Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for HT Italia PQA819
Summary of Contents for HT Italia PQA819
- Page 1 Copyright HT ITALIA 2014 Version EN 2.01 - 26/05/2014...
-
Page 2: Table Of Contents
PQA819 - PQA820 Table of contents PRECAUTIONS AND SAFETY MEASURES ............3 1.1. Preliminary instructions ....................3 1.2. During use ........................4 1.3. After use ........................... 4 1.4. Definition of measurement (overvoltage) category ............4 ... - Page 3 PQA819 - PQA820 12.1. Voltage Anomalies ....................22 12.2. Voltage and current harmonics ................23 12.2.1. Limit values for harmonics ..................24 12.2.2. Causes of the presence of harmonics ................ 24 12.2.3. Consequence of the presence of harmonics .............. 25 ...
-
Page 4: Precautions And Safety Measures
PQA819 - PQA820 1. PRECAUTIONS AND SAFETY MEASURES The instrument has been designed in compliance with directive IEC/EN61010-1 relevant to electronic measuring instruments. For your safety and in order to prevent damaging the instrument, please carefully follow the procedures described in this manual and read all notes preceded by the symbol with the utmost attention. -
Page 5: During Use
PQA819 - PQA820 1.2. DURING USE Please carefully read the following recommendations and instructions: CAUTION Failure to comply with the caution notes and/or instructions may damage the instrument and/or its components or be a source of danger for the operator. -
Page 6: General Description
2. GENERAL DESCRIPTION 2.1. FOREWORD This manual refers to PQA819 and PQA820 models. In the whole manual, the word “instrument” generically indicates PQA820 model, unless otherwise indicated. The instrument allows for a totally new approach to electric measurements. Using computer- aided instruments allows analyzing a huge amount of data with a simplicity and speed impossible to obtain with any other system. -
Page 7: Preparation For Use
PQA819 - PQA820 3. PREPARATION FOR USE 3.1. INITIAL CHECKS Before shipping, the instrument has been checked from an electric as well as mechanical point of view. All possible precautions have been taken so that the instrument is delivered undamaged. However, we recommend generally checking the instrument in order to detect possible damage suffered during transport. -
Page 8: Nomenclature
PQA819 - PQA820 4. NOMENCLATURE 4.1. INSTRUMENT DESCRIPTION CAPTION: 1. Indication LEDs 2. Description of the indication LEDs 3. USB port 4. Voltage and Current inputs 5. Keyboard Fig. 1: Instrument description 4.2. KEYBOARD DESCRIPTION The keyboard includes the following keys: ... -
Page 9: Initial Settings
PQA819 - PQA820 5. INITIAL SETTINGS CAUTION The instrument may be configured only through the relevant management software, except for the selection of the electrical system, which may also be performed through the SYSTEM key in the instrument's keyboard 5.1. - Page 10 PQA819 - PQA820 SYMBOL DESCRIPTION V1PE, V2PE, V3PE RMS value of voltage of Phase 1, Phase 2, Phase 3 with respect to PE V12, V23, V31 RMS value of delta voltages Freq. Mains frequency I1, I2, I3 RMS value of current of Phase 1, Phase 2, Phase 3 neutral...
- Page 11 PQA819 - PQA820 SYMBOL DESCRIPTION V1, V2, V3 RMS value of voltage of Phase 1, Phase 2, Phase 3 V12, V23, V31 RMS value of delta voltages Freq. Mains frequency I1, I2, I3 RMS value of current of Phase 1, Phase 2, Phase 3...
-
Page 12: Setting Type Of Clamp
PQA819 - PQA820 5.2. SETTING TYPE OF CLAMP The instrument is capable of managing two types of clamp meter: STD: standard clamp with iron core Flex: flexible clamp It is also possible to differentiate the type of clamp used for phase and neutral current with independent setting of used full scales. -
Page 13: Setting A Programmed Start And Stop
PQA819 - PQA820 5.7. SETTING A PROGRAMMED START AND STOP Through these parameters it is possible to set the start/stop modes of a recording. In detail: Recording of all selected quantities will be started at the beginning of START:MAN the first minute after the START/STOP key has been pressed by the operator (see §... -
Page 14: Measuring Procedures
PQA819 - PQA820 6. MEASURING PROCEDURES 6.1. CONNECTION IN A SINGLE-PHASE SYSTEM CAUTION The maximum rated voltage between inputs is 415V AC, CAT IV 300V to earth. Do not connect the instrument to voltages exceeding the limits given in this manual ... -
Page 15: Connection In A Three-Phase 3-Wire System
PQA819 - PQA820 6.2. CONNECTION IN A THREE-PHASE 3-WIRE SYSTEM CAUTION The maximum rated voltage between inputs is 415V AC, CAT IV 300V to earth. Do not connect the instrument to voltages exceeding the limits given in this manual ... -
Page 16: Connection In A Three-Phase 4-Wire System
PQA819 - PQA820 6.3. CONNECTION IN A THREE-PHASE 4-WIRE SYSTEM CAUTION The maximum rated voltage between inputs is 415V AC, CAT IV 300V to earth. Do not connect the instrument to voltages exceeding the limits given in this manual ... -
Page 17: Recording Of Electrical Parameters
