Entes EMK-01 User manual

1
Class A
Quality Analyzer
EMK-01

2
Content
1. Introduction..................................................................................................................................................3
2. Safety Instructions.......................................................................................................................................3
3. Box Content.................................................................................................................................................3
4. Device Description.......................................................................................................................................4
4.1. Front Panel..........................................................................................................................................4
4.2. Rear Panel ..........................................................................................................................................4
5. Measured Parameters.................................................................................................................................5
6. Installation ...................................................................................................................................................6
7. Connection ..................................................................................................................................................6
7.1. Grounding Conductor..........................................................................................................................7
7.2. Supply Voltage ....................................................................................................................................7
7.3. Voltage Measuring Inputs....................................................................................................................7
7.4. Current Measuring Inputs....................................................................................................................7
7.5. RS485 ................................................................................................................................................8
7.6. Ethernet...............................................................................................................................................8
7.6.1. Connection of EMK-01 to LAN.................................................................................................8
7.6.2. Connection of EMK-01 to Wi-Fi ...............................................................................................8
7.6.3. Connection of EMK-01 to LAN with NAT server.......................................................................9
7.7.USB......................................................................................................................................................10
7.8. Temperature Sensor............................................................................................................................10
7.9. Digital Inputs / Outputs........................................................................................................................10
8. Device Settings............................................................................................................................................11
8.1. Language ............................................................................................................................................11
8.2. Measurement – Main Parameters.......................................................................................................11
8.2.1. Connection Type .....................................................................................................................12
8.2.2. Nominal Voltage.......................................................................................................................13
8.2.3. Nominal Current.......................................................................................................................13
8.2.4. Flicker ......................................................................................................................................13
8.2.5. Ripple Control ..........................................................................................................................13
8.2.6. Voltage Transformers...............................................................................................................13
8.2.7. Current Transformers...............................................................................................................13
8.2.8. Averaging ................................................................................................................................14
8.2.9. Energy......................................................................................................................................14
8.3. Communication Settings .....................................................................................................................14
8.3.1. Ethernet ...................................................................................................................................14
8.3.2. Web Server ..............................................................................................................................15
8.3.3. Modbus TCP ............................................................................................................................15
8.3.4. FTP Server...............................................................................................................................15
8.3.5. TCP Converter .........................................................................................................................15
8.3.6. RS485 ......................................................................................................................................15
8.4. Analyser ..............................................................................................................................................16
8.5. NTP Server / Time Zone .....................................................................................................................16
8.6. E-mail..................................................................................................................................................16
8.7. Transient .............................................................................................................................................17
8.8. Events .................................................................................................................................................18
8.8.1. Voltage Dip ...............................................................................................................................19
8.8.2. Voltage Swell............................................................................................................................19
8.8.3. Rapid Voltage Change (RVC)...................................................................................................19
8.9. Inputs / Outputs...................................................................................................................................20
8.10. Alarms ...............................................................................................................................................20
8.12. Data Storage.....................................................................................................................................22
8.13. Memory Settings ...............................................................................................................................22
8.14. About.................................................................................................................................................22
9. Operation.....................................................................................................................................................22
9.1.Numeric................................................................................................................................................23
9.1.1. Flicker........................................................................................................................................23
9.2. Harmonics...........................................................................................................................................23
9.3. Vectors ................................................................................................................................................23
9.4. Bar Graphs..........................................................................................................................................24
9.5. Scope..................................................................................................................................................24
9.6. Events .................................................................................................................................................24
9.6.1. List of Events ............................................................................................................................24
9.6.2. Rapid Voltage Change (RVC)...................................................................................................25
9.6.3. List of Transients.......................................................................................................................25
9.6.4. Power Cuts ...............................................................................................................................25
10. Web Interface ............................................................................................................................................26
11. Firmware Update .......................................................................................................................................26
12. Technical Specications ............................................................................................................................27

