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AEMC PowerPad 8435 User Manual

3-phase power quality analyzer
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8435
3-PHASE POWER QUALITY
n
ANALYZER
®
PowerPad
IMPORTANT WARRANTY NOTE:
By registering online within 30 days from the date of
purchase, your warranty will be extended to 3 years
E N G L I S H
User Manual
GlobalTestSupply
www.
.com
Find Quality Products Online at:
sales@GlobalTestSupply.com

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  • Page 1 8435 3-PHASE POWER QUALITY ANALYZER ® PowerPad IMPORTANT WARRANTY NOTE: By registering online within 30 days from the date of purchase, your warranty will be extended to 3 years E N G L I S H User Manual GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 2 Thank you for purchasing a PowerPad III Model 8435 ® For best results from your instrument and for your safety, read the enclosed operating instructions carefully and comply with the precautions for use. These products must be only used by qualified and trained users. WARNING, risk of DANGER! The operator must refer to these instructions whenever this danger symbol appears.
  • Page 3 READ CAREFULLY BEFORE USING FOR THE FIRST TIME Your instrument is equipped with a NiMH battery. This technology offers several advantages: ● Long battery charge life for a limited volume and weight. ● Possibility of quickly recharging your battery. ● Significantly reduced memory effect: you can recharge your battery even if it is not fully discharged. ●...

  • Page 4: Table Of Contents

    TABLE OF CONTENTS 1. INTRODUCTION .............................. 7 1.1 RECEIVING YOUR SHIPMENT ..............................7 1.2 ORDERING INFORMATION ............................... 7 1.2.1 ACCESSORIES ................................7 1.2.2 REPLACEMENT PARTS ..............................7 2. PRODUCT FEATURES ............................ 8 2.1 DESCRIPTION .................................... 8 2.2 KEY FEATURES ..................................8 2.3 CONTROL FUNCTIONS ................................
  • Page 5 4.1.1.1 PROGRAMMING AND STARTING A SEARCH ....................35 4.1.1.2 STOPPING A SEARCH ............................36 4.1.1.3 DISPLAYING A TRANSIENT ..........................37 4.1.1.4 DELETING A TRANSIENT ............................ 38 4.1.2 INRUSH CURRENT MODE ............................38 4.1.2.1 PROGRAMMING A CAPTURE ..........................39 4.1.2.2 STARTING A CAPTURE ............................40 4.1.2.3 MANUALLY STOPPING A CAPTURE ........................
  • Page 6 4.4.2 STARTING AN ALARM ..............................62 4.4.3 MANUALLY STOPPING AN ALARM ..........................62 4.4.4 DISPLAYING AN ALARM LOG ............................62 4.4.5 DELETING AN ALARM LOG ............................63 4.5 TREND MODE ................................... 63 4.5.1 PROGRAMMING AND STARTING A RECORDING ..................... 63 4.5.2 MANUALLY STOPPING A RECORDING ........................
  • Page 7 5.6.4 TRANSIENTS ................................88 5.6.5 INRUSH ..................................88 5.6.6 EDITING DOWNLOADED DATA ........................... 89 6. SPECIFICATIONS ............................90 6.1 REFERENCE CONDITIONS ..............................90 6.2 ELECTRICAL SPECIFICATIONS .............................. 91 6.2.1 VOLTAGE INPUTS ................................ 91 6.2.2 CURRENT INPUTS ............................... 91 6.2.3 ACCURACY SPECIFICATIONS (EXCLUDING CURRENT PROBES) ................. 91 6.2.4 CURRENT PROBE ACCURACY (TO BE ADDED TO THE MODEL 8435’S ACCURACY) ..........
  • Page 8 A.1.4 POWERS ..................................116 A.1.4.1 DISTRIBUTION SYSTEM WITH NEUTRAL .......................116 A.1.4.2 THREE-PHASE SYSTEM WITHOUT NEUTRAL ....................117 A.1.4.3 TWO-PHASE SYSTEMS WITHOUT NEUTRAL ....................119 A.1.5 POWER RATIOS (EXCLUDING NEUTRAL – OVER ONE SECOND) ............... 120 A.1.5.1 DISTRIBUTION SYSTEM WITH NEUTRAL ...................... 120 A.1.5.2 THREE-PHASE SYSTEM WITHOUT NEUTRAL ....................121 A.1.5.3 TWO-PHASE SYSTEM WITHOUT NEUTRAL ....................

  • Page 9: Introduction

    1. INTRODUCTION 1.1 RECEIVING YOUR SHIPMENT NOTE: After receiving your PowerPad III Model 8435, charge and discharge the instrument one or two cycles to ensure the ® proper level display of the battery indicator. Make sure the contents shipped are consistent with the packing list. Notify your distributor of any missing items. If the equipment appears damaged, file a claim immediately with the carrier and notify your distributor at once.

  • Page 10: Product Features

    2. PRODUCT FEATURES 2.1 DESCRIPTION The easy-to-use, compact and shock-resistant PowerPad III Model 8435 is a three-phase power quality analyzer ® equipped with four current inputs and five voltage inputs. It is intended for technicians and engineers to measure and carry out diagnostic work and power quality work on one, two or three phase low voltage networks.
  • Page 11 ■ Direct measurement of neutral current for WYE configurations ■ Record and display trend data as fast as once per second for one month for up to 25 variables. It is recommended to limit recordings to under 100MB to reduce downtime ■...

  • Page 12: Control Functions

    2.3 CONTROL FUNCTIONS Figure 2-1 1. Protective cover 7. LCD Display 2. Battery charging connector 8. USB port 3. Six variable function buttons (yellow) 9. Confirm/Enter button (gray) 4. Four function buttons (gray) 10. Navigation buttons (gray) 5. ON/OFF button (gray) 11.

  • Page 13: Display

    2.5 DISPLAY The Model 8435 includes a 320 x 240 pixel LCD display. 02/06/14 Figure 2-3 1. Top bar on the display, including: ● Symbol of the tested mode ( , etc.) ● Frequency of measured signal ● Memory capacity status bar (only available in certain modes) ●...

  • Page 14: Button Functions

    Description Icon Voltage mode (phase-to-phase) Zoom in Zoom out < > Left/right key prompt Up/down key prompt PF... Display of PF, DPF and Tan. W... Active power Recording mode Recording display and selection mode Validation prompt Stop function in progress prompt Display of energy consumed Display of energy generated Screen 1 of the help function...
  • Page 15 Trend Mode: • Lists all recording trends and views them on the display (Urms, Vrms, Arms, etc.) Power / Energy: • Displays power levels and the associated parameters (power factor, displacement, and tangent) • Energy monitoring • Four quadrant measurement to discern produced/consumed active energy and inductive/capacitive reactive energy Return to the choice of measurement view Configure the PowerPad III Model 8435 (see §...

