SPCMini USER MANUAL
Contents
1. PowerPackPro will automatically open a graph after a survey has been successfully downloaded Graphs may also be opened by clicking on the relevant survey in the survey list or via the icon The default graph settings will create a graph using a 30 minute data interval with an initial view of a 1 week period PowerPackPro is shipped with two sample surveys pre loaded Survey 1 is used in the following pages E Survey 1 i yt pot e HE Current amps Tuesday 21 09 2004 09 30 00 Tuesday 28 09 2004 09 30 00 l N z ve N A d a T aA A aa Eana Wed 22 Thu 23 Fri 24 Sat 25 Sun 26 Mon 27 Tue 28 The above window shows the default view for survey 1 19 SELECTING THE MEASUREMENT UNIT Click the drop down list on the toolbar to select the desired unit Current amps Y NOTE The Energy Power Cost values are defined by the values entered by the user at the download stage See page 26 for details on editing these values NOTE The graph uses a line chart for amps and kW and a bar chart format for the derived values of kWh and cost USING THE GRAPH TOOLS Chart Tab Zoom Click the zoom tool buttons to activate the zoom cursor Drag the cursor over the desired graph area whilst holding down the left mouse button to2. Control Panel and note whether the Bluetooth icon appears in your control panel window If it is present this means Bluetooth has been loaded onto your PC but may not be correctly enabled wg If it is present but not working click the system icon system and select Hardware Device Manager Check that the Bluetooth icon appears on your device list g Device Manager File Action View Help gt El 2 ee DEBBIES P H 8 Bluetooth Radios H H Computer sae Disk drives H al Display adapters 4 DYDICD ROM drives E E3 Floppy disk controllers H A Floppy disk drives If it does not or if_it appears with a red X or yellow exclamation mark Bluetooth is not enabled lf your Bluetooth uses an external USB Dongle make sure it is plugged in Most dongles have an on board activity e d 29 If this does not show any signs of life when plugged in the dongle may be faulty lf your PC is fitted with Bluetooth as standard it does not require any external dongle check that it is enabled This may require you to enter the Set up routine of your PC and may not necessarily be a windows operation Refer to your PC documentation for more assistance Check whether PowerPackPro or your Bluetooth Utility can see any other Bluetooth devices in range of the host PC such as mobile phones PDAs etc as these will appear on the devices tree in PowerPackPro or in the device list in your B
3. yes to save changes Es Survey details have been changed Do you wish to save w cma DATA TAB Click the Data tabs to display the survey data in tabular format Note that the data will match the graph period selected If the graph is zoomed in the data will be also Selecting Data Hold down the left mouse button and drag the cursor to select data The select all data click the Edit Select All button on the main menu bar Selected data may be copies and pasted as required using the relevant buttons on the main toolbar Exporting Data Data may be exported in tabular form the Excel or Word by clicking the relevant buttons F F on the main toolbar STATISTICS TAB Click the statistics tab to display the stats window B Survey 1 Statistics From 21209 72004 09 30 00 To 28 09 2004 09 30 00 Duration 7 days Interval 30 minutes Data Points 336 Mema oo Current amps Eneray kWh Power kw n MeanYalue 150 1 16 2 32 4 1 62 Median Value 250 8 27 1 542 2 71 Maximum Yalue _ 35 E 94 2 4 71 Time of Maximum 23 09 2004 09 00 00 23 09 2004 09 00 00 23 09 2004 09 00 00 23 09 2004 09 00 00 3 a7 Time of Minimum 25 09 2004 20 30 00 25 09 2004 20 30 00 25 09 2004 20 30 00 25 09 2004 20 30 00 Mean to Peak Ratio Standard Deviation 5 8 0 6 1 3 0 06 Overall Yalue 150 1 5445 1 32 4 544 81 25 COSTS TAB Click the
4. PowerPackPro is a task orientated program and is extremely easy to drive even for new users LOADING THE SOFTWARE PowerPackPro uses Bluetooth wireless technology to connect to the SPCMini which means no cable connection is necessary or available for the SPCMini Before loading PowerPackPro it s important to establish if your PC has Bluetooth installed See page li for recommended PC specification lf your PC has Bluetooth already installed it should not require any additional configuration to work with the SPCMini amp PowerPackPro See the troubleshooting guide at the back for this user manual for further information on Bluetooth issues lf your PC does not have Bluetooth installed an accessory kit is available form Elcomponent which includes a plug in Bluetooth USB module Alternatively Bluetooth modules are available from your PC supplier Please refer to the documentation included with your Bluetooth hardware for installation instructions which is normally a simple Plug and Play procedure To load PowerPackPro install the CD and follow the on screen instructions NOTE PowerPackPro is available for free download at www spcmini com Check the website for free upgrades 10 POWEPACKRO AT A GLANCE Main Toolbar Bj PowerPackPro 8 14 06 Salt Abpm slur ates BEAT SGudd 4aBal Ewe S DEBBIESXP y COM2 Bluetooth i 3 Debbie RD BILL e SPCmini 001109 Sat 25 Sun 26 e a Alstar