3
1. Introduction
EMK-01 Class A quality analyzer is designed for measurement of network quality in LV and MV
according to the norm EN 50160.
Technology of measurement is performed according to the norm “IEC 61000-4-30:
Electromagnetic compatibility (EMC) – Part 4-30: Testing and measurement methods – Power
quality measurement method “, measurement class “Class A”.
EMK-01 Class A quality analyzer is designed for measurement and monitoring of electrical
parameters in 2, 3 and 4 conductor networks and in TN and TT grids.
2. Safety Instructions
The device comply the standard EN 61010-1: Safety requirements for electrical equipment for
measurement, control and laboratory use.
• Installation of the device can be done by qualied and authorized person only.
• Device should not be installed in the environment with increased humidity and close to
explosive gases.
• Use the device in accordance instructions written in the user manual.
• Before the disconnecting of CT measuring circuit assure that terminals of CT are short
circuited.
• Installation and connection changes can be done without supply voltage only.
• Do not apply supply, measuring voltage and current higher than allowed.
3. Box Content
• EMK-01 Class A quality analyzer
• Mounting holder with screws – 2 pieces
• Temperature sensor
• User manual
• Test report

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4. Device Description
4.1. Front Panel
00:30
01.01.2000
Numeric
Vectors
Scope
Events
Harmonics
Bargraphs
Optional
Settings
Main menu
Picture 1. Front panel label
Exit key for canceling or return
Cursor key for moving up in the menu and increasing parameter value
Cursor key for moving down in the menu and decreasing parameter value
OK key for entering the menu and parameters
Fn (zoom) key for changing function of other buttons
4.2. Rear Panel
Picture2. Rear panel label

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5. Measured Parameters
EMK-01 Class A quality analyzer is designed for measurement and monitoring of electrical
parameters in 2, 3 and 4 conductor networks in TN and TT grids. EMK-01 quality analyzer
architecture is based on fast 32 bits RISC microprocessor which provides high computing power
to assure the device being fully according to the norm IEC 61000-4-30 Class A
Parameter
L1 L2 L3 L4 L1-2 L2-3 L3-1 ΣL1-3 ΣL1-4
Max Min AVG
Measuring
range
Displaying
range
Accuracy
Phase voltage (Phase – neutral) ● ● ● ● ● ● ● 2 ... 600 V 0 ... 1 MV ± 0,1 %
Line voltage (Phase – phase) ● ● ● ● ● ● 4 ... 1000 V 0 ... 1 MV ± 0,1 %
Frequency ● ● ● ● 40 ... 70 Hz
40 ... 70 Hz ± 10 mHz
Current ● ● ● ● ● ● ● ● ● 0,001 ... 6 A 0 ... 1 MA ± 0,1 %
cosφ ● ● ● ● ● ● ●
0.01 L ........ 0.01 C 0.01 L ........ 0.01 C
± 1 %
Power factor ● ● ● ● ● ● ●
0.01 L ........ 0.01 C 0.01 L ........ 0.01 C
± 1 %
THD-U LN ● ● ● ● ● ● ●
0 ... %99,9 0 ... %99,9 ± 1 %
THD-U LL ● ● ● ● ● ●
0 ... %99,9 0 ... %99,9 ± 1 %
THD-I ● ● ● ● ● ● ●
0 ... %99,9 0 ... %99,9 ± 1 %
Voltage harmonics ● ● ● ● ● ● ●
0 ... %99,9 0 ... %99,9 Class 1
Group of inter harmonics U ●●●●
0 ... %99,9 0 ... %99,9 Class 1
Group of harmonics U ●●●●
0 ... %99,9 0 ... %99,9 Class 1
Active power harmonics ●●●● 0 ... %99,9 0 ... %99,9 Class 1
Reactive power harmonics ●●●●
0 ... %99,9 0 ... %99,9 Class 1
Current harmonics ● ● ● ● ● ● ●
0 ... %99,9 0 ... %99,9 Class 1
Group of inter harmonics I ●●●●
0 ... %99,9 0 ... %99,9 Class 1
Group of harmonics I ●●●●
0 ... %99,9 0 ... %99,9 Class 1
Short-term icker ● ● ● ● ● ● ● 0...20.0 Pst
0...20.0 Pst Class A
Long-term icker ● ● ● ● ● ● ● 0...20.0 Plt 0...20.0 Plt Class A
Under voltage ● ● ● ● ● ● ● ● ● ● 0 ... %100 0 ... %100 ± 0,2 %
Over voltage ● ● ● ● ● ● ● ● ● ● 0 ... %100 0 ... %100 ± 0,2 %
Unbalanced U ● ● ● 0 ... %100 0 ... %100
± 0,15 %
Neutral point displacement ● ● ● 10 ... 600 V 0 ... 1 MV ± 0,2 %
K factor ●●●●
Unbalanced I ● ● ● ± 0,5 %
Transient ● ● ● ● 25 μs
Events ●●●● 10 ms
Ripple control signal ● ● ● ● ● ● ● ● ● ●
Active power ● ● ● ● ● ● ● ● ● 0... 10,8 kW
0 ... 999 GW ± 0,4 %
Reactive power ● ● ● ● ● ● ● ● ●
0... 10,8 kvar 0 ... 999 Gvar ± 0,4 %
Apparent power ● ● ● ● ● ● ● ● ●
0... 10,8 kVA 0 ... 999 GVA ± 0,2 %
Distortion power ● ● ● ● ● ● ● ● ● ± 0,5 %
Active energy +/- ● ● ● ●
0 ... 999 GWh 0 ... 999 GWh Class 0.2
Inductive reactive energy +/- ● ● ● ● 0 ... 999 Gvarh 0 ... 999 Gvarh Class 0.2*
Capacitive reactive energy +/- ● ● ● ● 0 ... 999 Gvarh 0 ... 999 Gvarh Class 0.2*
Temperature ● ● ● ± 1 °C
* fundamental Table 1. Measured and displayed parameters