  • Page 16: Operation

    3. OPERATION 3.1 GETTING STARTED Fully charge the battery before the first use. NOTE: A full recharge of a completely discharged battery takes approximately 5 hours. 120V ± 10%, 60Hz 230V ± 10%, 50Hz To recharge the battery: 1. Unscrew the cover of the power charging connector. 2.

  • Page 17: (Set-Up Mode)

    3.2 INSTRUMENT CONFIGURATION (SET-UP MODE) NOTE: All configurations can also be modified through DataView software. ® The instrument must be configured the first time it is used. The configuration is saved in memory when the instrument is turned OFF. 1. Press the button to configure the unit.

  • Page 18: Date/Time

    Probes and Ratios Defines the type of current probe to connect (see § 3.2.5) • MN93: 200A • MN193: 100A or 5A (with variable ratio) • SR193: 1000A • SL261: 10A and 100A range • AmpFlex Sensors: 3000A (measures up to 6500Arms) ®...

  • Page 19: Display

    3.2.2 DISPLAY 3.2.2.1 CONTRAST/BRIGHTNESS menu is used to define the contrast and brightness of the display unit. Figure 3-3 The selected field is highlighted in yellow. ■ To modify the contrast, press ◄ or ► ■ To move to the next field, press ▲ or ▼ ■...

  • Page 20: Display Shutdown (Auto Power Off)

    3.2.2.3 DISPLAY SHUTDOWN (AUTO POWER OFF) The Display Shutdown button displays a menu that defines the screen shutdown process. Figure 4-5 Use the up and down arrow buttons to choose Automatic or Never. ■ In Automatic mode the display screen switches OFF automatically after five minutes of inactivity when the instrument is powered by the battery and a recording is in progress, and after ten minutes if no recording is in progress.

  • Page 21: Energy Unit

    3.2.3.1 ENERGY UNIT This Wh screen determines the units to be used to display calculation results. Figure 3-7 To select the units, press ▲ or ▼. Choices are: ■ Wh ■ Joule (Watt/second) ■ Nuclear toe (Tonne Oil Equipment) ■ Non-nuclear toe ■...

  • Page 22: Phase Harmonic Ratios

    3.2.3.3 PHASE HARMONIC RATIOS You can choose to calculate, display, and report harmonics as a ratio of the fundamental value, or in absolute value. Figure 3-9 Press ▲ or ▼ to toggle between Fundamental Value as Reference (%f) and Total Value as Reference (%r). Press to save the setting and return to the Configuration menu.

  • Page 23: Electrical Hook-Up

    3.2.4 ELECTRICAL HOOK-UP menu is used to define how the instrument is connected, according to the type of network. 03/10/14 10:26 3Φ ELECTRICAL HOOK-UP 3-phase 5-wire V1V2 V2V3 V3V1 Figure 4-11 Several electrical diagrams can be selected. Use the arrow buttons to choose a connection. One or more types of network correspond to each distribution system.
  • Page 24 Distribution System Source Split-phase 3-wire non-grounded neutral 3-phase open star 3-wire non-grounded neutral Split-phase 3-wire (L1, L2 and N) 3-phase high leg delta 3-wire non-grounded neutral 3-phase open high leg delta 3-wire non-grounded neutral Split-phase 4-wire grounded neutral 3-phase open star 4-wire grounded neutral Split-phase 4-wire (L1, L2, N and ground) 3-phase high leg delta 4-wire grounded neutral 3-phase open high leg delta 4-wire grounded neutral...
  • Page 25 Distribution System Source 3-phase star 3-wire 3-phase delta 3-wire 3-phase 3-wire (L1, L2 and L3) A1A2 A2A3 3-phase open delta 3-wire A3A1 Indicate which 2 current sensors will be connected: A1 and A2, or A2 and A3, or A3 and A1. 3-phase open delta 3-wire grounded junction of phases Two-wattmeter method or two-element method or Aron method.
  • Page 26 Distribution System Source 3-phase star 4-wire non-grounded neutral 3-phase 4-wire (L1, L2, L3 and N) V1V2 V2V3 V3V1 3-phase open high leg delta 4-wire non-grounded neutral Indicate which voltages will be connected: all 3 (3V) or only 2 (V1 and V2, or V2 and V3, or V3 and V1).

  • Page 27: Probes And Ratios

    3.2.5 PROBES AND RATIOS 3.2.5.1 CURRENT PROBES screen defines the current probes and ratios. It automatically displays the current probe models detected by the instrument. It can also be used to define the transformation ratio (sensitivity) of certain current sensors (SL261 clamp). To select current probes and current ratios settings, press the A button to display the following screen: Figure 3-12 The probe choices that are available are:...

  • Page 28: Voltage Ratios

    3.2.5.2 VOLTAGE RATIOS screen also enables you to define the voltage ratios. To do this, press the V button to display the following screen. Figure 3-13 The ratios can be programmed to be the same in all channels, or different in one or more of them. The following steps describe a 3-phase 5-wire hook-up;...

  • Page 29: Capture Mode

    3.2.6 CAPTURE MODE Capture Mode screen defines voltage and current thresholds for transient and Inrush captures. 3.2.6.1 TRANSIENT VOLTAGE THRESHOLDS By default, the Capture Mode screen opens with the Transient Voltage Thresholds screen displayed. Figure 3-14 1. Select Threshold Set-up, highlighted in yellow, by pressing .

  • Page 30: Transient Current Thresholds

    3.2.6.2 TRANSIENT CURRENT THRESHOLDS To display the Transient Current Thresholds screen, open the Capture Mode screen and press the A button. Figure 3-15 1. The process for setting the transient current threshold is similar to setting the transient voltage threshold. Select Threshold Set-up, highlighted in yellow, by pressing .

  • Page 31: Inrush Current Thresholds

    3.2.6.3 INRUSH CURRENT THRESHOLDS You can also set Inrush current thresholds from the Capture Mode screen To do this, press the button. Figure 3-16 This screen defines the Inrush current thresholds for each recognized current probe. The thresholds can be the same for all channels or different for some or all of them.

  • Page 32: Trend Mode

    3.2.7 TREND MODE The Model 8435 has a recording function button for recording measured and calculated values (Urms, Vrms, Arms, etc.). Four independent configurations can be configured as needed. To do this, select Trend Mode from the Configuration menu to display the following screen: Figure 3-17 The recordable values are: Value...
  • Page 33 Athdf Full harmonic distortion of current Aunb Current unbalance (2φ, 3φ) Uthdr Phase to phase voltage total harmonic distortions Vthdr Phase to neutral voltage total harmonic distortions Athdr Current total harmonic distortions Network frequency Phase-to-phase harmonics Phase-to-neutral harmonics Phase current harmonics VA-h Apparent power harmonics To activate these parameters:...

