This document is a battery charger user manual. It describes how to use the charger, precautions and safety warnings.
This is the user manual for the KEWTECH KT72, a hand-held battery-powered appliance tester designed to check electrical safety of Class I and Class II appliances. It features three main test functions: protective conductor resistance, insulation resistance, and substitute leakage current. The device displays results on an LCD and uses LEDs to indicate pass/fail status. Safety warnings are emphasized throughout, including precautions for high voltage and proper handling.
The KT72 is compliant with the IEE Code of Practice for In-service Inspection and Testing of Electrical Equipment: 2007. It includes features like auto-testing, selectable test voltages (250V or 500V), and a null function for test lead resistance. The manual provides detailed instructions for operation, layout, and interpretation of test results, including display messages and threshold values for each test type.
| Test Current (Earth Continuity) | 200mA DC nominal |
|---|---|
| Insulation Test Voltage | 250V DC or 500V DC |
| Leakage Current Test Range | 0.1~12.00mA rms, 50Hz AC |
| Earth Continuity Threshold (Class I) | 0.1Ω |
| Insulation Resistance Threshold (Class II) | 2MΩ |
| Accuracy (Earth Continuity) | ± (3%rdg+5dgt) |
| Accuracy (Insulation Resistance) | ± (2%rdg+3dgt) |
Do not apply voltage to test sockets, use only KEWTECH-approved test leads, and never touch the device under test during testing. Always read safety warnings and follow instructions carefully.
It supports three main functions: protective conductor resistance (Class I and Extension Lead), insulation resistance (Class I and Class II), and substitute leakage current test.
Green indicates pass, red indicates fail, and orange indicates pass for appliances with extended mains leads.
It complies with the IEE Code of Practice for In-service Inspection and Testing of Electrical Equipment: 2007 and safety standards IEC/EN61010-1 and IEC/EN61010-031.