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6. Installation
EMK-01 is prepared for wall mounting in the xed switch boards. In order to assure well
ventilation, EMK-01 has to be installed vertically. There has to be empty space at least 60 mm at
the top and bottom, and 20 mm at the sides..
Picture 3. Dimensions
EMK-01 is xed into switchboard wall by two clips that are placed on the device at the bottom and top.
7. Connection
The level and type of used power supply voltage has to be the same as it is written on the terminal
plate label. The power supply voltage of the device is 230 VAC 50 Hz (+%10,-%15).
Voltage measurement circuit as well as power supply input have to be connected via circuit
breaker or power switch, and fuse (2 ... 10 A) which are placed close to the device for easy access.
Current measurement circuits have to be connected via current transformers, either ../5A or ../1A
ratio.
EMK-01
Picture 4. Device connection at TN-C network

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7.1. Grounding Conductor
The grounding conductor has to be connected as a rst terminal. Grounding terminal is realized by
threaded pole with 3 mm diameter and it is marked by symbol .
7.2. Supply Voltage
Supply voltage is required to operate EMK-01. The type and level of necessary supply voltage is
written on the rear label. Before applying the supply voltage, make sure that the voltage level and
system frequency match the details on the label. The connection cables for the supply voltage
must be connected using a fuse. It is recommend to use a fuse (6A characteristic C).
7.3. Voltage Measuring Inputs
Device has four measuring input with input impedance 4 MΩ suitable for measurement according
to category CATIII 600 V.
Each voltage measurement input have to be connected via circuit breaker or power switch, and
fuse (10A characteristic C) which are placed close to the device.
Important
Supply voltage has to be from the same grid as measuring voltages.
Notice
EMK-01is not designed for measuring DC voltage!
EMK-01 is not designed for usage in SELV grids!
Notice
If the voltage measuring inputs are connected over the voltage measuring transformers the
power of measuring transformer power must be at appropriate level. Voltage measuring inputs
have 5 mW self-consumption. Recommendation from measuring transformer producers is to
have loaded voltage measuring transformer on 70% of maximum power for the best accuracy.
İ
İ
7.4. Current Measuring Inputs
Device has four current measuring inputs for indirect measurement via current measuring
transformer, either ../5A or ../1A ratio. CT ratio is freely adjustable from a device or via PC
software.
Important
Current inputs maximum permanent capability is 8.5A.
Important
Before opening the current circuit be sure that measuring terminals of current trans-
former are connected together.
Notice
EMK-01 is not designed for DC current measurement !
İ

