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measurement mode. When in this mode, only V

12

and V

32

(not V

23

or V

31

) are measured and

displayed.

It is important to note a limitation of operating in phase-phase mode.  The power factor and power
reading for each phase are not necessarily accurate.  This is not due to any accuracy problem with
ATPOL II.  Instead, it is the result of each phase's current being the result of two different phase-phase
voltages, whereas a phase’s power and power factor calculations rely on only one of the phase-phase
voltages.  Therefore, although the power factor and power readings have diagnostic value, they are not
true representations of the actual power factor or power being used for a given phase.  Nevertheless,
the measurements that count most, the total power factor and total power, are correct in phase-phase
mode.  This result may seem surprising, given that the individual phase measurements are not exact,
but the mathematics of combining three equations with three unknowns results in correct total power
factor and total true power measurements.

Changing the Voltage Measurement Mode in ATPOL II

To determine which voltage measurement mode ATPOL II is in, simply press the [Measure Mode] key
of ATPOL II and read the display.  To change the voltage measurement mode from what is displayed,
press the [No/Reject] key and then press [Yes/Accept] when the desired measurement mode is
displayed.

Normally, the 2 current approach is disabled when ATPOL II is shipped to customers.  When disabled,
the choice for operating in this mode will not even be displayed when pressing the [Measure Mode] key.
It can be enabled or disabled as one of the                               administrative functions (see
Administrative Functions).  When it is enabled, pressing [No/Reject] to the Phase-Phase voltage mode
will result in the choice to accept the 2 current approach.  Press [Yes/Accept] to enter this mode.  While
in this mode, V

23

and I

2

will no longer be measured or displayed and V

32

appears in place of V

23

.

The voltage measurement mode that you choose will stay in effect until you change it. It will not be
changed by turning ATPOL II off.

Changing the Voltage Measurement Mode in PSM

To determine the voltage measurement mode using PSM, connect ATPOL II to PSM and then either go
to the Setup Data menu and read what appears in the Voltage Mode box or operate in Remote Control
mode and press the key combinations described above.

To change the voltage measurement mode using PSM, either
go to the Data Setup menu, click on the Voltage Mode drop-
down box, select the mode that you wish to operate in, and
then send the new setup to the connected ATPOL II meter or
operate in Remote Control mode and press the key
combinations described above.

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Содержание ATPOL II

Страница 1: ...3180 info alltestpro com www alltestpro com Rev for FW 5 3f SW 3 4F 2013 by ALL TEST Pro LLC All Rights Reserved ATPOL II is a registered trademark of ALL TEST Pro LLC User s Manual for ATPOL II For P...

Страница 2: ...dedicated to your successful use of the product There are no user serviceable parts in your ATPOL II meter Opening the case voids your warranty and may result in present or future danger to users of...

Страница 3: ...Connecting to Line To DC LDC Converter Accessory 17 Measuring Multiple Parallel Conductors 18 Measuring Currents Below the Range of the Current Probe 19 Turning ATPOL II On 20 Connecting to Power 20...

Страница 4: ...s in ATPOL II 47 Frequency Measurements in PSM 48 Duty Cycle Power Cycle Measurements 48 Duty Cycle Power Cycle Measurements in ATPOL II 49 Time and Capacity Measurements 49 Time and Capacity Measurem...

Страница 5: ...SD Card 74 Restoring the Default Setup 75 Monitoring Swell Dip Inrush 75 Introduction 75 Swell Dip Event Log 76 Swell Dip RMS Graph Log 77 Swell Dip Event Waveforms 78 Setting the Swell Dip Trigger Th...

Страница 6: ...ing it all Together Monitoring for the First Time 94 Working with Graphs and Waveforms 97 General 97 Reading Graphs and Waveforms 98 Zooming and Panning 99 Troubleshooting Frequently Asked Questions F...

Страница 7: ...the key enclosed by square brackets For example the Volt key is referred to as Volt Connecting to ATPOL II Voltage Test Leads A Deluxe Voltage Probe set consisting of four leads is included with each...

Страница 8: ...e an accuracy of 2 3 Also the AT6001 maintains its accuracy for frequencies up to 20 000 Hz With our spectrum analyzer option order FAO it can be used to measure frequencies up to 100 000 Hz riding on...

Страница 9: ...onductor and thus get your hands and arms closer to it than when using HA series clamp on type current probes Wise practice dictates that you use high insulation protection on hands and forearms in th...

