Schneider AEG AS-BDA0-21

AS-BDA0-21 is a low-voltage switchgear belonging to Schneider Electric (formerly AEG) product series. Compliant with IEC 61439-1/2 standards, it is applicable to 400V AC (rated working voltage) systems with a rated frequency of 50/60Hz and an IP rating typically ranging from IP30 to IP40. It delivers reliable electrical protection and control for scenarios like industrial power distribution, building power distribution, and energy stations (photovoltaic, energy storage).

Key Technical Parameters

Product Features

1. Modular structure: Adopts framework system and withdrawable (MNS-compatible or similar) layout, facilitating on-site quick assembly, maintenance and capacity expansion.
2. High reliability: Busbars feature silver-plated contact surfaces and are fastened with constant-torque bolts to ensure low contact resistance and long-term stability; independent busbar compartment with IP40 rating prevents accidental electric shock.
3. Corrosion & dust resistance: Steel plates undergo cathodic electrophoresis treatment and pass 720+ hours salt spray test, meeting application requirements in outdoor or humid environments.
4. Safety interlocking: Full set of components enclosed in metal cabinet with comprehensive interlock system to prevent misoperation; live components (e.g., main switch) are placed in sealed gas-filled compartments with solid insulated busbars, avoiding intrusion of corrosive gas, dust and small animals.
5. Short-circuit & arc withstand capacity: Passes IAC internal arc fault test, with short-circuit withstand current up to 31.5kA/1s, suitable for high-impact occasions.

Structure & Components

• Cabinet/Frame: Cold-rolled steel plate (thickness ≥2mm) processed by continuous roll forming of nine-fold profiles, ensuring straightness error ≤0.5mm/m.
• Busbar system: Copper busbars (standard specification TMY 80×8) with silver-plated surface, covered with double-insulation heat-shrinkable sleeves (withstand voltage >3kV), and housed in independent compartments.
• Switch components: Air-insulated circuit breakers, isolating switches, contactors, relay protection devices, etc., all enclosed in metal cabinets.
• Power distribution room: Spacious cable compartment for easy wiring and later maintenance; equipped with protective doors, grounding devices and lightning protection measures.

Typical Application Fields

• Industrial power distribution (manufacturing workshops, automated production lines)
• Building power distribution (commercial buildings, residential communities)
• New energy stations (photovoltaic, wind power, energy storage systems)
• Infrastructure (airports, ports, rail transit)
• High-reliability power supply for data centers and communication rooms

Installation & Maintenance Key Points

1. On-site inspection: Confirm cabinet is placed flat with stable foundation; check integrity of anti-corrosion coating.
2. Grounding & lightning protection: Achieve reliable grounding in accordance with GB 50057-2011 (Code for Design of Lightning Protection of Buildings), with grounding resistance ≤4Ω.
3. Cable laying: Use cross-linked polyethylene insulated copper cables compliant with IEC 60364-5-52 (e.g., TMY 3×300 + 2×150), ensuring cable bending radius ≥6× cable outer diameter.
4. Busbar connection: Adopt constant-torque bolts (preset value ±3%) with lock washers to ensure contact resistance ≤0.1mΩ.
5. Interlock commissioning: Complete functional tests of all mechanical and electrical interlocks before power-on to ensure automatic power cut-off in case of misoperation.
6. Regular maintenance: Conduct visual inspection, fastener recheck, insulation resistance measurement (≥1MΩ) and full functional test (closing, opening, protection action) every 12 months.