1. Connection of test cables
The PA BXT test adapter is connected to the PM 20 SPD tester, which has to be switched off,
via the test cables included in delivery:
-
PA BXT; input socket (red)
Test cable (red)
PM 20; output socket (red)
-
PA BXT; input socket (blue)
Test cable (black)
PM 20; output socket (black)
(see
figure, test set-up 1, page 10)
1.1 Connection of the power supply unit
The power supply unit is connected to the PM 20 via the enclosed phone jack adapter (see
figure, test set-up 1, page 10). Alternatively, the tester can be operated by means of a 9 V
battery.
2. Test procedure
2.1 The PM 20 tester is only to be switched on if the test set-up is protected against contact!
The protection module to be tested is inserted into the slot of the
PA BXT
test adapter. Then,
the cover (contact closure) of the
PA BXT
test adapter has to be closed (see figure, test set-
up 1, page 10)!
2.2 For more detailed information on measurements required for testing a protection module, please
refer to the test scheme and the evaluation table (see pages 11 to 16). The test programme
(programme selector switch, test step selector switch and polarity selector switch) has to be
set before starting the measurement. When measuring, only one of the two slots may be occupied.
Protective device BXT ... type
-
When testing protective devices of the
BXT... type
, only the upper slot may be used, which is
labelled
BXT...
on the left-hand side.
-
When plugging in the protective device, the plug direction
[IN/OUT]
has to be observed!
The plug direction is marked by
IN OUT/protected
above the slot. For test programmes and
test steps, which have to be carried out for each protective device, please refer to the evaluation
tables (see pages 11 and 12).
Protective device BCT ... type
-
When testing protective devices of the
BCT... type
, only the upper slot may be used, which is
labelled
BCT...
on the left-hand side.
-
When plugging in the protective device, the plug direction
[IN/OUT]
has to be observed!
The plug direction is marked by
IN OUT/protected
below the slot. For test programmes and
test steps, which have to be carried out for each protective device, please refer to the evaluation
tables (see pages 13 to 16).
6. Test set-up 1 using PA BXT test adapters (Blitzductor
â
BXT; BCT)
Page
9