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Table of Contents
Related Manuals for Top Tronic T1805
Summary of Contents for Top Tronic T1805
- Page 1 T1805 EARTH RESISTANCE TESTER INSTRUCTION MANUAL...
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Page 2: Table Of Contents
INDEX Page 1. INTRODUCTION........2. SAFETY NOTES........3. FEATURES..........4. SPECIFICATIONS........5. MEASURING METHODS....... 6. MAINTENANCE........ -
Page 3: Introduction
1. INTRODUCTION NOTE This meter has been designed and tested according to IEC Publication 348, Safety Requirements for Electronic Measuring Apparatus, IEC-1010 (EN 61010) and other safety standards. Follow all warnings to ensure safe operation. WARNING READ "SAFETY NOTES" (NEXT PAGE) BEFORE USING THE METER. -
Page 4: Safety Notes
2. SAFETY NOTES ● Read the following safety information carefully before attempting to operate or service the meter. ● Use the meter only as specified in this manual; otherwise the protection provided by the meter may be impaired. ● Rated environmental conditions: (1). -
Page 5: Features
3. FEATURES ● High quality Taut Band movement. ● Capable of measuring earth voltage. ● 2mA measuring current permits earth resistance test without tripping earth leakage current breakers in the circuit under test. ● In addition to the facility for precision measurement, test leads for simplified two wire measuring system also supplied as standard accessories. -
Page 6: Specifications
4. SPECIFICATIONS ● Measurement System: Earth Resistance by constant current inverter 820Hz, 2mA approx. ● Measuring Ranges: Earth resistance:10/100/1000Ω Earth voltage: 0~30V AC(40~500Hz) ● Accuracy: Earth Resistance: 3% of full scale Earth voltage: 2.5% of full scale ● Safety standard: IEC-1010(EN 61010), Installation Category Ⅲ... -
Page 7: Measuring Methods
5. MEASURING METHODS BEFORE PROCEEDING WITH MEASUREMENT, READ THE SAFETY NOTES ON PAGE 3. Check to see if the meter pointer is adjusted exactly to the mechanical zero position of the W or V scale. If the pointer is off the zero position, turn the zero adjust screw with a screwdriver. - Page 8 (2) Rotary the function switch to suitable range then press the pushbutton to test and take the reading. Simplified earth resistance measurement method: (1) This method is recommended where an earth resistance higher than 10W is measured or where it is not possible to drive auxiliary earth spikes. An approximate value of earth resistance can be obtained by the two wire system where is shown in Fig.2.
- Page 9 (5) Rx = Re -re Rx = True Earth Resistance Re = Indicated Valuere re = Earth Resistance of Earth Electrode. (6) Since measuring current is as low as 2 mA, the earth leakage breaker (ELCB) does not trip even if the earth side of the commercial power supply with an ELCB is used.
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Page 10: Maintenance
6. MAINTENANCE ● Battery Replacement: When setting the function switch to "BATT CHECK" Position and the meter pointer NOT staying in OK Area, replace the batteries as follows: (1) Disconnect the test leads from the instrument and turn off the power. (2) Use a screwdriver to unscrew the screw on back cover then slide the cover, take out the batteries and replace with new batteries Type SUM-3.
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