ZYSPD Series Signal Lightning Protection Device Selection

Since the signal lightning arrester is installed in series on the signalline, it is necessary to ensure that the lightning arrester can play aprotective role in the selection of lightning arrester, and also consider thematching problem between the lightning arrester and the signal line, so theselection should be mainly considered:

1, the choice of voltage level

The maximum working voltage of the signal line lightning arrester isselected according to the working voltage of the signal line data transmission.It is an important parameter for selecting a signal line lightning arrester,but there is no common standard for the selection of different signal lines inpractical applications. The maximum working voltage of the surge arrester mustbe greater than 1.2 times that of the signal cable.

2, rate matching selection

The data transmission rate of different signal systems is different. Whenthe signal line lightning arrester is installed on the signal line, thetransmission rate supported by it should not be less than the transmission rateof the signal system itself, otherwise, the signal interruption or the increaseof the bit error rate will affect the normal operation of the signal system.

3, the choice of interface type

The signal line lightning arrester is installed on the line in series. Inorder to match the impedance and maintain the minimum contact resistance, theinterface of the same type as that on the signal line should be selected. ForRJ and SD interfaces, pay attention to the line pair coordination, and forcoaxial interfaces, pay attention to the male and female coordination.