Powerfields Virtual Catalog

Powerfields.com | 1-800-843-3702 44 The energizer creates the heartbeat of your fence system by providing the electric current that flows through your fence wires. Energizers come in many styles including AC (110V Plug), DC (battery-powered), Solar, or a combination to allow flexibility. When selecting an energizer, keep the following factors in mind: • Power source and location of fence • Species to contain or exclude • Length of fence • Number of wires The joule rating has become a standard in defining the power that can be transferred to a fence conductor from an energizer. This energy rating was defined in the late 1800’s but was not applied to electric fence until the introduction of Low-Impedance style ener- gizers. Once referred to as non-short-able energizers, the low-impedance energizer has become the standard in today’s industry. The low-impedance energizer operates by delivering a high voltage pulse with an on-time duration of milliseconds. These energizers were developed to overcome shorting out on plants and also to eliminate the danger of injury from a consistent shock being sent through the fence line (such as with “weed-burner” style energizers). Although the Joule rating is the optimal measurement for today’s fence energizers, it can be a difficult concept to understand. Under- standing joules requires an imagery that is created through experience, such as being able to visualize a mile vs a kilometer. We find it best to in-cooperate acre's of fence into understanding the joule rating. As a general rule of thumb, in a perfect environment, 1 Joule should be effective on 40 acres of fence. However, no environment is perfect and there are many conditions that need to be considered including: • Ground conditions • Moisture • Type of wire being used • Animals being contained One reality you can depend on is: It is virtually impossible to overcharge a fence! The calculation is a complicated electrical principle that defines the amount of electrical work being transferred (or work done). The Simple Equation: Volts x Amps (watts) x On-Time = Joules 45° hill Joule = HP Hill = Fence Key Speed = Voltage Weight = Ohms/Weed Load 140 HP 400 HP 10,000 LB. 10,000 LB. (GROUND RODS) N (TOP VIEW) Positive wire to fence High Voltage Burial wire. (GROUND RODS) Place energizer under eave or inside of building. ELECTRIC FENCE Installation CALCULATION of Joules STEP 3: THE ENERGIZER ENERGIZER SETUP UNDERSTANDING JOULES