Table of Contents
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Table of Contents
Related Manuals for METREL Earth 2/3
Summary of Contents for METREL Earth 2/3
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Page 1: Instruction Manual
Earth 2/3 MI 2126 Instruction Manual Version 1.0, Code No. 20 750 190... - Page 2 Mark on your equipment certifies that this equipment meets the requirements of the EU (European Union) concerning safety and interference causing equipment regulations © 2005 METREL No part of this publication may be reproduced or utilized in any form or by any means without permission in writing from METREL.
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Page 3: Table Of Contents
MI 2126 Earth 2/3 Table of contents Introduction ......................4 General description.................... 4 Warnings......................4 Standards applied....................5 Instrument description ................... 6 Instrument casing ....................6 Front panel......................6 Connector panel ....................7 Base ........................7 Instrument messages ..................8 Using instrument .................... -
Page 4: Introduction
The instrument is supplied with all accessories necessary for carrying out the tests. 1.2 Warnings In order to ensure operator’s safety while carrying out various measurements and tests using the Earth 2/3, as well as to keep the test equipment undamaged, it is necessary to consider the following general warnings: •... -
Page 5: Standards Applied
MI 2126 Earth 2/3 Introduction 1.3 Standards applied Earth 2/3 instrument is manufactured and tested according to the following regulations, listed below: Electromagnetic compatibility (EMC) Electrical equipment for measurement, control and laboratory use – EMC requirements EN 61326 Class B (Hand-held equipment used in controlled EM... -
Page 6: Instrument Description
MI 2126 Earth 2/3 Instrument description 2 Instrument description 2.1 Instrument casing The instrument is housed in a plastic enclosure, which maintains IP 40 protection class. The casing consists of a main section, which includes the operator's panel and connectors. -
Page 7: Connector Panel
MI 2126 Earth 2/3 Instrument description 2.3 Connector panel Use original test accessories only! Never connect instrument to high voltage! Figure 2. Connector panel Legend: Blue – test terminal H Red - test terminal S Black – test terminal E 2.4 Base... -
Page 8: Instrument Messages
MI 2126 Earth 2/3 Instrument description Legend: Serial number. Information label. Battery cover. Screw to fix battery cover. Battery holder. 2.5 Instrument messages Messages are generated on the LCD using special symbols and numeric segment combinations. The following figure shows all of the possible display segments, and the table below describes the messages. -
Page 9: Using Instrument
Using instrument 3 Using instrument 3.1 Performing 3-wire measurement The Earth 2/3 is able to carry out earth resistance measurement using three wire test method. The distance from the earthing electrode (black, E) to the current measurement probe (blue, H) is at least 5 times the length of earthing electrode rod or the length of the band electrode (see Figure 5). - Page 10 MI 2126 Earth 2/3 Using instrument Figure 6. Connection of optional 50 m long test leads || R || R || R Earthtot Separate earthing resistances. E1..E4 Potential spike resistance. Current spike resistance. Total earth resistance of tested earthing system.
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Page 11: Performing 2-Wire Measurement
If the test result is out of measurement range o.r. message will be displayed. • Measured values of Rp and Rc are in kΩ. 3.2 Performing 2-wire measurement The Earth 2/3 is able to carry out earth resistance measurement using two wire test method. Step 1 •... - Page 12 MI 2126 Earth 2/3 Using instrument Figure 8. Two-wire test method – dependent objects. Figure 9. Two-wire test method - independent objects.
- Page 13 MI 2126 Earth 2/3 Using instrument Figure 10. Two-wire test method – TT network system method Warning: • Make sure that test leads are not connected to the phase line. Earthtot Earth resistance. Resistance of protective conductor. Resistance of earthing electrode.
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Page 14: General Settings
MI 2126 Earth 2/3 Using instrument Step 3 Press the TEST key and view test result. If you want to perform more TEST than one measurement press the TEST key and keep it pressed until the result is stabilized, then release the key. The last result will stay displayed. - Page 15 MI 2126 Earth 2/3 Using instrument Setting the frequency of mains voltage (50 Hz/60 Hz) and measuring algorihtm Keep the TEST key pressed while switching on the instrument until Fr followed by 50 or 60 value (last selected) starts to flash.
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Page 16: Maintenance
MI 2126 Earth 2/3 Maintenance 4 Maintenance 4.1 Batteries The battery symbol - BAT in the lower right corner of the LCD indicates a low battery state. If a low battery state is indicated, the batteries must be replaced to ensure accurate measurements. -
Page 17: Replacing Fuse
MI 2126 Earth 2/3 Maintenance Notes: • Replace all four batteries at the same time! Batteries must be of the same type. • ! Turn power off and disconnect any measurement accessory connected to the instrument before opening battery cover. -
Page 18: Technical Specification
MI 2126 Earth 2/3 Technical specification 5 Technical specification 5.1 Functions Earth resistance, two-wire method, three-wire method Measuring range according to EN61557-5 is: 1.77 Ω ÷ 19.99 kΩ. Accuracy Display range (Ω) Resolution (Ω) 0.00 ÷ 19.99 0.01 ±(2 % of reading + 10 digits) 20.0 ÷... -
Page 19: General Characteristics
MI 2126 Earth 2/3 Technical specification 5.2 General characteristics Power supply (4 × 1.5 V battery IEC LR14) or 4.8 V (4 × 1.2 V NiCd, NiMH) Auto power off yes, approximately 10 min without activity Visual warnings Dimensions (w × h × d) -
Page 20: Standard And Optional Accessories
MI 2126 Earth 2/3 Standard and optional accessories 6 Standard and optional accessories See attached sheet to compare received set of accessories with listed one. The optional accessories may be supplied upon request.
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