8
(3). Generator Room and Launch Tower Grounding Connection.
Generator Room and Launch Tower is independent outdoors generally, connect both together to form second
return circuit, then install detector, as the picture below.
(4). Construction Grounding Connection.
If R
1
～
R
6
…
R
n
is a independent grounding body under the ground, don
’
t connect together, are multipoint
grounding system, convenient to test grounding resistance. If R
1
～
R
6
…
R
n
are connected together under the
ground, for the single point grounding system, testing grounding resistance in accordance with single point
grounding system, direct installation test return circuit resistance, can judge grounding connection condition.
For the large-scale construction grounding grid, it is to monitor its equipotential value of grounding condition
between grounding down lead and grounding network. If problems occur, it would be located at the connection
point between grounding down lead and grounding network, and judging that whether its equipotential value
qualified or not.
(5).Oil Storage Tank
’
s loading and Unloading Point Grounding Connection.