Страница 10: ...p on probes have a correct orientation in which to attach them On most probes head there will be an arrow pointing in the direction of the conductor being measured When clamped onto I1 I2 I3 or IN the...

Страница 11: ...he currents figure 8 presents the 2 current approach for measuring power This approach is also useful for measurement of an open delta circuit as described in Connections to an Open Delta Circuit 2PT...

Страница 12: ...e some relatively large number like 120 volts and V3N will be a small voltage like 3 volts If you then reverse the ground and neutral leads V1N will now read slightly less like 117 volts If hot and ne...

Страница 13: ...ding of V1N is of hot neutral and V2N is hot2 neutral IN does not need to be connected and VN should not be connected when the load spans the two phases The power associated with one hot is measured a...

Страница 14: ...ct the neutral voltage to the neutral input for more accurate voltage readings Connecting to Three Phase Four Wire Delta Power Figure 6 presents the recommended connections to a three phase delta syst...

Страница 15: ...a cb c W V I V I This equation is true regardless of the harmonic content of the voltages and currents present A few words of caution are required however First a volt ohmmeter cannot be used for this...

Страница 16: ...e primary voltage is below 600Vrms you will not need to hook up to the PTs in fact there will probably be none present The ratio of the stepping down of the voltage will be printed on the rating plate...

Страница 17: ...se red assemblies contain 1000V fuses They provide protection if a short should occur in the LDC The two voltage leads that would normally be plugged into ATPOL II are plugged into the loose ends of t...

Страница 18: ...Starting Data Logging and Stopping Data Logging sections 3 Press the Current key and then the More key four times to view the average current for phase 1 which is actually just one of the conductors o...

Страница 19: ...the magnetic field strength This can get it in the measurement range and it boosts the signal to noise ratio If you use this method set the input ratio for the current probe to 1 2 see the Changing In...

Страница 20: ...rate the Line to DC converter off of 600V phase to phase service connect one input to a hot phase and the other input to neutral The internal batteries are automatically charged when the wall mount su...

Страница 21: ...your PC ATP sells an adapter but most Bluetooth USB adapters will work Follow the instructions that come with the adapter to install the software Step 1 Connecting to the Meter at the Operating Syste...

Страница 22: ...application If it connects properly you will see a green box appear with the words Unit Connected in it If this automatic connection failed click on the Setup Communication button and set the Serial P...

Страница 23: ...ta that is on the meter When the card is inserted the meter will display Memory Card Present When it is removed the display will be Memory Card Removed If the display ever says Insert Memory Card Agai...

Страница 24: ...rted into many meters there will be many of these folders Monitoring Date Time this folder is created whenever the meter starts monitoring It is located in the Serial Number folder If the meter has ha...

Страница 25: ...d power factor For instance in a perfectly balanced three phase system with 0 92 power factor and no harmonics if the connections of the I1 and I3 probes are switched the true power will fall 33 and t...

Страница 26: ...ne of the display are Single phase Split phase two phase Three phase 4 wire delta For each of those general systems the display indicates whether voltages will be displayed and recorded as phase to ne...

Страница 27: ...l types their explanations and the corrective actions required are Probe not connected The probe that is identified appears to not be connected to ATPOL II Check that the probe is firmly connected to...

Страница 28: ...ls detected The operating frequency may be out of the measurement range of ATPOL II or nothing is connected or the system is deactivated Wrong frequency setting ATPOL II is expecting one frequency but...

Страница 29: ...correct If the measurement mode is phase neutral all measurement labels at the top will be V1N V2N and V3N The first letter after the V is the phase that is connected to and the n stands for neutral...

Страница 30: ...everal questions that need to be answered First are the sizes of each of the three phases reasonable depending on the type of load currents of each phase may be very similar or fairly different The RM...

Страница 31: ...lead it By the time you have gotten to this test you have verified that the voltages and currents are reasonable sizes and that their sequences appear to be correct Now select a view of voltage and cu...

Страница 32: ...ous voltage of the greatest magnitude either positive or negative over a period of time A measure that changes continuously is of limited use A far more useful measurement is RMS voltage wherein a sin...

Страница 33: ...isplayed by repeatedly pressing More after displaying the appropriate present voltage In this way by combining the Volt and More keys there are 12 RMS voltage measurements available For instance if th...