  • Page 34: Alarm Mode Configuration

    3.2.8 ALARM MODE CONFIGURATION screen defines the alarms used by the Alarm Mode function (see § 4.4). You can configure 40 different alarms. Figure 3-18 1. There are five user-defined parameters on each page. Initially each parameter name appears as a question mark (?). Select the alarm number you want to modify using the ▲...

  • Page 35: Erasing Memory

    3.2.9 ERASING MEMORY When Erase Memory is selected, the following screen appears: Figure 3-19 There are six types of data stored in the Model 8435 memory: ■ Trend Recordings ■ Transient Detections ■ Inrush Current Capture ■ Alarm Detections ■ Snapshots ■...

  • Page 36: About

    3.2.10 ABOUT About screen displays information about the Model 8435 instrument: Figure 3-20 Power Quality Analyzer PowerPad ® III Model 8435 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 37: Display Modes

    4. DISPLAY MODES To select parameters in all modes, use the ◄ ►▲▼ buttons to move to the desired parameter and use the button to confirm selections. 4.1 WAVEFORM CAPTURE MODE Press the Waveform Display mode button. The Waveform Capture screen appears. Figure 4-1 Select either the Transient mode (§...

  • Page 38: Stopping A Search

    Item Function Reminder of the mode used Display of sub-mode used Flashing icon: indicates that the search has been started Memory indicator. Black area = used memory; White area = available memory Transients search start time Transients search end time Number of transients Name of transient To configure and start the programming of a search:...

  • Page 39: Displaying A Transient

    4.1.1.3 DISPLAYING A TRANSIENT To display the recorded transient, proceed as follows: 1. Display the Detection List screen by pressing the button. Figure 4-3 Item Function The displayed value indicates the page number and the number of pages. These icons let you browse through the previous and next screens. Press the yellow buttons corresponding to these icons to display the pages.

  • Page 40: Deleting A Transient

    Figure 4-5 Item Function Selection of display filters - 4V: displays the 4 single voltages during the transient (here in a 5-wire tri-phase connection) - 4A: displays the 3 phase currents and the neutral current during the transient - L1, L2 or L3: displays the current and the single voltage successively in relation to phases 1, 2 and 3 - N: displays neutral Instantaneous value of the signals according to the position of the cursor on the scale.

  • Page 41: Programming A Capture

    4.1.2.1 PROGRAMMING A CAPTURE To program the capture of an Inrush current, proceed as follows: 1. At the Waveform Capture screen, select Inrush Current. The Capture Schedule screen is displayed. Figure 4-6 Item Function Reminder of the mode used Display of sub-mode used Current date and time Battery charge level Rapid programming and starting of a capture.

  • Page 42: Starting A Capture

    4.1.2.2 STARTING A CAPTURE As noted in the preceding table, you can press the button to start a recording immediately. When you do this, the current threshold is set to 0A and the hysteresis is 100%. To start the capture at a previously specified date and time, press the button.

  • Page 43: True Rms Current And Voltage

    In the RMS display, the available information is: ● The instantaneous frequency at the time indicated by the cursor. ● The minimum, mean, and maximum instantaneous values of the frequency over the entire capture. ● The RMS current and voltage in the half-cycle (or lobe) on which the cursor is positioned. ●...

  • Page 44: Rms Display Screen (L1)

    4.1.3.2 RMS DISPLAY SCREEN (L1) Figure 4-9 Item Function Instantaneous value cursor; change values with the cursor using the ◄ and ► buttons - t: relative time position of the cursor (t = 0 corresponds to the start of the Inrush capture) - Values at the position of the cursor.

  • Page 45: Instantaneous Inrush Current

    4.1.4 INSTANTANEOUS INRUSH CURRENT The PEAK mode is used to display the envelopes and waveforms of the Inrush current capture. 4.1.4.1 PEAK DISPLAY SCREEN (4A) The PEAK display of an Inrush current capture provides two possible types: Envelope and Waveform. Switching between the two types is automatic, and is determined by the zoom.

  • Page 46: Peak Display Screen (A1)

    4.1.4.2 PEAK DISPLAY SCREEN (A1) Figure 4-11 Item Function Instantaneous value cursor; change values with the cursor using the ◄ and ► buttons - t: relative time position of the cursor (t = 0 corresponds to the start of the Inrush capture) - Values at the position of the cursor.

  • Page 47: Phase-To-Neutral Harmonics Display Screen (3L)

    4.2.1.1 PHASE-TO-NEUTRAL HARMONICS DISPLAY SCREEN (3L) Figure 4-12 Item Function Harmonic selection cursor; change values with the cursor using the ◄ and ►buttons The horizontal axis indicates the orders of the harmonics (odd marking). Display of the level of the harmonics as a percentage of the fundamental (order 1) - DC: DC component - 1 to 25: harmonics of order 1 to 25;...

  • Page 48: Current

    - Vh 03: harmonic number %: ratio of the harmonic to the fundamental V: RMS voltage of the harmonic in question +000°: phase shift with respect to the fundamental (order 1) max – min: maximum and minimum levels of the harmonic in question (reset when the harmonic number is changed or the button is pressed) THD: total harmonic distortion...

  • Page 49: Current Harmonics Display Screen (L1)

    4.2.2.2 CURRENT HARMONICS DISPLAY SCREEN (L1) Figure 4-15 Item Function Harmonic selection cursor; change values with the cursor using the ◄ and ►buttons The horizontal axis indicates the orders of the harmonics (odd marking). Display of the level of the harmonics as a percentage of the fundamental (order 1) - DC: DC component - 1 to 25: harmonics of order 1 to 25;...

  • Page 50: Apparent Power

    4.2.3 APPARENT POWER The VA sub-menu displays the harmonics of the apparent power. 4.2.3.1 APPARENT POWER HARMONICS DISPLAY SCREEN (3L) 02/06/14 Figure 4-16 Item Function Harmonic selection cursor; change values with the cursor using the ◄ and ►buttons The horizontal axis indicates the orders of the harmonics (odd marking). Display of the level of the harmonics as a percentage of the fundamental (order 1) - DC: DC component - 1 to 25: harmonics of order 1 to 25;...

  • Page 51: Phase-To-Phase Voltage

    Item Function Harmonic selection cursor; change values with the cursor using the ◄ and ►buttons The horizontal axis indicates the orders of the harmonics (odd marking). Display of the level of the harmonics as a percentage of the fundamental (order 1) - DC: DC component - 1 to 25: harmonics of order 1 to 25;...

