AEMC instruments PowerPad 3945-B User Manual

3-phase power quality

Hide thumbs

page of 88

/ 88
Bookmarks

Quick Links

Download this manual

3945-B



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

www.valuetronics.com

Need help?

Do you have a question about the PowerPad 3945-B and is the answer not in the manual?

Questions and answers

Summary of Contents for AEMC instruments PowerPad 3945-B

Page 1 3945-B  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 www.valuetronics.com...
Page 2 www.valuetronics.com...
Page 3 Statement of Compliance ® ® Chauvin Arnoux , Inc. d.b.a. AEMC Instruments certiﬁes that this instrument has been calibrated using standards and instruments traceable to international standards. We guarantee that at the time of shipping your instrument has met its published speciﬁcations. An NIST traceable certiﬁcate may be requested at the time of purchase, or obtained by returning the instrument to our repair and calibration facility, for a...
Page 4 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 •...
Page 5 Table of Contents 1. INTRODUCTION ................. 7 International Electrical Symbols ............7 Definition of Measurement Categories ..........8 Receiving Your Shipment ..............8 Ordering Information ................8 1.4.1 Accessories and Replacement Parts ........9 1.4.2 Third Party Accessories ............10 2. PRODUCT FEATURES ............... 11 Description ..................11 Control Functions ................12 Display ....................14 Battery Charge Status ................16...
Page 6 4. OPERATION ..................30 Instrument Configuration (Set-up mode) ..........30 4.1.1 Date / Time ................31 4.1.2 Contrast / Brightness ............31 4.1.3 Colors ..................32 4.1.4 Calculation Parameters............32 4.1.5 Electrical Hookup (electrical network) ........33 4.1.6 Current Sensors ..............34 4.1.7 Baud Rate ................35 4.1.8 Recording................36 4.1.9 Alarm ..................37...
Page 7 Recording Mode .................57 5.6.1 Saving the Selected Parameters ..........57 5.6.2 Selecting or Deleting a Record ..........59 5.6.3 Selecting a Graphic Display for Recorded Measurements ..60 Saving a Display ................63 Opening a Previously Saved Snapshot ..........64 Printing ....................65 5.10 Help ....................65 ®...
Page 8 APPENDIX B: GLOSSARY ..............80 Repair and Calibration ............... 83 Technical and Sales Assistance ............83 Limited Warranty ................84 Warranty Repairs ................84 Power Quality Analyzer Model 3945-B www.valuetronics.com...
Page 9 CHAPTER 1 INTRODUCTION Warning • Never use on circuits with a voltage higher than 600V and an overvoltage category higher than CAT III or IV (probe dependant). • Use in indoor environments only. • Only use accessories that are compliant with the safety standards (IEC 664-1 Ed.
Page 10 1.2 Deﬁnition of Measurement Categories CAT IV: For measurements performed at the primary electrical supply (<1000V) such as on primary overcurrent protection devices, ripple control units, or meters. CAT III: For measurements performed in the building installation at the distribution level such as on hardwired equipment in fixed installation and circuit breakers.
Page 11 PowerPad ® Model 3945-B w/24" AmpFlex ® 193-24 ......Cat. #2130.77 Includes meter, set of three 24" AmpFlex ® 193-24 (6500A) sensors, extra large tool bag, soft carry- ing pouch, four 10 ft color-coded voltage leads and alligator clips, RS-232 DB9F optically coupled serial cable, RS-232 to USB adapter, US 115V power cord, rechargeable NiMH battery pack, and a USB stick with DataView ®...
