MI 3309 DeltaGT
Single test
32
Main result ............. Earth continuity resistance
Note:
Consider displayed warnings before starting measurement!
5.2.3 Insulation resistance
The insulation resistance test checks the resistance between live conductors and earthed
(or isolated) accessible metal parts of a device under test. This test can disclose faults
caused by pollution, moisture, deterioration of the insulation material etc.
The instrument measures the insulation resistance between:
The (L+N) on test socket and PE terminal on test socket / (S/EB) terminal;
LN terminal and PE terminal / (S/EB) terminal (for fixed installed appliances).
This function is primarily intended for testing Class I appliances.
Figure 5.8: Insulation menu
Test parameters for insulation resistance measurement
OUTPUT
Test
voltage
[250 V, 500 V]
LIMIT
Minimum resistance
[0.01 M
, 0.10 M
, 0.25 M
Ω
,
0.30 M
, 0.50 M
,
1 M
, 2 M
, 4 M
, 7 M
, 10 M
, --- M
]
TIME
Measuring time
[2 s, 3 s, 5 s, 10 s, 30 s, 60 s, 120 s, --- s (continuous
measurement)]
Test circuits for Insulation resistance measurement
Figure 5.9: Measurement of insulation resistance