  • Page 52: Phase-To-Phase Voltage Display Screen (L1)

    4.2.4.2 PHASE-TO-PHASE VOLTAGE DISPLAY SCREEN (L1) Figure 4-19 Item Function Harmonic selection cursor; change values with the cursor using the ◄ and ►buttons The horizontal axis indicates the orders of the harmonics (odd marking). Display of the level of the harmonics as a percentage of the fundamental (order 1) - DC: DC component - 1 to 25: harmonics of order 1 to 25;...

  • Page 53: Harmonic Analysis In Expert Mode

    4.2.5 HARMONIC ANALYSIS IN EXPERT MODE The -,+ (Expert) mode is available with a 3-Phase connection only. It is used to display the influence of the harmonics on the heating of the neutral and on rotating machines. Press on the ▲▼ buttons to select “-.+” and then either the V or A sub-menu. Example of a typical display: Figure 4-20 ■...

  • Page 54: Rms Measurement

    4.3.1 RMS MEASUREMENT This sub-menu displays the waveforms over a period of the measured signals and the true effective values of the voltage and the current. The choice of graphs to be displayed depends on the type of electrical connection that was set up during the configuration (see §...

  • Page 55: Rms Display Screen (4V)

    4.3.1.2 RMS DISPLAY SCREEN (4V) This screen displays the three phase-to-phase voltages and the neutral-to-earth voltage of a 3-phase system. 02/06/14 Figure 4-23 Item Function Instantaneous value cursor; change values with the cursor using the ◄ and ► buttons Effective phase-to-neutral voltages Instantaneous value of the signals at the intersection of the cursor and the curves t: time relative to the start of the period (expressed in milliseconds) V1: instantaneous phase-to-neutral voltage of curve 1...

  • Page 56: Rms Display Screen (Neutral)

    4.3.1.4 RMS DISPLAY SCREEN (NEUTRAL) This screen displays the neutral voltage relative to earth and the neutral current. 02/06/14 Figure 4-25 Item Function Instantaneous value cursor; change values with the cursor using the ◄ and ► buttons Effective values of currents Instantaneous value of the signals at the intersection of the cursor and the graphs t: time relative to the start of the period (expressed in milliseconds) VN: instantaneous neutral voltage...

  • Page 57: Thd Display Screen (3V)

    Item Function Instantaneous value cursor; change values with the cursor using the ◄ and ► buttons Harmonic distortion rate for each curve Instantaneous value of the signals at the intersection of the cursor and the curves t: time relative to the start of the period (expressed in milliseconds) U1: instantaneous phase-to-phase voltage between phases 1 and 2 (U U2: instantaneous phase-to-phase voltage between phases 2 and 3 (U U3: instantaneous phase-to-phase voltage between phases 3 and 1 (U...

  • Page 58: Measurement Of The Peak Factor (Cf)

    Item Function Instantaneous value cursor; change values with the cursor using the ◄ and ► buttons Harmonic distortion rate for each curve Instantaneous value of the signals at the intersection of the cursor and the curves t: time relative to the start of the period (expressed in milliseconds) A1: instantaneous current of phase 1 A2: instantaneous current of phase 2 A3: instantaneous current of phase 3...

  • Page 59: Cf Display Screen (3V)

    4.3.3.2 CF DISPLAY SCREEN (3V) This screen displays the phase-to-neutral voltage waveforms of one period and the peak factors. 02/06/14 Figure 4-30 Item Function Instantaneous value cursor; change values with the cursor using the ◄ and ► buttons Peak factor for each curve Instantaneous value of the signals at the intersection of the cursor and the curves t: time relative to the start of the period (expressed in milliseconds) V1: instantaneous phase-to-neutral voltage of phase 1...

  • Page 60: Measurement Of Min/Max/Average/Voltage/Current Values

    4.3.4 MEASUREMENT OF MIN, MAX, AVERAGE, VOLTAGE AND CURRENT VALUES This sub-menu displays the RMS, maximum, minimum and average values for voltage and current, together with those for the instantaneous positive and negative voltage and current peaks. NOTE: The display screen varies depending on which value is selected. ■...

  • Page 61: Simultaneous Display

    4.3.5 SIMULTANEOUS DISPLAY This sub-menu displays all the voltage and current measurements (RMS, DC, THD, DF, CF, PST, KF). NOTE: The display screen varies depending on which value is selected. ■ 3U: Displays the RMS, DC, THD, DF, and CF values of the phase-to-phase voltages. ■...

  • Page 62: Display Of Phasor Diagram

    4.3.6 DISPLAY OF PHASOR DIAGRAM This sub-menu displays the absolute values of the voltages and currents at the fundamental frequency, the phase displacement of the voltages relative to the currents and the unbalances of the voltages and currents. NOTE: The display screen varies depending on which value is selected. ■...

  • Page 63: Alarm Mode

    4.4 ALARM MODE This mode detects the type of alarm that you wish to monitor (Vah, Ah, Uh, Vh, Tan, PF, DPF, VA, VAR, W, Athd, Uthd, Vthd, KF, Hz, Aunb, Vunb, Vrms, Acf, Ucf, Vcf, PST, Arms Urms and Vrms – see Appendix B: Glossary of Terms). All alarms recorded can be downloaded to a PC with DataView®...

  • Page 64: Starting An Alarm

    4.4.2 STARTING AN ALARM 1. Press the icon’s yellow button to launch the alarm campaign between the start and end times that you specified. 2. The icon disappears and the icon appears instead. 3. The Detection on standby message is displayed while awaiting start time and the icon blinks on the screen’s top display bar.

  • Page 65: Deleting An Alarm Log

    4.4.5 DELETING AN ALARM LOG 1. Press the icon’s yellow button. 2. Select the alarm to be deleted using the ▲ or ▼ button, then press the button to confirm deletion. To leave this screen without deleting any alarm, press the button.

  • Page 66: Manually Stopping A Recording

    4.5.2 MANUALLY STOPPING A RECORDING An alarm can be manually stopped by pressing the icon’s yellow button. The icon will reappear in the same location. 4.5.3 DISPLAYING THE RECORDING LIST Press the icon’s yellow button to view the recording list. Figure 4-38 Item Function Recording name...

  • Page 67: Filter

    Figure 4-39 At the bottom of the Power and Energy screen are several buttons: Item Function W... Power PF... Power Factor (this button is only available for the 3L filter) Wh... Energy Meters (this button is not available for the 3L filter) Energy consumed (active, reactive, and apparent power) (this button is only available for the 3L filter) Energy generated (active, reactive, and apparent power) (this button is only available for the 3L filter) Each of these buttons displays a sub-screen containing power and energy values.

