Megger Digiflex Com, Инструкция по эксплуатации

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man_digiflex_com_en_02_5.doc 5
TABLE OF CONTENTS
1. GENERAL ................................................................................................... 9
1.1 A
DVICE FROM
M
EGGER
.................................................................................. 9
1.2 T
ERMS AND CONDITIONS OF WARRANTY
........................................................... 10
1.3 S
AFETY
I
NSTRUCTIONS
.................................................................................. 11
1.4 I
NDICATIONS USED IN THE DESCRIPTION
............................................................ 12
2. TECHNICAL DESCRIPTION ........................................................................ 13
2.1 G
ENERAL
D
ESCRIPTION
................................................................................. 13
2.2 S
PECIFICATIONS
........................................................................................... 15
2.3 I
TEMS
S
UPPLIED AND
O
PTIONAL
E
XTRAS
.......................................................... 19
3. OPERATION ............................................................................................. 21
3.1 M
EASURING
T
ERMINALS
............................................................................... 21
3.2 D
ISPLAY
..................................................................................................... 22
3.3 F
UNCTIONS OF
K
EYS AND
R
OTARY
E
NCODER
..................................................... 24
3.4 G
ETTING
S
TARTED
(I
NSERT
/ R
EPLACE
A
CCUMULATOR
) ....................................... 27
3.5 S
WITCHING
O
N AND
O
FF
.............................................................................. 27
3.6 M
AIN
M
ENU
.............................................................................................. 28
3.7 C
OMPENSATION OF
I
NITIAL
R
EFLECTION
........................................................... 28
3.8 H
OW TO
L
OCATE A
F
AULT
............................................................................. 29
3.8.1 Fields of Application ........................................................................ 29
3.8.1.1 Faults Causing a Negative Reflection ..................................................... 30
3.8.1.2 Faults Causing a Positive Reflection ....................................................... 30
3.8.1.3 Further Fields of Application .................................................................. 32
3.8.2 Testing a Cable with Known Nominal Velocity of Propagation NVP
or with Known Pulse Propagation Velocity (
v
/
2
) ............................................. 32
3.8.3 How to Determine an Unknown Nominal Velocity of Propagation or
Pulse Propagation Velocity ............................................................................. 34
3.8.4 Simplification of Fault Location Using Comparative Tests .............. 34
3.8.5 Averaging ........................................................................................ 35
3.8.6 Mode NEXT ..................................................................................... 36
3.8.7 Mode IFL ........................................................................................ 37
3.8.8 Distance depending Amplitude correction ...................................... 37
3.8.9 How to Use the Marker ................................................................... 38
3.8.10 Change of Pulse Width .................................................................... 39
3.8.11 Self Test ........................................................................................... 40
3.9 M
EMORY
F
UNCTION
.................................................................................... 41
3.10 S
ERIAL
I
NTERFACE
........................................................................................ 43