This covers environments characterized by a low-voltage public network or a dedicated local infrastructure. Examples include commercial buildings, schools, and light industrial laboratories. The testing levels for immunity are standard. Industrial Electromagnetic Environment
| Phenomenon | Test Standard | Test level | |------------|--------------|-------------| | Electrostatic Discharge (ESD) | IEC 61000-4-2 | ±8 kV air / ±4 kV contact | | Radiated RF | IEC 61000-4-3 | 10 V/m (80 MHz – 1 GHz) | | Electrical Fast Transients (Burst) | IEC 61000-4-4 | ±2 kV (I/O), ±4 kV (power) | | Surge (Lightning) | IEC 61000-4-5 | ±1 kV (L-L), ±2 kV (L-PE) | | Conducted RF | IEC 61000-4-6 | 10 V (0.15 – 80 MHz) | | Voltage dips & interruptions | IEC 61000-4-11 | 0% for 1 cycle, 70% for 25 cycles | en 61326-1 pdf
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┌────────────────────────────────────────────────────────┐ │ EN IEC 61326-1 │ │ (General EMC Requirements - Base Standard) │ └───────────────────────────┬────────────────────────────┘ │ ┌──────────────────┴──────────────────┐ ▼ ▼ ┌──────────────────┐ ┌──────────────────┐ │ EN 61326-2-1 │ │ EN 61326-2-2 │ │ Sensitive Test & │ │ Portable Test & │ │ Measure Devices │ │ Monitoring Tool │ └──────────────────┘ └──────────────────┘ en 61326-1 pdf