RCD-Auslösung bei LED-Außenfassaden

Diagnose von Ableitstrom und Isolationsfehlern je Stromkreis.

Mechanism

Separate normal load current, protective-conductor current, residual current and real insulation faults.

Calculation

Illustrative: 12 supplies × 0.55 mA plus 1.4 mA other contribution gives 8.0 mA. Use only exact model data and field measurements.

Workflow

1. Document RCD and earthing system.
2. Inspect moisture and insulation.
3. Measure each branch.
4. Subdivide only through a qualified designer.

Do not approve

• PE is disconnected.
• A larger RCD is the only fix.
• No branch measurements exist.

FAQ

Can DC lighting be involved?

Yes, through upstream AC/DC supplies and distribution.

Sources

1. IEC 60364-4-41
2. IEC 60598-1
3. ABB RCD guide
4. PSU example
5. LIKELIGHT

Author: LikeLight Tom, Operations. Technical reviewer: 待确认.