Страница 34: ...ach cycle is graphed and the most extreme measurement with its timestamp is presented at the top When viewing transient waveforms the instantaneous values of the voltage are graphed as with consumptio...

Страница 35: ...d as the square root of the mean of the square of the instantaneous current over one cycle of the fundamental frequency 2 i Irms N When measuring DC amps the RMS value is the same as the DC value Curr...

Страница 36: ...rrent mode I2 is not measured or displayed When measuring DC current the RMS value is the same as the DC value To set ATPOL II for reading DC currents refer to the section on Setting Measurement Modes...

Страница 37: ...rded each second If in phase phase voltage measurement mode the average RMS current of each phase for each second will be displayed and recorded each second The measurements of current presented on AT...

Страница 38: ...quite close to the NEMA approach Imbalance Measurements in PSM PSM performs imbalance calculations on both the voltage and current of a waveform set To view the imbalance measurement open a waveform s...

Страница 39: ...wer type In this way by combining the Power and More keys there are 12 power measurements available For instance if the maximum reactive power is desired press Power to display watts Power to display...

Страница 40: ...t power true app P TPF P or W TPF VA When this ratio is less than 1 00 then reactive power is present Reactive power may be the result of current lagging voltage due to the inductance of the circuit I...

Страница 41: ...also be measured Finally a measurement related to DPF is displacement phase angle The displacement phase angle is the number of degrees that the current at the fundamental frequency lags the voltage...

Страница 42: ...2 and 3 can be displayed To view displacement power factor press Power Factor If the display says Displacement P F then pressing Power Factor repeatedly will allow you to view the displacement power f...

Страница 43: ...o be displayed in PSM by using the remote control feature In addition our Report Generator software will present maximum minimum and average true power factor of each phase and of the total power fact...

Страница 44: ...n the history of consumption estimates of energy use per hour energy use per month and energy use per year are calculated each second These estimates are available by repeatedly pressing More In this...

Страница 45: ...s The estimated cost per hour is the elapsed cost divided by the hours of monitoring For instance if the cost is 0 50 for a 10 minute period then the estimated cost per hour is 60 0 50 3 00 10 est hr...

Страница 46: ...ally evaluate energy usage over fixed increments of time such as 15 minute intervals These time intervals are called demand periods The average power consumed during each demand period is called the d...

Страница 47: ...average frequency of all of the cycles of the most recent second The maximum frequency is the frequency of the shortest cycle fastest repeat time during the time of interest The minimum frequency is...

Страница 48: ...rvals are chosen it will report the percent change and the actual change between the two intervals For instance if a comparison report is chosen and the average frequency is 48 0 Hz during the first i...

Страница 49: ...ber of power cycles For instance if you are monitoring an air conditioning system and wish to know how many times per hour the unit turns on and off press On Off Cycles until the number of power cycle...

Страница 50: ...ny records have been saved since logging began When displayed it will always be accompanied by the record capacity of the log The time and date that monitoring began is the internal clock reading of w...

Страница 51: ...form could be considered to be distorted from a pure sine wave by the addition of harmonic frequencies The total harmonic distortion provides an accurate measure of how distorted from a pure sine wave...

Страница 52: ...r then squared and then summed over the first 50 harmonics 2 50 1 _ h h rms I h K factor I This is a valuable measurement to observe when the heating effect of harmonics is a concern Using the numbers...

Страница 53: ...w suddenly due to temporary or switched conditions in the load or supply of power Examples of this occurring are a current inrush when a motor is first turned on a swell in voltage when the power sour...

Страница 54: ...ts are not periodic and are typically very abrupt changes It makes best sense to measure them by their peak voltage or current and by the duration of time that they exceed the transient threshold ATPO...

Страница 55: ...e difference in potential between one of the phase inputs V1 V2 and V3 and the neutral input VN They are presented as V1N V2N and V3N A phase phase voltage reading is the difference in potential betwe...

Страница 56: ...measurement mode from what is displayed press the No Reject key and then press Yes Accept when the desired measurement mode is displayed Normally the 2 current approach is disabled when ATPOL II is sh...

Страница 57: ...system powered by a utility that does not provide power at a stable standard frequency The variable frequency measurement mode provides accurate true RMS readings of voltage current and power for inp...

Страница 58: ...generating power However there are cases in which you may wish to measure power use on equipment that is alternatively consuming and generating power like an oil well pump jack Always Positive Power...

