2 PDP
Figure 2-5
Lightning Protection Module
Table 2-5
Definitions of Pins on the Plug of the Lightning Protection Module
Pin
Definition
Description
1, 14
Protection earth
ground
For ground protection.
2, 3, 15, 16
Level 1 lightning
protection 0 V
Discharges the lightning surge to the ground, and is
connected to the level 2 lightning protection 0 V
through an inductor.
5, 6, 18, 19
Level 2 lightning
protection 0 V
Ensures that safe power supplies are provided for the
equipment, and is connected to the level 1 lightning
protection 0 V through an inductor.
8, 20
Lightning
protection failure
alarm
When the lightning protection module fails, the
indicator on the module is solid red, and the pins output
a relatively high level.
9, 10, 21, 22
Level 2 lightning
protection N48 V
Ensures that safe power supplies are provided for the
equipment, and is connected to the level 1 lightning
protection N48 V through an inductor.
12, 13, 24, 25
Level 1 lightning
protection N48 V
Discharges the lightning surge to the ground, and is
connected to the level 2 lightning protection N48 V
through an inductor.
Note 1: Pins not included in the table are currently not in use.
Version: A
2-9