Page 12 Set of (3) Color-coded 36", 30 ft Leads (6500A) AmpFlex ® Sensors Model 193-36-30 ..........Cat. #2140.27 MR193 Probe (black connector) (1000A ) .....Cat. #2140.28 /1400A Set of (3) Color-coded MN193, 30 ft Leads (5A/100A).....Cat. #2140.29 Set of (3) Color-coded MR193, 30 ft Leads (1000A ) ..Cat.
Page 13 CHAPTER 2 PRODUCT FEATURES 2.1 Description ® The PowerPad Model 3945-B is a three-phase power quality analyzer that is easy-to-use, compact and shock-resistant. It is intended for technicians and engi- neers to measure and carry out diagnostic work and power quality work on one, two or three phase low voltage networks.
Page 14 2.2 Control Functions MODEL 3945-B 49.99Hz 07/25/02 10:26 100% 0.3 v 0.3 v 0.3 v 300V - 300 <t= 5.0ms V1= +0 > PowerPad ® Figure 2-1 Over molded protective case.  Color LCD display with graphic representation of system parameters and ...
Page 15  ON / OFF button. Three (3) current inputs on the top of the instrument to enable the use of  current sensors (MN, SR, AmpFlex , and MR probes). ® Four (4) voltage inputs.  RS-232 bidirectional optically isolated output for transferring data to a PC (bi- ...
Page 16 Alarm Events: • provides a list of the alarms recorded according to the thresholds programmed during configuration • logging of interruption with half-cycle resolution • determination of energy consumption exceedences • stores value, duration, date, time and set point for up to 4096 events 2.3 Display 49.99Hz...
Page 17 Measurement selection:  True RMS Measurement Total Harmonic Distortion Crest Factor Maximum and Minimum values max/min Simultaneous display of the various measurements in alphanumeric form Phasor diagram The calculation of the DPF, Tan, KF, Φ, UNB, Min, Max, VAR, Harmonics, PST, and DF parameters and the frequency measurement can only be performed if voltage with a frequency of 41 to 70 Hz is applied to the Ch1 voltage input.
Page 18 2.4 Battery Charge Status NOTE: Line cord is plugged in Battery Charging • Battery capacity level relative to full charge • % of total capacity already charged (between 0 and 99%) • Battery sign and % are blinking NOTE: Line cord may or may not 100% be plugged in Battery Full...
Page 19 CHAPTER 3 SPECIFICATIONS 3.1 Reference Conditions Parameter Reference Conditions 73°F ± 5°F (23°C ± 3°C) Ambient temperature Humidity 25.4" Hg to 31.3" Hg (860 to 1060 hPa) Atmospheric pressure Phase voltage 230Vrms and 110Vrms ±2% without DC Clamp current circuit input voltage 0.03V to 1Vrms without DC (<0.5%) current circuit input voltage 11.8mV to 118mVrms without DC (<0.5%)
Page 20 3.2.2 Current Inputs Operating Range: 0 to 1V Input Impedance: 100kΩ for current probe circuit and 12.4kΩ for AmpFlex ® circuit Overload: 1.7V 3.2.3 Accuracy Speciﬁcations (excluding current probes) Function Range Display Resolution Accuracy Frequency 40 to 69Hz 0.01Hz ±0.01Hz Single phase RMS voltages 15V to 480V 0.1V...
Page 21 Function Range Display Resolution Accuracy Apparent Energy (Vah) 0VAh to 9999MVAh 4 digits ±1% ± 1ct Unbalance (Vunb, Aunb) 0% to 100% 0.1% ±1% ± 1ct three phase supply Phase angle (V/I; I/I; V/V) -179° to +180° 1° ±2° Harmonics ratios F = 40 to 69Hz 0% to 999% ±1% + 5cts...
Page 22 3.3 Mechanical Speciﬁcations Dimensions: 9.5 x 7.0 x 2.0" (240 x 180 x 55mm) Weight: 4.6 lb (2.1kg) Shock and Vibration: per EN 61010-1 Tightness: IP 50 per EN 60529 (electrical IP2X for the terminals) 3.4 Environmental Speciﬁcations Altitude: Operating: 0 to 2000 meters (6560 ft) Non-Operating: 0 to 10,000 meters (32800 ft) Temperature and % RH: Reference Range...
Page 23 3.6 AC Current Probe Model SR193 (3945-B accuracy included) When installing probes, face the arrow on the probe in the direction of the load. Nominal Range: 1000A for f ≤1kHz Measurement Range: 3A to 1200A max (I >1000A not continuously) Currents <0.5A will be displayed as zero with this probe.
