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Leaded varistors
AdvanceD-MP, S14 series
B722*
Test
Climatic sequence
Rapid change of
temperature
Damp heat, steady state
Test methods/conditions
The specimen shall be subjected to:
a) dry heat at UCT, 16 h, IEC
60068-2-2, test Ba
b) damp heat, 1st cycle:
55 ° C, 93% r. H., 24 h, IEC
60068-2-30, test Db
c) cold, LCT, 2 h, IEC 60068-2-1, test
Aa
d) damp heat, additional 5 cycles:
55 ° C/25 ° C, 93% r. H., 24 h/cycle,
IEC 60068-2-30, test Db.
Then the specimen shall be stored at
room temperature and normal humidity
for 1 to 2 h.
Thereafter, the change of V V shall be
measured. Thereafter, insulation resis-
tance R ins shall be measured at V = 500
V.
IEC 60068-2-14, test Na, LCT/UCT,
dwell time 30 min, 5 cycles
IEC 60068-2-78, test Ca
The specimen shall be subjected to
40 ± 2 ° C, 90 to 95% r. H. for 56 days
without load / with 10% of the maxi-
mum continuous DC operating voltage
V DC . Then stored at room temperature
and normal humidity for 1 to 2 h.
Thereafter, the change of V V shall be
measured. Thereafter, insulation resis-
tance R ins shall be measured at V = 500
V (insulated varistors only).
Requirement
| ? V/V (1 mA)| ≤ 10%
R ins ≥ 100 M ?
| ? V/V (1 mA)| ≤ 5%
No visible damage
| ? V/V (1 mA)| ≤ 10%
R ins ≥ 100 M ?
Please read Cautions and warnings and
Important notes at the end of this document.
Page 6 of 22
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