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2 OVERVIEW
NADIR is used for :
•
The PRE-IDENTIFICATION of a cable and core in an excavation
•
The LOCATION of the corresponding feeder and phase in a
substation.
These operations are carried out on a powered LV network under load.
The operating principle of NADIR is that the Transmitter draws a complex signal down the LV feeder,
with no disturbances for the connected loads. This signal will be found between the Transmitter
connection point and the power source; i.e.: Substation.
This signal is analysed digitally in the Receiver, which enables the user to discriminate between cables
and phases.
The signals used and their analysis draw on MADE SA’s experience with the previously developed
products DELTAPHASE and ZENITH.
These principles are the subject of a patent application.
NADIR is supplied in a carrying case holding :
•
A Transmitter and connections
•
A Receiver with an integral transducer and two remote transducers.
