CDN-UTP

(Published in June 2003)

The CDN-UTP is a sophisticated coupling and de-coupling network for superimposing surge impulses on balanced communication lines in accordance with IEC61000-4-5 (Figure 12: unshielded symmetrical interconnection lines), ITU-K20, K21 and FCC part 68. The CDN-UTP is specially designed to fulfil the requirements of modern high speed communication lines.

Rating: Surge 1.2/50, 8/20 µs: max. 6.6 kV
Surge 10/700 µs: maxi.6.0 kV


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Application: tested and recommended:
- Analogue subscriber lines (a/b-line)
- ISDN
- ADSL resp. xDSL
- Ethernet: 10Base-T
- USB
- Interbus
- Profibus
- ASI = Actor Sensor Interface
Standards: IEC 61000-4-5, FCC part 68, ITU-K.44, -K.20, K.21
Coupling: - direct
- via 90V gas arrestor (GTD)
- via 90V gas arrestor // 100nF
- via 66V clamping diode
- different resistors: 25, 50, 100, 80, 100 Ohm
 De-coupling: - common mode inductance 20 mH
- d.c. resistance 3.5 Ohm
ma. unbalanced 0.003 Ohm
Can be used with generators: TRA2000IN4, TRA2000IN6,
MIG0603IN2, MIG0603IN3, MIG0603EN


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