Page 24 3.7 AC Current Probe MN93 Probe (3945-B accuracy included) When installing probes, face the arrow on the probe in the direction of the load. Nominal Range: 200A for f ≤ 1kHz Measurement Range: 2A to 240A max (I > 200A not permanent) Currents <0.5A will be displayed as zero with this probe.
Page 25 3.8 AC Current Probe MN193 Probe (3945-B accuracy included) When installing probes, face the arrow on the probe in the direction of the load. The 5A range of the MN193 is designed to work with secondary current transform- ers. Best accuracy is available when entering the transformer ratio (e.g. 1000/5A). When used to measure 5A direct, the resolution will be limited to 0.1A max.
Page 26 Factors affecting accuracy (% of the output signal) Conditions Range Error ≤200 ppm/K or 14° to 131°F (-10° to 55°C) Ambient temperature 0.2% per 10K Relative humidity 10° to 35°C 85% < 0.2% 40Hz to 1kHz: < 0.7% Frequency response 40Hz to 3kHz 1 to 3kHz: <2% <0.5% to 50/60Hz...
Page 27 Accuracy Primary current (A 10 to 100A 100 to 6500A Accuracy (% of the output signal) ≤3% ± 1ct ≤2% Phase shift (°) ≤0.5° ≤0.5° Factors affecting accuracy (% of the output signal) Conditions Range Error -4 to 140°F (-20 to 60°C) 0.2% per 10°C Temperature Relative humidity...
Page 28 Accuracy Primary current (A 20 to 100A 100 to 1000A Accuracy (% of the output signal) ≤3% ≤2% Phase shift (°) -90° ±0.5° Factors affecting accuracy (% of the output signal) Conditions Range Error -4 to 140°F (-20 to 60°C) 0.2% per 10°C Temperature Relative humidity...
Page 29 Accuracy 800 to 1000A Primary current 10 to 100A 100 to 800A 800 to 1300A PEAK ≤1.5% + 1ct ≤3% + 1ct ≤5% + 1ct Accuracy 10 to 100Α Primary current 100 to 1000A – ≤2.0° ≤15° Phase angle – Factors affecting accuracy (% of the output signal) Conditions...
Page 30 3.12 Three-phase 5A Adapter Box 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 PowerPad ®...
Page 31 3.12.1 Connecting to Secondary Current Transformer (CT) WARNING: Use caution when connecting to a secondary current trans- former. Short the two leads of each secondary current measurement transformer. Never open a secondary circuit of a CT if its primary circuit is connected to a supply voltage.
Page 32 CHAPTER 4 OPERATION NOTE: Charge the instrument fully before use. The instrument is turned ON by pressing the green button. The startup screen appears and indicates the instrument’s software version and serial number. If there is no AC power supply, the instrument operates on batteries. The instru- ment’s batteries are charged when it is connected to a 120/240;...
Page 33 WARNING: When “CLEAR MEMORY” is selected, all conﬁgurations are deleted. • Choose the language by pressing the function button below the desired language. Your choice will remain highlighted in yellow. • Select the configuration settings you wish to modify, with the buttons.
Page 34 4.1.3 Colors • Highlight COLORS with the buttons, then press the button. The following screen will appear: 07/25/02 10:26 100% Phase voltage < > Phase current < > Phase voltage < > Phase current < > Phase voltage < > Phase current <...
Page 35 4.1.5 Electrical Hookup (electrical network) • Highlight ELECTRICAL HOOKUP with the buttons, then press the button. The following screen will appear: 07/25/02 10:26 100% Single-Phase Two-Phase 3 Phase 3-Wire 3 Phase 4-Wire Figure 4-3 • Choose the hookup type with the buttons.
Page 36 Synchronization of the Display in “Waveform” mode: Display selection Reference channel (vertical right menu) for synchronization 4A / 3A 4.1.6 Current Sensors • Highlight CURRENT SENSORS with the buttons, then press the button. The following screen will appear: 07/25/02 10:26 100% 200A MN clamp...
Page 37 buttons to select the desired measurement range of 200, 100 or 5 Amps. If the 5 Amp range is selected, a choice for programming the ratio is offered. button to highlight the secondary value. To change the ratio, press the buttons will toggle this value to either 1 or 5.