5. costs tab to display the costing window PowerPackPro is supplied with two preloaded tariffs Default Single Rate and Default Day amp Night Rate These are provided as examples and do not necessarily reflect actual tariffs E Survey 1 Costs i D o xj Taiti Default Single Rate gt Description From To ae a linea All day rate oto ooo 10000 5438 3 ADDING AND AMENDING TARIFFS PowerPackPro supports the entry of multiple tariffs with up to 5 time bands To amend an existing tariff overtype the description field as required and enter the desired cost rates also Note that costs are entered as P kWh Select the desired start finish times from the drop down menu Amended values will change from black to red Click the recalculate button to apply the revised rates to the survey data To create a new tariff proceed as above adding additional bands if required The option to save changes appears when exiting from the costs page Click Yes to save changes Enter a new tariff name in the Save Tariff As box to create a new tariff save as the existing name to amend a tariff 26 ALARMS TAB Click the Alarm tab CE eas gt tow 64162 if SS J Variable Curent amps gt F High j Dmi SE LN 21 09 2004 13 30 00 Wed 22 09 2004 02 00 00 Wed 2270972004 02 30 00 Wed 22 09 2004 03 30 00 Wed 22709 2004 05 00 00 Wed
6. logging the middle loaded phase In all cases it is imperative that the unit is clipped around one phase only THE DATA LOGGER To use the SPCMini as a data logger it must first be set to the desired storage interval using the PowerPackPro utility software supplied See page 01 for details of this procedure Switch the slide switch to log mode up The reset start and Bluetooth l e d s will illuminate briefly to indicate that the logger electronics have been initiated NOTE Ensure that the battery in the SPCMini has sufficient charge before starting a Survey Clip the SPCMini around the desired cable conductor and press and hold the reset start button until the red l e d goes out to initiate logging Refer to the Clip on Ammeter instructions on page 5 for further details on installing the unit onto a conductor NOTE The red Log on e d will behave differently depending on the memory status of the logger If the logger memory already contains data that have not been downloaded the I e d will warn by flashing quickly Releasing the button whilst the l e d is still flashing will retain the data allowing the user to download it before proceeding If the button is pressed and held for approximately 5 seconds the l e d will cease flashing any existing data will be erased and a new survey will commence This is indicated by the l e d producing a short flash every 5 seconds whilst logging is taking plac
7. 22709 2004 06 30 00 Wed 22 09 2004 11 30 00 Thu 23 09 2004 03 00 00 Thu 23 09 2004 04 30 00 Thu 23 09 2004 06 00 00 Thu 23 09 2004 09 00 00 Fri 24 09 2004 11 30 00 Fri 24 09 2004 18 00 00 Fru 24709 2004 18 30 00 Fui 24 09 2004 19 00 00 Fri 24 09 2004 19 30 00 Fri 2470972004 20 00 00 Fri 24709 2004 20 30 00 nw D Data Statist j Vata _ SROs S Select the desired parameter from the drop down menu at top left Enable high and low alarms via the checkboxes provided Enter your desired alarm thresholds as required and press the enter key to activate The alarm events will be listed in the main window NOTE Alarm thresholds may also be viewed on the chart with the alarm zones appearing in pink see page 22 iE Zz P h E current Camps P Tuesday 21 09 2004 09 30 00 Tuesday 28 09 2004 09 30 00 Fri 24 Sat 25 21 BLUETOOTH TROUBLESHOOTING INSTALLING BLUETOOTH ON YOUR PC The SPCMini requires a Bluetooth enabled PC preferably running Windows XP If your PC does not have Bluetooth an accessory kit is available from Elcomponent which includes a Bluetooth USB dongle Alternatively a Bluetooth kit is readily available from your PC Supplier lf a few rules are observed during the installation of your Bluetooth kit you should experience no problems communicating with your SPCMini Bluetooth Dongles are supplied with a CD of ass
8. initiating a survey The datalogger features extremely efficient low power circuitry as well as a totally secure memory recorded data are not dependent on the battery condition or presence and a fully charged battery should provide sufficient energy for a survey lasing 4 weeks or more However it is recommended that a new battery be installed before starting a survey To change the battery the cover on the back of the unit is removed using a Phillips type screwdriver The battery is then clipped onto the terminal block ensuring that the correct polarity is respected Replace the cover ensuring that no cables are trapped or misplaced THE CLIP ON AMMETER To use the SPCMini in ammeter mode the selector switch should be set to display down and the current selector switch set for the desired range NOTE If the load to be measured is not known set the unit to the 600A range and reset it as necessary A WARNING Do not alter the range setting whilst a load is being measured as this could damage the unit Always remove the SPCMini from the cable before resetting the range switch Clip the unit around the conductor to be measured and read the current in amps on the LCD display A WARNING Take care when working near live parts Ensure that the power is turned off before exposing live parts The SPCMini should be used on insulated conductors only MAKING SINGLE PHASE MEASUREMENTS The SPCMini is a single input device and is
