7cm 20pF coupling clamp

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according “BSH EMC requirements specification for modules” chapter “2.2.2 Burst, capacitive application on other than AC mains supply wires”

This coupling clamp is used for EMC interference tests. For this purpose, fast, electrically high-voltage pulses are fed via the clamp's 20pF coupling capacitance to the cable harness of the DUT
(see Figure 2).
The electrical and mechanical properties guarantee safe and reproducible test execution with easy handling and a robust construction. These are based on the many years of experience of the development departments at B/S/H/.

Electrical and mechanical data: :

• coupling capacity 20pF
• connection on the generator side with a 50Ω high-voltage coaxial plug
• connection line: coaxial cable, 50Ω, 9KV, 2.5m with a 20cm long ground extension of the coax cable shielding and a 4mm bunch plug
• housing
  • material:
    • Polyamide-12 sintered
    • dielectric strength 92 KV/mm
    • volume resistivity 1013 – 1015 Ω*cm
    • surface resistance 1015Ω
  • filling material for fixing the wiring harness:
    • conductive textile gasket with Ni/Cu fabric
  • closing mechanism:
    • neodymium magnets
  • external dimensions:
    • L X W X H = (72.5 X 34.5 X 18) mm
  • weight: 20g

 

Picture 01

Picture 02

Self-test :

Intrinsic function test of the entire test set-up (pulse generator, cable, coupling clamp) using an integrated spark gap.