Reference only
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No. Item Specification Test method
18 Life Appearance No marked defect. Impulse voltage
Each individual capacitor should be subjected to a
12kV impulses for three times. Then the capacitors
are applied to life test.
The capacitors are placed in a circulating air oven
for a period of 1000 h.
The air in the oven is maintained at a temperature
of 125+2/-0 C, and relative humidity of 50% max..
Throughout the test, the capacitors are subjected
to a AC850V(r.m.s.)<50/60Hz> alternating voltage
of mains frequency, except that once each hour
the voltage is increased to AC1000V(r.m.s.) for 0.1 s.
Pre-treatment : Capacitor should be stored at
1252C for 1 h, and apply the
AC4000V(r.m.s.) 60s then placed at
*
1
room condition for 242 h
before initial measurements.
(Do not apply to Char. SL)
Post-treatment : Capacitor should be stored for 1 to
2 h at *
1
room condition.
Capacitance
change
Within 20%
I.R.
3000M min.
Dielectric
strength
Per item 3
19 Temperature and
immersion cycle
Appearance No marked defect. The capacitor should be subjected to 500
temperature cycles, then consecutively to 2
immersion cycles.
<Temperature cycle>
Cycle time:500 cycles
<Immersion cycle>
Cycle time:2 cycles
Pre-treatment : Capacitor should be stored at
1252C for 1 h, and apply the
AC4000V(r.m.s.) 60s then placed at
*
1
room condition for 242 h
before initial measurements.
(Do not apply to Char. SL)
Post-treatment : Capacitor should be stored for 4 to
24 h at *
1
room condition.
Capacitance
change
Char. SL : Within 5%
Char. B : Within 10%
Char. E : Within 20%
D.F. Char. SL : 2.5% max.
Char. B, E : 5.0% max.
I.R.
3000M min.
Dielectric
strength
Per item 3
*
1
"room condition" Temperature: 15 to 35C, Relative humidity: 45 to 75%, Atmospheric pressure: 86 to 106kPa
*
2
"C" expresses nominal capacitance value(pF)
Step
Temperature(C)
Time
1 -40+0/-3 30 min
2 Room temp. 3 min
3 +125+3/-0 30 min
4 Room temp. 3 min
Front time (T1) = 1.2μs=1.67T
Time to half-value (T2) = 50μs
Step
Temperature(
C)
Time
Immersion
water
1 +65+5/-0 15 min
Clean
water
2
0
3
15 min
Salt
water
