User Manual
Contents
1. 10 35 C 061 8 6 23 2 C SIOlade temper UTE al ih o ON EN 20 80 C NOMON ET 20 85 nominal relative AJ 40 60 altitude above sea level cccccsseecccccseseeecceeeeeeecaeueceeeseuuceessaaeeessaeeeeessseeeeeesseeseesaaeeessaes lt 2000m Quality 5 8 48 design construction and manufacturing are ISO 9001 compliant the product meets EMC requirements acc to EN 61326 1 2013 and EN 61326 2 2 2013 13 Accessories 13 1 Basic accessories a set of bands for attaching the signaller and clamps WAPOZOPAKPL transport case WAWALL5 power supply adapter for battery charging WAZASZ11 power cord of the adapter WAPRZLAD230 guarantee card operating manual 13 2 Optional accessories Additionally the following items that are not included in the scope of standard equipment can be purchased from the manufacturer or the distributors WACEGF1OKR WACEGF20KR Flexible clamps F 2 Rogowski coil with a Flexible clamps F 1 Rogowski coil with diameter of 25 cm perimeter 80 cm a diameter of 40 cm perimeter 120 cm OPERATING MANUAL MPU 1 version 1 4 27 WA2. Batteries charged U Batteries low Note e The symbol of discharged battery appearing on the display along with blinking red LED status LED indicate that the supply voltage is too low and batteries need to be recharged e Additionally extremely low battery charge level is indicated by two long beeps with alarm LEDs blinking it is repeated every 15 seconds e Low battery charge level the device should be switched off or it will switch off automatically in a short time measurements performed with an insufficient supply voltage feature additional errors which the user is unable to evaluate Consequently such measurements cannot prove that the tested circuit system is correct 8 2 Replacing rechargeable batteries The manufacturer does not allow the user to replace the battery When it is required the battery may be replaced only in the manufacturer s service department 8 3 Charging rechargeable battery In order to charge the batteries connect the AC adapter to the socket marked Clamp 1 Charger When the charging process starts the battery icon is animated LED indicator flashes green 24 OPERATING MANUAL MPU 1 version 1 4 lt Charging progress symbol In addition after 30 seconds the display blanks out to save power It may be re activated pressing any button After the charging process ends LED indicator is continuously green and the screen dis plays message Accu full Accu B full
3. Note Due to interferences in the mains the process of battery charging may finish prematurely When charging time is too short turn off the meter disconnect the charger and start charging again 8 4 General principles for using Ni MH rechargeable batteries If you do not use the device for a prolonged period of time then it is recommended to remove the rechargeable batteries and store them separately Store the accumulators in a dry cool and well ventilated place and protect them from direct sunlight The temperature of the environment in the case of prolonged storage should not exceed 30 C If the rechargeable batteries are stored for a long time in a high temperature then the occurring chemical processes may reduce their lifetime Rechargeable batteries Ni MH usually lasts for 500 1000 charging cycles The rechargeable batteries reach their maximum capacity after being formatted 2 3 charge and discharge cycles The most im portant factor which influences the lifetime of rechargeable batteries is the level of their discharge The deeper the discharge level of the batteries the shorter their lifetime The memory effect is limited in the case of Ni MH batteries These batteries may be charged at any point with no serious consequences However it is recommended to discharge them completely every few cycles During storage of Ni MH rechargeable batteries they are discharged at the rate of approximately 30 per month Keep
4. OPERATION MANUAL LEAKAGE CURRENT ALARM SIGNALLER MPU 1 Ebner OPERATING MANUAL MPU 1 LEAKAGE CURRENT ALARM SIGNALLER C lt SONEL SA ul Wokulskiego 11 58 100 Swidnica Poland Version 1 4 10 10 2014 OPERATING MANUAL MPU 1 version 1 4 CONTENTS 1 5 2 6 3 6 4 DESCRIPTION AND FEATURES aaa bdb GAIA 7 4 4 CHARACTERSTICS OF MPU Deiner innra A ii dd Ado 7 4 2 ARRANGEMENT OF SOCKETS AND 6 7 4 2 1 4 2 2 SOCO E NA A or 9 GRAPHIC DISPEA Y LOD aug A EZ KA AO O 10 Act JACOUSTIC FVISUAL SIGNALS a a dA AGE OE RR GA diesen alee 10 MEASURING CLAMPS wassat GO E T G A A 10 5 STARTING THE OPERATION 20022220000200000000000000000000000000000000000000000000 11 6 OPERA MON ei R tai A AGGIE 11 6 1 PREPARING MPU 1 FOR OPERATION ccccccccccceseccceeeccceecescesececeuseceseusceeeeeeseaees 11 6 2 MONITORING THE POWER SUPPLY VOLTAGE RECHARGEABLE B
