patura P30 Mode D'emploi page 27

Note: Use more wires for smaller animals and wild animals. Polytape should be used when
greater visibility is required (e.g. horses).
Installing and testing an earth system
Select a suitable site for the earth system. Sites need to be:
• At least 10 m (33') from other earth systems (e.g. telephone, mains power or the earth
system from another energiser).
• Away from stock or other traffic that could interfere with the installation.
• At a site that can be easily observed for maintenance.
• Ideally, at a site that has damp soil (e.g. a shaded or swampy location).
Note that the earth does not need to be directly adjacent to the energiser installation.
Drive the PATURA earth stake into the ground. Connect the green earth lead from the
energiser to the earth stake.
Often, especially with bad conducting soil or dry soil more respectively longer earth sta-
kes are necessary. Connect them in series with the existing earth stakes respectively with
the earth terminal on the energiser. Provide a good connection. The length of the earth
stake should be at least 0.65 m.
Test the earth system, using the following procedure:
1. Turn off the energiser.
2. At least 100 m (330') away from the energiser, short circuit the fence by laying
several steel stakes or lengths of pipe against the fence. For best results, the fence
voltage should be lowered to 2.000 V or less. In dry or sandy conditions, it may be
necessary to drive the stakes up to 300 mm (12") into the ground.
3. Turn the energiser back on.
4. Using a PATURA Digital Voltmeter, ensure that the fence voltage is below 2 kV.
5. Check your earth system. Insert the voltmeter's earth probe into the ground at the
full extent of the lead, and hold the hook against the last earth stake. The tester should
not read more than 0.5 kV. Anything higher than this indicates that better earthing
is required. Either add more earth stakes or find a better ground area to drive in the
earth stakes. A voltage below 0.2 kV would be best.
short circuit
live
live
Energiser
Energiser
Earth
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DVM
Earth