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7.5. RS485
EMK-01 has built-in one RS485 interface supporting Modbus RTU protocol. Connection of RS485
bus to the device is on separate terminals by two wires A and B. Shielding is not required
Notice
EMK-01 does not have built in termination resistor. If the device is at the end of
RS485 bus, it should be terminated by 120 Ω resistor.
RS485 interface is fully galvanic insulated.
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7.6. Ethernet
The device is equipped by Ethernet interface 10/100Mbit/s with RJ45 connector. It should be
used the cable CAT5 type for connection. The conguration of Ethernet is dened by the network
administrator and has to be set on EMK-01 correspondingly (See Chapter 8.3.1).
Important
If the network conguration is not known, the Ethernet cable should not be plugged
into the device.
7.6.1. Connection of EMK-01 to LAN
Make a connection to the active network item (switch, hub and router) via UTP cable.
Notice
EMK-01 does not support DHCP. The device’s IP address has to be congured
manually at the device side.
İ
7.6.2. Connection of EMK-01 to Wi-Fi

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7.6.3. Connection of EMK-01 to LAN with NAT server
If there is request for remote access (from Internet) to EMK-01 which is placed in the local network
behind the router with active NAT server, the following parameters conguration to be dened on
the router.
For access to web server of EMK-01, there has to be created port forwarding (virtual server):
For access to FTP server of EMK-01 (needed for software), there has to be created port forwarding
(virtual server):
Notice
Number of port of 80, 21 is possible change on router. Range of ports 50000 …
50005 is xed and it is not possible to change it.
İ
On EMK-01 device, it is necessary to set following parameters in:
● IP - public
● FTP: 21 (factory value)
● user name: admin (factory value)
● password: 1234 (factory value)
Notice
For communication with FTP server of EMK-01 within local network is the IP-public
parameter set on the same as IP of the device.
For communication with FTP server of EMK-01from the Internet is the IP-public
parameter set on public IP obtained from Internet provider.
İ

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7.7.USB
The device has one USB interface of type B for direct connection of EMK-01 to the PC. After
connection of EMK-01 via USB cable to the PC, it is necessary to select correct communication
interface at software.
7.8. Temperature Sensor
Temperature sensor is connected directly to EMK-01 inputs 20 and 21 according to the picture 2.
The sensor is NTC type with resistance 10 kΩ / 25°C.
7.9. Digital Inputs / Outputs
The device is equipped by two optically – isolated transistor inputs / outputs. The outputs working
mode is fully adjustable as an alarm output, remotely controlled output or pulse output.
Picture 5. Connection of inputs / outputs

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8. Device Settings
EMK-01 device can be congured from panel screen for most of essential parameters. All settings
available at the device screen and several others are available also in software. In this chapter the
settings of the device will be completed by appropriate settings via software.
Settings
00:30
01.01.2000
English
- >
- >
- >
- >
- >
- >
At main screen, move to parameter Settings to access device various conguration sub-menu.
Some of the device parameters and functions can be enabled and congured only by PC and
software.
8.1. Language
Default language of EMK-01 is English. Select the appropriate language from the list and conrm
it. Device menu will turn immediately to the selected language.
8.2. Measurement – Main Parameters
All settings related to measuring circuits connection type, measuring transformers and type of
parameter calculation are adjusted in Measurement setting.
Measurement
00:30
01.01.2000
Connection type
Frequency
Rated voltage
Rated current
Ripple control
Voltage transformers
Current transformers
Flicker
Erase Max/Min
Averaging
Averaging period
4UN_4I
50Hz
230V
5A
- >
230V:230V
5A:5A
230V - 50 Hz
Static Window
5s
Parameter Description Factory setting Setting range
Connection type Denes the type of network and measuring circuit connection 4UN_4I Chapter 8.2.1
Frequency Denes the nominal system frequency 50 Hz 45 ... 75 Hz
Rated voltage Network nominal phase voltage 230 V 1 V ... 750 kV
Rated current Network nominal phase current 5 A 1 A ... 750 kA
Ripple control Adjustable by software 50 Hz 50 Hz ... 3 kHz
Voltage Tr. Primary and secondary voltage of measuring voltage transformer 230 V / 230 V 1 ... 750 kV
Current Tr. Primary and secondary current of measuring current transformer 5 A / 5 A 1 ... 750 kA
Flicker Settings of the nominal voltage and frequency for icker calculation 230 V – 50 Hz 120/230 V, 50/60 Hz
Erase Max/Min Deletes all saved maximum and minimum of measured parameters No Yes / No
Averaging Type of averaging period Static Static / Sliding
Averaging period Time for averaging period setting 5 s 1 ... 3600 s

