Kikusui TOS8870A, Operation Manuals, Page: 50 / 56

38
SPECIFICATIONS
TOS8870A
Table 7-2
Table 7-3
Test Voltage Waveform
When an AC output voltage is applied to a capacitive load, it is possible that the voltage becomes
higher than that when in the no-load state due to the capacitance of the load. Moreover, when the
capacitance of the load is voltage dependent (typical examples are ceramic capacitors), the voltage
waveform may be distorted. When the test voltage is 1.5 kV, however, effects caused by a capaci-
tance of 1000 pF or less are negligible.
7.2 Insulation resistance Tester
Table 7-4
Ambient tem-
perature
Test current I
(mA)
Suspension time
Maximum test
time
t ≤ 40 ° C
25.5
<
I
≤
100 Test time or longer 30 minutes or less
I ≤ 25.5 Not required
Continuous test
possible
Output voltage 1 kV 2 kV 3 kV 4 kV 5 kV
Test alone (without leadwires) 4
µ
A 8
µ
A 12
µ
A 16
µ
A 20
µ
A
When 350mm long leadwires are hung in air 6
µ
A 12
µ
A 18
µ
A 24
µ
A 30
µ
A
When the accessory leadwire (TL01-TOS) are used 20 µ A 40 µ A 60 µ A 80 µ A 100 µ A
INSULATION RESISTANCE TESTER
Measuring Voltage
500 V or 1 000 V
DC, negative polarity (two ranges)
Measuring terminal voltage 0 % to + 5 % of rated measuring voltage (At rated measuring current or
less)
Output current Rated measuring current 1.0 mA
Short circuit current 12 mA or less
Effective Measuring
Ranges 500 V range 1 M Ω to 1 000 M Ω
1 000 V range 2 M Ω to 2 000 M Ω
Values center of scale 500 V range 20 M Ω
1 000 V range 50 M Ω
Accuracy 1st effective measuring range : ± 5 % of the indicated value
2nd effective measuring range : ± 10 % of the indicated value
*1
*1. At 25 ˚ C ± 10 ˚ C
The 1st effective measuring range is from 1/1000 to 1/2 of the maximum effective scale value. The 2nd effective
measuring range is from the above to the maximum effective scale value.
Judgment of Test Result Judgment Window comparator system (mutually independent settings of high
limit and low limit)
PASS-FAIL
judgment FAIL judgment when measured resistance is smaller than low limit ref-
erence value.
FAIL judgment when measured resistance is larger than high limit refer-
ence value.
When FAIL judgment is made, output is cutoff and FAIL alarm is gen-
erated.
If no FAIL judgment is made after preset period has elapsed, PASS sig-
nal is generated.
Limit reference value set-
ting range Low and high limit reference values can be set at any points within the
effective measuring range of the Tester.
Accuracy of judgment 1st effective measuring range : ± 10 % of set value
2nd effective measuring range :
±
15 % of set value
*1
Waiting-time for judgment Approx. 0.3 s
Test time Timer :0.5 s to 99.9 s (
×
0.1 range)
±
50 ms
1 s to 999 s (
×
1 range)
±
0.5 s