What is an EFT?
EFT is an electrical fast transient pulse defined under IEC/EN 61000-4-4 standard.
IEC 61000-4-4 is under the EMC (electromagnetic compatibility) and designed to test electrical fast transients and burst events in electronic system. The IEC standard defines the EFT immunity test on power, signal, control & earth ports, test set-up and test levels. The preferred test levels for EFT test are given as below.
What is an EFT Generator?
EFT generator is an electrical fast transient/burst test system that simulates EFT pulses, which used for evaluating the performance of electrical and electronic equipment power supply port, signal, control, and grounding ports when subjected to electrical fast transient burst interference in accordance with IEC/EN 61000-4-4 standard.
EFT Waveforms
EFT waveforms define a rise time of 5ns and a pulse duration of 50ns.The burst period is 300ms and includes 75 transients. For a pulse repetition rate of 5kHz, the 75 pulses take 15ms, and for a pulse repetition rate of 100kHz, they take 0.75ms. Shape of the pulse is given as below.
EMCSOSIN EFT Generators
| Model | EFT S4 | EFT S6 | EFT T4 | EFT T6 |
| Output voltage | 0.2~±5kV | 0.2~±6kV | 0.2~±5kV | 0.2~±6kV |
| Frequency | 1kHz~1200kHz ±10%, continuously adjustable | |||
| Polarity | Positive/negative/alternating | |||
| Running time | 1~9999s, continuously adjustable | |||
| Internal impedance | 50Ω ±10% | |||
| Pulse rise time | 5ns, ±30% | |||
| Pulse width | 50ns ±30% (50Ω load), 35ns~150ns (1kΩ load) | |||
| Number of pulses | 1~255, continuously adjustable | |||
| Phase | 0~359°synchronous, asynchronous, automatic | |||
| Burst period | 150~9999ms, continuously adjustable | |||
| Coupling/decoupling network | Built-in, single-phase three-wire, 16A | Built-in, three-phase five-wire, 16A | ||
| Power supply | AC 220V ±10%, 50/60Hz | |||
| Ambient temperature | 15℃~35℃ | |||
Features of EMCSOSIN EFT Generator
- User friendly 7" touch panel display
- Support multi-language & facilitate users
- Built-in environment self-test program
- Programmable operation
- Pre-programmed IEC/EN 61000-4-4 standard test level parameters, easy to operate
- The highest pulse frequency is up to 1.2MHz
- RS232/USB port, PC control operation & printable test report
Shanghai EMCSOSIN have been committed to the EMC testing field, specializing in providing EMC testing instruments, product rectification and training service. Our self-developed EMC equipment including: ESD simulator, EFT/burst generator, surge generator, voltage dips generator, power frequency magnetic field generator, damped oscillatory wave generator, automotive pulse simulator etc. EMCSOSIN also provide customers with professional EMC system integration solutions.
Please do not hesitate to contact us for a quote. Thank you!
