DIGITAL INSULATION/CONTINUITY TESTERS

KEW 3021A/3022A/3023A

One-second High-speed
Result Display

Photo: KEW 3021A

Test lead 7103A with remotecontrol switch (as standard)

KEW 3021A 125/250/500/1000V
KEW 3022A 50/100/250/500V

KEW 3023A 100/250/500/1000V
 3 functions in one unit, insulation test with 4 voltage

ranges, continuity test, AC voltage measurement.
 With 2.5 times faster testing speed than the preceding
models!
 200mA measuring current on continuity testing.
 Comparator function with PASS / FAIL and buzzer.
 0Ω adjustment at continuity measuring range.
 Memory function up to 99 data.
 Backlight LCD provides easy reading in dark locations.
 Safety lock system prevents an erroneous operation

on 500 and 1000 Volt ranges.

● KEW 3021A/3022A/3023A Specifications
3021A
Insulation resistance
Test voltage
Measuring range(Auto range)
First Effective
Measuring range
Mid-scale value
Accuracy
Second effective
measuring range
Accuracy
Rated current
Short circuit current
Ω/Continuity
Auto range
Accuracy
Output Voltage onopen circuit
Short circuit current
Fuse
Voltage measurement
Range
Accuracy
Other function

125V4.000/40.00/200.0MΩ

250V

3022A
500V

1000V

50V
100V
4.000/40.00/200.0MΩ

4.000/40.00/400.0/2000MΩ

0.2 - 20MΩ 0.2 - 40MΩ 0.2 - 200MΩ 0.2 - 1000MΩ
5MΩ

20.01 200.0MΩ

±2%rdg±6dgt

50MΩ40.01 200.1 2000MΩ
2000MΩ
±5%rdg±6dgt

1001 2000MΩ

3023A
250V
500V
4.000/40.00/400.0/2000MΩ

100V
4.000/40.00/200.0MΩ

250V

1000V
500V
4.000/40.00/
400.0/2000MΩ

0.2 - 40MΩ 0.2 - 200MΩ 0.2 - 20MΩ 0.2 - 40MΩ 0.2 - 200MΩ 0.2 - 1000MΩ

0.2 - 20MΩ5MΩ±2%rdg±6dgt
0.110 - 0.199MΩ
40.1 20.01 - 200.0MΩ
2000MΩ
±5%rdg±6dgt
DC1.0 - 1.2mA
DC1.5mA MAX

50MΩ

200.1 2000MΩ

5MΩ

20.01 200.0MΩ

±2%rdg±6dgt

50MΩ40.01 200.1 2000MΩ
2000MΩ
±5%rdg±6dgt

1001 2000MΩ

40.00/400.0 Ω±2%rdg±8dgt
5V±20%
DC220±20mA
Quick acting ceramic fuse 0.5A/600V (φ6.35 × 32mm)◦Data hold◦Live circuit warning

GeneralSafety standard
Dimensions / Weight
Power source
Accessories
Optional◦Zero Ω ADJ.
◦Auto power off

AC 20-600V(50/60Hz) DC ±20-600V±3%rdg±6dgt◦Auto discharge◦Bar graph display◦Battery alarm◦Backlight◦Memory◦Safety lock◦Comparator◦Remote measurement

IEC 61010-1 CATⅢ 600V IEC61557-1,2,4 IEC61326-1、IEC 60529 (IP40)
105(L) × 158(W) × 70(D)mm / 600g approx. including batteries
R6/LR6(AA)(1.5V) × 6
7150A (Test lead with remote control switch set), 8923 (Fuse 0.5A/600V), 9121 (Shoulder strap), R6 (AA) × 6, Instruction Manual
7115 (Extension Probe), 8016 (Hook type prod), 9089 (Carrying case)Comparator Function

When measured 1MΩ

Select and set the standard resistancevalue in each measuring range, andcompare it with readings.
Notice the result of comparison by theor
sign on the display, andby buzzer sound in same time.
orBuzzer can be set either forat your choice.

sign withbuzzer soundSet the standard
value at 10MΩsign indicatedSet the buzzer to bebeeped for FAIL sign
When measured 100MΩ

● Accessories 7150A[Test lead with remote control swich set]

● Optional

8016
Hook type prod

7115
7103A
Test lead with remotecontrol switch

7161A
Flat test prod

7131B
Safetycrocodile clip

8017
Extensionprod9120
Cord case

Extension Probe

9089
Carrying case

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

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

KEW 3021A/3022A/3023A-1E JAN 18 AD