  • Page 68: Power Factor

    4.6.1.1 3L POWER FACTOR The PF (Power Factor) screen displays the quantities associated with powers. Figure 4-40 The values in this screen are as follows: Item Function Power factor cos F Fundamental power factor (also called DPF - displacement factor) tan F Phase shift of the voltage with respect to current Phase shift of phase-to-neutral voltage with respect to current...

  • Page 69: Energy Generated

    The values in this screen are as follows: Item Function Active energy consumed VARh Reactive energy consumed Distortion energy. This value only appears when the Non-Active Values setting is set to Separated in the VAR tab of the Calculation VADh Methods screen.

  • Page 70: L1, L2, And L3 Filters

    4.6.2 L1, L2, AND L3 FILTERS The screens that appear when the L1, L2, or L3 filter is selected all display the same variables. When any of these filters is selected, the Powers screen appears as shown in Figure 4-43: Figure 4-43 The values in this screen are as follows: Item...

  • Page 71: L1, L2, L3 Energy Meters

    4.6.2.1 L1, L2, L3 ENERGY METERS The Wh... screen displays the energy meters. Figure 4-44 The values in this screen are as follows: Item Function Meters of the energy consumed by the load Meters of the energy generated by the load Active energy VARh Reactive energy...

  • Page 72: Σenergy Meters

    The values in this screen are as follows: Item Function Active power Reactive power Distortion power. This value only appears when the Non-Active Values setting is set to Separated in the VAR tab of the Calculation Methods screen. If this setting is set to Combined, the VAD value does not appear and the VAR label corresponds to the non-active power (N).

  • Page 73: Starting And Stopping Energy Measurements

    4.6.4 STARTING AND STOPPING ENERGY MEASUREMENTS To start a measurement: 1. Press the button while in an energy display ( , or Wh...). The date and time at which the measuring starts will appear in the upper left corner of the screen, and the icon on the screen blinks to indicate that energy metering is in progress.

  • Page 74: Deleting A Snapshot

    ■ Use the ▲ or ▼ buttons to select the snapshot. ■ To display the snapshot, press the button, then the button. ■ After reviewing the snapshot, press the button again to return to the list of saved snapshots. The various storage spaces in the Model 8435 are of a fixed size and are completely independent. There are four memory spaces available (alarms, snapshot, transients and recordings).

  • Page 75: Dataview ® Software

    5. DATAVIEW SOFTWARE ® 5.1 INSTALLING DATAVIEW ® DO NOT CONNECT THE INSTRUMENT TO THE PC BEFORE INSTALLING THE SOFTWARE AND DRIVERS. NOTE: When installing, the user must have Administrative access rights during the installation. The users access rights can be changed after the installation is complete.
  • Page 76 Figure 5-2 There are several different options to choose from. Some options require an internet connection. ● DataView, Version x.xx.xxxx - Installs DataView onto the PC. ® ● *Adobe Reader - Links to the Adobe website to download the most recent version of Adobe Reader to the ®...
  • Page 77 Figure 5-3 12. In the Ready to Install the Program window, click on Install. 13. If the instrument selected for installation requires the use of a USB port, a warning box will appear, similar to Figure 5-4. Click OK. Figure 5-4 NOTE: The installation of the drivers may take a few moments.

  • Page 78: Connecting The Model 8435 To Your Computer

    5.2 CONNECTING THE MODEL 8435 TO YOUR COMPUTER The Model 8435 is supplied with a USB cable required for connecting the instrument to the computer. To connect the instrument to your computer: 1. Connect the USB cable to the port on the front panel of the instrument. 2.
  • Page 79 Figure 5-6 The Control Panel user interface consists of multiple components for displaying, modifying, saving, and navigating data recorded on the Model 8435. ■ At the very top of the Control Panel is the title bar. The title bar displays the name of the application and the path to the open data file (if any).

  • Page 80: Configuring The Instrument

    5.4 CONFIGURING THE INSTRUMENT The PowerPad III Control Panel also enables you to configure every aspect of the Model 8435. Each field is identical to the programmable features available from the instrument’s front panel itself. Several of the functions are configured by typing the appropriate value in the field provided.

  • Page 81: Sensors And Ratios

    ■ Phase Harmonics Ratio: Options are Fundamental Value as reference (%f) and Total Value as reference (%r). ■ Long-Term Flicker: Options are Fixed Window and Sliding Window. 5.4.2 SENSORS AND RATIOS The Sensors and Ratios tab defines the voltage ratios and current ratios (when available) so final values can be adjusted, recorded, and displayed with correct magnitudes.

  • Page 82: Alarm Conditions

    5.4.4 ALARM CONDITIONS The Alarm Conditions tab allows you to set up 40 alarm configurations. Figure 5-10 ■ Prev Page & Next Page: Move between the 3 pages of alarms with 16 alarms per page. ■ Data to Capture: The alarm will be triggered based on the value of the selected parameter. Choices include: None: no alarm Hz: frequency VΦ-Φ...
  • Page 83 D (var): VΦ-Φ DC: DC phase-to phase VΦ-N THDr: harmonic distortion of voltage the phase-to-neutral voltage with the total RMS value without DC as reference DPF (cos Φ): displacement factor VΦ-Φ Hf: phase-to-phase VΦ-N unb (2): phase-to-neutral voltage harmonic factor voltage unbalance FHL: harmonic loss factor VΦ-Φ...

  • Page 84: Recordings

    5.4.5 RECORDINGS The Recordings tab shows the parameters for a recording session. Figure 5-11 Four different configurations are available. More configurations can be saved by pressing Save to File and recalled later by pressing Load From File. 1. Select the configuration to set up: 1, 2, 3, or 4. 2.

  • Page 85: Transients

    5.4.6 TRANSIENTS The Transients tab allows you to set up the criteria for capturing transients. Figure 5-12 1. In the Threshold of Voltage Difference section of the dialog box, select from the drop-down menu one of the following options: 4L Same thresholds for all, 3L+N Same except N has its own threshold, or L1+l2+l3+N Separate thresholds.

  • Page 86: Inrush

    5.4.7 INRUSH The Inrush tab shows the dialog box used to configure the parameters for an Inrush search. Figure 5-13 Inrush current is measured when the power is first turned on. Depending on the type of load, the Inrush current may be very high for some time when compared with steady state current later on.

