SETTING UP
21
AVTM21-415Ja Rev. A June 2005
4.
If a guarded test is to be run, connect the guard lead of the
apparatus to be tested to the shield of the output cable.
(See Sections 8 and 9.) Insulate the guard circuit from
ground.
5.
With the Test Set switch OFF, connect the input cable to
the service outlet.
CLEARANCES
Be sure adequate clearances are maintained between energized
conductors and ground to prevent arc-over. Such accidental
arc-over may create a safety hazard or damage the equipment
being tested. The position of the exposed conductors with
respect to ground can often be maintained by tying the
conductors in place with clean, dry nylon rope. Table I lists the
minimum air clearances that must be maintained and also
suggests the minimum path length along a rope if it is tied
directly to a conductor. Finally, the table indicates minimum
personnel clearances (based on OSHA specifications) that will
limit the danger of static induced voltages being developed on
nearby insulated objects, including people.
TABLE 1: Minimum Air Clearances
Voltage
of Test
Direct Air
Path
(inches)
Path Along Dry
Nylon Rope
(inches)
Minimum
Personnel
Clearances
(feet)
5 kV
0.5
1-1/8
2
10 kV
1.0
2-1/4
2
15 kV
1.5
4
2
30 kV
4.0
10
2.4
After completion, make a careful review of the test setup. Tests
can then be conducted per Section 8. For convenience a
condensed operating procedure is given on the Instruction
Card.
Summary of Contents for ATEC 210415 Series
Page 2: ...15 kV Megohmmeter Test Set Catalog No 210415 Series M...
Page 9: ...M 2 AVTM21 415Ja Rev A June 2005 Figure 1 15 kV Megohmmeter Test Set Catalog No 210415...
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Page 23: ...M 16 AVTM21 415Ja Rev A June 2005 Figure 2 Schematic Diagram of the 15 kV Megohmmeter...
Page 30: ...SETTING UP 23 AVTM21 415Ja Rev A June 2005 Figure 4 Testing in a Substation...
Page 32: ...SETTING UP 25 AVTM21 415Ja Rev A June 2005 Figure 6 Testing Transformer Terminals...
Page 33: ...M 26 AVTM21 415Ja Rev A June 2005 Figure 7 DC Motor Test Setup Figure 8 Generator Test Setup...
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Page 73: ...M 66 AVTM21 415Ja Rev A June 2005 Figure 15A Interior View Figure 15B Interior View...
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Page 82: ...M 2621 Van Buren Avenue Norristown PA 19403 1 800 723 2861 ext 8578 megger com...
