smooth finish, sealed (rubber/neoprene), lockable.
- 3. Components:
Protection Devices: Miniature Circuit Breakers (MCBs), Switch Fuse Units (SFUs), Fuses (HRC).
Busbars: Copper bars for power distribution.
Metering: Voltmeters, ammeters (CTs), status lamps (LED).
Accessories: Cable glands (brass, heavy-duty), terminals, push buttons, relays.
- 4. Protection & Safety:
Earthing: Adequate copper flat earthing.
Interlocking: Electrical and mechanical interlocking for safety.
Standards: Compliance with IEC 61439, IS:13032, IS:8623.
Ambient Conditions: Temperature (e.g., -5°C to 40°C) and Humidity (e.g., 50% at 40°C).
Ventilation: Adequate for moisture/vermin proofing.
Application: Residential (lighting, appliances), Commercial (HVAC, offices), Industrial (machinery, automation).
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