Iskra SR100 User manual

Supervision Relay SR100
March 2019 • Version 5.00

This manual was produced using ComponentOne Doc-To-Help.™

TABLE OF CONTENT
Supervision Relay –SR100 - User’s Manual
I
Table of content
SUPERVISION RELAY SR100.............................................................................................................................. 1
SECURITY ADVICE AND WARNINGS.................................................................................................................. 2
WARNINGS, INFORMATION AND NOTES REGARDING DESIGNATION OF PRODUCT......................................... 3
BEFORE SWITCHING THE DEVICE ON................................................................................................................ 4
HEALTH AND SAFETY ....................................................................................................................................... 5
DISPOSAL......................................................................................................................................................... 6
BASIC DESCRIPTION AND OPERATION ............................................................................................................. 7
CONTENTS ...........................................................................................................................................................7
DESCRIPTION OF THE SUPERVISION RELAY SR100 ..............................................................................................8
ABBREVIATION/GLOSSARY ..................................................................................................................................9
PURPOSE AND USE OF SUPERVISION RELAY SR100 .......................................................................................... 10
CONNECTION..................................................................................................................................................11
MOUNTING........................................................................................................................................................12
ELECTRICAL CONNECTION FOR SUPERVISION RELAY SR100 .............................................................................12
CONNECTION OF INPUT/OUTPUT MODULES....................................................................................................14
COMMUNICATION CONNECTION......................................................................................................................15
RS232.............................................................................................................................................................15
RS485.............................................................................................................................................................15
CAN (CANopen) ............................................................................................................................................. 15
Service USB....................................................................................................................................................16
SURVEY OF COMMUNICATION CONNECTION................................................................................................... 16
CONNECTION OF AUX. POWER SUPPLY ............................................................................................................ 17
SETTINGS ........................................................................................................................................................18
MIQEN SOFTWARE ............................................................................................................................................18
Devices management ....................................................................................................................................19
Settings..........................................................................................................................................................21
Measurements .............................................................................................................................................. 22
My Devices .................................................................................................................................................... 24
Upgrade.........................................................................................................................................................24
Software upgrading.......................................................................................................................................24

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Supervision Relay –SR100 - User’s Manual
Setting procedure ..........................................................................................................................................24
GENERAL SETTINGS............................................................................................................................................25
Connection.....................................................................................................................................................27
Communication .............................................................................................................................................27
Security ..........................................................................................................................................................31
ENERGY ..............................................................................................................................................................32
Counters ........................................................................................................................................................32
INPUTS AND OUTPUTS.......................................................................................................................................34
Start-up delay for outputs (s) ........................................................................................................................34
Enabled protection groups ............................................................................................................................35
Output signal .................................................................................................................................................35
PROTECTION FUNCTIONS ..................................................................................................................................36
Overcurrent protection function (Over Current 1 & 2) ANSI# 50 (>I, >>I).....................................................37
Overcurrent protection function (Over Current IE 1 & 2) ANSI# 50 N/G (>IE) ..............................................38
Overcurrent protection function (Over Current Idiff 1 & 2) ANSI# 87 (>I’) ...................................................39
Overvoltage protection functions (Over Voltage 1 & 2) ANSI# 59 (>U, >>U) ................................................40
Undervoltage protection functions (Under Voltage 1 & 2) ANSI# 27 (<U, <<U)............................................41
Overfrequency protection functions (Over Frequency 1 & 2) ANSI# 81O (>f, >>f) .......................................42
Underfrequency protection functions (Under Frequency 1 & 2) ANSI# 81U (<f, <<f)...................................43
Asymmetry protection functions: Voltage Unbalances ANSI# 47 (>UUn).......................................................44
Asymmetry protection functions: Phase Imbalance 1&2 ANSI# 46 (>Iim, >>Iim) ............................................45
Load protection functions: Directional power 1&2 ANSI# 32 (>P, >>P) ........................................................46
Load protection functions: Power underrun 1&2 ANSI# 32R/U (<P, <<P).....................................................47
LoM (Loss of Mains) protection functions: Phase Shift ANSI# 78(> dPhi/dt) ................................................48
LoM (Loss of Mains) protection functions: ROCOF protection ANSI# 81R(> df/dt).......................................49
Protection Functions in MiQEN - Setting and Acquisition Software..............................................................50
RESET .................................................................................................................................................................55
MEASUREMENTS ............................................................................................................................................56
ONLINE MEASUREMENTS ..................................................................................................................................56
AVAILABLE CONNECTIONS.................................................................................................................................57
SUPPORTED MEASUREMENTS...........................................................................................................................58
SELECTION OF AVAILABLE QUANTITIES .............................................................................................................58
EXPLANATION OF BASIC CONCEPTS ..................................................................................................................60
Sample factor MV...........................................................................................................................................60
Average interval MP ......................................................................................................................................60
Power and energy flow..................................................................................................................................60
CALCULATION AND DISPLAY OF MEASUREMENTS............................................................................................61