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8.2.1. Connection Type
EMK-01 is designed for various connections according to the grid type and measurement needs.
Connection setting denes the types of network system in which EMK-01 is connected. The main
connection diagram of EMK-01 is shown in chapter 7.3. In the following tables are shown all
possible connection variants that can be dened in the device menu..
Connection for asymmetric loads in TN-C-S grids Connection for asymmetric loads in TN-C or TN-C-S grids
Connection for single-phase loads Connection for symmetric loads with two CTs only
Connection for asymmetric loads in TN-C-S grids Connection for MV grid (Aron connection)

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Connection for IT networks
8.2.2. Nominal Voltage
Nominal voltage setting is fundamental setting used for thresholds calculation for voltage events
and transients. Appropriate value of phase nominal voltage has to be set.
8.2.3. Nominal Current
Nominal current setting is fundamental value setting used for threshold calculation for current
events.
8.2.4. Flicker
Device calculates icker according to the norm EN 61000-4-15. It provides values for short-
term icker (10 minutes), long-term icker (2 hours). For correct calculation of both ickers, it is
necessary to set correct nominal values used in the country standards. Available settings are:
• 230 V – 50 Hz
• 230 V – 60 Hz
• 120 V – 50 Hz
• 120 V – 60 Hz
8.2.5. Ripple Control
Ripple control o󰀨ers feature that provides information about e󰀨ective voltage value for particular
harmonic frequency of measured signal. The frequency of ripple control is adjustable from 50 Hz
till 3000 Hz with decimal setting option.
8.2.6. Voltage Transformers
If the voltage transformers are used, the settings of primary and secondary voltage have to be
congured. Both voltage levels (primary and secondary) are set in Volts.
8.2.7. Current Transformers
EMK-01 device has 4 current inputs for indirect measurement via current transformers with
secondary current 5A or 1A. In case of current transformer usage, the primary and secondary
current value of CT has to be set.

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8.2.8. Averaging
This setting denes type of averaging and period of average value calculation. Average values are
available on the display of the device and in software.
There are two types of averaging method:
• Static window method cumulates measured values over the dened period. After the period
ends, the average value are calculates and shown. Cumulated values are erased and new
period is measured again.
• Sliding window method continually cumulates measured values over the dened period and
over this period shows calculates average values. While the time is moving, the oldest values
are erased and new values are added.
8.2.9. Energy
It provides setting of recording interval for historical values for energy counters available in EMK-01.
8.3. Communication Settings
The device is equipped by one Ethernet interface 10/100Mbit/s and RS485. All communication
settings are adjusted from Communication section in the software.
8.3.1. Ethernet
It denes the conguration of Ethernet interface of device for visibility and accessibility on LAN
and Internet.
Ethernet
00:30
01.01.2000
192.168.005.006
255.255.252.000
192.168.004.001
192.168.001.201
- >
- >
- >
- >
No
Ethernet
IP
Mask
Gateway
IP - public
Web server
Modbus TCP
FTP - Server
Time synchronization
Send a test e-mail
DHCP server
Yes
Parameter Description Factory setting Setting range
Ethernet Enable or disable Ethernet interface Yes Yes / No
IP EMK-01 IP address in the local network 192.168.001.201
Subnet mask Mask of Ethernet network 255.255.255.0
Gateway IP address of PC or router as a gateway to parent network 192.168.001.001
IP – public Public IP address of router 192.168.001.001
Web server Web server settings advance menu ►
Modbus TCP Modbus TCP settings advance menu ►
FTP server FTP server settings advance menu ►
Time synchronization Time synchronization settings advance menu ►
Send a test e-mail Send a test e-mail
DHCP server Enable or disable DHCP server No Yes / No
Important
Public IP is necessary to set for these cases where the device is accessed from
dierent network, for example Internet, while it is located in Ethernet behind the
NAT server.

