Megger ATEC 210415 Series, Руководство пользователя

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AVTM21-415Ja Rev. A June 2005
9. Note voltage, resistance, and time as required by the test
procedure being followed. Make settings and take readings
as described in steps below.
10. If indicated resistance fluctuates during the reading the
stabilizing switch may be set to the "IN" position (see
Section 9).
11. To measure insulation resistance at 10 kV, set the
voltmeter range switch to 15 kV and set the voltage to
exactly 10 kV. Read the upper black scale. Read the
resistance in megohms on the upper black scale of the
megohmmeter. Multiply value read by multiplier to which
the megohmmeter range switch is set (i.e. by 1, 10, 100 or
1000; see Section 9).
12. To measure insulation resistance at 5 kV, set the voltmeter
range switch to 7.5 kV and set the output voltage to
exactly 5 kV. Use the lower red meter scale. Read the
megohmmeter lower red scale and multiply the value by
the megohmmeter RANGE SWITCH setting.
13. To measure insulation resistance at voltages other than 5
or 10 kV:
a. Read megohms on the scale corresponding to the
voltmeter range, matching red (inner) scales and black
(outer) scales.
b. Multiply by the megohmmeter range setting.
c. Multiply by the reading from the voltmeter lower
green scale. (See "Megohm Readings", for
explanation).
BREAKDOWN OF TEST ITEM
In the event of failure of the apparatus being tested, the Test
Set circuit breakers will trip out within twenty (20) seconds.
When the stabilizer is in use trip-out may not occur but the