Page 38 4.1.8 Recording • Highlight RECORDING with the buttons, then press the button. The following screen will appear: SET-UP If these options are not selected, all the harmonics (odd and even) will be recorded. Figure 4-5 • Four recording set-ups are available. •...
Page 39 button again to move to the right to modify the last value Press the needed to complete the definition. Here you will choose whether to include all harmonics or only the odd harmonics. Use the buttons to make this selection. The diamond preceding the Odd Only choice will appear filled in for selected and unfilled for not selected.
Page 40 A programmed alarm must be set to “ON” to function properly (general activation or deactivation of alarms is generated in the alarm mode). Modifying one or several characteristics of an alarm set to “ON”, auto- matically switches it to “OFF”. ...
Page 41 4.1.10 Clear Memory When CLEAR MEMORY is selected, the following question is displayed: Are you sure you want to delete all the data? • Choose the answer with the buttons. button to apply your choice. The Configuration menu will once •...
Page 42 CHAPTER 5 DISPLAY MODES The screen presentations in this section depict three-phase setups for the purpose of explaining the various choices. Your actual screens will appear differently based upon your particular set up. 5.1 Waveform Mode Press the waveform display mode button - 5.1.1 RMS Voltage Measurement on a Three-phase System 49.99Hz...
Page 43  The measurement type is selected using one of the six variable function but- tons. All of these measurements are valid in 3U, 3V, 3A, L1, L2 and L3.  The waveforms are selected by pressing the buttons: 3U displays the three phase-phase voltages of a three-phase system 3V displays the three voltages of a three-phase system 3A displays the three phase currents of a three phase-3 wire system The neutral current is not a direct measurement, but the resulting total of the...
Page 44 5.1.3 RMS Current Measurement on the 3 Phases and Neutral Current on a Three Phase-4 Wire System 60.00Hz 07/25/02 10:26 100% 19.1 18.5 17.1 - 27 <t= 5.0ms l1= +26 12= -13 13= -13 IN= +1 > Figure 5-3 5.1.4 Total Harmonic Distortion Measurement on One Phase 60.00Hz 07/25/02...
Page 45 5.1.5 Minimum and Maximum Current Value Measurements 59.99Hz 07/25/02 10:26 100% 21.7 18.8 17.6 18.5 17.1 15.0 +11.4 +25.8 +24.0 PEAK+ –11.0 –25.8 –24.8 PEAK - Figure 5-5  Crest Factor - refreshed every 250ms (but calculated every second).  to obtain the MIN, AVG, MAX, or PEAK values for current Select 3V or 4A with or voltage.
Page 46 5.1.6 Simultaneous Display of the Different Current Measurements 59.99Hz 07/25/02 10:26 100% 10.4 18.4 16.9 11.6 +0.0 +0.0 –0.3 –0.3 27.7 1.61 1.40 1.45 1.92 1.03 1.00 25.9 Figure 5-6 As seen on the bar on the right, K factor is only available for currents 4A, 3A or 2A, depending on hook up of leads.
Page 47 5.1.7 Phasor Diagram Display (Fresnel Diagram) 59.99Hz 07/25/02 10:26 100% 202.8 v 198.7 v 203.2 v +122 ° +118 ° +120 ° UNBALANCE Figure 5-7  Absolute value of voltage or current, depending on display selection.  Φ 12 corresponds to phase angle between channel 1 and channel 2 Φ...
Page 48 5.2 Harmonics Mode Press the harmonic display mode button - Use the function buttons to select the type of harmonic analysis: V - Single phase voltage analysis A - Current analysis VA - Power and direction flow analysis U - Phase-to-phase voltage analysis buttons allow the user to zoom in or out, in increments of 2%, 5%, 10%, 20%, 50% and 100%.
Page 49  Cursor enables selection up to 50 harmonic, with the buttons. As soon range appears (0 represents as the 25 harmonic is reached, the 25 to 50 the DC component).  Selection of expert mode -.+ is available for 3-phase hookups by pressing the buttons (see §5.2.4 for description).
