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Summary of Contents for Kewtech KT31
- Page 1 KEWTECH KT31 digital multi function tester Instruction manual...
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Page 2: Table Of Contents
Testing Insulation Tests Continuity Testing (Resistance Tests) Servicing & Calibration Congratulations on purchasing this Kewtech model KT31 Analogue Insulation/Continuity Tester. This unit has been designed to comply with the current lEE Regulations and International Regulations. By using the latest technology this Tester will give accurate and reliable results when used in accordance with these operating instructions. -
Page 3: Safety Notice
Tester. 1.1 This instrument must only be used by a competent trained person and in strict accordance with the instructions. Kewtech will not accept liability for any damage or injury caused by misuse or non-compliance with instructions or safety procedures. -
Page 4: Features And Principles Of Measurement
Should this be observed, the test should be repeated to obtain a correct reading. If in doubt always contact Kewtech. 1.9 Never assume an installation circuit is not live. Confirm it is de- energised before commencing testing. - Page 5 low values of resistance between two points in an electrical cir- cuit. In this mode the instrument acts as a low voltage current source. The resistance is calculated from the measurement of the voltage and the current through the conductor. Careful connection to the circuit under test is essential to avoid mea- surement errors.
- Page 6 Possible insulation resistance measurement errors may be caused by the circuit under test being wet and/or dirty. Errors may also occur when testing large installations where the insu- lation resistances may effectively be in parallel. All fuses in or circuit Equipment disconnected breakers closed Mains switch open...
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Page 7: Layout Diagram
Layout Diagram 1 Crocodile Clip 2 Prod 3 Ohms Zero Adjust 4 Test Button 5 Meter Movement Zero Adjust 6 Live Circuit Warning Lamp 7 Light Switch 8 Power-on Indication Lamp 9 Range Switch... -
Page 8: Specifications
Specifications Insulation Resistance Measurement Specification Test Voltage 250V 500V 1000V Measuring Ranges 0 -100M Ω 0 -200M Ω 0 -400MΩ Mid-scale Value 1 MΩ 2 MΩ 4MΩ Nominal Output 250V DC min. 500V DC min. 1000V DC min. Voltage (UN) at 0.25MΩ... - Page 9 Insulation Resistance Operating Error Range Operating Range Compliant with EN 61557-2 Operating Error 250V 0.1MΩ to 10MΩ 500V 0.2MΩ to 20MΩ 1000V 0.4MΩ to 40MΩ Continuity Resistance Operating Error Range Operating Range Compliant with EN 61557-4 Operating Error Ω x 1 0.2Ω...
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Page 10: Testing
500V Range 0.5MΩ approx.1200 times or more 1000V Range 1MΩ approx. 600 times or more Ωx 1 Range 1Ω approx. 800 times or more Applied Standards Operation: EN 61557-1/2/4 Safety: EN61010 Cat.III 300V Protection: IEC60529 (IP40) Accessories SL20 ACC020 Test Leads Test Lead Pouch Testing - General Preparation for measurements - without pressing the test but-... -
Page 11: Insulation Tests
5-2 Test Leads Check Connect the leads to the Tester, switch to the Ω x 1 function and press and turn the test button to lock it down. When the leads are connected together, the pointer should move from the oo position towards the 0 position on the green ohms scale. If not, the leads or fuse may be faulty (or you need to adjust the ohms zero knob to zero the pointer). - Page 12 General Lock down feature - for hands free operation, press and turn the test button. Warning: The circuit must not be live-conduct initial checks first before using this feature. Otherwise damage will result. a) Using the Tester in this mode, may leave the circuits under test charged up when conducting insulation tests due to capacitance.
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Page 13: Servicing & Calibration
Ensure that it is perfectly dry before switching on. If this tester should fail to operate correctly, return to Kewtech marked for the attention of the Service Department, stating exact nature of fault. - Page 14 Case, strap, shoulder-pad and test lead pouch assembly Assemble the shoulder strap through the case lugs and the test lead pouch in the following sequence: 1 Pass the strap down through the first lug, under the case and up through the other lug. 2 Slide the shoulder pad onto the strap 3 Feed the strap down through...
- Page 15 Distributor Kewtech Corporation Limited 76 St. Catherine’s Grove Lincoln LN5 8NA KEWTECH www.kewtechcorp.com 92-1613 04-03...
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