EM TEST offers a large variety of coupling/decoupling networks for different test applications for single phase and three-phase mains supplies as well as for signal/data lines and telecommunication lines. Apart from the standard coupling/decoupling networks EM TEST also provides special solutions for higher supply voltages (e.g. 3x690VAC or up to 1,000V DC) and higher currents (up to 100A and more) or for higher surge voltages up to 12kV.

Application

Coupling/decoupling networks for conducted immunity testing

Immunity test to conducted disturbances, induced by radio-frequency fields according to the standards IEC/EN 61000-4-6 and CISPR 15 introduce different types of coupling/decoupling networks according to the characteristics of the interconnection lines. A vast range of appropriate coupling/decoupling networks as well as the necessary accessories for standard compliant levelling are avialable.

You'll find an overview of all available CDN's on the datasheet. Apart from the listed standard coupling/decoupling networks EM TEST also supply special or customised coupling/decoupling networks.

Quality by LÃœTHI

All EM TEST CDN's are manufactured by Lüthi

The Lüthi AG, headquartered in Frenkendorf, Switzerland, is one of the world's leading and best known manufacturers of coupling/decoupling networks for conducted immunity testing and emission measurement as well as of EMC measuring clamps and accessories.

In January 2010 the Lüthi AG became a part of the EM TEST Group. It will be independently operated and the Lüthi brand will remain. As one of the pioneers in the development of EMC measurement clamps, Lüthi AG products are chosen by the most important suppliers of EMC measuring systems world-wide.

Standards

Application

1-phase Coupling/decoupling networks for EFT/burst and Surge

The single phase coupling/decoupling networks of the CNI 501x-series are used to couple EFT/Burst pulses and Surge pulses on to AC and/or DC supply lines.

Within the range of EM TEST coupling/decoupling networks we offer different models for test voltages from 5kV up to 10kV with DUT currents of 16A, 32A, 63A and 100A (higher current ratings on request) for the various test requirements and equipment configuration.

Benefits

All EM TEST CDN's are manufactured by Lüthi

The CNI 501x-series coupling/decoupling networks are built fully complying to the standard requirements of EN/IEC 61000-4-4 and EN/IEC 61000-4-5. Residual voltage levels are carefully considered as well as the value of the decoupling inductors in order to meet the requirements with regard to voltage drop at the rated current of each type of CDN. Apart from the coverage of the EN/IEC 61000-4-5 standard the CNI 501Bx series also fully complies with the surge test requirements outlined in ANSI/IEEE C62.41.

Being fully controlled by the related generators couplings of the CNI 501x-series are set automatically as selected for the test (either by manual operation or via software). When performing surge tests the generators will automatically set the required source impedance depending on the standard and the coupling mode.

Standards

Application

Coupling/decoupling networks for EFT/burst and Surge

The three-phase coupling/decoupling networks of the CNI 503x series are used to couple EFT/Burst pulses and Surge pulses on DC-lines or to three-phase (4-wire or 5-wire supply lines) mains supply systems for voltages up to 1,000VDC / 3x690VAC. This includes the more and more common testing of inverters used in the area of renewable energies (e.g. photovoltaic systems, wind power stations, electric cars).

Within the range of EM TEST coupling/decoupling networks we offer different models for test voltages from 5kV up to 10kV with DUT currents of 16A, 32A, 63A and 100A (higher current ratings on request) for the various test requirements and equipment configuration.

Benefits

The CNI 503x-series coupling/decoupling networks are built fully complying to the standard requirements of EN/IEC 61000-4-4 and EN/IEC 61000-4-5. Residual voltage levels are carefully considered as well as the value of the decoupling inductors in order to meet the requirements with regard to voltage drop at the rated current of each type of CDN. Apart from the coverage of the EN/IEC 61000-4-5 standard the CNI 503Bx series also fully complies with the surge test requirements outlined in ANSI/IEEE C62.41.

Being fully controlled by the related generators couplings of the CNI 503x are set automatically as selected for the test (either by manual operation or via software). When performing surge tests the generators will automatically set the required source impedance depending on the standard and the coupling mode.

Standards

Application

CNI 508N1 - The unique coupling/decoupling network for shielded high-speed communication lines

The EM TEST CNI 508N1 is the first coupling/decoupling network available on the market to couple Surge, Ringwave and EFT/Burst pulses onto shielded high-speed communication lines with data rates up to 1,000MBit/s in a single unit.

The CNI 508N1 can be used for test voltages of up to 4kV. For tests using the 1.2/50us surge the CNI 508N1 is based on IEC 61000-4-5(2005).

Additionally, it fully supports PoE and PoE+ standard requirements as per IEEE 802.3af-2003 and IEEE 802.3at-2009.