9. a ao oem The Old Brewery Works Lr Ellacombe Church Rd Torquay UK TQ1 1JH Tel 01803 295430 Fax 01803 212819 email sales stephenpwales co uk SPCMini USER MANUAL SPCMini User s Guide Copyright 2006 Elcomponent Ltd All Rights Reserved The information in this document is subject to change without notice Elcomponent Ltd has made every effort to ensure the accuracy of this manual However Elcomponent Ltd makes no warranties with respect to this documentation and disclaims any implied warranties of merchantability and fitness for a particular purpose Elcomponent Ltd assumes no responsibility for any errors that may appear in this document Trademarks Bluetooth is a registered trademark of Bluetooth SIG Inc IBM is a registered trademark of International Business Machines Corporation Windows is a trademark of Microsoft Corporation All other product names are copyright and may be trademarks and or registered trademarks of their respective companies Symbols The following symbols may be used in this manual WARNING Failure to follow the instructions may result in personal injury or damage to the instrument PC Specification The SPCMini has a large memory capacity and also utilises Bluetooth as its communication and data transfer protocol This requires a PC of the following minimum specification to make best use of the product s capabilities Windows Windows XP Home or Professional Processor P
10. ally for the SPCMini and is streets ahead of the competition Designed by Mike Matthews the architect of our acclaimed MeterRing MM aM amp T package it combines outstanding ease of use with many powerful features for effective energy management DESCRIPTION The SPCMini combines the functions of a clip on ammeter for measuring AC current with a sophisticated data logger to record the measured current at the desired storage interval The unit contains a Bluetooth communications module which provides wireless communication to any Bluetooth equipped PC running Windows XP allowing the user to set up and download the logger via the PowerPackPro utility software supplied with the SPCMini The SPCMini features simple controls see At A Glance on page 1 and may be used either as a simple clip on ammeter or as a datalogger as detailed below SETTINGS amp USE CHANGING THE BATTERY The SPCMini is powered by a PPS type 9VDC alkaline battery Duracell MN1604 or equivalent The battery powers both the clip on ammeter display and the datalogger A fully charged battery will give many hours of display time when the SPCMini is being used as a clip on ammeter A low battery condition is indicated by the LOBAT warning appearing in the bottom left of the ammeter display 0 00 LOBAT The battery voltage is also monitored by the PowerPackPro utility software see page 16 allowing the user to assess the battery condition prior to
11. define a zoom area ET E PP h aloe Tuesday 21 09 2004 09 30 00 Tuesday 28 09 2004 09 30 00 Wed 22 Thu 23 Fri 24 Sat 25 Sun 26 Mon 27 Tue 28 SS All day rate 20 Release the mouse button to display the zoom area ioj x iP h la A E oste Tuesday 21 09 2004 23 57 48 Thursday 23 09 2004 02 21 33 Wed 22 Thu 23 E All day rate NOTE The zoom function can be repeated as many times as necessary to provide a macro zoom capability The button reverses the zoom in process one step per click Show Data Values Click the crosshairs button to enable this feature Place the crosshairs at any point on the data trace to display the value and time stamp below the title bar Double click on the trace to display this information on the graph itself 21 Z Wednesday 22 09 2004 11 30 41 4 68 He Cost 2 y 22 09 2004 01 24 35 Thursday 23 09 2004 00 11 23 TAOTE AM To remove data values from the graph re select the cursor Show Alarm Levels Click the 06 00 03 00 12 00 15 00 18 00 21 00 00 00 E All day rate See page 27 for information on setting alarms 22 Show Gridlines Click the Ea button to toggle the graph gridlines on and off ADDITIONAL GRAPH FUNCTIONS Export to Microsoft Office Click the Excel or w Word buttons on the main toolbar to export the graph image to either of these programs This can also be done using the Edit Sel
