GPS Lightning Protection 

hopf Elektronik GmbH


Lightning Protection FG4495G0

It is not possible to avoid overvoltages caused directly by lightning, but a device can be protected against the destructive effects. It is therefore necessary to short-circuit all the lines with overvoltage and reduce it as quickly as possible. Once the disturbance is reduced again the device is to return to its original specifications.Indirekter Blitzschutz für GPS

The lightning protection therefore consists of different components which, due to the high frequency and small signal power, are arranged in "Strip-line" technique. Due to fast absorber diodes with a response time of < 1 nsec and a discharge current 10 kA the potential difference between antenna core and zero are kept at a constant ± 6 V. The subsequent double chamber gas arrester short-circuits the lines to the earthing point when lit.

This combination guarantees the potential separation of the antenna circuit from the other electronics in an undisturbed state.

Test certificate overvoltage and EMI-protection by SIEMENS company.


Technical Data

  • aluminium housing: (250 x 105 x 95 mm)
  • input / output: BNC-connector
  • earthing point: screw fitting M 6
  • weight: ca. 3,5 kg
  • speed of response: < 1 nsec
  • current stability: 8/20 µsec, wave: 5 kA
  • protection level : at 6 kV 1.5/50 µsec Wave at input: < 12 V
  • input impedance : 50 Ohm
  • insertion loss : max. 3 dB

 

Installation

 


Further information you can find in the manual system information GPS

 


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