patura P 20 Notice D'emploi page 46

ENGLISH
Installing and testing an earth system
Select a suitable site for the earth system. Sites need to be:
• A t 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.
• I deally 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 included earth stake into the ground. Connect the green earth lead of the energiser to the
earth stake. Often, especially with bad conducting or dry soil longer earth stakes are necessary.
Connect these in series with the existing earthrods to the earth connection of the energiser. Ensure
good contact between the wire and the earth stake.
Test the earth system, using the following procedure:
1. Turn off the energiser.
2. A t 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. C heck 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 of below 0.2 kV would be best.
live
live
46
Energiser
P20: 0.17 J
P40: 0.23 J
P60: 0.33 J
short circuit
Earth stake
at least 1x 0.25 m
at least 1x 0.65 m
at least 1x 0.65 m
Energiser
Energiser
Earth
DVM
Earth