Kyoritsu Digital Insulation Tester
Kyoritsu Digital Insulation Testers KEW 3005A and KEW 3552 are professional electrical testing instruments used for insulation resistance, continuity and voltage testing. Both models support insulation test voltages up to 1000V and are suitable for cables, motors, electrical panels, industrial equipment, installation and maintenance applications.
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A. Product Overview
The Kyoritsu KEW 3005A and KEW 3552 are digital insulation and continuity testers designed for electrical safety testing and preventive maintenance.
The KEW 3005A provides 250V, 500V and 1000V insulation test voltages with insulation resistance measurement up to 2000MΩ. It also supports continuity testing, AC voltage measurement, auto null, live circuit warning and automatic discharge.
The KEW 3552 is a more advanced insulation tester with six insulation test voltage selections from 50V to 1000V. It can measure insulation resistance up to 40GΩ and also supports continuity, AC voltage and DC voltage measurement. It includes memory functions for storing test results.
Both instruments are suitable for professional electricians, maintenance teams and electrical testing applications.
B. Working Principle
An insulation tester applies a controlled DC test voltage across the insulation of an electrical component, cable, motor or circuit.
The instrument measures the small amount of current flowing through the insulation and calculates the insulation resistance.
A high insulation resistance generally indicates good insulation condition, while a low insulation resistance can indicate moisture, contamination, insulation deterioration or electrical leakage.
For continuity testing, the instrument passes a test current through the conductor to check whether the electrical path is complete and has acceptable resistance.
The KEW 3005A and KEW 3552 can therefore help technicians evaluate both insulation condition and conductor continuity.
C. Why It Is Used
Kyoritsu Digital Insulation Testers are used to identify insulation deterioration before it results in electrical failure.
They are commonly used for:
- Checking insulation resistance of electrical cables
- Testing motors and generators
- Checking industrial electrical panels
- Testing electrical wiring during installation
- Preventive maintenance of electrical equipment
- Detecting insulation leakage
- Checking conductor continuity
- Electrical commissioning work
- Troubleshooting industrial machinery
- Verifying insulation after repair or rewiring
Regular insulation testing can help reduce equipment failures, electrical leakage and unexpected breakdowns.
D. Suitable Buyers
The Kyoritsu KEW 3005A and KEW 3552 are suitable for:
- Electrical contractors
- Industrial electricians
- Electrical maintenance engineers
- Factory maintenance departments
- Electrical testing companies
- Control panel manufacturers
- Motor repair workshops
- Cable manufacturers and installers
- Machine manufacturers
- Facility management companies
- HVAC maintenance professionals
- Electrical commissioning engineers
- Power distribution maintenance teams
- Industrial automation companies
Frequently Asked Questions
1. What are the Kyoritsu KEW 3005A and KEW 3552 used for?
They are used for insulation resistance testing, continuity testing and electrical voltage measurement.
2. What insulation test voltages are available on the KEW 3005A?
The KEW 3005A provides 250V, 500V and 1000V insulation test voltages.
3. What test voltages are available on the KEW 3552?
The KEW 3552 provides six selectable insulation test voltages ranging from 50V to 1000V.
4. What is the maximum insulation resistance range of the KEW 3005A?
The KEW 3005A can measure insulation resistance up to 2000MΩ.
5. What is the maximum insulation resistance range of the KEW 3552?
The KEW 3552 can measure insulation resistance up to 40GΩ.
6. Can these testers be used for motor insulation testing?
Yes. Both models are suitable for checking the insulation condition of motors and other electrical equipment.
7. Can they be used for cable insulation testing?
Yes. They are commonly used to test insulation resistance in electrical cables and wiring systems.
8. Do the KEW 3005A and KEW 3552 support continuity testing?
Yes. Both models support continuity testing.
9. Can the KEW 3552 measure AC and DC voltage?
Yes. The KEW 3552 supports both AC voltage and DC voltage measurement.
10. Does the KEW 3552 have memory function?
Yes. The KEW 3552 includes a memory function for storing measurement results.
11. Does the KEW 3005A have automatic discharge?
Yes. The KEW 3005A includes an automatic discharge function after insulation resistance testing.
12. Which model is suitable for advanced insulation testing?
The KEW 3552 is more suitable for advanced applications because it offers more selectable test voltages, insulation resistance measurement up to 40GΩ and memory functionality.
13. Which model is suitable for general electrical maintenance?
The KEW 3005A is suitable for routine electrical maintenance, cable testing, motor testing and electrical installation work.
14. Can these insulation testers be used for industrial panels?
Yes. Both models can be used during installation, commissioning, troubleshooting and preventive maintenance of industrial electrical panels.
15. Who manufactures the KEW 3005A and KEW 3552?
Both models are manufactured by Kyoritsu, a manufacturer of professional electrical testing and measuring instruments.