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Summary of Contents for Kyoritsu Electrical Instruments Works KEW 4105A
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Page 2: Table Of Contents
CONTENTS 1. Safty Precautions ○ The instrument is designed, manufac 1. Safety Precautions ..................1 condition in accordance with the follow 2. Features ..................... 5 ● IEC 61010-1 Measurement CAT Ill 300 3. Specifications ..................... 6 ● IEC 61010-2-030 4. Layout Diagram ..................9 ●... -
Page 3: Safety Precautions
1. Safty Precautions ○ The instrument is designed, manufactured, tested and shipped in prime ..............1 condition in accordance with the following standards..............5 ● IEC 61010-1 Measurement CAT Ill 300V Pollution Degree 2 ..............6 ● IEC 61010-2-030 .............. - Page 4 CAUT DANGER is reserved for conditions and actions that are likely to cause ● Make sure that the test probe are se serious or fatal injury. WARNING is reserved for conditions and actions that can cause the instrument. ●...
- Page 5 CAUTION tions and actions that are likely to cause ● Make sure that the test probe are securely connected to the terminal of onditions and actions that can cause the instrument. ● Be sure to set the range selector switch to the OFF position after use. ditions and actions that can cause minor When the instrument will not be in use for a long period of time, place it in storage after removing the batteries.
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Page 6: Features
O to CAT IV, and called measurement categories. Higher-numbered categories KEW 4105A is an earth resistance tes correspond to electrical environments with greater momentary energy, so lines, in-house wiring system, electrical a... - Page 7 2. Features trical environments, categorized as O to categories. Higher-numbered categories KEW 4105A is an earth resistance tester for testing power distribution ents with greater momentary energy, so lines, in-house wiring system, electrical appliances etc. It also has an earth d for CAT III environments can endure voltage range for earth voltage measurement.
- Page 8 ○ Operating uncertainty Operating uncertainty (B) is an unc operating conditions, and calculated which is an error of the instrument used According to IEC61557, the maximum oper Operating uncertainty in earth resist ＋ ＋ ＋ （ lntrinsic uncertainty ○ The measuring range to keep oper MODEL7127A･･･CAT III 600V (with Alligator Clip) CAT II 600V (with flat test prod）...
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Page 9: Battery Voltage Check
○ Operating uncertainty Operating uncertainty (B) is an uncertainty obtained under the rated operating conditions, and calculated with the intrinsic uncertainty (A), which is an error of the instrument used, and the error (En) due to variations. According to IEC61557, the maximum operating uncertainty should be within ± 30%. Operating uncertainty in earth resistance measurements (IEC61557-5) ＋... - Page 10 M-9121 Shoulder Strap ⑫ ̶ 8 ̶ 1.800.544.2843 www.calcert.com sales@calcert.com...
- Page 11 ⑫ Protective fingerguad ̶ 9 ̶ 1.800.544.2843 www.calcert.com sales@calcert.com...
- Page 12 Alligator clip Flat test bar ※1 Protective fingerguard ※1 Protective fingerguard *1 Protective fingerguard is a part providing protection against electrical shock and ensuring the minimum required air and creepage distances. ̶ 10 ̶ 1.800.544.2843 www.calcert.com sales@calcert.com...
- Page 13 Flat test bar ※1 Protective fingerguard fingerguard providing protection against electrical shock and air and creepage distances. ̶ 11 ̶ 1.800.544.2843 www.calcert.com sales@calcert.com...
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Page 16: Simplified Measurement
② Earth Voltage Measurement 7. Battery Replacement Set the range switch to EARTH VOLTAGE position in the condition of ①. Earth voltage will be indicated on the display. Make sure that the DANG voltage is 3 V or less. ●... - Page 17 7. Battery Replacement RTH VOLTAGE position in the condition of dicated on the display. Make sure that the DANGER ● Never attempt to open the battery compartment cover, if the outer more than 3 V, it may result in excessive e measurement.
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Page 18: Notes On Housing Case & Accessories
8. Notes on Housing Case & Accessories 9. Cautions when using Test 8-1 Case Lid Do not connect the Precision Measurem Case lid can be fit under the housing case while making measurement. potentials exceeding 33Vrms with pea Please use the Simplified Measurement ments. -
Page 19: Cautions When Using Test Leads
e & Accessories 9. Cautions when using Test Leads Do not connect the Precision Measurement Test Leads where electrical ousing case while making measurement. potentials exceeding 33Vrms with peak value of 46V or DC70V. Please use the Simplified Measurement Test Leads for voltage measure- ments. -
Page 20: Before Sending For Service
10. Before Sending for Service 11. Service If this instrument should fail to operate correctly, return it to your nearest If this instrument should fail to operat distributor stating the exact nature of the fault. Before returning the distributors stating the exact nature of the instrument follow the trouble-shooting guide shown below. -
Page 21: Service
ervice 11. Service erate correctly, return it to your nearest If this instrument should fail to operate correctly, return to your nearest ture of the fault. Before returning the distributors stating the exact nature of the fault. ng guide shown below. missing or they are installed incorrect e not installed in the instrument at the time h voltage measurement;...
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