Key facts
- Manuals
- 5
- Models
- 1
- Languages
- ZH
- Last added
- 2026-10-01
KEW models by category
Featured KEW manuals

KEW 3125 A/3025A High Voltage Insulation Resistance Tester User Manual
The KEW 3125 A/3025A is a high‑voltage insulation resistance tester designed to meet IEC 61010 safety standards. The manual provides safety warnings, product features, technical specifications, instrument layout, and step‑by‑step testing procedures.
It also includes instructions for battery replacement, accessory usage, and proper disposal according to WEEE regulations. Users are guided on how to connect test leads, perform insulation and voltage measurements, and utilize functions such as automatic discharge, backlight, and auto‑shutdown. This manual is written in Chinese.
Covers: Safety Warnings · Product Features · Technical Specifications · Instrument Layout · Starting a Test · Testing Procedures

KEW 3121A/3122A/3123A Battery High Voltage Insulation Resistance Tester User Manual
This manual describes the KEW 3121A, 3122A and 3123A portable high‑voltage insulation resistance testers. It begins with safety warnings that must be read before any measurement, including keeping the device off‑line, avoiding open battery covers while powered, and not testing in flammable environments.
The document then details the instrument’s features, technical specifications, layout of controls, step‑by‑step operating procedures, battery replacement, how to secure the instrument in its hard case, and cleaning recommendations. Accessories such as the carrying case, test leads, grounding and protection wires, and optional probes are also listed. This manual is written in Chinese.
Covers: Safety Warnings · Features · Technical Specifications · Instrument Layout · Operation Instructions · Battery Replacement

KEW 3125A/3025A High Voltage Insulation Resistance Tester User Manual
This manual explains safe use of the KEW 3125A/3025A high‑voltage insulation resistance tester, covering IEC 61010 safety standards, required protective measures, and proper handling to avoid electric shock or equipment damage.
It details the instrument’s functions such as automatic discharge, back‑light, bar‑graph display, DAR/PI measurements, and auto‑shutdown, along with technical specifications, battery information, accessories, and end‑of‑life disposal guidance. This manual is written in Chinese.
Covers: Safety Warnings · Features · Technical Specifications · Instrument Layout · Starting Test · Testing

Kyoritsu 1018H Card Multimeter User Manual
The Kyoritsu 1018H is a compact, battery‑operated multimeter designed for voltage, resistance, diode, continuity, capacitance, frequency and duty‑cycle measurements. It complies with IEC 61010‑1 safety standards and includes automatic ranging, data hold, and auto‑shutdown features.
The manual provides safety warnings, symbol explanations, detailed operating procedures for each measurement function, battery replacement instructions, cleaning guidelines, and full technical specifications such as measurement ranges, accuracy, dimensions, and environmental limits. This manual is written in Chinese.
Covers: Safety Warnings · Symbol Definitions · Key Features · Technical Specifications · Operation Instructions · Measurement Functions
Latest KEW manuals
KEW 3125 A/3025A High Voltage Insulation Resistance Tester User Manual
User Manual 17 pages · 927 KB · ZHUser manual for the KEW 3125 A/3025A high‑voltage insulation resistance tester, covering safety, operation, specs and maintenance.
KEW 3121A/3122A/3123A Battery High Voltage Insulation Resistance Tester User Manual
User Manual 9 pages · 533 KB · ZHThe KEW 3121A/3122A/3123A battery‑powered high‑voltage insulation resistance tester user manual provides safety warnings, specifications, operation steps…
KEW 3125A/3025A High Voltage Insulation Resistance Tester User Manual
User Manual 17 pages · 957 KB · ZHThe KEW 3125A/3025A manual provides safety warnings, features, specifications, operation steps, battery replacement, and disposal instructions for the…
Kyoritsu 1018H Card Multimeter User Manual
User Manual 8 pages · 327 KB · ZHUser manual for the Kyoritsu 1018H handheld multimeter with safety instructions, operation guide, and specifications.
KEW 1061/1062 Digital Multimeter User Manual
User Manual 12 pages · 1.3 MB · ZHUser manual for the KEW 1061/1062 digital multimeter covering specifications, safety, operation, and maintenance.
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in KEW manuals
What does the automatic shutdown feature do?
If the instrument is idle for 10 minutes after a test, it automatically powers off to conserve battery life.
From: KEW 3125 A/3025A High Voltage Insulation Resistance Tester User Manual
What is the maximum rated voltage for each model?
The KEW 3121A is rated at 2500 V, the 3122A at 5000 V, and the 3123A at 10000 V.
From: KEW 3121A/3122A/3123A Battery High Voltage Insulation Resistance Tester User Manual
How can I check the battery condition?
Set the function switch to BATT.CHECK and press the test switch; if the pointer stays in the BATT.GOOD area, the battery is good.
From: KEW 3121A/3122A/3123A Battery High Voltage Insulation Resistance Tester User Manual
How long does the battery last in the 3125A model?
Approximately 25 hours when measuring at the 5000 V range with a 100 MΩ load.
From: KEW 3125A/3025A High Voltage Insulation Resistance Tester User Manual
What is the automatic shutdown feature?
The instrument powers off automatically after 10 minutes of inactivity.
From: KEW 3125A/3025A High Voltage Insulation Resistance Tester User Manual
What safety precautions must be observed when measuring voltage?
Do not measure on circuits with line voltage above AC 300 V, avoid flammable atmospheres, keep hands away from test leads, and never open the battery compartment while measuring.
