Digital High Voltage Insulation Testers

KEW 3125A / 3025A

Robust & Ergonomic Design!
De Facto Standard High Voltage Insulation Testers!!

KEW 3125A

1TΩ
250V-5000V
KEW 3025A

100GΩ
250V-2500V● Insulation Resistance up to 1TΩ (KEW3125A)● Short-Circuit Current up to 1.5mA● Wide Test Voltage

from 250V to 5000V (KEW3125A)● Diagnosis Function of PI and DAR● Newly-designed alligator clip
● It comes with a tough hard case

● Filter function reduces noise interference forobtaining stable measurement● Large display with Bar Graph indication

and backlight● Live voltage warning● Safety standard IEC61010-1

CAT Ⅳ 300V / CAT Ⅲ 600V

Made in Japan

● KEW3125A / KEW3025A Specifications● Accessories* 3125A only

Insulation resistance
Rated Voltage
Accuracy

250V

500V

1000V

0.0 -100.0MΩ

0.0 - 99.9MΩ
80 - 1000MΩ

±5%rdg±3dgt±5%rdg±3dgt

0.0 - 99.9MΩ 0.0 - 99.9MΩ 0.0 - 99.9MΩ
80 - 999MΩ
80 - 999MΩ
80 - 999MΩ
0.80 - 2.00GΩ 0.80 - 9.99GΩ 0.80 - 9.99GΩ
8.0 -100.0GΩ 8.0 - 99.9GΩ
80 - 1000GΩ
±5%rdg±3dgt ±5%rdg±3dgt ±5%rdg±3dgt±20%rdg(100GΩ or more)

2500V

5000V*

Short circuit current 1.5mA
OutputvoltageAccuracy ±10%
Monitor-10 - +20%

0 - +20%±10%rdg±20V

Voltage measurement
Measuring range

AC:30 - 600V (50/60Hz) DC:±30 - ±600V

Accuracy±2%rdg±3dgt

EVERYTHING YOU NEED.......

Power source

DC12V : LR14/R14 x 8pcs

Applicable standards

IEC61010-1, 61010-2-030 CAT Ⅳ 300V / CAT Ⅲ 600V Pollution degree2,
IEC61010-031, IEC61326-1, 2-2
177(L) x 226(W) x 100(D) mm (Hard case 380(L) x 430(W) x 154(D) mm)

Dimension
Weight3025A:1.7kg approx. 3125A 1.9kg approx. (including batteries)
4kg approx. (including accessories)
7165A(Line probe:3m), 7264(Earth cord:3m), 7265(Guard cord:3m),
8019(Hook type prod), 9180(3025A Hard Case), 9181(3125A Hard Case),
LR14(Alkaline battery size C) x 8, Instruction manual
7168A(Line probe with alligator clip:3m), 7253(Longer line probe with alligator clip:15m),
8302(Adaptor for recorder)

Accessories

Optional● Diagnostic Insulation Tests

PI80197265

4.0 or moreBest

4.0-2.0Good

2.0-1.0Warning

1.0 or less
Bad

● Optional

Stable holding forlarge bolt headM27 Am Xm

Insulation resistance value 10 min. after start
Insulation resistance value 1 min. after start

PICriteria

7264● New alligator clip

Polarization Index

PI=7165ADAR Dielectric Absorption Ratio
DAR=7168A

Line probe withalligator clip(3m)Insulation resistance value 1 min. after start
Insulation resistance value *15 sec. after start

DAR
Criteria

1.4 or moreBest

1.25-1.0Good

1.0 or less
Bad*User-Selectable 15sec. or 30sec. interval● Selection Guide
3025A NEW

MODEL

3125A NEW

3126

3127

3128

7253

Longer line probe withalligator clip(15m)
Voltage range
Max measurement
Short circuit current

250V/500V/1000V 250V/500V/1000V 500V/1000V
2500V
2500V/5000V
2500V/5000V
100GΩ
1TΩ
1TΩ

250V/500V/1000V
2500V/5000V
10TΩ

500V/1000V/2500V
5000V/10000V/12000V
35TΩ

1.5mA

1.5mA

5mA

5mA

5mA

PI











DAR











SV/DD

———

Filter









Capacitance———

Memory/communication———LR14x8LR14x8LR14x8

CAT Ⅳ 300V
CAT Ⅲ 600V
177x226x100

CAT Ⅳ 300V
CAT Ⅲ 600V
177x226x100

CAT Ⅲ 600V
205x125x94

Power source
Measurement categories
Dimension (mm) (L)x (W)x(D)Rechargeable lead Rechargeable leadstorage Battery(12V) storage Battery(12V)
CAT Ⅳ 600V
CAT Ⅳ 600V
208x225x130

330x410x180

8302

Adapter for recorder(Output 1mV/1µA)

Please read the "Safety Warnings" in the instruction manual supplied with the instrument thoroughly and completely

correct use. Failure to follow the safety rules can cause fire, trouble, electrical shock, etc. Therefore, make sure
Safety Warnings : forto operate the instrument on a correct power supply and voltage rating marked on each instrument.

For inquires or orders :2-5-20, Nakane, Meguro-ku, Tokyo, 152-0031 Japan
Phone:+81-3-3723-0131
Fax:+81-3-3723-0152
E-mail:info-eng@kew-ltd.co.jp

In consideration of the environment, soy ink and recycled paper were used in this publication.

The contents of this leaflet are subject to change without notice.

KEW 3025A/3125A-1E Mar. 15 AD