  • Page 87: Real-Time Data

    5.5 REAL-TIME DATA When your setup is completed, you can display different views on the screen of real-time data and waveforms. 5.5.1 TREND Figure 5-14 This display shows a real-time trend of data from the Model 8435. The data is an average of waveforms downloaded to the PC whose scale adjusts constantly to fit all the data it has received.

  • Page 88: Harmonics

    5.5.3 HARMONICS Figure 5-16 This screen displays harmonic data up to the 50th harmonic for voltage or current for selected phase(s) of the available channels or neutral (N). The voltage harmonics can be selected for phase-to-phase voltage or phase-to-neutral voltage or neutral-to-ground voltage.

  • Page 89: Energy

    The data for all available phases are downloaded to a database or spreadsheet, not just what is shown on the screen. 5.5.5 ENERGY Figure 5-18 The Real-time Data Energy window resembles the Power window. The Energy window displays accumulated energy data, and can be started or stopped;...

  • Page 90: Recordings

    From the Downloads dialog box you can delete files listed in the Downloads dialog box by using the buttons Clear (to delete a selected session) or Clear List (to delete all sessions from the list). Note that this does not affect the files stored on the Model 8435;...

  • Page 91: Editing Downloaded Data

    5.6.6 EDITING DOWNLOADED DATA The Control Panel enables you to augment downloaded data with additional information about the recording session, such as operator and site. To do this, highlight the downloaded recording, alarm, transient, or Inrush result listed under Recorded Sessions. Then open the Edit menu and click Edit Address Book. The Session Properties dialog box appears. Figure 5-20 The Session Properties dialog box allows you to specify the Operator, Site, and Custom parameters that are to be saved with recorded data.

  • Page 92: Specifications

    6. SPECIFICATIONS 6.1 REFERENCE CONDITIONS Parameter Reference Conditions Ambient temperature 73°F ± 5°F (23°C ± 3°C) Humidity (relative humidity) [45%; 75%] Atmospheric pressure [860 hPa; 1060 hPa] Phase-to-neutral voltage [50Vrms; 1000Vrms] without DC (< 0.5%) Standard current circuit input [30mVrms; 1Vrms] without DC (< 0.5%) ⇔...

  • Page 93: Electrical Specifications

    6.2 ELECTRICAL SPECIFICATIONS Sampling Frequency (256 samples per cycle): 12.8kHz samples/sec per channel @ 50Hz 15.36kHz samples/sec per channel @ 60Hz Waveforms: Displays voltages and currents Screen Captures: 50 max Transients: Detection and recording of transients (up to 210) Inrush Current: Detection and recording of Inrush current (1 max) Memory: 2GB SD Card memory for trend data;...
  • Page 94 Measurement range without ratio Resolution (with unity ratio) Measurement Accuracy (with unity ratio) 0.1A ±(0.5% + 0.2A) A < 1000A SR clamp 1200A MR clamp ±(0.5% + 1A) A ≥ 1000A MN93 clamp 0.2A 240A 0.1A ±(0.5% + 0.2A) 0.01A ±(0.5% + 0.02A) A <...
  • Page 95 Measurement range without ratio Resolution (with unity ratio) Measurement Accuracy (with unity ratio) 0.1V V < 1000V Simple 1200V ±(0.8% + 1V) V ≥ 1000V RMS ½ Voltage 0.1V U < 1000V Compound 2400V ±(0.8% + 1V) U ≥ 1000V 0.1V V <...
  • Page 96 Measurement range without ratio Resolution (with unity ratio) Measurement Accuracy (with unity ratio) A < 1000A SR clamp 1697A ±(1% + 1A) MR clamp A ≥ 1000A MN93 clamp 0.2A 339.4A 0.1A ±(1% + 1A) 0.01A A < 100A SL261 clamp (10mV/A) 0.1A 169.7A ±(1% + 0.1A)
  • Page 97 ±(1.5%) cos F ≥ 0.5 Peak Factor (PF) 0.001 ±(1.5% + 10 ct) 0.2 ≤ cos F < 0.8 Excluding ±(1%) AmpFlex ® cos F ≥ 0.8 MiniFlex ® ±(1.5%) Active 0.2 ≤ cos F < 0.8 1mWh 9,999,999MWh 7 digits at most Energy AmpFlex ®...
  • Page 98 Measurement Range Measurement Resolution Accuracy 0.1% t < 999.9% Voltage Harmonic Ratio (t) 1600% ±(2.5 % + 5ct) t ≥ 1000% ±(2% + (n × 0.2%) + 5ct) 0.1% t < 999.9% n ≤ 25 Current Harmonic Ratio (t) 1600% (excluding AmpFlex &...
  • Page 99 Measurement range Resolution (with unity ratio) Measurement Accuracy (with unity ratio) 0.1V V < 1000V Simple 1200V ±(2.5 % + 1V) V ≥ 1000V Harmonic Voltage 0.1V U < 1000V (order n ≥ 2) Compound 2400V ±(2.5 % + 1V) U ≥...
  • Page 100 Max intrinsic error of the flicker severity measurement (Pst) Rectangular 120V lamp 230V lamp variations per minute 60Hz network 50Hz network (50% duty cycle) Pst ∈ [1;4] Pst ∈ [1;4] ± 5% ± 5% Pst ∈ [1;7] Pst ∈ [1;4] ±...

  • Page 101: Current Probe Accuracy (To Be Added To The Model 8435'S Accuracy)

    6.2.4 CURRENT PROBE ACCURACY (TO BE ADDED TO THE MODEL 8435’S ACCURACY) Sensor errors are offset by a typical correction inside the device. This typical correction, applied to the phase and amplitude, depends on the type of sensor connected (detected automatically) and the gain in the current acquisition channel used.

  • Page 102: Current Probes And Sensors

    6.2.5 CURRENT PROBES AND SENSORS When installing probes, face the arrow on the probe in the direction of the load. Note that only AmpFlex sensors are ® watertight; all other probes and sensors are non-watertight. Model SR193 for f ≤1kHz Nominal Range 1000A Measurement Range...
  • Page 103 AmpFlex Sensors ® Nominal Range 3000A Measurement Range 10A to 6500A Probe Output Signal* 140mV /3000A at 60Hz Length = 24" (610mm); Ø = 7.64" (190mm) Sensor Length = 36" (910mm); Ø = 11.46" (290mm) Safety EN 61010-2-032, Pollution Degree 2, 600V CAT IV, 1000V CAT III *Output is proportional to the amplitude and frequency of the measured current.

  • Page 104: Three-Phase 5A Adapter Box (3-Channel Use Only)

    6.2.6 THREE-PHASE 5A ADAPTER BOX (3-CHANNEL USE ONLY) Figure 6-1 This adapter is a three-phase adapter with three 5A inputs L1, L2, L3, and three AC voltage outputs. All circuits are independent and isolated between input and output. The outputs are equipped with connectors to mate with the Model 8435 current channel inputs.