5. SFORAGE ONE 26 11 DISMANTLING AND DISPOSAL 200022200000000000000000000000000000000000000000 26 12 TECHNICAL SPECIFICATIONS 200002200000000000000000000000020000000000000000000000 26 OPERATING MANUAL MPU 1 version 1 4 3 V BASIEDATA ae Rd O A kal 26 2 27 OTHER TECHNICAL SPECIFICATIONS wa AA 27 13 ACCESSORIES orinis aa RI R 27 l BASICACCESSORIES aaa EA E EEE 21 OPIIONA ACCESSORIES godai A OO AI 2 14 MANUFACTURER 28 4 OPERATING MANUAL MPU 1 version 1 4 1 Preface Thank you for purchasing leakage current alarm signaller MPU 1 is a modern easy and sale in use signalling device Please acquaint yourself with this manual in order to avoid measuring errors and prevent possible problems in operation of the device This manual contains three types of warnings They are presented as a framed text describing the possible risks for the user and the device Texts starting with word WARNING describe situations which may endanger user s life or health when instructions are not followed Word CAUTION begins a description of a situation which may result in device damage when instructions are not followed Indication of possible problems is preceded by word Note WARNING Before operating the device read thoroughly this manual and observe the safety regulations and guidelines provided by the producer WARNING
6. Use A W buttons to select the cur rent value above which the alarm will be triggered Confirm your choice by pressing ENTER button OPERATING MANUAL MPU 1 version 1 4 15 After pressing ENTER the device automatically display screen of Alarm on mode and begins to monitor the current flowing through the clamps The set Limit is saved and remembered by the device even after it is turned OFF and ON again CAUTION In Alarm on mode in order to reduce energy consumption the display goes blank after 5 min from switching the device ON or from the last pressing of any button Pressing any button will re activate the display WARNING Do not leave unattended device connected to the tested circuit Do not touch the equipment connected to the tested circuit network 6 4 2 Leakage current measurement in Alarm off mode with displaying the measured value on the screen Remember that after switching off and restarting the device it is always activated in Alarm on mode even when before switching off it operated in Alarm off In order to measure the leakage current flowing through the clamps in Alarm on mode proceed as follows Connect clamps to the socket Clamp 1 7 to perform single clamps measurement or to sock ets Clamp 1 7 and Clamp 2 8 to perform double clamps measurement Then W Press MENU button L Alarm da LUFF Use W buttons to select
7. e using MPU 1 must not substitute any other protection measure in the workplace and or personal protection equipment used by employees Appropriate occupational health and safety regulations must be observed along with other instructions rules and basic safety measures in accordance with local or national regulations Avoid working alone e Caution is required for AC voltages with RMS value exceeding 30 V or when their peak value ex ceeds 42 V Be also careful when DC voltages exceeding 60 V Such voltages generate a risk of electric shock 6 OPERATING MANUAL MPU 1 version 1 4 4 Description and Features 4 1 Characteristics of MPU 1 MPU 1 is designed for monitoring measuring the leakage current in LV and MV AC power systems it is used for measurements in grounding systems to provide results required for as sessing safety of the monitored network in terms of leakage current The device allows its users to set a threshold of leakage current flowing through a network above which a visual acoustic alarm will be triggered The most important features of MPU 1 include constant monitoring of current flowing through the grounding of poles in the range of 0 1 299A in LV and MV 50Hz or 60Hz networks after proper configuration in MENU automatic selection of the measuring range measurement with one or two clamps at the same time with double clamp measurement the current is Summed providing the opportunity to cover the twin poles vo
8. MPU 1 is not the only device required to ensure 100 safety of works with electricity Moreo ver the user s alarm response time he must be taken into account MPU 1 is designed to pro vide additional protection against electric shock in the workplace therefore using MPU 1 must not substitute any other protection measure in the workplace and or personal protection equipment used by employees Appropriate occupational health and safety regulations must be observed along with other instructions rules and basic safety measures in accordance with local or national regulations WARNING Leakage current alarm signaller is designed for monitoring measuring the leakage current in LV and MV networks Any application that differs from those specified in the present manual may result in a damage to the device and constitute a source of danger for the user WARNING MPU 1 signallers may be used only by qualified persons certified to perform measurements on LV and MV live networks Operating the device by unauthorised personnel may result in damage to the device and constitute a source of danger for the user WARNING Using this manual does not exclude the need to comply with occupational health and safety regulations and with other relevant fire regulations required during the performance of a par ticular type of work Before starting the work with the device in special environments e g potentially fire risk explosive environment it is necessary to
