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Fluke 1745 Инструкция по эксплуатации онлайн [55/72] 4532
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Power Quality Logger
Measurement Theory
41
Active power of the
fundamental per phase
per interval
∑
=
⋅=
M
j
j
basbas
Ph
M
Ph
1
1
1
1
Total active power of the
fundamental for three
phases
∑
=
⋅=
3
1
11
k
ktotal
PhPh
Apparent power of the
fundamental per phase.
Basic value for 200 ms.
11
.1 IVSh
bas
=
Apparent power of the
fundamental per phase
per interval
∑
=
⋅=
M
j
j
bas
Sh
M
Sh
1
1
1
1
Power factor of the
fundamental per phase
1
1
1
1
cos
1
Qh
Qh
Sh
Ph
total
⋅=
ϕ
Total power factor on all
three phases
total
total
total
total
Qh
Qh
ShShSh
Ph
1
1
111
1
cos
321
1
⋅
++
=
ϕ
Active energy per phase
and total
Active power accumulated on each logging
interval
Sign of PF, tan φ, cos φ:
Sign “+” : Q positive (“inductive”)
Sign “-“ : Q negative (“capacitive”) independent of the sign of active power P
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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