User's Manual Part 2

Quantum 1000 Base Station User
3.7
Single Point Grounding Concept
Extensive analysis and investigation of installations has led to
the majority of the failures is likely to be the presence of multi
and in the huts. Single point grounding these elements will eliminate ground voltage differentials
will dramatically increase the equipment survivability during surges.
Single point grounding requires that the grounding leads from the antenna, Base Station and Surge
Protection devices for a particular sector, are bonded together at the same point on the tower down
conductor. It is not necessary to bond all the sectors tog
individual sector have the same ground point on the tower.
In the equipment hut, in the event of an indoor installation of the Base Station then the chassis ground of
the Base Station and all the Surge Protection
figure 42).
Figure
It is important to note that the following ground guidelines are followed during installations:
1.
Surge Protection devices generally
ground wire length when finished connecting it to the single point earth ground
2.
Never loop or coil up the ground wire, always connect it straight to ground.
3.
A good earth ground impedance is less than
4.
Measure ground impedance at the point where the protector ground wire is connected and not at
the ground rod.
5.
Avoid sharp bends. Connect the ground wire as straight as possible.
6.
Connect the protector ground wire and equipment ground (both power g
ground) to a single common ground.
7.
Make sure all connections are fastened securely and are tight.
8.
Never install protectors during a storm and always follow your local safety codes.
Quantum 1000 Base Station User
Guide
Rev 1.1, Page
Single Point Grounding Concept
Extensive analysis and investigation of installations has led to
the belief that the root cause at the heart of
the majority of the failures is likely to be the presence of multi
-
point grounding of equipment on the towers
and in the huts. Single point grounding these elements will eliminate ground voltage differentials
will dramatically increase the equipment survivability during surges.
Single point grounding requires that the grounding leads from the antenna, Base Station and Surge
Protection devices for a particular sector, are bonded together at the same point on the tower down
conductor. It is not necessary to bond all the sectors tog
ether but to ensure the components of any
individual sector have the same ground point on the tower.
In the equipment hut, in the event of an indoor installation of the Base Station then the chassis ground of
the Base Station and all the Surge Protection
Devices grounds must be grounded at the same point (see
Figure
42 - Single Point Grounding Concept
It is important to note that the following ground guidelines are followed during installations:
Surge Protection devices generally
connect to ground by using a ground wire. Cut any extra
ground wire length when finished connecting it to the single point earth ground
Never loop or coil up the ground wire, always connect it straight to ground.
A good earth ground impedance is less than
1.0 ohm.
Measure ground impedance at the point where the protector ground wire is connected and not at
Avoid sharp bends. Connect the ground wire as straight as possible.
Connect the protector ground wire and equipment ground (both power g
round and telecomm.
ground) to a single common ground.
Make sure all connections are fastened securely and are tight.
Never install protectors during a storm and always follow your local safety codes.
Rev 1.1, Page
41 of 70
the belief that the root cause at the heart of
point grounding of equipment on the towers
and in the huts. Single point grounding these elements will eliminate ground voltage differentials
and this
Single point grounding requires that the grounding leads from the antenna, Base Station and Surge
Protection devices for a particular sector, are bonded together at the same point on the tower down
ether but to ensure the components of any
In the equipment hut, in the event of an indoor installation of the Base Station then the chassis ground of
Devices grounds must be grounded at the same point (see
It is important to note that the following ground guidelines are followed during installations:
connect to ground by using a ground wire. Cut any extra
Measure ground impedance at the point where the protector ground wire is connected and not at
round and telecomm.
Never install protectors during a storm and always follow your local safety codes.