Products of Kyoritsu

Kyoritsu (KEW): Electrical Test Equipment – Multimeters, Insulation Testers & Clamp Meters

Kyoritsu Electrical Instruments Works – brand KEW – is a Japanese manufacturer of professional electrical test equipment. At Lieske, electricians, electrical contractors and industrial businesses find the full KEW range: multimeters, insulation testers, clamp meters and test instruments for commercial and industrial electrical installations.

1949

Founded

Japan

Country of origin

CAT IV

Max. measurement category

IEC / JIS

Standards compliance

Kyoritsu / KEW – Japanese Precision Test Equipment for Professional Electrical Work

Kyoritsu Electrical Instruments Works was founded in 1949 in Japan and is, under the KEW brand, one of the best-known manufacturers of electrical test equipment in Asia and Europe. The company develops and manufactures multimeters, insulation testers, earth resistance meters, clamp ammeters and switchgear measurement instruments for professional use.

KEW instruments are characterised by high measurement categories up to CAT IV 600 V and CAT III 1000 V, making them suitable for work on main distribution boards, switchgear and the supply network. Insulation meters in the KEW 3121/3122 and 3502 series are established throughout Europe among electrical installation engineers and test technicians.

All KEW test instruments comply with IEC and JIS standards, are CE-conformant and tested by TÜV, KEMA and equivalent bodies. The portfolio is particularly suited to electricians, industrial electrical engineers, maintenance technicians and test laboratories.

◆ Certifications & Standards

✓ IEC 61010-1 (Safety)

✓ IEC 61010-2-030 (Test instruments)

✓ IEC 61557 (Insulation testing)

✓ CAT IV 600 V / CAT III 1000 V

✓ CE conformity

✓ RoHS compliant

► Kyoritsu / KEW Product Families at a Glance

★ Multimeters Digital handheld multimeters for voltage, current, resistance, capacitance and frequency. KEW series 1021R, 1051, 1061 for general and industrial applications up to CAT IV 600 V. True-RMS measurement, bargraph display and data memory for field service and maintenance.		★ Insulation Testers Insulation resistance meters for cables, motors, transformers and switchgear. KEW 3121B, 3122B and 3502 with test voltages from 250 V to 5000 V. Continuous and step-voltage measurement, PI/DAR calculation per IEC 60364 and relevant installation standards.

★ Clamp Meters Current clamps for AC and DC measurement without breaking the circuit. KEW clamp series 2001A, 2046R, 2200 for measurements up to 2000 A AC. True-RMS, power measurement and auto-ranging. For switchgear measurement, energy audits and preventive maintenance.		★ Earth Testers & Special Instruments Earth resistance meters (KEW 4105A, 4200), power analysers, phase indicators, phase rotation meters and cable tracers for complete electrical testing to IEC 60364 and installation standards.

► Application Areas in Electrical Trades and Industry

⚡ Electrical Installation Voltage, current and insulation measurements during new installations and testing per IEC 60364 – for electricians, installers and electrical contractors in daily operations.	⚡ Industrial Maintenance Preventive maintenance on motors, transformers, cables and drives – insulation measurement as an early warning system for impending failures before costly downtime occurs.	⚡ Energy Auditing Current measurements with clamp meters for energy audits per ISO 50001 – load profile analysis, power measurement and reactive power detection without breaking circuits.

⚡ Photovoltaics & Renewables Insulation measurements on PV systems, DC current measurements and earth tests – appropriate KEW instruments for safe testing of solar installations and inverters.	⚡ Control Cabinet Construction Multimeters and clamp meters for control cabinet assembly, commissioning and acceptance testing – compact form factor for use in confined installation situations.	⚡ Test Laboratories & Certification High-precision insulation and earth testers for test laboratories, certification bodies and expert witnesses – reproducible results and calibration capability.

► Why Kyoritsu / KEW via Lieske?

✓ CAT IV Safety Rating

KEW test instruments are designed for the highest measurement category CAT IV 600 V – safe working on main distribution boards and in the supply network where lower categories do not provide adequate protection.

✓ Insulation Testing Specialist

Kyoritsu offers one of the broadest insulation meter product lines – from simple 250 V instruments up to 10 kV high-voltage testers for industrial cable testing.

✓ Japanese Manufacturing Quality

Development and manufacturing in Japan to IEC and JIS standards – robust, long-lived test instruments for daily professional use on construction sites and in industrial plants.

✓ True-RMS & Data Memory

Modern KEW instruments measure True-RMS even with non-sinusoidal signals and store readings internally – for documentation, acceptance test records and trend analysis.

► Kyoritsu / KEW Product Categories at Lieske

Measurement Technology ◆ Multimeters ◆ Insulation Testers ◆ Current Measurement ◆ Voltage Measurement ◆ Phase Rotation Meters ◆ Measurement Accessories ◆ Cable Testers

► Frequently Asked Questions about Kyoritsu / KEW Test Instruments

What does measurement category CAT IV mean on Kyoritsu instruments?

CAT IV is the highest measurement category per IEC 61010 and refers to measurements at the supply network, main distribution boards and meter panels with potentially very high transient voltages. CAT IV instruments are designed for these applications and offer the greatest protection against overvoltage damage. For standard electrical installation work, CAT III is typically sufficient.

Which KEW insulation tester is suitable for testing to IEC 60364?

The KEW 3121B or 3122B are ideal for insulation testing per IEC 60364 Part 6. They measure at test voltages of 250, 500 and 1000 V DC, display insulation resistance directly and optionally calculate the Polarisation Index (PI) and Dielectric Absorption Ratio (DAR).

Can KEW clamp meters also measure DC current?

Yes, certain KEW models such as the KEW 2046R support DC current measurement using Hall sensor technology – important for PV systems, battery systems and DC drive applications. For pure AC current measurements, more economical AC-only clamp models are available. The product description specifies the measurement range for each model.

Kyoritsu / KEW Test Instruments for Your Business – Request a Quote

Our B2B team advises on instrument selection, volume pricing and calibration options for KEW test equipment in commercial use.

► Request Quote Now

Categories with products from Kyoritsu

Electronics ➤ Measurement ➤ Ammeters ( 4 )
Electronics ➤ Measurement ➤ Energy Meters ( 2 )
Electronics ➤ Measurement ➤ Installation Testers ( 2 )
Electronics ➤ Measurement ➤ Resistor Measuring ( 1 )
Electronics ➤ Measurement ➤ Rotary Field Meters ( 1 )

Kyoritsu 5001 Leakage current data logger

Lieske Part No.: 767011

425,79 EUR

≈ £367.03 | ≈ $484.97