12. device you wish to use Bluetooth device Device Name SPCmini 001193 Debbie mt GC mt BILL Nokia 6310i Highlight the SPCMini and click next to proceed The Utility will allocate a COM port to the device which is confirmed by the following screen Add New Connection Wizard COH port setting Setup of COM42 complete Setup application software and driver if needed Click next to display the available devices and or close the utility At this point some utilities allow the user to specify an action to be completed after the connection is made If this option exists specify the opening of C ProgramFiles Elcomponent PowerPackPro PowerPackPro exe as the desired action PowerPackPro will then open automatically whenever an SPCMini Bluetooth connection is established Re open PowerPackPro noting that the available COM ports will appear on the tree including the port that has been allocated to the SPCMini Right click on this port and select Discover Logger This will add the SPCMini to the tree and open the dialogue window as shown on page 13 NOTE The Bluetooth Utility supplied with your PC may differ in detail from that shown above but the principle remains the same If PowerPackPro does not show a Bluetooth icon on the tree and does not find the logger use the utility preloaded onto your PC to establish a link with the SPCMini and to allocate a COM port to it 15 This provide
13. e lf there are no unrecovered records in the logger memory the I e d will respond by illuminating for approximately 2 seconds before logging Is initiated Check the l e d is showing a short flash every 5 seconds to verify that logging is actually enabled If the storage period is set to less than 5 seconds the l e d will flash each time a record is stored NOTE The display does not function in log mode and the rotary range switch is inoperative It is not necessary to select a range as the datalogger is fully auto ranging and will provide maximum accuracy and resolution under all load conditions The unit may be left to complete the programmed survey at which point the logger will enter a dormant mode or the survey may be downloaded terminated at any point For instructions on downloading the SPCMini refer to page 17 SWITCHING THE UNIT OFF When not in use the SPCMini should be switched off using the slide switch middle position This will switch off both the display and the datalogger to preserve the battery NOTE Any data stored in the datalogger will not be lost when the unit is switched off They are retained for future download 9 POWERPACKPRO SOFTWARE OVERVIEW The SPCMini is shipped complete with a dedicated PC utility program which provides communication set up and data presentation capabilities _PowerPackPro is designed to run on Windows XP but may also be used on W2000 platforms
14. e IE Saos ine 100 eNbmpo EY spe user maruahdoc Mi GB Fulshot 6 08 Profession gt PowerPackPro 22 Bluetooth Networ Tree Data Presentation Window List of downloaded Surveys 11 COMMUNICATING WITH THE SPC MINI Click the desktop icon 4 ho open PowerPackPro The software will automatically open the Searching for Loggers dialog box Bluetooth Searching for loggers Ensure switch in bog positon and press Bluetooth button on logger to enable discover A Switch the SPCMini to log and press the Bluetooth button to enable discovery NOTE The Bluetooth e d will come on and remain illuminated for approximately 20 seconds to indicate that the unit is in discovery mode If the SPCMini has not linked to the PC within this time press the Bluetooth button a second time to re enable discovery After approximately 10 20 seconds the software should find the logger and establish a connection with it This is confirmed by the window shown below 12 NOTE The SPCMini will also appear on the device tree when it links to the host PC El a DEBBIESP ie ay CoM El Bluetooth ie SPCmini 0011 44 You may also see other Bluetooth devices appearing usually mobile phones and these may be found more quickly than the SPCMini This is normal and a function of the fact that the SPCMini and PC must find each other then pair with each oth
15. e jaw provides access for load in amps cables up to 40mm diameter Selector switch for display SAC MNI On Off Selector switch for current range display and logger functions Start Logging Bluetooth enable button Survey Running indicator and Bluetooth operation indicator data overwrite warning indicator INTRODUCTION The SPCMini and its dedicated PC software package PowerPackPro combine new technology and years of experience into an unbeatable low cost package lt has a large clear display a massive Flash memory and set up and data download is via an integrated Bluetooth communication chip compatible with virtually any PC running Windows The SPCMini is also extremely versatile and will provide accurate results on loads as small as 1 amp right up to a maximum of 600 amps The logging interval is fully adjustable from 1 second all the way to 30 minutes for ultra long term surveys The SPCMini is easy to use clip it on check the load with the on board display set it to log press the start button and you re done It s also clever it wont overwrite any previous surveys without warning you and the logger electronics auto ranges to ensure the highest levels of measurement accuracy at all times Connection to the PC is via Bluetooth just like a mobile phone so there s no need to plug cables into hard to reach sockets The PowerPackPro PC software package has been developed specific