9. The nominal working temperature must be absolutely observed 9 Cleaning and maintenance CAUTION Use only the maintenance methods specified by the manufacturer in this manual The casing of the device may be cleaned with a soft damp cloth using all purpose detergents Do not use any solvents or cleaning agents which might scratch the casing powders pastes etc Clamps should be cleaned using the same methods as the housing of the device Clamps and test leads should be cleaned with water and detergents and then dried The electronic system of the device does not require maintenance 10 Storage During the storage of the device the following recommendations must be observed e disconnect all the test leads from the device e clean thoroughly the device and all its accessories in order to prevent total discharge of the rechargeable batteries due to the prolonged storage charge them from time to time e storage temperatures must be in accordance with those defined in technical specifications 11 Dismantling and Disposal Worn out electric and electronic equipment should be gathered selectively i e it must not be placed with waste of another kind Worn out electronic equipment should be sent to a collection point in accordance with the law of waste electrical and electronic equipment Before the equipment is sent to a collection point do not dismantle any elements Observe local regulations concerning disposal of pa
10. function To do this 0 Press MENU button OPERATING MANUAL MPU 1 version 1 4 19 2 A Q Use amp W buttons to select Info Confirm your choice by pressing ENTER button Use A W buttons to select On or Off Confirm your choice by pressing o ENTER button Pressing ENTER automatically switches the screen to monitoring measurement mode which was displayed before the user entered MENU to change settings of Info function Operation of Info function is interrupted during the charging process and when the user explores MENU of the device Setting of Info function is saved and remembered by the device even after it is turned OFF and ON again 6 4 6 Changing the language Language function is used to change the user interface language To do this W Press MENU button 20 OPERATING MANUAL MPU 1 version 1 4 Use W buttons to select Lan guage Confirm your choice by press ing ENTER button Enalish Polski 3 A Use W buttons to select desired language Confirm your choice by pressing ENTER button Introduced change is saved after the device is turned off and on again Note Interface language versions may differ from each other not only by language but also by functionality or operational features After changing the language use instructions adequate for the activated language 6 4 7 Reset function Reset function allows user to restore fact
11. 1 7 and Clamp 2 8 to perform double clamps measurement Then W Press MENU button a3 LU Use W buttons to select Alarm 3 Confirm your choice by pressing ENTER button 3 A Q Use W buttons to select Alarm on Confirm your choice by pressing 5 ENTER button 14 OPERATING MANUAL MPU 1 version 1 4 The device is in operating mode with alarm on The top line of the display indicates the measured value of the current flowing through the clamps the bottom line alternately displays the mode in which the device operates Alarm on and the values set as alarm threshold values limit Depending on the value of the measured current the symbol shown in the bottom line indicates whether the measured current is lower I lt equal I or higher 13 from the set limit The device monitors measures alternating current with rated frequency of 50Hz or 60Hz depending on user settings When the measured current exceeds the set alarm threshold acoustic and visual alarm will be triggered The beep lasts for 30 seconds then it is muted when the alarm status continues then it is indicated by flashing alarm LEDs To set the alarm threshold limit for the current flowing through the clamps proceed as follows W Press MENU button 1 Alarm LUPY Use amp W buttons to select Current Confirm your choice by pressing ENTER button
12. ATTERY 12 6 3 GONNECTING THE DEVICE raa E A AE elites 12 6 4 OPERATING THE INTERFACE cccccccceseccccsccceesecccesececeeceseenecseeseceseueceseueeseeees 13 6 4 1 Monitoring the leakage current with Alarm on 14 6 4 2 Leakage current measurement in Alarm off mode with displaying the measured value on the 16 6 4 3 Changing the frequency of the monitored 17 6 4 4 DEMO MCO ak skos KA wo OG 18 6 4 5 Function for informing about the operational status of the device 19 6 4 6 CON GING e 20 6 4 7 ROSE TUM CIION o O 21 7 TROUBLESHOOTING ecco 23 7 1 WARNINGS AND INFORMATION DISPLAYED BY THE 23 8 POWER SUPPLY OF THE DEVICE wss ai 24 8 1 MONITORING THE POWER SUPPLY VOLTAGE ccccscccceseccesecceecccesceeeseceeeceeeeceees 24 8 2 REPLACING RECHARGEABLE BATTERIES ccccccesccessccsecceccesscesecesceenscessseeceeness 24 8 3 CHARGING RECHARGEABLE BATTERY cccccsscccssecceseccesccesccceneceaeceeueceeeneceeeecees 24 0 4 GENERAL PRINCIPLES FOR USING NI MH RECHARGEABLE BATTERIES 25 9 CLEANING AND MAINTENANCE 220220000000000000000000000000000000000000000000000000 26
