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AVTMPFL22M Rev 1 April 2011
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Impulse Current (Surge Impulse, I.C.E.) : High Voltage Prelocation
1.
Set the rotary Voltage Control Knob (item 21) to the “Zero Start” position
(item 9).
2.
Set the Voltage Range switch (item 20) to the desired “surge” range either 8
or 16kV. At this stage the Status Bar (item 1) will glow “Red”.
NOTE: Range and function switch cannot be moved if a mode is active.
3.
Set the Mode (Filter) selector switch (item 19) to the Surge and Proof Burn
group. Both lamps will illuminate, advising that either of these modes are
available.
4.
Depress the Surge Mode pushbutton of the desired mode. Selection is
confirmed by the pushbutton remaining illuminated and the other
pushbutton extinguishing.
5.
On the MTDR, select Impulse / Impulse Current.
6.
The MTDR is armed (made ready) by selecting “ARM” from the menu
buttons. The word “armed” is displayed on the MTDR.
For FULL instructions on the use of the TDR refer to MTDR100 User
Guide.
7.
The required “Impulse or Surge” voltage is set by rotating the Voltage
Control knob (item 21) to the required voltage, which is normally slightly
higher than the voltage that the fault broke down at. The selected voltage is
displayed on the d.c KiloVolt meter (item 13) the Voltage Preview lamp
(item 12) is illuminated indicating that the displayed voltage is a “preview”
with no HV being applied.
8.
Set the Surge Repetition control (item 14) to the desired repetition rate from
3secs to 30sec.
9.
Depress the Initiate button (item 22) and the impulse or surge voltage is
applied to the cable under test, and the resultant waveform on the MTDR
can be analysed to determine the fault position.
Note: By observing the Voltmeter and Ammeter the operator can confirm that there has
been a full discharge.
If operation “fails to trigger”, increase voltage and repeat operation.
To deselect depress the Surge pushbutton (item 17), which also engages the
internal earthing/grounding and removes any High Voltage.
The Status Bar (item 1) will glow “green” when all HV removed and the
instrument and test piece has been earthed/grounded.
Summary of Contents for PFL22M1500 Series
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Page 43: ...AVTMPFL22M Rev 1 April 2011 33 Addendum 1 MTDR100 User Guide...
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Page 69: ...AVTMPFL22M Rev 1 April 2011 59 Addendum 3 Cable Fault Location Applications Guide...
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Page 77: ...AVTMPFL22M Rev 1 April 2011 67 Megger Quality System Certificate...
