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3. Insulation resistance measurement
Rated V
50 V
100 V
125 V
Range
4/40/100
4/40/200
4/40/250
(auto-ranging)
MΩ
MΩ
MΩ
4 MΩ: 0.000 - 4.199 MΩ/ 40 MΩ: 3.60 - 41.99 MΩ
Display
100 MΩ:
200 MΩ:
250 MΩ:
range
36.0 ‒
36.0 ‒
36.0 ‒
104.9 MΩ
209.9 MΩ
262.4 MΩ
O v e r - r a n g e
>104.9
>209.9
>262.4
display
MΩ
MΩ
MΩ
Open-circuit V
100 - 110 % of rated measurement voltage
Short-circuit A
Rated current
@0.05 MΩ
@0.1 MΩ @0.125 MΩ @0.25 MΩ
0.100 -
0.100 ‒
0.100 ‒
10.00 MΩ
20.00 MΩ
25.00 MΩ
10.01 -
20.01
25.01 -
100.0 MΩ
-200.0 MΩ
250.0 MΩ
0.050 - 0.099 MΩ: ±2%±4dgt
0.000 - 0.049 MΩ: ±2%rdg±6dgt
-----
Max. capacitive load: 1 uF: max. discharge value within a defined time
(10 sec.) after a test. (IEC61010-2-034)
Measurement capacitive load: 2 uF, capacitive load which falls within the
va ri a t i o n s (±10 %) a t c a p a c i t i v e l o a d
measurement test specified in IEC 61557-2.
V oltage measurements on 20 GΩ and 40 GΩ ranges can be turned on/ off.
* 1
Please see 8-4 20G/ 40GΩ range in this manual.
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15
10
20
5
25
0
30
250 V
500 V
1000 V
4/40/400/2000
4/40/400/4000
4/40/400
MΩ/20 GΩ
MΩ/40 GΩ
*1
/500 MΩ
(20GΩ Range:
(40 GΩ Range:
3552/3552BT only)
3552/3552BT only)
400 MΩ: 36.0 - 419.9 MΩ
2000 MΩ:
4000 MΩ:
500 MΩ:
360 - 2099 MΩ
360 - 4199 MΩ
360 - 524
20 GΩ:
40 GΩ:
MΩ
1.80 - 20.99 GΩ
3.60 - 41.99 GΩ
KEW3551
>2099 MΩ
>4199 MΩ
KEW3552/3552BT
>524
While 20/ 40GΩ Range is enabled:
MΩ
(if disabled, the display is the same
as KEW3551)
>20.99 GΩ
>41.99 GΩ
within 1.5 mA
1.0 - 1.1 mA
@0.5 MΩ
@1 MΩ
0.100 -
0.100 - 500 MΩ 0.100 -1000 MΩ
50.0 MΩ
±2%rdg±2dgt
50.1 -500
501 ‒ 2000 MΩ 1001 - 4000 MΩ
MΩ
±5%rdg
2.00 - 20.00 GΩ 4.00 - 40.00 GΩ
±5%rdg±0.4% per GΩ
̶ 8 ̶
*1
*1
sales@calcert.com
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