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8.3.2. Web Server
Device has built-in web server for remote online monitoring via Internet or local network. Following
the table describes settings related to web server conguration of EMK-01.
Parameter Description Factory setting Setting range
Web server Enable or disable web server Yes Yes / No
Web port Port on which the web server is accessible 80 0 ... 3850
Web name User name for access to EMK-01 device web server admin
Web password Password for access to EMK-01 device web server 1234
Notice
Web server is optimized for portable instruments such as mobile phones and tablets .
İ
8.3.3. Modbus TCP
Communication protocol Modbus TCP is used for communication with EMK-01 over the Ethernet
interface.
Parameter Description Factory setting Setting range
Modbus TCP Enable or disable Modbus TCP feature Yes Yes / No
Modbus TCP - port Port on which the Modbus TCP is accessible 502 1 ... 65535
8.3.4. FTP Server
FTP server is a fundamental communication protocol for reading the measured data, recorded
data and conguration of the device. Enable FTP server is essential setting needed for correct
work of EMK-01 with software.
Parameter Description Factory setting Setting range
FTP server Enable or disable FTP server Yes Yes / No
FTP port Port of FTP service 21 1 ... 65535
FTP name User name for access to EMK-01 device FTP server admin
FTP password Password for access to EMK-01 device FTP server 1234
8.3.5. TCP Converter
EMK-01 is equipped by function of Modbus TCP converter so it can provide access to devices
connected on RS485 bus of EMK-01.
Parameter Description Factory setting Setting range
TCP converter Activates Modbus TCP converter of EMK-01 Yes Yes / No
Converter timeout Converter timeout 500 ms 100 ... 5000 ms
8.3.6. RS485
Serial port RS485 conguration is essential for the usage of EMK-01 as a TCP/IP converter.
Parameter Description Factory setting Setting range
ID Unique identication number in RS485 network 0 0 ... 255
Transfer rate Communication speed of RS485 interface is adjustable in speed 9.6 kBd 9.6 kBd / 19.2 kBd/
38.4 kBd/ 57.6 kBd
115 kBd
Parity RS485 interface parity odd odd / even / none
Stop Bit RS485 interface stop bit 1 1 / 2