Page 50 5.2.3 Power and Direction Flow Analysis 59.98Hz 07/25/02 10:26 100% VAh03 - 122 ° min - 22 % max - 22 % -100 9 11 13 15 17 19 21 23 25 Figure 5-10 Harmonics on this screen are shown with either a positive or negative orientation. Since the bar selected in this example is negative, it indicates that it is a harmonic from load to source.
Page 51 5.2.4 Harmonic Analysis in Expert Mode button to select “-.+” and then either the “V” or “A” variable Press on the function button “V” or “A”. Example of a typical display: 59.98Hz 07/25/02 10:26 100% 15.5 Figure 5-11 • First column: The harmonics inducing a negative sequence are displayed. •...
Page 52 5.3 Power / Energy Mode . This will enable: Press the power display mode button - • Measurement of the real power (generated and consumed) • Measurement of reactive power (capacitive or inductive) • Measurement of apparent power W... - Choice of power parameters PF...
Page 53 5.3.2 Button This function key is used to display generated or consumed power, or real, reactive and apparent energy. This button toggles the display between generated energy (from load to supply) and consumed energy (from supply to load) each time it is pressed. When the is highlighted (yellow background) the display shows generated energy.
Page 54 5.4 Transient Mode Press the transient display mode button - Transients are displayed in the form of waveforms. All channels (up to 6, based upon configuration) are stored in memory for each transient. Up to 50 transients can be captured, which include the pre-tripped waveform, the tripped waveform and two post trip waveforms for each active input.
Page 55 The table below lists the capture threshold levels, based on the probe in use (for the current channels) and voltage at the different percent selections. Thresholds 100% MN93 200A 100A MN193 (100A) 100A [ (primary x 5) ÷ (secondary) ] x (percent x 100) MN193 (5A) SR193 1000A...
Page 56 5.4.1 Opening Previously Stored Transients The screen below can be accessed with the retrieve button. It displays a list transients previously stored in the memory. 07/25/02 10:56 100% SELECTION OF TRANSIENT TEST 05 05/07/02 14:31:41 TEST 04 05/07/02 14:31:41 TEST 03 05/07/02 14:31:21 TEST 02 05/07/02 14:31:04...
Page 57 The display below shows the transient selected in Fig. 5-16 on the previous page. 07/25/02 11:22 100% 07/25/02 11:24:21 -30A <t= +0.0ms I1= -1 12= +0 I3= -20 > Figure 5-17 The screen displays 4 cycles of 256 points/cycle, with 1 cycle before the trigger and 3 cycles after.
Page 58 5.5 Alarm Mode Press the alarm display mode button - Figure 5-18 presents the various alarms stored. NOTE: The threshold values must first have been programmed in the mode. Also, the alarm event, or alarm capture, must end before an alarm will be dis- played.
Page 59 5.6 Recording Mode After a recording is set, the instrument will go into sleep mode (no display) to save the batteries. The recording will start as programmed. Press any button other than the ON/OFF button to turn ON the display again. Turning off the PowerPad ®...
Page 60 Select a recording storage rate using the buttons. NOTE: The possible storage rates are 1, 5 or 20 sec; 1, 2, 5, 10 or 15 min. Enter the record name with the buttons, which scroll through the alphabet and numbers. Up to 7 characters may be entered. Save the changes with the button.
Page 61 5.6.2 Selecting or Deleting a Record 07/25/02 10:56 100% SELECTION OF RECORDING TEST 07/25/02 17:58 > In progress PUMP 07/18/02 17:58 > 07/18/02 11:45 MOTORA 07/12/02 14:41 > 07/12/02 16:40 Figure 5-20 If the “@” symbol appears as the ﬁrst letter of the recording name (e.g. @EST), the data may be corrupted and should be checked carefully.
