• NNLK 8140, 150 kHz - 30 MHz, 1000V/800A, 50 µH, Single Path LISN
  • NNLK 8140, 150 kHz - 30 MHz, 1000V/800A, 50 µH, Single Path LISN
  • NNLK 8140, 150 kHz - 30 MHz, 1000V/800A, 50 µH, Single Path LISN
  • NNLK 8140, 150 kHz - 30 MHz, 1000V/800A, 50 µH, Single Path LISN

NNLK 8140, 150 kHz - 30 MHz, 1000V/800A, 50 µH, Single Path LISN

  • High Current High Voltage LISN
  • Line Impedance Stabilisation Network
  • 150 kHz to 30 MHz
  • 1000V AC/DC,  800 A
  • 50 µH || 50 Ω (+/- 20 %) 
  • CISPR 16-1-2

PARTNER:

MARKETS:

TEST STANDARDS:

Data Sheet

SPECIFICATIONS

 

NNLK 8140, 150 kHz - 30 MHz, 1000V/800A, 50 µH, Single Path LISN

The single path high current Line Impedance Stabilisation Network (LISN, AMN) NNLK 8140 mainly serves to measure disturbance voltage in band B from 150 kHz to 30 MHz. It is designed to withstand very high currents and voltages. So far voltage probes had to be used for high currents and high voltages. However, voltage probes do not provide a standard impedance to the device under test so a voltage probe measurement has reduced reproducibility. The NNLK 8140 providing a continuous current capability of 800 A solves this problem.

Before putting the NNLK 8140 into operation it must be connected to the earth potential. The green/yellow wing terminals at the front and back side have to be used for this purpose. During a conducted disturbance voltage measurement all paths of the device under test should be connected to one NNLK 8140 each to provide the correct impedance to each path. In a DC or AC system usually, 2 units of NNLK 8140 are required. In a rotating current system, 3 or 4 units may be required depending on the usage of a neutral line. One path at a time is connected to the EMI receiver using a coaxial cable with a BNC plug. All other BNC connectors of the NNLKs which are not being measured at the time must be terminated using high power BNC 50 Ω termination resistors. We recommend using termination resistors which can dissipate at least 10 watts or preferable 50 watts. The exact test set up is described in CISPR 16-2-1.

The impedance of the NNLK 8140 is compliant to CISPR 16-1-2 with 50 µH || 50 Ω. The LISN provides power to the DuT with a very low voltage drop. It can be used for DC, AC, or three-phase rotary current. Assuming a rotary current system with 400 V between L1 and L2 and L3 DuTs up to 1 MW can be driven using 3 units of NNLK 8140. 

 

Specifications:  
Frequency range: 150 kHz – 30 MHz
Max. cont. current: 800 A
Max. current (limited time) 1000 A
Max voltage (DC) 1000 V
Max. voltage (AC 50/60 Hz): 1000 V
Max. voltage (AC 400 Hz): 500 V
Impedance: 50 µH || 50 Ω (+/- 20 %)
DC-Resistance mains-EuT: < 3 mΩ
Impedance (50 Hz): 16 mΩ
EuT Connectors: Wing terminals M16x1.5 removable
Dimensions of the housing with wing terminals opened(WxDxH): 445 x 770 x 505 mm
Weight: 46 kg

 

 

 

The NNLK 8140 is equipped with a high pass filter but not with a pulse limiter. The EMI receiver should therefore be protected against overload. The VTSD 9561 F is an external pulse limiter which is suitable for this purpose. If the amplitude of the disturbance voltage exceeds values which could be dangerous for the EMI receiver input the pulse limiter will cut these pulses. This causes additional spectral lines in the frequency domain (“phantom spectral lines”). The excess-pulse-energy illuminates an electric bulb. If the bulb glows or lights up the measurement is not valid because of the phantom spectral lines. In such a case more attenuation must be used at the measuring port of the LISN. An external attenuator must be dimensioned sufficiently especially under the presence of strong harmonics of the mains frequency
OTHER PRODUCTS IN THE SAME CATEGORY:
Loading...