com
TB
B
A
TA
A: Beginning first cycle
B: End first and beginning second cycle
1st cycle
Temperature
in
the
test
chamber
Time t
≤
t1
10
≤
t1
10
t1 t2
6 48
42
36
30
24
18
100
90
80
60
55
50
40
30
25
20
10
relative
humidity
(%)
Functionaltest
Functionaltest
Functionaltest
Specimenconnectedandswitchedon Specimenconnectedandswitchedoff
exceptforfunctionaltests
Hours(h)
1cycle=24h
± min
96%
Temperature
(°C)
1cycle=24h
15min 80%
90%
95%
95%
+57°C
+53°C
+28°C
+22°C
± 0.
This test determines the suitability electrical equipment for use and storage under conditions high relative humidity when combined with
cyclic temperature changes and, general, producing condensation the surface the specimen.
For this test, the specimens are subjected temperatures varying
cyclically between +25°C (+77°F) and +55°C (+131°F) with relative
humidity 95% (for tolerances see figure).
The mechanical and electrical properties the product are checked
at the end the test.
To simulate such conditions, the test specimen exposed to
repeated temperature changes, for example, between −40°C
(−104°F) and +70°C (+158°F).5 h
± 0.wago.
Depending the test procedure being used, the test specimen sprayed with salt mist for
16 hours 672 hours weeks).
• Salt Spray Test per IEC/EN 60068-2-11; DNV GL, (Marine Applications)
• Quick Change Temperature per IEC/EN 60068-2-14
• Damp Heat, Cyclic (12 Hour Cycle) per IEC/EN 60068-2-30, DNV GL, (Marine Applications)
.5 h
2h
2h 2h
3h
3h
12h
6h
WAGO Rail-Mount Terminal Block Systems
Technical Information
This test similar the test performed atmospheres with varying water condensation, except that instead industrial atmospheres, salt
mist conditions will simulated heated test chamber (see picture).
In addition the salt spray tests, the damp heat test also used for
marine approvals.
The mechanical and electrical properties the product are checked
at the end the test.
This procedure repeated four times.23
www.
Voltage drop measurements are used evaluation criterion.
In process technology, for example, terminal block exposed even quicker changes temperature.
However, this test performed differently than the test procedures described previously for
general applications:
During typical test, the test specimen sprayed with salt solution for two hours and is
then stored for seven days atmosphere with relative humidity between and 95%.
Salt spray tests are widely used, especially for marine approvals.
The dwell time depends the thermal capacity the test speci-
men and should between maximum and minimum min
and the transition time min, less than s.
Without air-conditioning, distribution panels and terminal boxes are exposed seasonal (and ever-changing) temperature extremes espe-
cially the open field side.
Functional tests are performed defined times during the storage
period