16. ect All function on the menu bar or from the graph toolbar icon El and copy and paste buttons on the toolbar Set Graph Options The graph may be adjusted to reflect the survey parameters and the desired presentation Select Tools Options from the main menu bar to open the options window Data OK Cancel Data interval for analysis aia 7 Initial chart view 1 week gt Set the analysis data interval and initial chart view to match the desired presentation 23 SUMMARY TAB Click the summary tab at the bottom of the chart window to open the survey Summary page z Survey 1 Summary i E Location Main Incomer 15 x Created By ANOTHER From 21 September 2004 09 46 16 To 28 September 2004 09 36 16 Log Interval 30 seconds Logger Type SPC Mini Logger Name LOGGER 1 Logger Number Supply Single Phase Voltage Power Factor i Notes 240 0 9 Sample data Chart Summary Data Statistics Costs The following fields may be edited as required Title Location Created By Voltage Power Factor The supply field may be changed from Single Phase to Three Phase or vice versa via the drop down menu Notes may be added as desired Note that any changes made are indicated by the text changing from black to red The option to save changes appears when exiting from the summary page Click
17. entium 4 or Centrino mobile 2 0 GHz RAM 256MB Display 32 bit colour 1024 x 768 minimum Bluetooth Pre installed or via unused USB port A lower spec PC may provide satisfactory performance but Bluetooth pairing will take longer and the graphing capability particularly with larger surveys will be slower PCs running W2000 will also function with the SPCMini and PowerPackPro and may be used at the user s discretion 1i CONTENTS SPCMini At A Glance INTRODUCTION Description SETTINGS amp USE Changing the Battery The Clip On Ammeter Making Single Phase Measurements Making 3 Phase Measurements The DataLogger switching the Unit Off POWERPACK SOFTWARE Loading the Software PowerPack Pro At A Glance Communicating with the SPCMini Status ie Set Up Download USING THE GRAPHING PACKAGE Selecting the Measurement Unit Using the Graph Tools Chart Tab Zoom Show Data Values Show Alarm Values Show Gridlines Additional Graph Functions Export to Microsoft Office set Graph Options Summary Tab Data Tab se Selecting Data 111 01 02 03 04 04 05 05 07 08 09 10 10 11 12 16 16 17 19 20 20 20 20 21 22 23 23 23 23 24 20 25 Exporting Data Statistics Tab Costs Tab jai Adding amp Amending Tariffs Alarms Tab Po ate BLUETOOTH TROUBLESHOOTING Installing Bluetooth on your PC 25 25 26 26 2 28 28 SPCMini At A Glance Large 3 digit display shows Larg
18. er and finally set up a communication link before the device is confirmed as linked Once the SPCMini appears on the tree it will remain connected to the PC for a maximum of 20 seconds unless a dialogue box is present on the desktop to maintain device communication If the SPCMini disappears the search mode must be restarted using the button top left of the icon bar Bluetooth in E Xi test unit 2 T Logger found please select required action Status Download A If the software does not find any Bluetooth devices you may have a Bluetooth module that is not compatible with this function in PowerPackpro Normally this incompatibility is easy to spot as the Bluetooth icon will not appear in the device tree If this happens it is necessary to approach the initial logger connection slightly differently Close PowerPackPro and utilise the Bluetooth utility already present on the PC to search for available 13 devices The Utility is usually opened via a Bluetooth icon in the System Tray at the bottom right hand side of the PC screen although it may also appear as a desktop icon or as a Bluetooth Services icon in the Control Panel If the Bluetooth function is working on your PC the utility search will find any available devices including the SPCMini which will appear in a window similar to that shown below Add New Connection Wizard Select a device Please choose the Bluetooth
19. luetooth Utility m ra BILL E Debbie If either software finds other Bluetooth devices the problem may be with the SPCMini itself If Bluetooth communications become erratic or slow reboot your PC to re initialise the Bluetooth device 30