13. After pressing ENTER the device automatically displays screen of monitoring measurement mode The device is in the operational mode in which it was before the user entered MENU to change the frequency The set frequency of the network is saved and remembered by the device even after it is turned OFF and ON again 6 4 4 DEMO function As the device is designed to protect employees working with electricity including those that did not read the manual we have introduced DEMO function which may be used to show its operation after selecting DEMO function the device enters alarm mode for 5 sec as in when threshold of the monitored current is exceeded in Alarm on mode This allows to demonstrate the alarm signal to users To start DEMO mode 18 OPERATING MANUAL MPU 1 version 1 4 Press MENU button Use W buttons to select Demo Confirm your choice by pressing ENTER button After pressing ENTER the device starts the alarm mode for about 5 seconds then automatically switches the screen to monitoring neasurement mode which was displayed before the user entered the menu to launch the DEMO function 6 4 5 Function for informing about the operational status of the device Info function enables user to activate the acoustic signal that indicates that the device is activated and operational Selecting On from nfo menu activates the Info mode to operate with the frequency of approx 60s Selecting Off disables the
14. Alarm Confirm your choice by pressing ENTER button 16 OPERATING MANUAL MPU 1 version 1 4 Use W buttons to select Alarm off Confirm your choice by pressing ENTER button After pressing ENTER the device automatically displays screen of Alarm off mode The signaller in Alarm off mode displays in real time the measured value of the current flowing through the clamps The device monitors measures alternating current with rated frequency of 50Hz or 60Hz depending on user settings Additional information Pressing MENU button when viewing the MENU op eno tions results in exiting the current MENU option with out approving the selected value s Its function is equal to BACK CANCEL button WARNING Do not leave unattended device connected to the tested circuit Do not touch the equipment connected to the tested circuit network 6 4 3 Changing the frequency of the monitored network In order to measure the leakage current flowing through the clamps both in Alarm on mode and in Alarm off mode set the rated frequency of tested network as 50Hz or 60Hz In order to introduce a change or to check frequency settings proceed as follows Press MENU button OPERATING MANUAL MPU 1 version 1 4 17 Q Use 4 W buttons to select Fre quency Confirm your choice by pressing ENTER button Use 4 W buttons to select 50Hz or 60Hz Confirm your choice by pressing ENTER button
15. CEGF3OKR WACEGF40O0KR Flexible clamps F 3 Rogowski coil with Flexible clamps F4 Rogowski coil perim a diameter of 13 cm perimeter 45 cm eter 200 cm WAPRZLAD1212V2 Charger for charging the battery from 12V car socket Note The colour and design of the clamps may vary from the shown image 14 Manufacturer The manufacturer of the device and provider of guarantee and post guarantee service SONEL SA ul Wokulskiego 11 58 100 widnica Poland Poland tel 48 74 858 38 60 fax 48 74 858 38 09 E mail export sonel pl Web page www sonel pl Made in Poland Note Service repairs must be performed only by the manufacturer Note Due to constant product development Sonel S A reserves the right to change the parameters and functions of devices including manuals without prior notice If the purchased device differs from the description given in this manual use the appropriate manual version or contact the manufacturer 28 OPERATING MANUAL MPU 1 version 1 4 SONEL SIA Wokulskiego 11 St 58 100 Swidnica Poland ow 48 74 85 83 860 48 74 85 83 800 fax 48 74 85 83 808 http www sonel pl e mail export sonel pl
16. ckages waste batteries and accumulators 12 Technical specifications e The specified accuracy relates to the devices terminals e Abbreviation m v used in the specification of measurement uncertainty means a standard meas ured value 12 1 Basic data Measuring leakage current flowing through the clamps Basic uncertainty 0 1 9 9A 5 m v 2 digits 10 299 A 5 m v 2 digits frequency range 50Hz or e flexible current clamps F 1 26 OPERATING MANUAL MPU 1 version 1 4 12 2 Other technical specifications ZOQOLOOQ O O 0 NN NL o gt gt 2 3 degree of housing protection acc to EN 60529 ee eeeee aaa IP67 power supply of the device 9 4V 2 1Ah Ni MH battery pack of SONEL type parameters of AC adapter for the battery 100 V 240 V 50 Hz 60 Hz standby MODS sasiad OG AG gt 18h oasis EEE PORZ gt 3h alarmi threshold SENNA TANGER APS A GAS AAAA 0 5 A 9 9 A CE 125 x 150 x95 mm weight of the device with batteries ee aaa aa aaa aaa aaa aaa a aaa aaa aaaaaaaaeaaanaaianea approx 1 1 kg working Edd 10 50 C Charger