PQA819 - PQA820 7. RECORDING OF ELECTRICAL PARAMETERS 7.1. STARTING RECORDING Recording can be started MANUALLY or AUTOMATICALLY. Once the setting phase has been completed and after quitting the menu mode, the instrument will start recording by following logic illustrated hereunder: ... -
Page 18: Memory Managements
PQA819 - PQA820 8. MEMORY MANAGEMENTS The instrument has approximately 8MB for storing the values of the measured quantities. Through the management software it is possible to receive information about the residual recording duration compatible with the residual memory space and the settings made on the instrument itself. -
Page 19: Transferring Data To The Management Software
PQA819 - PQA820 9. TRANSFERRING DATA TO THE MANAGEMENT SOFTWARE The connection between the instrument and the management may occur through: USB port by means connection with USB cable WiFi connection CAUTION It is not possible to transfer data while recording ... -
Page 20: Maintenance
PQA819 - PQA820 MAINTENANCE 10.1. GENERAL INFORMATION While using and storing the instrument, carefully observe the recommendations listed in this manual in order to prevent possible damage or danger during use: Do not use the instrument in environments with high humidity levels or high temperatures ... -
Page 21: Technical Specifications
PQA819 - PQA820 TECHNICAL SPECIFICATIONS 11.1. TECHNICAL CHARACTERISTICS Accuracy indicated as [%rdg +(num. dgt * resolution)] referred to 23°C±5°C, < 75%RH DC Voltage [Phase (+) – Neutral (-)] Range [V] Resolution [V] Accuracy (0.7rdg + 0.4V) 10.0 265.0 Voltage values <10.0V are zeroed... -
Page 22: Reference Guidelines
Integration period: 5, 10, 30s, 1, 2, 5, 10, 15, 60min Recording autonomy: > 30 days (@ IP = 10 minutes) (PQA820) > 230 days (@ IP = 15 minutes) (PQA819) Memory: 8Mbyte Communication interface (PC/Tablets): USB (PC only) / WiFi 11.4. -
Page 23: Appendix - Theoretical Outline
PQA819 - PQA820 APPENDIX – THEORETICAL OUTLINE 12.1. VOLTAGE ANOMALIES The instrument catalogs as voltage anomalies (sags, swells) all those RMS values, calculated every 10ms (@ 50Hz), which are out of the thresholds set upon configuration by 1% to 30% of a set reference value with a 1% step. -
Page 24: Voltage And Current Harmonics
PQA819 - PQA820 12.2. VOLTAGE AND CURRENT HARMONICS Any periodic non-sinusoidal wave may be represented by a sum of sinusoidal waves, each with a frequency which is a whole multiple of the fundamental, according to the relationship: ... -
Page 25: Limit Values For Harmonics
PQA819 - PQA820 12.2.1. Limit values for harmonics EN50160 guideline prescribes the limits for the Harmonic voltages the Supplier may put in network. In normal operating conditions, at any time in a week, 95% of the efficient values of... -
Page 26: Consequence Of The Presence Of Harmonics
PQA819 - PQA820 All this generates odd harmonics of the 50/60Hz line frequency. For this reason, nowadays the current in the transformers of the distribution boxes contains not only a 50Hz (or 60Hz) component, but also a 150Hz (or 180Hz) component, a 250Hz (or... -
Page 27: Definitions Of Power And Power Factor
PQA819 - PQA820 12.3. DEFINITIONS OF POWER AND POWER FACTOR In a generic electrical system, powered by a sequence of sinusoidal voltages, the following is defined: cos( Phase Active Power: (n=1,2,3) Phase Apparent Power: (n=1,2,3) ... -
Page 28: Conventions On Powers And Power Factors
PQA819 - PQA820 NOTES Please note that, strictly speaking, the expression of phase reactive power in a non- sinusoidal condition would be incorrect. As to why, it may be useful to think that both the presence of harmonics and the presence of reactive power produce, among other effects, an increase in in-line power losses due to a higher efficient value of current ... - Page 29 PQA819 - PQA820 SYMBOL MEANING NOTES Value of active power + Pfc+ Capacitive power factor + Positive quantities Pfi+ Inductive power factor + (user user) Value of capacitive reactive power + Value of inductive reactive power + Value of active power -...
-
Page 30: Information On The Measuring Method
PQA819 - PQA820 12.4. INFORMATION ON THE MEASURING METHOD The instrument is capable of measuring: voltages, currents, active powers, inductive and capacitive reactive powers, apparent powers, inductive and capacitive power factors and analogical or pulse parameters. All of these parameters are analyzed in a completely digital way: for each phase (voltage and current) 128 samples per period are taken, then repeating this operation for 18 consecutive periods. -
Page 31: Service
PQA819 - PQA820 SERVICE 13.1. WARRANTY CONDITIONS This instrument is warranted against any material or manufacturing defect, in compliance with the general sales conditions. During the warranty period, defective parts may be replaced. However, the manufacturer reserves the right to repair or replace the product. - Page 32 Via della Boaria 40 48018 – Faenza (RA) – Italie Tél : +39 0546-621002 (4 lignes r.a.) Fax : +39 0546-621144 E-mail : ht@htitalia.it http://www.ht-instruments.com...
Need help?
Do you have a question about the PQA819 and is the answer not in the manual?
Questions and answers