Megger BTDR1500 Guia Del Usuario página 15

Multi
If a multi section cable is selected then before the instrument can generate the results, you
have to instruct it what gauges are used in each section and the length of each section.
M U LTI SECTI O N
FAU LT FI ND I NG
TEM P
SI NGL E M U LTI EXIT
+10 . 0 C
Pr es s M ENU t o s el ec t
Pr ess M ENU t o
Pr es s t o p r oce ed
Pr es s t o p r oce ed
The first screen allows the temperature and measured variables to be set. Note: on selecting
feet, the temperature is automatically set to Fahrenheit. For each section, use the Menu key
(#4, table1) to highlight the required parameter and the cursor keys (#3 & #4, table 1) to
change the selected value. The distance parameter can be changed digit by digit. When the
details for that multi section are complete, press the Up / Down Gain key (#7, table 1) to
proceed. If the fault is calculated to be within this section then the distance to fault from the
beginning of this section and the overall distance to fault will be displayed. If, however, the
fault is not in this section, then you will be prompted to enter the details of the next section of
cable. This will continue until the section containing the fault is entered or you select Exit.
M EA SUR E
m etr es
EXIT
M U LTI SECTI ON 01 DTF FRO M SECTIO N 03
GAUG E D ISTANC E
1. 250 k m
Cu 0.60 00000
Tot a l DTF 3.571 km
Pr es s M ENU t o
EXIT Pr ess
NOTE: Only metres or feet are selectable (not Ω) and the user-defined gauge is not
availablein multi section.
If the distance reads "00000 m" when you proceed to the next section or the derived
resistance for that length of the indicated gauge is < 10 Ω then the error message: GAUGE /
DISTANCE U/R is displayed. Similarly, if the derived resistance is > 1000 Ω for 2-wire and
2000 Ω for 3-wire, then the error message: GAUGE / DISTANCE / O/R is displayed. If the
entered distance is greater than 65535 m or ft, then the error message: ABOVE MAX OF
65535 is displayed.
Pressing the Up / Down Gain key (#7, table1) at this point will return you to the Bridge Menu.
t o p roce ed
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