Kyoritsu KEW 3021 Digital Insulation & Continuity Testers

Kyoritsu KEW 3021 DigitalInsulation & Continuity Testers

The Kyoritsu KEW 3021 is a compact, four-range digital insulation and continuity tester engineered for low-voltage installations up to 600 V. Driven by a microprocessor, it delivers selectable DC test voltages (125 V, 250 V, 500 V, 1000 V) for insulation checks and a DC continuity test with up to 200 mA of test current. Its AUTO DISCHARGE feature safely bleeds residual charge from capacitive circuits, while visible and audible live-circuit warnings enhance user safety during operation.

Equipped with a back-lit LCD and 30-segment bar graph, the KEW 3021 provides clear trend indication even in dim environments. It features zero- ADJ to null test-lead resistance, comparator modes with high/low alarms, and onboard memory to store up to 99 insulation readings. A safety interlock (Safety key) prevents accidental selection of higher test voltages, and AUTO POWER OFF conserves battery life after 15 minutes of inactivity.

Weighing just 600 g (including batteries) and outfitted with a neck strap, this tester is ideal for field engineers, electricians, and maintenance teams performing routine insulation audits, continuity checks, and preventive maintenance. Its rugged IP40 housing and quick auto-range functionality streamline inspections on switchboards, motors, transformers, and cable assemblies in industrial or commercial settings.

Features:

• Conforms to IEC 61010-1 (CAT III 600 V) and IEC 61557 series.
• Four insulation test voltages: 125 V, 250 V, 500 V, 1000 V.
• Auto-discharge of capacitive circuits after testing.
• Two continuity ranges (40 , 400 ) with 200 mA test current and buzzer.
• Zero- ADJ. to null test-lead/fuse resistance.
• Data hold (~5 s) and memory (up to 99 readings).
• Back-lit LCD with 30-segment bar graph.
• Comparator with HI/LO alarms (LED and buzzer).
• Live-circuit warning (LED and buzzer).
• Safety key interlock for high-voltage ranges.
• AUTO POWER OFF after ~15 min of inactivity.
• Test lead with remote control switch (no output unless connected).
• Robust IP40 housing, neck strap, user-changeable probes.

Specifications:

Applications:

• Insulation Resistance Testing in Low-Voltage Installations.
• Continuity Verification of Protective Conductors.
• Preventive Maintenance of Industrial Cabling.
• Live-Circuit Safety Checks.
• Motor and Transformer Insulation Audits.
• Switchboard and Panel Integrity Testing.
• Field Commissioning of Electrical Equipment.

Package Contents:

• 1xMODEL 7103 Test lead with remote control switch
• 1xMODEL 7161 Test bar
• 1xMODEL 7131 Safety alligator clip
• 1xMODEL 8017 Extension probe
• 1xNeck strap
• 1xCord case
• 6xR6P (AA) batteries
• 1xInstruction manual

Documents:

IM_3021_3022_3033_92-1635A_E_L

LC_3021_3022_3023_1E