16
8.4. Analyser
Settings related to the device itself such as display parameters, colours, time, password protection
and reset of all settings.
Parameter Description Factory setting Setting range
Display refresh Speed of display refreshing. The optimal setting is 5 cycles. 5 cycle 1-5 cycle
Brightness Brightness of display for operation while buttons are touched 90% 0 … 100%
Standby brightness Denes level of brightness when the device is not pressed at any button 45% 0 … 60%
Standby time Time delay after that device turns to standby level of display brightness 10 s 5 - 60
Password Four digit password for access to device settings menu 0000 0 -9999
Date and time Device internal clock conguration sub-menu ►
Colours Colours template of particular voltages and currents of phases for graphs ►
Reset Reset device to the factory settings
8.5. NTP Server / Time Zone
The following date and time settings are adjusted from Date-Time sub-menu in Analyse menu.
Parameter Description Factory setting
Device time Date and UTC time in format for date YYYY.MM.DD and HH:MM for time.
UTC time o󰀨set Time o󰀨set of the local time against to UTC. O󰀨set is set in seconds. 3600 s
Daylight start Beginning of the summer time season ( Date and time format)
Daylight stop End of the summer time season ( Date and time format)
Daylight o󰀨set Time shift for summer time season 3600 s
EMK-01 corrects internal clock according to NTP servers while it is connected to Internet. NTP
time synchronization has always priority above manual clock settings. Clock synchronization by
NTP is fully automatic and there is no need to set anything.
The selection of closest NTP server is adjustable in software. For the nding the closest NTP
server refer to the following link http://support.ntp.org/bin/view/Servers/StratumOneTimeServers
8.6. E-mail
EMK-01 can notice several events and alarms by sending an e-mail up to 4 di󰀨erent e-mail
addresses. The e-mail notication setting is available only from software.
In the software, obtain the SMTP server address from your provider for correct setting. If the
SMTP server requires authentication enter the user name and password.
Select the requested e-mail notication and sending interval. Sending interval denes how often
the e-mail is sent. Factory setting is 1 hour which means that all events and alarms that appear
during the hour are sent in one e-mail. This interval prevents the device to send too many e-mails.
For most recent 5 events and transients, the graphs are sent in the e-mail too. Other events and
transients are shown as a recording in table.

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8.7. Transient
Voltage transients are short commutation, impulse or oscillatory events in electrical grid. Their
source can be inductive load switching, power factor controller, atmospheric events, protection
devices or malfunction of switching elements in the grid.
00:30
01.01.2000
768
768
5s
- >
- >
Pre samples
Post samples
Delay time
Transients of voltage
Transients of current
Transient Setting
EMK-01 quality analyzer detects two types of transients: absolute transient and di󰀨erential transient.
● Absolute transients are detected according to override of dened voltage level. The trigger for
detection of the absolute transients is dened by absolute threshold (percentage of Udin).
● Di󰀨erentialtransientsare detected according to the di󰀨erence between two consecutive
voltage measurement. The di󰀨erence between measurements is dened by di󰀨erential threshold
(percentage of Udin).
Common settings for absolute and di󰀨erential transients are for the parameters used for tuning the
transients’ detection and transient recording.
If the transient is detected and being recorded, the device increases the absolute and di󰀨erential
thresholds to prevent of misled transient detection. It prevents the device against wrong
recordings. This is dened by two user adjustable parameters: increase value and increase time.

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Increase value is the value that is used for increasing the absolute and di󰀨erential threshold while
transient is detected. Set value increases the threshold level for the dened time.
Increase time is a time delay for which the increased value of threshold is valid. After the increase
time expires, the value of threshold is returned back the user set value.
If another transient appears while the increase time is still not expired, the threshold is increased
again. After the increased time expires, the threshold is recovered to the previous level. After
another period of increase time, it is threshold recovered to the user dened level of absolute and
di󰀨erential thresholds.
Parameter Description Factory setting Setting range
Absolute transient Absolute transient activation No Yes / No
Absolute threshold Threshold absolute transient setting 110% 100...500%
Di󰀨erential (Di󰀨erence) transient Di󰀨erential (Di󰀨erence) transient activation No Yes / No
Di󰀨erential (Di󰀨erence) threshold Threshold di󰀨erential (di󰀨erence) transient setting 20% 1 ... 100%
Increase time Time delay before next transient recording after transient start 5 s 1 ... 20 s
Increase value Increment value for transient insensitivity after recording start 10 V 1 ... 750000 V
Post samples Number of recorded samples after the transient start 768 0 ... 8000
Pre samples Number of recorded samples before the transient start 768 0 ... 8000
Memory space for capturing of the particular transients is xed on the maximum 8000 samples.
Denition of number pre and post samples is limited by this maximum samples memory space.
8.8. Events
The events captured by EMK-01 can be adjusted with the parameters given in the table below.
Parameter Description Factory setting Setting range
Reference Reference voltage level type Udin Udin / Sliding
Pre samples Number of recorded half periods Urms1/2 (10 ms = 1) before event 10 0 ... 4000
Post samples Number of recorded half periods Urms1/2 (10 ms = 1) after event 150 0 ... 4000
Voltage swell
(Over voltage) ►
Threshold 110% 100 ... 500%
Hysteresis 5% 1 ... 20%
Voltage dip
(Under voltage) ►
Threshold 90% 1 ... 100%
Hysteresis 5% 1 ... 20%
Interruption
Threshold 5% 1 ... 100%
Hysteresis 2% 1 ... 20%
Over current
Threshold 110% 100 ... 500%
Hysteresis 5% 1 ... 20%

