Subscribe to Our Youtube Channel
Related Manuals for METREL SmarTEC
Summary of Contents for METREL SmarTEC
- Page 1 Insulation / Continuity MI 3121 Instruction manual Version 1.2, Code no. 20 751 246...
- Page 2 (European Union) concerning safety and electromagnetic compatibility regulations © 2008 METREL The trade names Metrel, Smartec, Eurotest, Autosequence are trademarks registered or pending in Europe and other countries. No part of this publication may be reproduced or utilized in any form or by any means...
-
Page 3: Table Of Contents
MI 3121 Smartec Insulation / Continuity Table of contents Preface.........................5 Safety and operational considerations..............6 Warnings and notes....................6 Battery and charging .....................8 2.2.1 New battery cells or cells unused for a longer period ........9 Standards applied....................10 Instrument description.....................11 Front panel ......................11 Connector panel ....................12... - Page 4 MI 3121 Smartec Insulation / Continuity Table of contents Technical specifications ..................35 Insulation resistance....................35 Continuity ......................36 8.2.1 Resistance RLOW..................36 8.2.2 Resistance CONT ..................36 Voltage, frequency....................36 8.3.1 Voltage ......................36 8.3.2 Frequency ....................36 General data......................37 Appendix A - Accessories for specific measurements .........38...
-
Page 5: Preface
In order for operator to be familiar enough with performing measurements in general and in typical applications it is advisable to read Metrel handbook Guide for testing and verification of low voltage installations. The instrument is equipped with all the necessary accessory for comfortable testing. -
Page 6: Safety And Operational Considerations
In order to reach high level of operator’s safety while carrying out various tests and measurements using Smartec Insulation / Continuity test equipment, as well as to keep the equipment undamaged, it is necessary to consider the following general warnings: Warning on the instrument means »Read the Instruction manual with... - Page 7 MI 3121 Smartec Insulation / Continuity Warnings and notes Notes related to measurement functions: General If there is any irregular condition on input terminals then the selected measurement can't be performed. Insulation resistance, and continuity measurements shall be performed on de- energized objects, i.e.
-
Page 8: Battery And Charging
MI 3121 Smartec Insulation / Continuity Battery and charging 2.2 Battery and charging The instrument uses six AA size alkaline or rechargeable Ni-Cd or Ni-MH battery cells. Nominal operating time is declared for cells with nominal capacity of 2100 mAh. -
Page 9: New Battery Cells Or Cells Unused For A Longer Period
MI 3121 Smartec Insulation / Continuity Battery and charging 2.2.1 New battery cells or cells unused for a longer period Unpredictable chemical processes can occur during charging of new battery cells or cells that were unused for a longer period (more than 3 months). Ni-MH and Ni-Cd battery cells are affected to capacity degradation (sometimes called as memory effect). -
Page 10: Standards Applied
MI 3121 Smartec Insulation / Continuity Standards applied 2.3 Standards applied The MI 3121 Smartec Insulation / Continuity instrument is manufactured and tested according to the following regulations, listed below. Electromagnetic compatibility (EMC) Electrical equipment for measurement, control and laboratory use –... -
Page 11: Instrument Description
MI 3121 Smartec Insulation / Continuity Front panel 3 Instrument description 3.1 Front panel Figure 3.1: Front panel Legend: 1 LCD Custom display with backlight. 2 TEST Starts / stops a measurement. 3 UP Modifies selected parameter. 4 DOWN 5 MEM Store / recall / clear tests in memory of instrument. -
Page 12: Connector Panel
MI 3121 Smartec Insulation / Continuity Connector panel 3.2 Connector panel Figure 3.2: Connector panel Legend: 1 Test connector Measuring inputs / outputs, connection of measuring cables. Protects from simultaneous access to test connector and power 2 Protection cover supply adapter socket / communication connectors. -
Page 13: Back Panel