Benefits

CNI 508N1 - Single box for Surge/Ringwave/Burst coupling onto shielded high-speed communication lines

The EM TEST CNI 508N1 is a specifically designed and approved coupling/decoupling network for tests of shielded high-speed communication lines.

By means of the CNI 508N1 Surge pulses (1.2/50us) as per IEC/EN 61000-4-5, Ringwave (0.5us/100kHz) as per IEC/EN 61000-4-12 and EFT/Burst pulses (5/50ns as per IEC/EN 61000-4-4) can be coupled. A maximum test voltage of 4kV can be applied to the lines under test.

Its unique design allows data rates of up to 1,000MBit/s to be transmitted without degradation by the coupling/decoupling network. The CNI 508N1 complies to PoE requirements as per IEEE 802.3af-2003 as well to P0E+ (PoE plus) requirements as per IEEE 802.3at-2009 with a current of up to 600mA and a power of up to 25.5W.

The integrated decoupling network protects the auxiliary equipment limiting the residual voltage to max. 15V at 2kV test voltage. The CNI 508N1 is fitted with female RJ45 connectors to connect telecommunication devices.

Standards

Application

Coupling/Decoupling networks for testing measuring relays and protection equipment

The CNV 508N4 series are special coupling/decoupling networks being used to perform "Electrical disturbance tests for measuring relays and protection equipment" in accordance to IEC 60255-22-1. A capacitance of 0.5uF is specified to couple the pulses on to the lines.

Each line has a decoupling inductor of >1.5mH to protect the auxiliary equipment from being subjected to the test pulse. The disturbance signal used for this test is a damped oscillatory pulse with a frequency of 1MHz, generated by the EM TEST OCS 500N6.

Benefits

Fully-automatic coupling networks for IEC 60255-22-1

Depending on the configuration of the DUT several different test set-up's are used to perform tests in differential mode (line-to-line of the same pair) or common mode (each pair to ground or one pair to all other pairs with these being grounded). The CNV 508N4 is automatically set by the OCS 500N6 selecting the desired coupling mode and lines to be coupled. The coupler offers capability to test up to 4 pairs/8 lines.

The test of measuring relays and protection equipment as outlined in IEC 60255-22-1 includes different coupling modes to test the DUT under different conditions. Each pair of lines is tested individually in differential mode. Common mode test is applied to each pair to ground and to each pair with the other pairs connected to ground.

The EM TEST CNV 508N4 series are a dedicated CDNs for these applications, fully automatic, remote controlled by the OCS 500N6 for the various coupling modes. This offers best user convenience and reliability that all couplings required are tested sequently. The selected coupling mode and lines actually being tested are indicated by LEDs.

Standards

Application

CNV 504N/508N - Coupling decoupling networks for signal/data lines

Surge pulses or Ringwave pulses are applied to unshielded unsymmetrical interconnection lines (signal/data lines) by means of standalone coupling/decoupling networks. For such testing EM TEST offers a range of CNVs for either 4 or 8 signal/data lines.

According to EN/IEC 61000-4-5 resp. EN/IEC 61000-4-12 the pulses are coupled via different coupling elements such as capacitors, gas arrestors or diodes depending on the characteristics of the line signals.

Benefits

CNV 504N/508N series - Multifunctional coupling/decoupling networks

The EM TEST CNV 504N/508N series of coupling decoupling networks are multifunctional CNVs for the application of Surge and Ringwave pulses onto signal/data lines.

The standard CNV 504N/508N models combine three different applications; coupling of Surge pulse via capacitor or gas arrestor and coupling of Ringwave pulses via capacitor being required by the relevant standards. The required coupling mode can easily be selected by means of a simple jumper.

The CNVs also include the required decoupling part consisting of decoupling inductors of 20mH for each line. To protect the auxiliary equipment being needed for testing the DUT an additional protection circuit is integrated at the signal/data line input.

EM TEST offers CNV 504N/CNV 508N coupling/decoupling networks for various test voltages up to 10kV and for higher signal voltages/currents (up to 600V and up to 4A). Dedicated CNVs are available e.g. for railway applications as per EN 50155 and for other customer specific test applications.

Standards

Application

Coupling/Decoupling networks for testing measuring relays and protection equipment

The CNV 504N5-series coupling/decoupling networks are used to apply damped oscillatory waves onto signal/data lines in accordance to EN/IEC 61000-4-18. A capacitance of 0.5uF is specified to couple the pulses on to the lines. Each line has a decoupling inductor of 1.5mH to protect the auxiliary equipment from being subjected to the test pulse. The disturbance signal used for this test is a damped oscillatory pulse with a frequency of 100kHz or 1MHz, being generated by the EM TEST OCS 500M6.

The CNV 504N5 series supports voltages of up to 250V AC/DC and a current of up to 4A AC/DC.

Standards