17. consult it with the person re sponsible for health and safety OPERATING MANUAL MPU 1 version 1 4 5 2 Introduction This manual describes the operation of MPU 1 leakage current alarm signaller We recommend reading the manual thoroughly in order to avoid errors that may result in danger to the user or an incor rect assessment of the tested network For more information on safety during measurements see Chapter 3 Safety Before first use of the device be sure to read Chapter 5 Starting the operation For additional information related to interpreting the warnings and information displayed by the device it is recommended to read Chapter 7 Troubleshooting All information on operating the device may be found in Chapter 6 Operation 3 Safety Sonel has made every effort to ensure that our product MPU 1 is reliable and of the highest quality Remember that MPU 1 is not the only device required to ensure 100 safety of works with electricity Moreover the user s alarm response time he must be taken into account MPU 1 is designed to provide additional protection against electric shock in the workplace therefore using MPU 1 must not substi tute any other protection measure in the workplace and or personal protection equipment used by em ployees Appropriate occupational health and safety regulations must be observed along with other instructions rules and basic safety measures MPU 1 is designed for monitoring measuring the l
18. eakage current in LV and MV AC power systems it is used for measurements that provide results required for assessing safety of the monitored network in terms of leakage current The device allows its users to set a threshold of leakage current flowing through a network above which a visual acoustic alarm will be trig gered Therefore in order to provide conditions for correct operation and accuracy of obtained results the following recommendations must be observed e before using the device read carefully this manual e the meter should be operated only by qualified persons that have passed health and safety training e It is unacceptable to operate the following a damaged device which is completely or partially out of order a device with damaged insulation of test leads a device stored for an excessive period of time in disadvantageous conditions e g excessive humidity e before using the device make sure the leads are connected to the appropriate measurement sock ets e repairs may be performed only by an authorised service point In addition please note that e discharged battery symbol appears on the display when the supply voltage is too low and indicates the need to recharge the batteries e when the power supply voltage is too low the measurements performed with the device may include additional errors undetected by the user and they may not be used to confirm that the tested cir cuit network are properly protected
19. fixing of the device in its workplace WARNING Connecting wrong or damaged clamps may cause electric shock dangerous voltage WARNING Do not use the device with a damaged housing and do not power it from sources other than those listed in this manual WARNING Do not leave unattended device connected to the tested circuit Do not touch the equipment connected to the tested circuit network WARNING Do not use the device if it was stored for an excessive period of time in disadvantageous conditions e g excessive humidity OPERATING MANUAL MPU 1 version 1 4 11 Note Do not use the device if its display is completely unreadable Note Using accessories other than those specified by the manufacturer is prohibited and may result in a danger to the user or damage to the device 6 2 Monitoring the power supply voltage rechargeable battery It is important that MPU 1 has properly charged batteries before using it The charge level of the rechargeable battery is indicated by the symbol in the right upper corner of the display on a current basis Indication of the bat tery charge status Fig 7 Monitoring the battery charge status In order to get more information on power supply of the device read Chapter 8 Power supply of the device 6 3 Connecting the device CAUTION Pay attention to the correct connection of plugs of the clamps as the accuracy of the meas urements depends on the connection quali
20. ing rechargeable batteries at high temperatures may accelerate this process even 100 In order to prevent excessive discharge of rechargeable batteries after which it would be nec essary to format them it is recommended to charge them from time to time even if they are not used Modern fast chargers detect both too low and too high temperature of rechargeable batteries and react to the situation adequately Too low temperature should prevent starting the process of charging which might irreparably damage rechargeable batteries An increase of the temperature of the rechargeable batteries is a signal to stop charging and is a typical phenomenon However charging at a high ambient temperature apart from reducing batteries lifetime causes an accelerated increase of their temperature and the result is that the batteries are not charged to their full capacity Please note that when the batteries are charged with a fast charger they are charged only to approx 80 of their capacity better results can be achieved by continuing charging the charger enters trickle charging mode and during the next few hours batteries are charged to their full capacity OPERATING MANUAL MPU 1 version 1 4 25 iS shown in the battery Do not charge or use rechargeable batteries in extreme temperatures Extreme temperatures reduce the lifetime of batteries and rechargeable batteries Avoid placing devices powered by rechargeable batteries in very hot environments