MI 3121 Smartec Insulation / Continuity Back site 3.3 Back panel Figure 3.3: Back site Legend: Side belt Battery compartment cover Fixing screw for battery compartment cover Back panel information label Holder for inclined position of the instrument Magnet for fixing instrument close to tested item (optional) Figure 3.4: Battery compartment... -
Page 14: Display Organization
MI 3121 Smartec Insulation / Continuity Display organization 3.4 Display organization Function field Result field Analog results display Message field Figure 3.5: Typical display Auxiliary monitor Battery indication 3.4.1 Function field The function field displays currently selected function. Selected function is Insulation resistance. -
Page 15: Message Field
MI 3121 Smartec Insulation / Continuity Display organization 3.4.3 Message field In the message field, different warnings and messages are displayed. Warning! Dangerous voltage is applied to the test terminals. Fuse F1 has blown or not inserted (CONTINUITY functions). Test leads resistance in CONTINUITY tests is compensated. -
Page 16: Backlight
MI 3121 Smartec Insulation / Continuity Display organization Locked high backlight intensity. subresult in RLOW function. subresult in RLOW function. 3.4.7 Backlight With the BACKLIGHT key the backlight can be adjusted. Click Toggle backlight intensity level. Locks-on high backlight. It keeps until power off or next click on the Pressed for 1 s key BACKLIGHT. -
Page 17: Instrument Operation
MI 3121 Smartec Insulation / Continuity Function selection 4 Instrument operation 4.1 Function selection For selecting test function, the FUNCTION SELECTOR shall be used. Keys: Select test / measurement function: <VOLT> Voltage and frequency and phase sequence. FUNCTION <INS> Insulation resistance measurement. -
Page 18: Settings
MI 3121 Smartec Insulation / Continuity Settings 4.2 Settings The instrument offers additional functions by the following combinations of the keys during power on. Combinations are: UP + ON Opens settings menu. TAB + ON Resets the instrument to initial factory settings. -
Page 19: Date And Time
MI 3121 Smartec Insulation / Continuity Settings The default setup is listed below: Instrument setting Default value Function Parameters / limit value Sub-function Insulated resistance No limit Utest = 500 V Continuity RLOW RLOW No limit CONT No limit Note: Initial settings (reset of the instrument) can be recalled also if the TAB key is pressed while the instrument is switched on. -
Page 20: Commander
MI 3121 Smartec Insulation / Continuity Settings Warning: If the batteries are removed for more than 1 minute, the set time will be lost. 4.2.3 Commander Selecting this option, the support for remote commanders can be switched On/ Off in this menu. -
Page 21: Measurements
MI 3121 Smartec Insulation / Continuity Insulation resistance 5 Measurements 5.1 Insulation resistance Insulation resistance measurement is performed in order to assure safety against electric shock through insulation. It is covered by the EN 61557-2 standard. Typical applications are: Insulation resistance between conductors of installation,... - Page 22 MI 3121 Smartec Insulation / Continuity Insulation resistance Insulation resistance measuring procedure Select the function using the function selector switch. Set the required test voltage. Enable and set limit value (optional). Disconnect tested installation from mains supply (and discharge insulation as required).
-
Page 23: Resistance Of Earth Connection And Equipotential Bonding
MI 3121 Smartec Insulation / Continuity Continuity 5.2 Resistance of earth connection and equipotential bonding The resistance measurement is performed in order to assure that the protective measures against electric shock through earth bond connections are effective. Two sub-functions are... -
Page 24: Continuous 7 Ma Resistance Measurement Cont
MI 3121 Smartec Insulation / Continuity Continuity Resistance to earth connection and equipotential bonding measurement procedure Select continuity function RLOW or CONT using the function selector switch. Set sub-function to RLOW. Enable and set limit (optional). Connect test cable to the top of the instrument. - Page 25 MI 3121 Smartec Insulation / Continuity Continuity Test circuit for CONT resistance measurement Figure 5.7: Universal test cable application Continuous resistance measurement procedure Select continuity function RLOW or CONT using the function selector switch. Set sub-function CONT. Enable and set the limit (optional).