  • Page 105: Power Supply

    Operating Temperature: 5° to 131°F (-15° to 55°C), 0 to 90% RH Storage Temperature: -40° to 185°F (-40° to 85°C), 0 to 90% RH Reference Conditions: 73°F (23°C) ±3K, 50 to 85% RH, 50/60Hz ±2Hz Current measurement according to IEC 44-1 Class 0.5 Range 5mA to 50mA 50mA to 1A...

  • Page 106: Environmental Specifications

    6.4 ENVIRONMENTAL SPECIFICATIONS Altitude: Operating: 0 to 2000 meters (6560 ft) Non-Operating: 0 to 10,000 meters (32800 ft) Temperature and % RH: Reference Range Operating Range Storage Range Temperature in °F Figure 6-2 WARNING: Above 104°F (40°C) the instrument can be used only from the battery or from the battery charger with the battery removed.

  • Page 107: Maintenance

    7. MAINTENANCE Use only factory specified replacement parts. AEMC will not be held responsible for any accident, incident, or malfunction ® following a repair done other than by its service center or by an approved repair center. Before first use, charge and discharge the instrument one or two cycles to ensure the proper level display of the battery indicator.

  • Page 108: Cleaning

    ■ Do not splash water directly on the clamp ■ Do not use alcohol, solvents or hydrocarbons 7.5 UPDATING SOFTWARE & FIRMWARE To provide our customers the best possible service in terms of performance and technical upgrades, AEMC offers free ®...

  • Page 109: Limited Warranty

    This warranty is void if the unit has been tampered with, abused or if the defect is related to service not performed by AEMC Instruments. ® Full warranty coverage and product registration is available on our website at: www.aemc.com/warranty.html. IMPORTANT WARRANTY NOTE: By registering online within 30 days from the date of purchase, your warranty will be extended to 3 years Please print the online Warranty Coverage Information for your records.

  • Page 110: Warranty Repairs

    CSA Form. Please write the CSA# on the outside of the shipping container. Return the instrument, postage or shipment pre-paid to: Ship To: Chauvin Arnoux , Inc. d.b.a. AEMC Instruments ®...

  • Page 111: Mathematical Formulas For Various Parameters

    APPENDIX A A.1 Mathematical Formulas for Various Parameters NOTE the following abbreviations used in this section: NSHC = number of samples per half cycle (between two consecutive zeros) NSC = number of samples per cycle NSS = number of samples in a second (multiple of NSC) V = voltage phase to neutral U = voltage phase to phase A.1.1 Network Frequency and Sampling...

  • Page 112: Minimum And Maximum Half-Cycle Rms Values (Excluding Neutral)

    Half-cycle RMS current of phase (i+1) with i X [0; 2]. To avoid missing any fault, these values are calculated for each half-cycle. A.1.2.2 MINIMUM AND MAXIMUM HALF-CYCLE RMS VALUES (EXCLUDING NEUTRAL) Min and max RMS phase-to-neutral voltages of phase (i+1) with i ∈ [0 ; 2]. Vmax [i] = max(Vhalf[i]), Vmin[i] = min(Vhalf[i]) Min and max RMS phase-to-phase voltages of phase (i+1) with i ∈...

  • Page 113: Peak Values (Neutral Except Upp And Upm - Over 250Ms)

    A.1.2.5 PEAK VALUES (NEUTRAL EXCEPT UPP AND UPM – OVER 250MS) Positive and negative phase-to-neutral peak voltages of phase (i+1) with i ∈ [0 ; 3] (i = 3 ⇔ neutral) Vpp[i]=max (V[i][n]), Vpm[i]=min (V[i][n]), n ∈ [0;N] Positive and negative phase-to-phase peak voltages of phase (i+1) with i ∈ [0 ; 2] Upp[i]=max(U[i][n]), Upm[i]=min(U[i][n]), n ∈...

  • Page 114: Reverse Unbalances (Three-Phase Connection - Over One Second)

    A.1.2.8 REVERSE UNBALANCES (THREE-PHASE CONNECTION – OVER ONE SECOND) These are calculated from the filtered RMS vector values (over one second) VFrms[i] and AFrms[i] for distribution systems with neutral and UFrms[i] and AFrms[i] for distribution systems without neutral (ideally the fundamental vectors of the signals).

  • Page 115: Fundamental Rms Values (Excluding Neutral - Over One Second)

    A.1.2.9 FUNDAMENTAL RMS VALUES (EXCLUDING NEUTRAL – OVER ONE SECOND) These are calculated from the filtered vector (instantaneous) values. A digital filter made up of six low-pass order 2 infinite pulse response Butterworth filters and one high-pass order 2 infinite pulse response Butterworth filter is used to extract the fundamental components.

  • Page 116: Harmonic Distortions

       1024 π   ∑  ϕ ⋅      with   1024 π   ∑ ϕ ⋅        1024  ∑  1024  is the amplitude of the component of order with a frequency is the sampled signal at the fundamental frequency is the DC component...

  • Page 117: K Factor (Excluding Neutral - Over 4 Consecutive Cycles Every Second)

    A.1.3.4 K FACTOR (EXCLUDING NEUTRAL – OVER 4 CONSECUTIVE CYCLES EVERY SECOND) K factor for phase (i+1) with i ∈ [0; 2], e ∈ [0.05; 0.1] and q ∈ [1.5; 1.7]. A.1.3.5 SEQUENCE HARMONICS (OVER 3 × (4 CONSECUTIVE CYCLES) EVERY SECOND) Negative-sequence harmonics: Three phase systems with neutral: Three phase systems without neutral:...

  • Page 118: Powers

    Positive -sequence harmonics: A.1.4 Powers Powers without neutral – over one second. NSS = number of samples in a second. A.1.4.1 DISTRIBUTION SYSTEM WITH NEUTRAL Active power of phase (i+1) with i ∈ [0 ; 2]: − ∑ [ ][ ] [ ][ ] ⋅...

  • Page 119: Three-Phase System Without Neutral

    Total distortion power: Total non-active power : A.1.4.2 THREE-PHASE SYSTEM WITHOUT NEUTRAL Three-phase distribution systems without neutral are considered as a whole (no phase-by-phase power calculation). The device therefore displays only the total quantities. The two-wattmeter method (Aron method or two-element method) is applied for the calculation of the total active power, of the total reactive power and of the total DC power.
  • Page 120 Reactive power, wattmeter 1: Reactive power, wattmeter 2: DC power, Wattmeter 1: DC power, Wattmeter 2: Reference in L3 Active power, wattmeter 1: Active power, wattmeter 2: Reactive power, wattmeter 1: Reactive power, wattmeter 2: DC power, Wattmeter 1: DC power, Wattmeter 2: Calculation of the total quantities Total active power: Total DC power:...

