The voltage drop measured the end the 192nd
cycle must not exceed 1.
Sulphur and its combustion products are particularly aggressive pollutants commonly found industrial environments.
Environmental Tests
All WAGO products meet the requirements the following environmental tests:
• Temperature Cycling Test per IEC/EN 60947-7-1, IEC/EN 60998-2-2
• Industrial Atmospheres per ISO 6988, IEC/EN 60068-2-42, IEC/EN 60068-2-60
The rated current applied the test specimen during temperature
rise and when the temperature has reached its maximum value;
during the second half the cycle, the current zero.com
20’ 20’ 10’
10’
85
20
Testchambertemperature
incl.22
www. Voltage drop
is measured every cycles and must not exceed maximum value
or vary greatly.
A saturated atmosphere first created a
climatic chamber heating aqueous sul-
phur dioxide solution. test procedure sim-
ulating such corrosive conditions consists exposing test specimen water condensation variable atmospheres containing sulphur
dioxide.temperaturerisedueto
current
Test
current
No
current
applied
Test
current
1cycle
n
cycles
T(°C)
WAGO Rail-Mount Terminal Block Systems
Technical Information
Tests and Testing Procedures per IEC/EN Standards (continued)
The following tests show how product reacts when exposed aggressive environment. These tests can per-
formed over period four days.
In other test procedures, products are
exposed dry corrosive gas atmosphere
containing sulfide, nitrogen and sulfur oxides
or chloride gas. The test procedure usually consists of
192 temperature cycles, for example, each cycle having duration minutes (see diagram). The gas-tightness the clamping unit
is verified voltage drop test. Climatic chambers simulate standard atmo-
spheres that could impact the long-term consistency clamping units.wago.
Depending the test severity, the specimen
is exposed both these conditions several
times. After the test, inspection must show changes that would
impair further use the product. After less than half an
hour, the test specimen fully saturated by
the condensing vapors and exposed this
atmosphere for eight hours.
This test shows the change voltage drop over longer periods under temperature cycling conditions.
.
After exposure humid atmosphere, the
test specimen subjected dry and cooler
conditions room temperature for hours.5 times the value measured after the 24th
cycle