Страница 59: ...and then either go to the Setup Data menu and read what appears in the Power Mode box or operate in Remote Control mode and press the key combinations described above To change the power measurement m...

Страница 60: ...ues you can measure anything with ATPOL II The measurement range extends from 1 milliamp to more than 4 million amps 1 volt to more than 4 000 kilovolts 1 watt to more than 40 megawatts Note When ATPO...

Страница 61: ...I1 current probe Get to the Input Configuration screen and double click on the I1 row If the ratio of the CT is 600 5 simply enter 600 in the first column and 5 in the second column of Input Ratio If...

Страница 62: ...rents are recorded for 50 milliseconds This time coincident snapshot of 7 waveforms is called a waveform set Please Note When operating in one of the 400 Hz operating modes the waveforms are recorded...

Страница 63: ...u you can either click on the Receive Data button or on the Data dropdown button and then Receive Data In either case the Receive Data menu will open and all the different types of data files in the c...

Страница 64: ...e standard Windows methods for changing the directory that is shown Next select a specific waveset by double clicking on it When you select a waveset to view the Select Signals to View window pops ope...

Страница 65: ...presentations into a waveform presentation either click on the Waveform icon or click on View then Waveform You can easily display a phasor diagram of the signals by either clicking on the phasor ico...

Страница 66: ...se 1 phase 2 phase 3 and then phases 1 2 3 together Sometimes current probes are attached backwards and the resulting waveforms are 180 degrees phase shifted There is a convenient way of correcting th...

Страница 67: ...s the minimum one cycle measurement since monitoring began The minimum value that is recorded into each record of the consumption log is the minimum one cycle measurement during that logging period To...

Страница 68: ...was chosen because it allows you to log for a reasonably long period of time with a reasonably short period between records Of course your needs may vary from this in which case you can easily custom...

Страница 69: ...inues long enough to fill the data log the default is for each new record to be written over the oldest record of the log In this way you could leave a unit logging unattended for months and always ha...

Страница 70: ...nging the directory that is shown Next select a specific consumption log by double clicking on it When you select a consumption log to view the Select Signals to View window pops open You must make a...

Страница 71: ...terisks appearing on both ends of the bottom line of the ATPOL II display The other methods of starting logging can be set within the Data Setup screen by clicking on the Log Start Mode dropdown box F...

Страница 72: ...ng all the measurement types specified by the setup If maximum power is one of the measurement types then the maximum power of all of the cycles during the preceding 180 seconds will be recorded into...

Страница 73: ...o add or remove from the log setup is as simple as clicking on the box next to the measurement type In the illustration shown you can see that the average power factor of phase 3 is selected because t...

Страница 74: ...you move from location to location To load a data setup into the meter from an SD card load the data setup file onto the SD card in an accessible place Data setup files end with the file extension st...

Страница 75: ...enu and use the Remote Control screen to virtually press the keys as described in the previous paragraph The third method is to connect the meter to PSM click on the Data Setup button at the main menu...

Страница 76: ...ation it must be uploaded from ATPOL II to your computer using the PSM software The data is recorded into files in a plain text format that may be easily imported into spreadsheets databases and word...

Страница 77: ...rding of the RMS level of the signal starting 2 cycles before the trigger threshold is passed and continuing for 48 cycles or until the first cycle that did not exceed the trigger threshold and was fo...

Страница 78: ...ng this the voltage dip trigger level is displayed Press No Reject if you wish to change it The display will be Would you like a suggestion If you press Yes Accept it will suggest a trigger 5 below wh...

Страница 79: ...1 ARMS or higher then the threshold will have been passed triggering will occur and the event will be considered to have started When the current in this example falls to slightly less than 15 ARMS th...

Страница 80: ...entry in the File Name box For instance if psm is entered in the File Name box the swell dip log will be called psm slg and the third swell dip waveform will be called psm03 swm If you want some file...

Страница 81: ...ed from consideration and the remaining transient signal is examined to see if it exceeds the relative trigger level in this case above 20V or below 20V There are two types of recordings of high speed...

Страница 82: ...nt of magnitude vs calendar timeframe allows spotting times of day that events occur and noticing if events are of similar magnitudes To view transient magnitude vs time click on the magnitude icon To...

Страница 83: ...Reject it allows you to use the keypad to enter an instantaneous current value of your choice Press Yes Accept when you are done Following this the relative current transient trigger level is display...