  • Page 121: Two-Phase Systems Without Neutral

    Note: This is the total apparent RMS power as defined in IEEE 1459-2010 for distribution systems without neutral. Total reactive power: Total distortion power: Total non-active power: A.1.4.3 TWO-PHASE SYSTEMS WITHOUT NEUTRAL Two-phase distribution systems without neutral (2-wire two-phase) are treated as single-phase distribution systems having their voltage reference on L2 rather than N (neutral).

  • Page 122: Power Ratios (Excluding Neutral - Over One Second)

    A.1.5 Power ratios (excluding neutral – over one second) A.1.5.1 DISTRIBUTION SYSTEM WITH NEUTRAL Power factor of phase (i+1) with i ∈ [0 ; 2]: Fundamental power factor of phase (i+1) or cosine of the angle of the phase-to-neutral voltage fundamental of phase (i+1) with respect to the current fundamental of phase (i+1) with i ∈...

  • Page 123: Three-Phase System Without Neutral

    A.1.5.2 THREE-PHASE SYSTEM WITHOUT NEUTRAL Total power factor: Total fundamental power factor: with: If reference on L1 If reference on L2 If reference on L3 Total tangent: A.1.5.3 TWO-PHASE SYSTEM WITHOUT NEUTRAL Two-phase distribution systems without neutral (2-Wire two-phase) are treated as single-phase distribution systems having the voltage reference on L2 rather than N (neutral).

  • Page 124: Energy

    A.1.6 Energy Energy excluding neutral – over T with refresh every second. T is the power integration time in energy calculations; the beginning and end of this period are user-controlled. A.1.6.1 DISTRIBUTION SYSTEM WITH NEUTRAL Consumed DC energy of phase (i+1) with i ∈ [0 ; 2]: Total consumed DC energy: Case 1: Energy consumed other than DC (W[i][n] ≥...
  • Page 125 Total consumed distortion energy: VARDh[0][3] = VADh[0][0] + VADh[0][1] + VADh[0][2] Total consumed non-active energy: VARh[0][3] = VARh[0][0] + VARh[0][1] + VARh[0][2] Case 2: Generated DC energy of phase (i+1) with i ∈ [0; 2] with Wdc[i][n] < 0 Case 3: Total generated DC energy Wdch[1][3] = Wdch[1][0] + Wdch[1][1] + Wdch[1][2] Case 4: Energy generated other than DC (W[i][n] <...

  • Page 126: Distribution System Without Neutral

    Total generated inductive reactive energy: VARhL[1][3] = VARhL[1][0] + VARhL[1][1] + VARhL[1][2] Total generated capacitive reactive energy: VARhC[1][3] = VARhC[1][0] + VARhC[1][1] + VARhC[1][2] Total generated distortion energy: VADh[1][3] = VADh[1][0] + VADh[1][1] + VADh[1][2] Total generated non-active energy: VADh[1][3] = VADh[1][0] + VADh[1][1] + VADh[1][2] A.1.6.2 DISTRIBUTION SYSTEM WITHOUT NEUTRAL This section discusses only of total energy, with: ■...
  • Page 127 Total consumed distortion energy: Total consumed non-active energy: Case 2: Total generated DC energy with Wdc[i][n] < 0 Case 3: Total energy generated other than DC (W[i][n] < 0) Total generated active energy: Total generated apparent energy: Total generated inductive reactive energy: with VARF[i][n] <...

  • Page 128: Hysteresis

    A.1.7 Hysteresis Hysteresis is a filtering principle, often used after the threshold detection has occurred. A correct setting of the hysteresis value will avoid repeated triggering when the measurement is varying close to the threshold. The event detection is activated when the measurement goes over the threshold; but it can only be deactivated if the measurement goes under the threshold minus the value of the hysteresis.

  • Page 129: Minimum Scale Values For Waveforms And Minimum Rms Values

    A.1.8 Minimum scale values for waveforms and minimum RMS values Minimum scale value Type Min RMS values [waveform mode] Phase-to-neutral and phase-to-phase voltages AmpFlex & MiniFlex ® ® SR193 MR193 MN93 0.2A MN193 (100A) 0.8A 0.1A SL261 (10mV/A) 0.8A 0.1A SL261 (100mV/A) 0.08A 0.01A...

  • Page 130: Capture Conditions In Inrush Current Mode

    The following is a graphical representation of the transient capture trigger mechanism: Figure A-4 Item Function Reference period Top of envelope Cycle monitored Bottom of envelope Triggering event A.1.11 Capture Conditions in Inrush Current Mode Captures depend on the trigger event and a stop event. If the capture ends with a stop event or if the recording memory of the Model 8435 is full, the capture stops automatically.

  • Page 131: Glossary Of Terms

    A.2 Glossary of Terms Ampere: unit of electrical current intensity (A symbol). Bandwidth: frequency range on which an instrument supplies a precise measurement. Blackout: fall of voltage, at some point in the power network, to below a specified threshold. Channel and phase: a measurement channel corresponding to a difference in potential between two conductors. A phase is a single conductor.

  • Page 132: Symbols And Abbreviations

    Voltage dip: temporary reduction in the voltage amplitude at a point in the electrical power network below a given threshold. Watt: unit of measurement for power (W symbol). A.3 Symbols and Abbreviations Meanings of the symbols and abbreviations used: Symbol Designation AC and DC components AC component only...

  • Page 133: Find Quality Products Online At

    K factor (also called Factor K) Harmonic loss factor Frequency of network studied. Channel (Line) Maximum value Minimum value Millisecond PEAK or PK Maximum (+) or minimum (-) peak instantaneous value of the signal Power factor Long-term flicker Short-term flicker True RMS value (current or voltage) Relative date of time cursor tan F...

  • Page 134: Find Quality Products Online At

    Vrms True RMS phase-to-neutral voltage Vthd Total harmonic distortion of phase-to-neutral voltag Vthdf Total harmonic distortion of phase-to-neutral voltage in %f Vthdr Total harmonic distortion of phase-to-neutral voltage in %r Vunb Voltage unbalance Active power DC power Wdch DC energy Active energy (also watt-hour) Prefixes of International System (SI) units Prefix...

  • Page 135: Find Quality Products Online At

    GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 136: Find Quality Products Online At

    11/15 99-MAN 100389 v4 Chauvin Arnoux , Inc. d.b.a. AEMC Instruments ® ® GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...

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