Page 208 - Elpress英文样本电气连接压接系统

Deep earthing system

Benefits Theory Service life
Elpress’ approach is an earthing system Elpress deep-earthing system consists
Elpress systems for deep earthing have without joints. The electrode consists of a of steel rods and a copper line. The steel
many advantages: copper line that is driven down by a sys- rods act as sacrificial anodes with rela-
• The ground line has no joints – no risk tem consisting of 0.8 m long steel rods. tively high corrosion current against the
of contact failure. A hardened steel tip paves the way for copper electrode (cathode).
• Tip and leading rod are manufactured the ground line that is inserted into the This combination of metal both stabilises
for a large area range; 16 - 95 mm². steel tip and clamped by the leading and equalises its surroundings. If a lead
• Can be used for different types of line rod. For every 0.8 m length of driven line sheathed cable is located in the soil a few
e.g. soft or hard copper, galvanized or and rod, an extension rod is pushed into metres from the earth connection, the
stainless steel. the preceding rod. Because the earthing corrosion current from the lead anode to
• When copper line is used, the extension resistance can be continually measured the Fe+Cu earth connection is 40% less
rods act as sacrificial anodes and provi- at the other end of the line, one can stop than the value of an earth connection
de good protection against corrosion. driving when a suitable value is reached without FE rods. In other words, the lead
• Full control over the line and tip is main- and the last extension rod is then sheath has a theoretical service life of
tained and it is possible to continuously withdrawn. almost double.
measure the earthing resistance. Driving takes place with the aid of a Experiments have shown that after a few
• Thanks to the few components of the power hammer with an adapted driving months, the corrosion current drops to
system, driving is both uncomplicated sleeve or a sledge hammer and impact virtually zero. The explanation is that a
and reliable. sleeve FS62C. special layer – the polarization layer – is

• The system has a low overall weight formed next to the electrode. The current
compared to other systems. is thereby reduced and thus also the
• The overall cost of a complete earth corrosion. The amount of the reduction
connection will be lower than that depends on the properties of the soil. An
made in a conventional manner. AC load should theoretically counteract
• Rod length 800 mm for best ergono- the corrosion. This means that the prac-
mics. tical service life is often longer than the
theoretical.

Impact sleeve FS62C

Radio base station is an application for
Elpress deep earthing systems.

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