21. ory settings after using this function the device will set alarm threshold at 1A will disable Info function the network frequency will change to 50Hz The following features will remain unchanged selected language To do this OPERATING MANUAL MPU 1 version 1 4 21 Press MENU button Use W buttons to select Reset Confirm your choice by pressing ENTER button A 8 Use W buttons to select Yes to reset settings or No to cancel Confirm your choice by pressing ENTER but 8 ton After pressing ENTER the meter will introduce the changes and turn off It will turn on again auto matically 22 OPERATING MANUAL MPU 1 version 1 4 7 Troubleshooting 7 1 Warnings and information displayed by the device MPU 1 indicates on its display conditions that require warnings they may be related to the opera tion of the device or to external conditions affecting the measurement process Display mes Cause sage I gt 299A Err 310 Measured current exceeds 299A message only in mode Alarm off Temperature of rechargeable bat tery is too low Temperature of rechargeable bat tery is too high Damaged battery charging Damaged battery or a problem with the power supply adapter XXX any other number Err XXX Other error than those described above OPERATING MANUAL MPU 1 version 1 4 Incorrect calibra tected a loss of calibration tion parameters da
22. ror additional error code is displayed as described below LED flashes red low battery charge level e Battery charging mode LED is illuminated in green battery fully charged LED flashes red low battery charge level 5 Buttons A and LED flashes green charging the battery A set of cursors with auto repetition for choosing MENU options and changing setting values 6 Alarm LEDs A set of red alarm LEDs arranged in two rows on the front panel 5 LEDs in each row and in two rows at the sides of the device 5 LEDs on each side Their operation is described in the next sections 8 OPERATING MANUAL MPU 1 version 1 4 4 2 2 Sockets 3 a up 1 Clamp 2 Flexible clamp F series EpL Fig 2 Arrangement of sockets in MPU 1 CAUTION MPU 1 signaller is designed to measure the current flowing through the clamps with phase voltages up to 1000V Connecting voltage higher than 25V between any of the test terminals may damage the device Measuring socket Clamp 1 Charger The socket for connecting Sonel measuring clamps of F Series Rogowski coil used for measurements with single clamps or for connecting the battery charger Unused socket should be secured with a flex ible socket plug Measuring Clamp 2 The socket for connecting Sonel measuring clamps of F Series Rogowski coil used for measurements with double clamps Unused socket should be secured with a flexible socke
23. rtex independent clamps for each component pole triggering alarm when the current flow exceeds the alarm threshold default setting at 1A acoustic and visual alarm a speaker built in within the housing no measurement for direct currents measurement with Sonel flexible clamps of F series Rogowski coil the option of changing the diameter of clamps without the need to re calibrate the device monitoring the battery charge status LED indicator for operation mode ergonomic operation IP 67 4 2 Arrangement of sockets and buttons dk SZ 8 row R qe Fig 1 Arrangement of LEDs and buttons front panel OPERATING MANUAL MPU 1 version 1 4 7 4 2 1 Keyboard ON OFF button Turning the device ON OFF 2 MENU button Selecting the measurement function e Alarm setting the alarm on or off Curr setting the alarm threshold for current flow Demo simulation of an alarm condition Freq setting the rated frequency of the network 50Hz or 60Hz Info activation of information about the operation of the device Lang selection of the user interface language Reset restoring factory default settings 3 ENTER button Approving entered settings exiting to menu 4 LED indicating the operational status of the device EE e Measuring Mode LED is illuminated in green the device is in operational mode LED is illuminated in red device er
