Power supplies in various designs such as bench/laboratory power supplies (stand-alone desktop unit for testing and development areas), device power supplies (switching power supply, linear/transformer power supply, capacitive transformerless power supply), or local power supplies (uninterruptible power supply, UPS) must not only fulfill functional needs. They also constitute one of the fundamental and central components of the overall system and an important interface as they are the input and output port for electromagnetic interference. They must comply with various product-specific normative EMC requirements, be it emission or immunity. This applies regardless of whether the power supply unit is a plug-in power supply unit, a stand-alone device, or a built-in power supply unit.
In addition to the classic EMC tests according to various EMC product standards (e.g., EN 62040-2), there are many specific standards and requirements for the power supply interface, both for AC (single-phase and three-phase) and DC, whether it is the variation and interruption of the voltage level and frequency or pulses of different types.
Emission tests:
- Measurements of harmonics and flicker according to EN 61000-3-2/-3 (≤16 A/phase) or EN 61000-3-11/12 (≤ 75 A/phase)
- Measurement of individual harmonics
- Measurement of the timeline and harmonic analysis
- Recording of inrush currents, storage time of the power supply, load curves including recording with a transient recorder
Immunity tests:
- Voltage dips, short-term interruptions, and voltage variations for AC and DC devices according to EN 61000-4-11/13/14/17/27/28/29/34
- Voltage and frequency variation according to EN 61496-1, EN 61131-2 and Germanischer Lloyd
- Tests according to ETS 300 132-x
- ISO 7637 and SAE J 1113
- Loading the devices with freely selectable waveforms
- Generation of amplitude and frequency pulses
Extensive measuring equipment is required for the EMC testing of power supplies. We have the appropriate equipment so that we can, for example, test all phases simultaneously in 3-phase systems.
- All power supplies up to 380 V, 1- to 3-phase, 0–5 kHz (small signal width up to 50 kHz)
- Continuous power AC up to 60 kVA (3-phase), short-time 120 kVA, peak 600 kVA
- Continuous power DC up to 20 kW
Contact
Armin Hudetz
t: +49 89 78 74 75-133
E-Mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Customer Service Team
t: +49 89 78 74 75-222
E-Mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
