EFT Generators - Electrical Fast Transient Immunity Rentals

General Testing Information 

Fast transients or burst(s) are most often caused by arching associated with switch contacts during opening or closing. The arching associated with the switch often occur in short iterations, bursts, and cause interference in the associated electrical systems and equipment. The most commonly reference standard, IEC 61000-4-4 sets for voltage requirements of upwards of 4kV. This type of interference s coupled into power, control, signal and earth ports of the equipment under test (EUT) to determine the effect it will have on the function of the EUT.  Below are the associated single and multiple pulses provided by Teseq NSG 3040 Transient systems.

Common Equipment 

1. Transient/EFT Generator
2. Reference Plane
3. Capacitive Coupling Clamp
4. Oscilloscope
5. EFT Verification Kit
6. Associated Cords and Cables

Typical Setup (EM Test) 

Below is a typical EM Test transient setup designed for EFT/Burst testing with a capacitive coupling clamp (CCL). This setup, with the clamp is typically used coupling EFT onto a variety of different IO/Data lines. Should testing to power mains be done, the system has an adapter to the front of the system allow for the EUT/DUT be connected directly. The Teseq CDN 3083-B100 offers coupling decoupler for 3-phase equipment up to 690V/100Amps.

Rental Fast Transient & Surge Systems

Conducted immunity generator rentals designed for electrical fast transients provide quick test solutions compliant to IEC 61000-4-4 and a variety of other generic standards (IEC 61000-6-1, IEC 61000-6-2, etc). Our systems come with ISO 17025 accredited calibrations and arrive ready for testing with all associated cords and cabling for use. We offer systems capable of both surge and burst and stand alone systems, as well as a variety of accessories for additional testing capabilities. We also offer rentals of both differential probes and current motioning probes and other  waveform verification equipment. 

Common Immunity Systems

Haefely - Axos 5

• 5kV EFT/Burst & Surge Immunity Generator System
• Front Panel Attenuated Voltage & Current Monitoring 
• Built In 264v/16A AC 220V/10A DC Single Phase Coupler
• Rent FP-COMB 32 3-Phase 480V/32Amp AC/DC CDN
• Compact & Easy to use - No Software or License Required
• Dips Transformer DIP 116 Available IEC 61000-4-11 

EM Test - NX5

• Rent both 16 Amp & 32 Amp CDN configurations
• Variety of External Automatic & Manual CDNs 
• Rent Coupling NX7 (bsr-3-480-32) 3-Phase 480V/32Amps CDN
• Very compact & 7inch Touch Screen - Programmed Standards
• Laptop with EM Test Control Software Included with Rentals
• Current ISO 17025 Accredited Calibration 

 

Rental Pulse Systems

Our immunity pulse systems offer a wide range of capabilities, they arrive ready for testing to begin, including required cords and manuals for functionality. We always have our system updated to the newest version of the standards, with current ISO 17025 accredited calibrations, and provide technical support.  We carry products from Teseq, EM Test, Haefely, EMC Partner, and many others. Each of these suppliers products provides a unique interface, software, and testing capabilities that differentiate themselves. This large product base allows us to meet any testing needs or preferences, and with over 30 years experience we are the solution for immunity testing. 

Coupling Decoupling Networks (CDNs)

CDNs designed for EFT/Burst provide the necessary capabilities to place pulses directly onto mains power lines, often times AC and DC. Many transient generators have built in couplers designed for single phase capabilities usually around 200 volts 10 amps. The exact capabilities vary by generator and must be considered prior to rental. There are also a variety of external CDNs available allowing for interference testing on a variety of mains power including 3-phase. Unlike coupling for surge, burst doesn't require line synchronization, allowing some couplers to be used with a variety of generators. Often times, product specific 3-phase external CDNs offer both surge and burst coupling within the same unit.

3-Phase Burst Coupling Decoupling Networks

Teseq 3083-B100

• 3-Phase Coupler  100 Amps 690 VAC, 1000 VDC
• Can be used with a variety of generators 
• Meets IEC 61000-4-4 Ed.3.0 Requirements 
• Designed for the Teseq NSG 3060/NSG 3040 Immunity Platforms
• Compact & Easy to use - No Software or License Required
• Manual CDN - Correct Connection Required

EM Test - Coupling NX7

• Rental Coupler Designed for NX5 & NX7 Platforms
• Automatic CDN - Up to 480V/32amps 3-phase
• Designed for Surge & EFT to IEC 61000-4-4 & IEC 61000-4-5
• Only for use with EM Test NX5 & EM Test NX7 Immunity Platforms
• Laptop with Control Software Included with System Rentals
• Current ISO 17025 Accredited Calibration Included

 

Capacitive Coupling Clamps (CCLs)

Coupling clamps are designed to couple bursts on data lines. These series of couplers are designed in accordance with IEC 61000-4-4 ed.3 published in 2012. Some variations on these clamps include safety covers which extend over the entire system. These clamps are often interchangeable given the requirements are placed by the standard, however connections to the associated generators can differ. We offer rentals of both Teseq CDN 3425 and Thermo KeyTek CCL, both individually or with the transient generator providing a complete solution. Associated adapters can be made for a variety of generators allowing for use with many systems.

Common Devices

Thermo KeyTek - CCL

• Capacitive coupling clamp by Thermo Fisher 
• Can be used with a variety of generators 
• Compliant IEC 61000-4-4 Ed.2 & Ed.3
• Used with a Variety of Immunity Generators
• Includes Associated Cables & Cords

Cal Test - CT3681 Probe

• Selectable attenuation settings of 100x/1000x
• Up to ±7 kV differential and common mode
• Can be used to verify both Surge & EFT 
• 70 MHz bandwidth (-3 dB)
• 15kV Differential Probe - Cal Test CT4079 Rentals 
• ISO 17025 Accredited Calibration Often Included

 

IEC Webstore - IEC 61000-4-4 Preview/Purchase Standard

InCompliance - Transients Created by High di/dt and inductive loads

InCompliance - Effect of High Voltage Pulses on Resistors – ESD and EFT

AR - Immunity Requirements for the CE Mark

Teseq - Burst Generators

Teseq - Application Guide CDNs

EM Test - Burst Generators