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Fluke 1745 [26/72] Using the 1745 power quality logger
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1745
Users Manual
12
Using the 1745 Power Quality Logger
This section explains how to operate the 1745 Power Quality Logger. You
should also refer to the PQ Log Users Manual to become familiar with the
software you use to prepare the Logger for use and download logged data.
A typical logging session includes four steps:
1. Preparing the Logger for use with the PQ Log software.
2. Installing the Logger at the logging site.
3. Leaving the Logger to collect data for a period.
4. Downloading and evaluating the logged data.
These steps are described in the following pages.
About Logging Jobs
Logging jobs are defined using the PQ Log software, and transferred to the
Logger over the RS-232 cable. Each job contains the following information:
• Logging function P or A
• Measuring period, defined by start and end times
• Time activated, switch or immediate job
• Nominal voltage
• Power type (wye, delta, etc.)
• Averaging period length
• Logging time period
• Interharmonics and signaling voltages
• Limit values for events
• Memory model for events: circular (first-in/first-out, continuous), or
linear (quit logging when logging period is finished)
• Logging of current - neutral wire
• Optional converter ratios for current and voltage if using potential
transformers (PTs) and current transformers (CTs) at a medium-
voltage network site
Содержание
- Power quality logger 1
- Power quality logger users manual 1
- Users manual 1
- Fluke corporation p o box 9090 everett wa 98206 9090 u s a 2
- Fluke europe b v p o box 1186 5602 bd eindhoven the netherlands 2
- Limited warranty and limitation of liability 2
- Limites de garantie et de responsabilite 3
- Beschränkte garantie und haftungsbegrenzung 4
- Fluke corporation p o box 9090 everett wa 98206 9090 usa 4
- Fluke europe b v p o box 1186 5602 bd eindhoven niederlande 4
- Fluke corporation p o box 9090 everett wa 98206 9090 usa 5
- Fluke europe b v p o box 1186 5602 bd eindhoven paesi bassi 5
- Garanzia limitata e limitazione di responsabilità 5
- Fluke corporation p o box 9090 everett wa 98206 9090 eua 6
- Fluke europe b v p o box 1186 5602 bd eindhoven holanda 6
- Garantia limitada e limitação de responsabilidade 6
- Fluke corporation p o box 9090 everett wa 98206 9090 ee uu 7
- Fluke europe b v p o box 1186 5602 bd eindhoven holanda 7
- Garantía limitada y limitación de responsabilidad 7
- 有限担保和有限责任 8
- Table of contents 9
- Title page 9
- List of tables 11
- Table title page 11
- Figure title page 13
- List of figures 13
- Information and pc software cd 15
- Introduction 15
- Power quality logger 15
- Logger power supply 16
- Logging functions 16
- Safety instructions 18
- Symbols 18
- Warnings 18
- W x warnings 19
- Qualified personnel 20
- Standard equipment and optional accessories 20
- Inspect the contents of the shipping box for completeness and damage report any damage to the shipper 21
- Power quality logger 21
- 8 1 4 5 22
- Current input 22
- Features 22
- Figure 2 1745 power quality logger front view 22
- Logging status 22
- Start stop 22
- Supply input 22
- This section introduces the logger s controls indicators and other features refer to figure 2 and table 4 22
- Users manual 22
- Voltage input 22
- Power quality logger 23
- Power network configurations 25
- Working with logged data 25
- About logging jobs 26
- Using the 1745 power quality logger 26
- Preparing the logger for use 27
- Current input 28
- Figure 3 supplying operating power to the logger 28
- Logging status 28
- Max 660 v 28
- Power in parallel with test leads power from wall outlet 28
- Power supply leads 28
- Start stop 28
- Supply input 28
- Users manual 28
- Voltage input 28
- Voltage test leads 28
- Connecting current probes 29
- Logging with voltage converters 29
- Test leads markings 29
- Connecting the logger 30
- W x warnings 30
- Connections in 3 phase 4 wire wye systems 33
- Current input 33
- Figure 4 logging in a 3 phase 4 wire wye system 33
