In
tr
oduc
tion
Page 7
© JVA Technologies. www.jva-fence.com
If you want to use traditional “End of Fence” monitoring these models also
have an optional fence return terminal.
The JMBx-ZM50 contains a Loop Monitor. This means it can power a fence
from both ends in a loop of one or more live wires around a property. By
doing this it can determine and report the position of a fault to within one
sector in fifty. Previously loop monitors had a range limitation of approxi
-
mately 10km of fence or 30km of wire. By incorporating DFD™, the JMBx-
ZM50 has greatly increased this range
Note1
.
All JMB models also contain a Ground (Earth) monitor which can be con
-
figured to create an alert if the earth system is insufficient. They are also
Remote Ready and can be controlled using a JVA remote control.
The JMB’s are designed to meet or exceed the requirements of
IEC60335.2.76.
Note 1:
While this feature has been designed and tested in the lab, insuffi
-
cient field testing has been done to find the new limitations.