-
Page 26: Compensation Of Test Leads Resistance
MI 3121 Smartec Insulation / Continuity Continuity 5.2.3 Compensation of test leads resistance This chapter describes how to compensate for test leads resistance in both continuity functions (RLOW and CONT). Compensation is required to eliminate the influence of test leads resistance and the internal resistances of the instrument on the measured resistance. -
Page 27: Voltage And Frequency
MI 3121 Smartec Insulation / Continuity Voltage and frequency 5.3 Voltage and frequency In the Volt menu the measured voltage and frequency are displayed. See 4.1 Function selection for instructions on key functionality, Figure 5.10: Voltage and frequency display Circuits for voltage measurement... - Page 28 MI 3121 Smartec Insulation / Continuity Voltage and frequency Voltage measurement procedure Select the VOLT function. Connect test cable to the instrument. Connect test leads to the tested object (see figure 5.11). Store current measurement result (optional). Measurement starts immediately after selection of VOLT function.
-
Page 29: Data Handling
MI 3121 Smartec Insulation / Continuity Memory organization 6 Data handling 6.1 Memory organization Measurement results together with all relevant parameters can be stored in the instrument’s memory. 6.2 Data structure The instrument’s memory place is divided into 2 levels each containing 199 locations. The number of measurements that can be stored into one location is not limited. -
Page 30: Storing Test Results
MI 3121 Smartec Insulation / Continuity Storing test results 6.3 Storing test results After the completion of a test, the results and parameters are ready for storing (MEM is displayed with result). By pressing the MEM key, the user can store the results. -
Page 31: Clear / Recall Options
MI 3121 Smartec Insulation / Continuity Clearing stored data 6.5 Clear / recall options Press the MEM key in a main function menu for few seconds to activate possibility for clearing or recalling results. Figure 6.3: Entering menu for recall / clear options on stored results Keys in recall / clear memory menu: Opens menu to clear result at currently selected location. -
Page 32: Clearing Individual Results At Selected Location
MI 3121 Smartec Insulation / Continuity Clearing stored data Figure 6.5: Clearing memory in progress 6.5.2 Clearing individual results at selected location After selection of CLEAR result, the instrument will display the following: Figure 6.6: Clear measurements menu Keys in clearing individual results menu (data structure field selected): Selects the location element (Object / Location). -
Page 33: Communication
MI 3121 Smartec Insulation / Continuity Clearing stored data 6.6 Communication Stored results can be transferred to a PC. A special communication program on the PC automatically identifies the instrument and enables data transfer between the instrument and the PC. -
Page 34: Maintenance
7.1 Fuse replacement There is a fuse under back cover of the Smartec Insulation / Continuity instrument. M 0.315 A / 250 V, 20×5 mm This fuse protects internal circuitry for continuity functions if test probes are connected to the mains supply voltage by mistake during measurement. -
Page 35: Technical Specifications
MI 3121 Smartec Insulation / Continuity Technical specifications 8 Technical specifications 8.1 Insulation resistance Insulation resistance (nominal voltages 50 V , 100 V and 250 V Measuring range according to EN61557 is 0.15 MΩ ÷ 199.9 MΩ. Accuracy Measuring range (MΩ) Resolution (MΩ) -
Page 36: Continuity
MI 3121 Smartec Insulation / Continuity Technical specifications 8.2 Continuity 8.2.1 Resistance RLOW Measuring range according to EN61557 is 0.16 Ω ÷ 1999 Ω. Accuracy Measuring range R (Ω) Resolution (Ω) 0.00 ÷ 19.99 ±(3 % of reading + 3 digits) 0.01... -
Page 37: General Data
MI 3121 Smartec Insulation / Continuity Technical specifications General data Power supply voltage......9 V (6×1.5 V battery or accu, size AA) Operation .......... typical 13 h Charger socket input voltage .... 12 V ± 10 % Charger socket input current..... 400 mA max. -
Page 38: A Appendix A - Accessories For Specific Measurements
MI 3121 Smartec Insulation / Continuity Accessory for specific measurements A Appendix A - Accessories for specific measurements The table below presents standard and optional accessories required for specific measurement. The accessories marked as optional may also be standard ones in some sets. - Page 39 MI 3121 Smartec Insulation / Continuity Accessory for specific measurements...
- Page 40 MI 3121 Smartec Insulation / Continuity Accessory for specific measurements...
Need help?
Do you have a question about the SmarTEC and is the answer not in the manual?
Questions and answers