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Channel to chassis isolation test
To qualify the isolation as 1000 V RMS and 600 V CAT II (REINFORCED),
certain tests are performed on some cards during the engineering design
qualification phase. These tests are known as type tests. These tests are
described in the IEC61010
-
1:2010 and IEC61010
-
2
-
30:2010 standards. The
principle of the tests is described below.
For the isolation barrier test, both the DC and AC tests below (see
Figure 12.14 and Figure 12.15) are used with DC voltage √2 higher than the
AC voltage. The test value meets the requirements for 600 V CAT II
REINFORCED. The test value for 1000 V RMS is lower and therefore also
covered by this test. Tests are conducted for one minute. For details, please
refer to IEC61010.
-
+
ADC
Isolated channel
-
+
ADC
Isolated channel
Chassis
3510 V RMS
Figure 12.14: AC type test channel to chassis
GEN3t
I3995-3.1 en HBM: public 267