Fluke 1535 - Test Circuit Connections

Insulation Tester
Test Circuit Connections
13
Figure 3 shows how make the measurement setup better. Connect the Guard
terminal to the unused wire and attach it to the inner insulation. This ensures
that the Tester measures the leakage between the selected conductor and the
outer shield, but removes the leakage path between conductors.
Figure 3. Improved Guard Terminal Connection
Test Circuit Connections
XW Warning
To prevent possible electric shock or personal injury:
 Disconnect power and discharge all high-voltage capacitors
before you measure resistance.
 Connect the Earth (E) test lead before the live (L) test lead and
remove the L test lead before the E test lead.
 Before and after tests, do a voltage test to confirm that the Tester
does not detect the presence of hazardous voltage. See Ta b l e 4 . If
a hazardous voltage is shown on the display, remove power from
the circuit under test and disconnect test leads.
To connect to the circuit under test:
1. Put the test leads into the correct terminals. See Ta b l e 5 .
2. Connect the test leads to the circuit under test.
Leakage
Current
Shield
E
G
L