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Memory for capturing the samples of RMS curves is xed on the maximum 4000 samples.
Denition of number pre and post samples is limited by this maximum samples memory space.
8.8.1. Voltage Dip
The dip threshold is a percentage of either Udin or the sliding voltage reference. The user should
declare the reference voltage in use.
In single phase systems, a voltage dip begins when Urms voltage falls below the dip threshold,
and ends when Urms voltage is equal to or above the dip threshold plus the hysteresis voltage.
In poly-phase systems, a voltage dip begins when Urms voltage of one or more channel is below
the dip threshold, and ends when Urms voltage on all measurement channels is equal to or above
the dip threshold plus the hysteresis voltage.
The dip threshold and the hysteresis voltage are both set by the user according to the use.
8.8.2. Voltage Swell
The swell threshold is a percentage of either Udin or the sliding voltage reference. The user
should declare the reference voltage in use.
In single phase systems, a voltage swell begins when Urms voltage rises above the swell
threshold, and ends when Urms voltage is equal to or below the swell threshold minus the
hysteresis voltage.
In poly-phase systems, a voltage swell begins when Urms voltage of one or more channel is
above the swell threshold, and ends when Urms voltage on all measurement channels is equal to
or below the swell threshold minus the hysteresis voltage.
The swell threshold and the hysteresis voltage are both set by the user according to the use
8.8.3. Rapid Voltage Change (RVC)
A rapid voltage change (RVC) is an event characterized by a quick transition from one steady
state voltage to another. Typically, RVC events are counted for a period of one hour or for each
day. Mains signaling voltage, called ripple control signal in a certain applications, is a burst of
signals, often applied a non-harmonic frequency, that remotely control industrial equipment,
revenue meter and other devices.
If the change in voltage is su󰀩cient to cross the dip threshold or swell threshold, then the event is
not recorded as an RVC event. It is a dip or a swell.
The RVC threshold and the RVC hysteresis are both set by the user according to the use. The
RVC threshold is a percentage of Udin. The RVC hysteresis is a smaller percentage of Udin
.
Notice
Although RVC and icker both may cause changes in illumination levels that irritate people, the two
are dierent in concept. RVC is a discrete event while icker is a quasi-stationary condition.
İ
Parameter Description Factory setting Setting range
RVC threshold RVC threshold is a percentage of Udin 3.3% 1 ... 100%
RVC hysteresis RVC hysteresis is a smaller percentage of Udin 1% 1 ... 20%
According to the norm, the ideal settings are RVC threshold on 3.5% of Udin and hysteresis on 1% of Udin

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8.9. Inputs / Outputs
EMK-01 quality analyzer has two user congurable inputs / outputs. Connection of the inputs /
outputs is displayed in the chapter 7.9.
The following input / output settings are congured through the software.
Parameter Description Factory
setting
Setting range
Channel type Denes the usage of the input and output interface Digi in Digi in / Digi out / Pulse in
/ Pulse out / Alarm
Source of
pulses Setting available only for Pulse out channel type
Pulse weight Setting available only for Pulse out and Pulse in channel type 0
Unit Setting available only for Pulse in channel type. Denes the unit of pulses.
Digi out Available only for Digi out channel type. Denes fundamental state of output. O󰀨
8.10. Alarms
The device is equipped by two input / output terminals which can be programmed to the four
di󰀨erent states. Terminal one or two can be set to work as an alarm output.
Each output, while it is set to behave as an alarm, consists from three comparators. Comparators
are sorted into logical function according to following diagram.