PWS 3.3
Portable Working Standard
and Power Quality Analyzer
Page 1
April 2011
Advantages / Benefits
Working Standard Functions
 20 mV ... 600 V (phase-neutral)
 1 mA ... 12 A direct connection
 10 mA ... 100 A via clamp-on CTs
 Measurement of electrical
parameters (UI, PQS, f, PF)
incl. vector and waveform
display, harmonic analysis
 Up to 2 pulse inputs
 Instrument transformer testing
(CT/PT burden, CT/PT ratio)
 Accuracy  0.1 % /  0.05 %
Options:
 CALSOFT Software
 Clip-on CTs: 1000 A  LEMflex© up to 3000 A  LiteWire Sensors
Page 2
April 2011
Advantages / Benefits
Power Quality Analysis Functions
 3 voltages/4 current channels
 Harmonics  Interharmonics
Signal voltages
 Dips  Swells  Interruptions
 Voltage unbalance
 Flicker
 Transient capture
 200s (10 kHz)
 IEC 61000-4-30 Class A
 15 min battery buffered
 EN50160 reports
Page 3
April 2011
Advantages / Benefits
Communication
 USB (integrated, standard)
 Ethernet (integrated, standard)
 Analog modem (integrated, optional)
 GSM modem (external, optional)
Memory & GPS Time Synchronisation
 Memory: flash memory card
 GPS Time Synchronisation
(integrated, optional)
Page 4
April 2011
Connections
Top view
[1]
[2]
Current inputs I1, I2, I3
Current outputs I1*, I2*, I3*
[3]
[4]
Phase connection U1, U2, U3
Neutral connection UN
[5]
[6]
Connection for Clamp-on CT1
Connection for Clamp-on CT2
[7]
[8]
Connection Clamp-on CT IN/IE
Impulse input / output
Page 5
April 2011
Connections
Top view
[9] Impulse input
[10] Ethernet connector
[11] Modem connector
[12] USB connector
[13] GSM modem
[15] Mains switch
[14] Compact flash card
[16] Auxiliary supply connector
Page 6
April 2011
Connections
Bottom view
[17] Battery compartment
(10 x R6/Mignon/AA 1.2V / 1.2 Ah NiMH accumulators)
Page 7
April 2011
Connections
Front view
[18]
[19]
[20]
[21]
[22]
[23]
[24]
Color LCD display
Alphanumeric keypad
Menu card keys
Cursor keys
Enter key
Exit key
Connector for
external keyboard
Page 8
April 2011
Optional current clamps
to the PWS 3.3
 Error compensated clampon CT’s for measurements
in the range
5 mA … 10A and
10 mA … 100 A
 Clamp-on CTs for measurements in the range
100 mA … 1000 A
Page 9
April 2011
Optional current clamps
to the PWS 3.3
 Flexible current transformers FLEX 3000 for
measurements up to
30 / 300 / 3000 A
 Hot sticks for measurements
on high voltage potential
- AmpLiteWire up to 2000 A
- VoltLiteWire up to 40 kV
Page 10
April 2011
Operation Concept
Symbols
Display
Control Elements



Page 11
April 2011
Software
Meter – Main Menu
Meter Testing 
Measurement 
Harmonics, Oscilloscope 
Energy Measurement 
Transformer Test 
Special Functions 
Installation (Setup) 
Page 12
April 2011
Software
Meter – Error Measurement
Page 13
April 2011
Software
Meter – Measurement of UI, PQS and UIPQS
Page 14
April 2011
Software
Meter – Wave form, Harmonics and Vector Diagram
Page 15
April 2011
Software
Meter – Energy Measurement
Page 16
April 2011
Software
Meter – Register Test
Page 17
April 2011
Software
Meter – Voltage Burden Measurement
(25% SN ≤ Sb ≤ 100% SN)
Page 18
April 2011
Software
Meter – Current Burden Measurement
(25% SN ≤ Sb ≤ 100% SN)
Page 19
April 2011
Software
Meter – Voltage Ratio Measurement
Page 20
April 2011
Software
Meter – Current Ratio Measurement
Page 21
April 2011
Software
Meter – Special Functions
Page 22
April 2011
Software
Power Quality – Main Menu
First Row

Online Measurement 
Power Quality Recording 
Power Quality Analysis 
Page 23
April 2011
Software
Power Quality – Recording menu
Second Row

