IEC 61000-4-4 6kV Intelligent Electrical Fast Transient Generator
(EFT)
Standards & Clauses:
IEC 61000-4-4/ GB/T17626.4: Electrical fast transient immunity test
Samples and Restrictions:
Industrial controllers, home appliances, medical electronics,
communication electronics, components, automation controllers, etc.
Application:
Intended to demonstrate the immunity of electrical and electronic
equipment when subjected to types of transient disturbances such as
those originating from switching transients (interruption of
inductive loads, relay contact bounce, etc.)
Test Principle:
Burst immunity test is the interference generated by many
mechanical switches in the simulation grid when switching inductive
load. These types of disturbances are characterized by narrow
clusters of pulses with high pulse repetition rates (kHz-MHz),
steep rising edges (ns), short durations of individual pulses
(10-100 ns) with amplitudes up to kV level. Narrow pulses in
clusters can charge the junction capacitance of the semiconductor
device, which can cause a line or device error when energy
accumulates to a certain degree. During the test, a pulse is
superimposed on the power supply line (via the coupling /
decoupling network) and the communication line (via the capacitive
coupling clip) to interfere with the device. The experimental part
of the EUT mainly includes the power supply port, PE, signal and
control port of the equipment.
Structure:
7-inch touch LCD interface, rich in functions, easy for operation
and upgrading software.
User-programmable test program with up to 1000 sets of memory.
Built-in three-phase five-wire 16A power network, network and host
2 in 1, miniaturized design.
Imported non-inductive high-power resistors are used in the pulse
forming circuit to ensure stable pulse waveforms.
The coupling network uses the latest optimization technology, with
low attenuation and sufficient output energy.
Built-in temperature and humidity sensor for real-time monitoring
of the experimental environment.
EUT output comes with high-strength industrial-grade standard
sockets, which is more convenient and reliable.
Intelligent program-controlled high voltage power supply with
built-in high voltage overvoltage, overcurrent and short circuit
protections.
Self-diagnosis function, intelligent judgment of high voltage,
abnormal pulse output.
Use Environment:
Power supply: 220V±10%, 50/60Hz
Ambient temperature: 5 °C ~ +40 °C, there should be no high
concentration of dust, corrosive gas, flammable and explosive
objects.
Technical Parameters:
| Control & Operation | Electrical control and touch screen intelligent operating system |
| Open Circuit Output Voltage | 0.25-6kV ±5% |
| 50Ω Load Output Voltage | 0.125-3kV ±5% |
| Pulse Waveform | 5/50ns, 50Ω and 1000Ω load |
| Rise Time tr | 5ns ±30%, 50Ω load |
| 5ns ±30%, 1000Ω load |
| Pulse Duration td | 50ns ±30%, 50Ω load |
| 50ns -15/+100sn, 1000Ω load |
| Source Impedance | 50Ω ±20% |
| Output Polarity | Positive, negative, positive and negative cycles, positive and
negative alternating, first positive and then negative, first
negative and then positive |
| Pulse Repetition Frequency | 0.1-1200.0kHz ±10% |
| Burst Length | Standard: 15ms@2.5kHz/5kHz, 750μs@100kHz, 250μs@300kHz |
Adjustable: the number of pulses can be selected from 1 to 255 Burst length = (number of pulses - 1) / pulse repetition frequency |
| Burst Period | 100－999ms |
| Trigger Mode | Synchronous or asynchronous |
| Synchronous Phase | Free setting 0-360°, resolution 1° |
| Programmable Test Program | Built-in IEC standard and user-defined programs, up to 1000 groups |
Built-in Network Capacity (three phases and five lines) | AC, three-phase 380V, 16A (Max), 50/60Hz |
| DC, 380V, 16A (Max) |
| Built-in Network Coupling Method | L1, L2, L3, N, PE, can be combined |
| Built-in Network Coupling Device | 33nF ±10% capacitive coupling |
| Use environment | Temperature: 15 ° C -35 ° C, relative humidity: 10% -75% |
| System Power | AC220±10%, 50/60Hz, about 300W |
| Dimensions | W 470mm * H 215mm * D 500mm |
| Weight | About 25kg |
| Output Waveform Diagram |
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| Measured Waveform |
4.8kV 50Ω load output waveform(1000:1) |
4.8kV 1000Ω load output waveform(1000:1) |
| Test Configuration Layout | |
