Preferably measure the earthing resi-
stance continuously while driving down
the earth line. When the appropriate
value reached, driving interrup-
ted and the last extension tube is
withdrawn (and can therefore be
reused).
2. mm² line should folded double
before the tip attached. Based on
that and the maximum earthing resistan-
ce can estimated how much line is
needed. Splicing and bran-
ching the earth line contact crimped
by means Elpress through connectors or
branching sleeves and tools. parallel
earth connection possible?
2.11:3
11
Structure and operation the system
Elpress systems consist the
following parts:
• hardened steel tip
• leading rod
• extension rod
• driving sleeve/impact sleeve
• earth line (not supplied Elpress)
This feature simple
• the earth line inserted into the
hardened steel tip and clamped the
leading rod. Plan the earth connection. Arrange parallel earth
connection necessary. does not, there are the following
possibilities:
- more rods than line required; the rod
may have been bent and then runs
parallel the surface the soil and the
line does not follow the pipe through the
ground.
• the extension rods are fitted with a
guide pin, which during work pushed
into the preceding rod.
5.
4. Resistivity different soil conditions.
.
3.
In the event interrupted driving, start
again distance least 1.
- the rod continues and the line stops; the
line has come loose and can pulled up
or the tip has folded. Determine the soil resistivity. heavier soil/at greater depth, a
power hammer should used.
What are the soil conditions?
Normal and loose soil steel pipe 17
mm sufficient.
- both stop; stone rock has been found.
Practical advice:
1.
If the stone does not shatter after about
10 seconds, you must start over.
1.5 times the
line length already driven down.
Hard and rocky soil- steel rod mm
(type HD) should used.
3. Measurement ground resistance.
• earthing resistance can measured
continuously. Start the driving locking the line
into the hardened tip with the leading
rod.
Driving starts. The earth line locked the hardened
steel tip with the leading rod. Make sure that the line maintains the
same speed down into the soil the
rod. loose soil, a
sledgehammer and impact stud suffi-
cient. NOTE: Do
not rotate the driving sleeve during the
work