Page 62 5.6.3 Selecting a Graphic Display for Recorded Measurements Recorded data can be displayed in graphic form. • Select the recording to be displayed using the buttons. Then, open the button. A screen similar to figure 5-21 will appear. recording by pressing the 07/25/02 10:56 100% TEST...
Page 63  Display of the average voltage for each of the 3 voltages. Moving the cursor buttons updates the values to reflect the new cursor position. with the  Selection of the 3 phases or each phase separately with the buttons. ...
Page 64 Graphic Display of Average Power After returning to the Measurement Selection Screen (see Fig. 5-21) use the “../..” button to view more recorded parameters, if necessary. Pressing the “W” button, will bring up a screen similar to Fig. 5-24 below. 07/25/02 10:38 100% 07/25/02 10:13:21...
Page 65 The energy over a selected period can be calculated from the average power records: • Move the cursor to the start time. • Press the function button. • Move the cursor with buttons to the desired end time. • The energy value is displayed, with end date and end time. It is possible to make an energy measurement over several recording ranges in the 4 quadrants.
Page 66 5.8 Opening a Previously Saved Snapshot A short press (about 1s) on the button gives access to the menu of snapshots that have been saved. The small icon to the left of each snapshot (date and time) tells you what type of data was stored.
Page 67 5.9 Printing The print button allows a screen to be printed directly to a dedicated printer con- nected to the serial port. 59.99Hz 07/25/02 10:26 100% 202.5 v 202.0 v 202.7 v 300V - 300 <t= 5.0ms V1= +276 V2= -140 V3= -145 >...
Page 68 CHAPTER 6 ® DATAVIEW SOFTWARE ® 6.1 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 ®...
Page 69 (a check mark next to the Control Panel indicates it is selected). Control Panels take up disk space on the computer; so unless you have other types of AEMC instruments, we recommend that you select PowerPad and deselect the rest. You should also check the option DataView Core, which is a require- ment if you plan to create DataView reports.
Page 70 To connect the Model 3945-B to your computer: 1. Connect the optical connector end of the cable to the serial port on the ® side panel of the Model 3945-B PowerPad 2. Connect the 9-pin connector end of the cable, to an available serial port on your computer.
Page 71 This Control Panel displays: • Recorded Data from the instrument • Real-time Data • Connection status • The communications port and speed of the connection • The model number, serial number, and firmware revision • The battery charge level, whether the battery is charging or discharging, and the time on the clock •...
Page 72 CHAPTER 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. ® After receiving your PowerPad shipment, charge and discharge the instru- ment one or two cycles to ensure the proper level display of the battery indicator.
Page 73 7.2 Cleaning Disconnect the instrument from any source of electricity. • Use a soft cloth, lightly dampened with soapy water • Wipe with a damp cloth and then dry with a dry cloth • Do not splash water directly on the clamp •...
Page 74 APPENDIX A 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 Half-period Voltage and Current RMS Values...
Page 75 MIN / MAX Values for Voltage and Current Vmax[i]= max (Vdem[i]), Vmin[i] = min (Vdem[i]) Umax[i]= max (Udem[i]), Umin[i] = min (Udem[i]) Amax[i]= max (Adem[i]), Amin[i] = min (Adem[i]) (Avg calculation on 1s) Peak Values for Voltage and Current (Updated on each waveform refresh) ∈...
Page 76 1 sec RMS Values for Voltage and Current − Vrms [][ ] ∑ ⋅ Single rms voltage i + 1 phase − Urms [][ ] ∑ ⋅ Compound rms voltage i + 1 phase − Arms [][ ] ∑ ⋅ Rms current i + 1 phase Voltage and Current Unbalance j 2π...
