MI 3101 EurotestAT: Instrument operation
Automatic testing
33
Figure 4.20: Blank auto sequence
Example of building an auto sequence
A house installation wall socket protected with fuse (type gG, In = 6 A, td = 5 s) and RCD
(type AC, I
N
= 30 mA) shall be tested.
The following measurements must be performed:
Equipotential bonding resistance of PE terminal to main PE collector (R
≤
0.1
),
Insulation resistances between L – N, L – PE and N – PE (U = 500 V, R
1 M
),
Voltages on the socket,
Line impedance with fuse verification,
RCD trip-out time at nominal current,
RCD trip-out time at increased current (5 x I
N
).
The name of test sequence number 10 is “Sock. 6A / 30mA(AC)”. Description of the test
sequence is: “Verification of wall socket, protected with fuse and RCD”.
For the measurement the following conditions shall apply:
Equipotential bonding resistance and insulation resistance measurement has to be
performed on de-energized socket;
Equipotential bonding resistance test (see figure
5.6
) should be performed with the
universal test cable and extension lead;
Insulation resistance test should be performed with the plug cable or commander
(see figures
5.2
and
5.3
);
Other tests have to be applied on energized test socket with the plug cable or
commander (see figures
5.13,
5.22
and
5.26
).
