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ITEMLIST
Products Infomation
- Line Impedance Stabilization Network TNW-407F2 & 408F2
Line Impedance Stabilization Network
TNW-407F2 & TNW-408F2 are a Line impedance stabilization network(LISN) used to measure interference voltage leaking from the interference sources due to the power supply line in the frequency range of 150kHz to 30MHz, in compliance with standards such as CISPR (International Special Committee on Radio Interference).
TNW-407F2 is also available in single-phase specifications. TNW-408F2 is designed to measure single-phase to three-phase, three-wire systems, depending on the number of line phases in the EUT.
Additionally, by registering the correction factors of this device into radiation receiver manufactured by Kyoritsu Electronic Industry (KNM-2401, KNM-2402, KNM-2403, and KNM-S243), automatic addition can be performed through key operations, enabling direct reading measurement of interference voltage.
TNW-407F2 & 408F2
Model:
TNW-407F2 & 408F2
Maker:
KYORITSU ELECTRICAL INSTRUMENTS WORKS, LTD.
Specification
| Frequency range | 150kHz to 30MHz | ||
| Applicable standards | CISPR 16-1-2 | ||
| Test standards | CISPR 11/ 13/ 14/ 15/ 32, VCCI, PSE | ||
| Number of phase | Single-phase | Three-phase, 3-wire system | |
| Circuit type | 50Ω | ||
| RF connector | 50Ω（BNC female） | ||
| Power Line Rating | AC/DC 125V, 15A | AC/DC 440V, 25A | |
|
AC/DC 250V, 15A | ||
| Standard accessories | Coaxial cable (BNCP-3D2W-BNCP, 2m) ・・・・・1pc. | ||
| AC power cable (3m) ・・・・・・・・・・・・ 1pc. | |||
| Size / Weight | 300(W)x130(H)x160(D)mm, | 300(W)x130(H)x160(D)mm, approx.4.5kg | |
| approx.4kg | |||
| Available EMI test receiver | TNM-2401, TNM-2402 | ||
| TNW-408F2 is a Built-to-Order Model. | |||
| Options | High Pass Filter TFL-009, TFL-009D | ||
| Fixed Attenuator TPD-402 (50Ω 10dB) | |||
Precaution for use
1.Using a leakage current breaker on the power line may cause the breaker to trip.
Leakage current of AC100V, 50/60Hz, 400mA flows through the line.
[Countermeasures]
1) Use an isolation transformer.
2) Use a power line without a breaker installed.
2.When switching the measurement circuit, pulses are generated. When combined with a spectrum analyzer, there is a risk of damaging the input circuit of the spectrum analyzer.
[Countermeasures]
1) Using a high-pass filter TFL-009 or TFL-009D.
2) Switching after disconnecting the coaxial cable.
3) Following the requirements of the CISPR standard, inserting a 10dB attenuator inside or outside the lime impedance stabilization network to match the measuring terminals of the instrument to 50Ω. This model supports external attachment for this purpose.
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