Page 77 Calculation of Harmonic Bins Harmonic bins are calculated by FFT with 16 bit resolution (1024 samples on 4 cycles) without windowing (IEC 1000-4-7). From real and imaginary compo- nents, each bin ratio is calculated on each phase Vharm[3][51], Uharm[3][51] and Aharm[3][51] in proportion to the fundamental value and the phase angles Vph[3][51], Uph[3][51] and Aph[3][51] between each bin and the fundamental.
Page 78 K Factor n=50 [][ ] ∑ Aharm K factor for the i + 1 phase n=50 [][ ] ∑ Aharm Different Power Levels 1 Sec NSS-1 [][ ] [][ ] ∑ Active power i + 1 phase VA[i] = Vrms[i] Arms[i] Apparent power i + 1 phase NSS-1 [][ ] ∑...
Page 79 Ratios W[i] PF[i] = i + 1 phase power factor VA[i] DPF[i] = cos(φ[i]) i + 1 phase displacement factor Tan[i] = tan(φ[i]) i + 1 phase tangent NSS-1 [][ ] [][ ] ∑ Cosine angle between voltage cos(φ[i]) = NSS-1 NSS-1 fundamental and i + 1 phase current...
Page 80 Total reactive capacitive energy consumed: VARhC[0][3] = VARhC[0][0] + VARhC[0][1] + VARhC[0][2] Total reactive inductive energy consumed: VARhL[0][3] = VARhL[0][0] + VARhL[0][1] + VARhL[0][2] W[i] ∑ Wh [ 1 ][ i ] = Active energy generated phase i + 1 3600 Tint VA[i]...
Page 81 Hysteresis Hysteresis is a filtering principle, often used after the threshold detection has occurred. A correct setting of hysteresis value will avoid repeated triggering when the measure is varying close to the threshold. The event detection is activated when the measure is going over the threshold but it can only be deactivated if the measure goes under the threshold minus the value of the hysteresis.
Page 82 APPENDIX B GLOSSARY OF TERMS Definition Symbol Frequency Vrms Volts rms Arms Amps rms Watts (Real Power) Power Factor Volts (phase-to-phase rms) Urms Vthd Volts total harmonic distortion Athd Amps total harmonic distortion VARS (reactive power) VARS Displacement power factor Volts total harmonic distortion (phase-to-phase) Uthd Volts crest factor...
Page 83 Σ/3 Average value of three-phase capture Three phases of voltage (phase-to-phase) Three phases of voltage (phase-to-neutral) Three phases of current Three phases of current including derived neutral current Phase one of voltage (phase-to-neutral) plus current Phase two of voltage (phase-to-neutral) plus current Phase three of voltage (phase-to-neutral) plus current Up/Down buttons Enter button...
Page 84 Battery charging or discharging Battery full 100% Battery empty discharging New battery discharging Power On/Off Validate the setting W... Power parameters PF... Power factor Starts energy accumulation Stops current activity Resets counter to zero Displays each type of energy (real, reactive, apparent) Starts capture or recording search Displays a captured transient Deletes a captured transient...
Page 85 Repair and Calibration To ensure that your instrument meets factory specifications, we recommend that it be scheduled back to our factory Service Center at one-year intervals for recalibration, or as required by other standards or internal procedures. For instrument repair and calibration: You must contact our Service Center for a Customer Service Authorization Number (CSA#).
Page 86 Limited Warranty The PowerPad ® Model 3945-B is warranted to the owner for a period of two years from the date of original purchase against defects in manufacture. This limited warranty is given by AEMC ® Instruments, not by the distributor from whom it was purchased.
Page 87 NOTES: www.valuetronics.com...
Page 88 11/19 99-MAN 100261 v39 Chauvin Arnoux ® , Inc. d.b.a. AEMC ® Instruments 15 Faraday Drive • Dover, NH 03820 USA • Phone: (603) 749-6434 • Fax: (603) 742-2346 www.aemc.com www.valuetronics.com...

This manual is also suitable for:

Powerpad 3945-b w/mn93 Powerpad 3945-b w/sr193 Powerpad 3945-b w/24 ampflex 193-24 Powerpad 3945-b w/36 ampflex 193-36 Powerpad 3945-b w/mr193 Powerpad 3945-b w/mn193 ... Show all