24. t plug The device sums up current values from the two sockets it is the mathematical sum it does not take into account the phase shifts OPERATING MANUAL MPU 1 version 1 4 9 4 3 Graphic display LCD The value of measured Current flowing through lt the clamps Indication of the bat Device operation tery charge status mode value of the set alarm threshold Fig 2 The view of the screen when alarm is off The value of measured a current flowing L1 n L1 pel jm lt ees 588 f through the clamps Device operation mode Indication of the bat a Cif tery charge status Fig 3 The view of the screen during the measurement of LV network Sie nn 4 4 Acoustic visual signals Warning signals Continuous two tone beep with flashing alarm LEDs mode Sie SN MV network e ALARM status the current flowing through the clamps exceeded the set threshold The beep lasts for 30 seconds then it is muted when the alarm status continues then it is indicated by flashing alarm LEDs Two long beeps with illuminated alarm LEDs repeated every 15 seconds e ow level of battery charge the device should be switched off or it will turn off automatically in a short time more information on discharged batteries see Chapter 8 Power supply of the de vice Short two acoustic signals beeps with active Info option e the signal indicating
25. ta In Alarm on mode the Potentially hazardous situa current exceeding the limit tion Disconnect the device value will be always indi from the network cated by alarm mode in both cases when the measuring range of the meter is exceeded and when the user set limit is exceeded Stop the charging process and battery re start it in a correct ambient temperature If the problem per sists contact the manufactu rer s service Stop the charging process and battery re start it in a correct ambient temperature If the problem per sists contact the manufactu rer s service battery Contact the manufacturer s se rvice Check the power supply con nection if the problem persists contact the manufacturer s service Concerns the charging process Concerns the charging process Concerns the charging process Concerns the charging process battery Contact the manufacturer s se rvice Contact the manufacturer s se rvice 23 8 Power supply of the device Note MPU 1 is designed to operate only with built in rechargeable batteries installed in the factory and with factory accessories for charging them CAUTION Connecting voltage higher than 25V between any of the test terminals may damage the device 8 1 Monitoring the power supply voliage The charge level of the rechargeable battery is indicated by the symbol in the right upper corner of the display on a current basis
26. the device operation working when you turn Info function the signal is re peated approx every 60 seconds 4 5 Measuring Clamps e MPU 1 is calibrated in the factory taking into account the parameters of original Sonel clamps of F Series The examples of clamp models compatible with MPU 1 are listed in Chapter 13 Acces sories WARNING Connecting wrong or damaged clamps may cause electric shock dangerous voltage 10 OPERATING MANUAL MPU 1 version 1 4 Note The manufacturer guarantees the accuracy of device readings only when it is used with measuring clamps supplied with the device or purchased from manufacturer s authorized source Using extension cords or other modifications and aftermarket clamps may be a source of additional errors Note CAT III 1000V marking on accessories is equivalent to CAT IV 600V marking 5 Starting the operation Before starting the operation of the device e check the contents of the package e check and modify if needed the settings of the device displaying results operating mode alarm threshold etc 6 Operation Read thoroughly this chapter as it describes metering circuits measurement methods settings and other important issues 6 1 Preparing MPU 1 for operation Before performing the measurement e make sure that the battery level is sufficient for measurements e check the device and accessories for damage e check the proper connection of clamps and adequate
27. ty They must ensure good contact and provide uninterrupted measurement current flow Using extension cords or other modifications and aftermarket clamps is unacceptable CAUTION Connecting voltage higher than 25V between any of the test terminals may damage the de vice The device is connected to the tested power network or to the tested device as shown in the draw ings below 12 OPERATING MANUAL MPU 1 version 1 4 Fig 9 Operating the device with single clamps Fig 10 Operating the device with double clamps 6 4 Operating the interface Additional information Pressing MENU button when viewing the MENU options results in exiting the current MENU option without approv ing the selected value s Its function is equal to BACK CANCEL button Any changes selected options are ap proved by pressing ENTER OPERATING MANUAL MPU 1 version 1 4 13 6 4 1 Monitoring the leakage current with Alarm on mode CAUTION Connecting voltage higher than 25V between any of the test terminals may damage the device Alarm on mode is a standard operation mode of MPU 1 After switching off and restarting the device it is always activated in alarm on mode it remembers the settings entered before switching off In order to monitor the leakage current flowing through the clamps in this mode proceed as follows Connect clamps to the socket 7 Clamp 1 to perform single clamps measurement or to sockets Clamp
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