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LKZ-720 OPERATING MANUAL version 1.02
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One output of the transmitter is connected to the tested conductor, while the other is connected to
the ground, along with other cores of traced cable. The transmitter generates a voltage signal in the
form of high-frequency pulses distributed in time in the manner typical of the voltage mode. The gen-
erated electric field is detected by the receiver.
3.4.3 Voltage-current mode UI
Operation in voltage-current mode "UI" is used for cables without voltage, when a closed circuit is
created (e.g. unbroken line without voltage, shorted line).
Fig. 9 Diagram of the voltage-current mode.
One output of the transmitter is connected to the phase conductor or neutral conductor of the
tested circuit, while the other respectively to the phase conductor or neutral conductor. The transmit-
ter, using own supply voltage, generates a current signal (max. 40mA) in the form of pulses distribut-
ed in time in the manner typical of the voltage-current mode. The magnetic component of the field
generated in this way is detected by the receiver.
3.4.4 Mode of detecting P3 phase
LKZ-720 may operate in P3 mode, which is called "phase" mode. It involves the transmitter set in
mode P3, which is connected to a live circuit - between the phase conductor L and a neutral conduc-
tor N or PE grounding.
Fig. 10 Diagram of detecting P3 phase.
The user specifies the number of the reference phase, connected to the transmitter. Set P3 mode
in the receiver. The receiver identifies the phase of the tested conductor, using information provided
by transmitter via radio and basing on the voltage crossing zero.
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