| 摘要 |
An electric fence installation with an earth return wire (8) and a protective alternate current path is disclosed. An electric fence energiser (1) has at least three output terminals (4, 5, 9), where two or more of the terminals are earth terminals (4, 9). At least one of the earth terminals provides a protective impedance (10) which reduces the flow of current through that terminal relative to that which may flow through the other earth terminal(s). The shock received by an animal (11) when the shock path (12) is through the earth wire return system can be limited, but still effective, while the shock is not reduced when the shock path does not include the earth wire return system but is through a traditional ground return.
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