Datasheet

618 PHOENIX CONTACT
IEC 60068-2-42/43
Environmental testing methods
The mechanical and electrical service life
of terminal blocks is directly dependent on
the metal parts and insulation materials
used. To evaluate the climatic effects on
electrical connections, terminal blocks are
subjected to various environmental
simulation tests. The conductor contact
points, the knife disconnect points, and the
test contacts are included in these tests.
The contact resistance values, the secure fit
of the conductor, and the visual assessment
of the contact points after each test serve
as evaluation criteria.
– 10-day storage in aggressive SO
2
industrial atmospheres at 25°C and
75% humidity
– 4-day storage in aggressive H
2
S
atmospheres at 25°C and 75% humidity
After the test has been completed, the
contact resistance must not exceed 1.5
times the initial value. The function of the
terminal block must be ensured without any
limitation. The high standard of quality of
Phoenix Contact terminal blocks is achieved
by using corrosion-resistant, high-grade
copper alloys.
IEC 60068-2-11/-52
Salt spray
Particularly in shipbuilding, technical
components have to function continuously
in corrosive atmospheres. The salt content
of the air combined with the increased
humidity places high demands on the metal
parts used. The impact of the climate at sea
can be simulated on the basis of the above
standard.
The resistance of the materials in a
corrosive atmosphere is tested using salt
spray. The test objects are placed in the test
chamber and subjected to a finely dosed
spray of 5% sodium chloride solution (NaCl;
pH value 6.5 - 7.2) at a temperature of 35°C
for a period of 96 hours.
At the end of the test, the test objects are
visually inspected and an electrical test is
performed to show the influence of this
corrosion test on the contact point in more
detail.
All Phoenix Contact terminal blocks,
whatever their connection technology,
create gas-tight connections. This means
that the contact point is protected against
corrosion even under extreme climatic
conditions.
Technical information
Quality tests