Recording profile 
Recording configuration 
Recording setup 
Start / Stop PQ Recording 
Page 24
April 2011
Software
Power Quality – Recording profile / setup / configuration
Page 25
April 2011
Software
Power Quality – Online Measurement
Page 26
April 2011
EN 50160 Power Quality Standard
Low voltage: Un = 230 V
Page 27
April 2011
EN 50160 Power Quality Standard
Low voltage: Un = 230 V
How to read the table, two examples:
EN 50160, 2.1 Frequency
EN 50160, 2.6 / Supply voltage interruptions, short
Page 28
April 2011
IEC 61000-4-30 Standard
Power Quality Measurement Methods
Class A performance
 Used, where precise measurement is necessary
 Contractual applications
 Verification compliance with standard
 Resolving disputes
Class B performance
 Low uncertainty
 Statistical surveys
 Trouble shooting
Page 29
April 2011
IEC 61000-4-30 Standard
Power Quality Measurement Methods
Class A requirement
 Aggregation algorithm
 Time clock uncertainty (at least 1s/24h)
 Flagging concept to avoid counting events several times
Power quality parameters
 Power frequency
 Voltage and current magnitude
 Flicker
 Voltage Dips, interruptions, swells
 Current inrushes
 Voltage unbalances
 Harmonics/Interharmonics
 Voltage signals
 Transients
Page 30
April 2011
Software
Power Quality – Online Measurement
Advantages
 Quick configuration / start of recording of all PQ quantities
 Ideal for short-term analysis of PQ problems
 Recording/Analyzing of PQ situation during meter test
 On-line analyzing during recording
Limitations
 Recording time limited to max. 10 hours
 Recording must be defined individually for each PQ quantity
 Storing not possible; only screen shot
Page 31
April 2011
Software
Power Quality – Online Measurement
UIPQSf Recording
Function / Firmware
Aggregation acc. IEC 61000-4-30 Cl. A
Page 32
April 2011
Software
Power Quality – Online Measurement
Dip / Swell / Interruption Analysis
Function / Firmware
(Dip Analysis)
Theory (acc. IEC 61000-4-30 Cl. A)
 Dip / Interruption Analysis
Page 33
April 2011
Software
Power Quality – Online Measurement
Dip / Swell / Interruption Analysis
Function / Firmware
(Dip Analysis)
Theory (acc. IEC 61000-4-30 Cl. A)
3-phase Interruption 3-phase Dip Analysis
Analysis
Page 34
April 2011
Software
Power Quality – Online Measurement
Dip / Swell / Interruption Analysis
Function / Firmware
(Swell Analysis)
Theory (acc. IEC 61000-4-30 Cl. A)
Exceeding threshold of a certain
percentage of
Udin (declared input voltage)
Page 35
April 2011
Software
Power Quality – Online Measurement
Harmonics / Interharmonics Analysis
Function / Firmware
Aggregation acc.
IEC 61000-4-30 Cl. A)
Page 36
April 2011
Software
Power Quality – Online Measurement
Harmonics / Interharmonics Analysis
Function / Firmware
Theory
(acc. IEC 61000-4-30 Cl. A)
Page 37
April 2011
Software
Power Quality – Online Measurement
Harmonics / Interharmonics Analysis
Page 38
April 2011
Software
Power Quality – Online Measurement
Transient Capture
Recorder / Table Display 
Autoscaling On / Off 
Display Min./Max. Values 
Start/Stop Recording 
Saving / File Management 
Exit to previous Menue 
Page 39
April 2011
Software
Power Quality – Online Measurement
Signal Voltage Analysis
 Setting of Signal Frequency
 Auto Detection of Signal Frequency
Setting of Nominal Voltage
Setting of Signal Voltage Level
Page 40
April 2011
Software
Power Quality – Online Measurement
Flicker Measurement
Page 41
April 2011
Software
Power Quality – Online Measurement
Unbalance Measurement
Zero sequence voltage
unbalance factor [%]
Negative sequence voltage
unbalance factor [%]
Page 42
April 2011
Software
Power Quality – Analysis
Recorder
Analysis
Bar Graph
Analysis
Result
Summary
Page 43
April 2011
Software
Data Base – Main Menu
Administrative data 
Meter data 
Transformer data 
Load point data 
View test result 
Basic settings 
Page 44
April 2011
Software
Data Base – Administrative Data
Page 45
April 2011
Software
Data Base – Meter Data
Page 46
April 2011
Software
Data Base – Transformer Data
Page 47
April 2011
Software
Data Base – View Test Results
Page 48
April 2011
Windows©-Software
CALSOFT – Main Functions
Page 49
April 2011
Windows©-Software
CALSOFT – Power Quality
PQ Online
Measurement
Page 50
April 2011
Windows©-Software
CALSOFT – Power Quality
PQ Recording
Page 51
April 2011
Windows©-Software
CALSOFT – Power Quality
PQ Analysis
Page 52
April 2011
Windows©-Software
CALSOFT –
PQ Online Measurement
Advantages
 Same functions as
in PWS 3.3 device
 Analysis functions
organized by folders
Page 53
April 2011
Windows©-Software
CALSOFT –
PQ Online Measurement
Page 54
April 2011
Windows©-Software
CALSOFT –
PQ Recording/Evaluation Profile
Functions
Recording/Evaluation
Profile
Recording Options
Setup U and I inputs
Start/Stop of Recording
Page 55
April 2011
Windows©-Software
CALSOFT –
PQ Recording/Evaluation Profile
Functions
 Preparation/Saving
of analysis profiles
 Transfer of analysis
profiles to the device
Page 56
April 2011
Windows©-Software
CALSOFT –
PQ Recording/Evaluation Profile
Page 57
April 2011
Windows©-Software
CALSOFT –
PQ Recording Options - Start time/length
Functions
 Configuration of
recording start
 Configuration of
recording in blocks
 Definitions of time
block interval
Page 58
April 2011
Windows©-Software
CALSOFT –
PQ Analysis
Functions
General Info
Recorder Analysis
Bar Graph Analysis
Summary Result
Overview
Page 59
April 2011
Windows©-Software
CALSOFT –
PQ Analysis
Page 60
April 2011
ETHERNET communication
PWS 3.3 as DHCP Server
 IP - address PWS 3.3
can be fixed
 PWS 3.3 can allocate
IP-address e.g. to
locally connected PC
Page 61
April 2011
ETHERNET communication
PWS 3.3 as DHCP Client
 PWS 3.3 will be given
IP-address from server
(e.g. if installed in a inhouse or remote network)
Page 62
April 2011