![background image](http://html1.mh-extra.com/html/sonel/lkg-720/lkg-720_operation-manual_1320061020.webp)
LKZ-720 OPERATING MANUAL version 1.02
18
3.4 Modes of system operation
The system may work in one of the available modes: current, voltage or voltage-current, phase
identification, power, system security location, clamp and neon lamp.
In "
AUTO
" mode, the transmitter connected to the circuit, selects the most favourable mode, bas-
ing on the conditions in the tested line.
In the receiver, use
MODE
button to change the operation mode, i.e. select the voltage path
(connected to electric field antenna) or current path (connected to magnetic field antenna) or to switch
the receiver into the other modes. In most cases, the path voltage is switched at the voltage mode of
the transmitter, while the current path at the current or voltage-current mode of the transmitter. How-
ever, in certain circumstances, another field may be stronger than it is indicated by the operation
mode of the transmitter, therefore you have the possibility to choose.
3.4.1 Current mode I
Operation in current mode "
I
" may be performed on undamaged conductors being under voltage
of at least 9V.
Fig. 7 Diagram of the current mode.
One output of the transmitter is connected to the phase conductor for AC network or positive con-
ductor for DC network of the tested circuit, while the other to the neutral conductor. Voltage existing in
the circuit it is used by the transmitter to generate a current signal (max. 40mA) as a high-frequency
pulses distributed in time in the manner typical of the current mode. The magnetic component of the
field generated in this way is detected by the receiver.
3.4.2 Voltage mode U
Operation in voltage mode "U" is used for cables without voltage, when it is impossible to create a
closed circuit (e.g. break in the conductor).
Fig. 8 Diagram of the voltage mode.
Содержание LKG-720
Страница 1: ......
Страница 2: ......
Страница 70: ...LKZ 720 OPERATING MANUAL version 1 02 68...
Страница 71: ......
Страница 72: ......