20. ociated drivers etc ALWAYS run the set up program on this CD even if you have installed the dongle and Windows advises that it is ready for use This will install additional files that may be necessary for your Bluetooth hardware to work correctly with the SPCMini If you experience problems install the CD a second time TROUBLESHOOTING The SPCMini and its associated software package PowerPackPro have been extensively tested with a variety of PC and Bluetooth combinations and have been found to work reliably in most cases However the Bluetooth interface is a developing field and new combinations of hardware and software are always possible The following pages will provide some valuable tips on how to obtain the best performance from your SPCMini Bluetooth communication lf your are experiencing problems communicating with your SPCMini check the following items first e Shut down any other programs that may be running as these may involve processes that interfere with Bluetooth 28 Check if you can see the SPCMini using the Bluetooth Utility on your PC This is usually opened via a Bluetooth icon ki in the System Tray at bottom right of your PC screen but may also be accessed via a desktop icon or an icon in Control Panel If the SPCMini is found via your Bluetooth Utility but not via PowerPackPro refer to page 13 for detailed instructions on how to proceed Check that Bluetooth is enabled on your PC Click Start
21. s three options Status also available via the icon Battery Voltage 9 44 q BMA AUVAA Pd Senal Number 007150 Logger name max 14 chars SPCmini 001150 Set Logaing Off Log Start 16 21 25 on 22 06 2006 Logging Interval 1 second Records 123 Free memory 100 OK Battery Voltage should read over 7 5V If the reading is lower than this replace the battery Serial number Logger Name shows the logger serial number by default This can be changed to reflect your desired name up to 14 characters The status window will show a red bar if logging is off green if it is on Setup Also via Es icon Computer Time Fri O2 06 2006 11 50 50 Logger Time Fri 02 06 2006 11 50 45 Survey Length H days he fo 4 mins Storage Interval 00 00 08 hhmm Please note logger memory contains 1 data records Set Logger Cancel ced 16 Use this window to set the desired data storage interval survey period Note that a 1 minute interval provides a survey length of approximately 91 days A fully charged battery will provide a minimum of 30 days logging When the set logger button is pressed the unit will be updated with the desired storage interval and the logger clock will be set to the PC clock time NOTE Ensure your PC clock time is correct Download also available via a icon Download Logger Data Step of 7 Download logger data Available loggers Note
22. the logger memory will nat be clearec Check that the logger shown in the available loggers window matches the logger you wish to download or select an alternative if multiple loggers are available STEP 1 Click next to download the data this does not clear the logger memory This is only done via the reset start button on the logger STEP 2 Click next to enter the survey name location and any relevant notes 17 STEP 3 Select 1 phase or 3 phase to match the survey supply type NOTE If the supply type is set to 3 phase PowerPackPro will assume a balanced load condition See page 7 for more details on making 3 phase measurements STEP 4 Enter the supply voltage as a phase to neutral value If the survey was carried out on a 3 phase 3 wire system where no neutral is present it is necessary to enter the value from phase to earth STEP 5 Select a load type or enter the power factor of the load if known STEP 6 lf an additional CT was used its ratio can be entered at this point STEP 7 Select a tariff from the drop down menu for use in cost calculations NOTE PowerPackPro is pre loaded with default single rate and day night tariffs Other tariffs may be added by the user see page 26 Click finish to open a graph showing the survey results i cw
23. therefore suitable for the direct measurement of single phase supplies Single phase cables in the UK will conform to the following colour codes Installations prior to 2005 06 Live Neutral Earth Installations after 2005 06 Live Neutral Earth Appliance Cables In all cases it is the live cable only that must be measured In the case of appliance cables this is easily achieved utilising the SPC Cable Splitter which is available as an accessory from Elcomponent NOTE Clipping the unit around the live and neutral conductors together will not work The SPCMini must be clipped around the live cable only MAKING 3 PHASE MEASUREMENTS Despite its single input limitation the SPCMini may also be used to make measurements of 3 phase supplies as detailed below Three phase systems in the UK will conform to the following colour codes Installations prior to 2005 06 Installations after to 2005 06 PH 1 PH2 PH3 N As the current flowing in each of the three phases can differ it is recommended that the SPCMini be utilised in display mode to establish the actual phase loadings and if they differ the middle loaded phase should be logged Some loads such as electric motors have all three phases loaded equally These loads are generally referred to as balanced and can be logged using any of the three conductors Unbalanced loads cannot be measured 100 accurately by the SPCMini but any inaccuracy is minimised by
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