Страница 84: ...determining the relative threshold for a given circuit Click on the icon to the right of the box in which you enter the relative trigger threshold The Calculation of Instantaneous dialogue box will o...

Страница 85: ...arks to their left click on the Receive and View button to transfer the data from ATPOL II to PSM and immediately start looking at the data Or click on the Receive Only button to simply receive the da...

Страница 86: ...t of memory to hold more consumption records and therefore last more time If you are saving the variables that you need to but still don t have enough memory click on the Reallocate Memory button at t...

Страница 87: ...from one consumption log This is great for preparing a report of a load study A comparison report compares data from one log to the data of another log Or it compares one section of data of a log to a...

Страница 88: ...isfied with the selections click on Next to obtain the report Viewing a Report The report appears on screen and is in a rich text format You can edit and format the report within any word processing a...

Страница 89: ...percent the before data has changed in going from before to after A negative number represents a decrease Therefore the example shows an estimated cost savings of 4 9 which represents a project saving...

Страница 90: ...e Setup key They include battery status checkout of connections and wiring setting the threshold trigger levels setting the log interval setting the utility rate setting the on off current level Press...

Страница 91: ...the following being displayed Serial number of the unit its unique identity Digital Processing revision level algorithms used for measurement Firmware revision level what level of software is active w...

Страница 92: ...ng the 2 current approach also known as the 2 wattmeter power method is left at the end of the choices since it is unlikely to ever be used The advantages and disadvantages of the 2 current mode were...

Страница 93: ...display are visible on your computer screen This is very handy for operating a unit remotely and for operating and displaying the readings of a unit to many people at one time To enter the remote cont...

Страница 94: ...portant for synchronizing multiple ATPOL II units in order to correlate logs and events from several units located at different points at a site It also results in nice presentations of logs from site...

Страница 95: ...words Unit Connected appearing within a large green banner Note that the box also says Serial Comm enabled and Datalogging enabled 3 Click on Data Setup and review the setup that is in ATPOL II Review...

Страница 96: ...you intend to have ATPOL II start monitoring by direct command via the keypad or via PSM this is the time to do it Otherwise it will start when the programmed start time occurs 6 When satisfied that a...

Страница 97: ...nning Viewing data In order to ease selecting the signal you wish to see and to avoid cluttering the presentation we use an approach of primary choice and secondary choice This is a simple two step pr...

Страница 98: ...d Examples of the various graphs and what the various sections mean follow 1 The name of the file that is being displayed appears in the top border If you want to determine what directory the file is...

Страница 99: ...r a swell dip waveform except the values are in instantaneous levels rather than RMS levels 8 Information specific to the position of the cursor is displayed For instance when the cursor is positioned...

Страница 100: ...med in portion of the sample log has the cursor positioned above a special point of interest a point where one of the peaks in the power occurs Looking at the circled information you can quickly ident...

Страница 101: ...POL II displays the charge of the battery and the estimated time of charge when you press the Setup button The ATPOL II is fully charged in about 3 4 hours The battery should not need replacement for...

Страница 102: ...log capacity is set to 1000 records and its logging interval is set to 1 minute the meter will fill the data log in 1 000 minutes Each record in the log will contain the maximum minimum and average o...

Страница 103: ...pturing On Line Motor Data To perform the motor diagnostics your ATPOL II must have this option loaded into it Viewing the options display on the meter it must present something like HLS4MT7 The T mea...

Страница 104: ...data This will take about a minute To receive the motor data click on the Receive Data button on the main menu of PSM click on the line that shows motor data records listed and then receive the data T...

Страница 105: ...ack of ATPOL II To measure high frequency current plug the special adapter cable that comes with this option into the I1 jack plug the AT6001 into the other end of the adapter cable and remove all con...

Страница 106: ...placement power factor combine it with the More button for more information Demand Period amount of demand and time of peak demand period combine it with the More button for more information Time pres...

Страница 107: ...1 of reading over input range 0 3 Vrms Measure Rate Measure every cycle of every input Frequency Response No de rating of accuracy for harmonics through 3900 Hz Current Input Range 0 01 5000 Amps AC...

Страница 108: ...re every cycle of every input Swell Dip Detection Measure Rate Measured every cycle of every input High speed Transient Detection Measure Rate Measured every 8 sec on every input Captured Waveforms Qu...

Страница 109: ...109...

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