- Figure 4 shows the connections for logging 3 phase 4 wire wye systems 33
- L1 l2 l3 n 33
- Logging status 33
- Power quality logger 33
- Start stop 33
- Supply input 33
- Using the 1745 power quality logger 33
- Voltage input 33
- Connections in 3 phase 3 wire delta systems 34
- Current input 34
- Figure 5 logging in a 3 phase 3 wire delta system 34
- Figure 5 shows the connections for logging 3 phase 3 wire delta systems 34
- L1 l2 l3 n 34
- Logging status 34
- Power supply 34
- Start stop 34
- Supply input 34
- The test lead n can be left open or connected to ground potential 34
- Users manual 34
- Voltage input 34
- Connections for single phase logging 35
- Current input 35
- Figure 6 shows the connections for logging single phase logging systems 35
- Figure 6 single phase logging 35
- Logging status 35
- Power quality logger 35
- Power supply 35
- Start stop 35
- Supply input 35
- Using the 1745 power quality logger 35
- Voltage input 35
- Connections for medium voltage networks 36
- Current input 36
- Figure 7 measuring 3 phase voltages in a 3 wire delta system with three voltage converters 36
- In a 3 phase 3 wire delta system with three separate voltage converters and three current transformers the logger can measure phase phase p p delta or phase n p n wye see figure 7 36
- Logging status 36
- Power supply 36
- Start stop 36
- Supply input 36
- Users manual 36
- Voltage input 36
- Current input 37
- Figure 8 two element delta connections 37
- Figure 9 shows the connections for two element delta aron or blondel metering connections 37
- Logging status 37
- Power quality logger 37
- Power supply 37
- Start stop 37
- Supply input 37
- Using the 1745 power quality logger 37
- Voltage input 37
- Completing the logging job 38
- Logging 38
- Evaluating the logged data 39
- Methods of logging 39
- Connection nominal voltages wye delta max input voltage 40
- Figure 9 basic logger setup parameters 40
- Table 6 measuring ranges 40
- Table 6 shows the measuring ranges of the logger and figure 9 shows the selection for input ranges during job processing 40
- The software calculates the correct measuring range depending on the nominal voltage 20 overflow with 40
- Users manual 40
- Voltage ranges 40
- Resolution accuracy 41
- Signal sampling 41
- Voltage variations 41
- Averaging period 42
- Min max values 43
- Voltage interruptions 44
- Voltage dips and swells 45
- Voltage harmonics 45
- Current harmonics 46
- Mains signaling 46
- I thdi 47
- Thd v in function a 47
- V v thd 47
- Calculation of thd in measuring function p 48
- I i thdi 48
- Thd measuring function p 48
- V v thdv 48
- Flicker 49
- Formula for plt function 49
- Pst plt 49
- Crest factor cf 50
- Current logging 50
- Frequency 50
- Logging function a 50
- Unbalance 50
- Measurement theory 52
- P q ϕ tan 54
- Q p s d 54
- Disposal 56
- Lithium battery 56
- Maintenance 56
- Logging parameters overview 57
- Power quality logger 57
- Table 7 shows an overview of the logging parameters 57
- Technical specifications 57
- General information 58
- Maximum number of intervals for logging funtion p 58
- The maximum recording period can be calculated by multiplying the interval time defined in pq log with the maximum number of intervals in the following table 58
- Environmental specifications 59
- Power quality logger 59
- Power supply 59
- Input voltage 60
- Measurement 60
- Current input for clamp 61
- Current input with flexi set 61
- Power quality logger 61
- Current logging values 62
- Events dips swells interruptions 62
- Flicker 62
- General specifications 62
- Rms logging slow voltage variations 62
- Analysis of logging data 63
- Harmonics logging function a only 63
- Power p s p 63
- Power quality logger 63
- Programming and analysis is done by pq log software on pc 63
- Statistics 63
- Thdv thdi per iec en 61000 4 7 class b 63
- Logging function parameters 64
- Logging values 64
- Applications 65
- Pq log pc application software 66
- Live reading online test 67
- Ascii export 68
- Timeplot diagram 69
- Cumulative frequency harmonics 70
- Unipede disdip table 70
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