TABLE OF CONTENT
Supervision Relay –SR100 - User’s Manual
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PRESENT VALUES ............................................................................................................................................... 61
Voltage ..........................................................................................................................................................62
Current ..........................................................................................................................................................62
Active, reactive and apparent power ............................................................................................................62
Power factor and power angle ......................................................................................................................62
Frequency......................................................................................................................................................63
Energy counters.............................................................................................................................................63
THD − Total harmonic distortion ...................................................................................................................63
Average interval for min. max. values ...........................................................................................................63
TECHNICAL DATA ............................................................................................................................................64
ACCURACY ......................................................................................................................................................... 64
MEASUREMENT INPUTS .................................................................................................................................... 64
CONNECTION.....................................................................................................................................................65
Connection table ...........................................................................................................................................66
COMMUNICATION.............................................................................................................................................66
I/O MODULES .................................................................................................................................................... 67
SAFETY ............................................................................................................................................................... 67
MECHANICAL.....................................................................................................................................................67
ENVIRONMENTAL CONDITIONS ........................................................................................................................68
DIMENSIONAL DRAWING ..................................................................................................................................68
APPENDICES....................................................................................................................................................69
APPENDIX A ....................................................................................................................................................... 69
APPENDIX B ....................................................................................................................................................... 79
APPENDIX C ....................................................................................................................................................... 86

SUPERVISION RELAY SR100
Supervision Relay –SR100 - User’s Manual
1
SUPERVISION RELAY SR100

Security advice and warnings
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Supervision Relay –SR100 - User’s Manual
SECURITY ADVICE AND WARNINGS
Please read this chapter carefully and examine the equipment carefully for potential damages which might arise
during transport and to become familiar with it before continue to install, energize and work with a measuring
instrument.
This chapter deals with important information and warnings that should be considered for safe installation and
handling with a device in order to assure its correct use and continuous operation.
Everyone using the product should become familiar with the contents of chapter »Security Advices and
Warnings«.
If equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment
may be impaired.
PLEASE NOTE
Installation and use of devices includes work with dangerous currents and voltages, therefore such work shall be
carried out by qualified persons only. The ISKRA Company assumes no responsibility in connection with
installation and use of the product. If there is any doubt, regarding installation and use of the system in which
the instrument is used for measuring or protection, please contact a person who is responsible for installation of
such system.

WARNINGS, INFORMATION AND NOTES REGARDING DESIGNATION OF PRODUCT
Supervision Relay –SR100 - User’s Manual
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WARNINGS, INFORMATION AND
NOTES REGARDING DESIGNATION
OF PRODUCT
Used symbols:

See product documentation.

Double insulation in compliance with the EN 61010−1 standard.

Functional ground potential.
Note: This symbol is also used for marking a terminal for protective ground
potential if it is used as a part of connection terminal or auxiliary supply terminals.

Compliance of the product with directive 2002/96/EC, as first priority, the
prevention of waste electrical and electronic equipment (WEEE), and in addition,
the reuse, recycling and other forms of recovery of such wastes so as to reduce
the disposal of waste. It also seeks to improve the environmental performance of
all operators involved in the life cycle of electrical and electronic equipment.

Compliance of the product with European CE directives.

BEFORE SWITCHING THE DEVICE ON
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Supervision Relay –SR100 - User’s Manual
BEFORE SWITCHING THE DEVICE ON
Check the following before switching on the device:
nominal voltage,
supply voltage,
nominal frequency,
voltage ratio and phase sequence,
current transformer ratio and terminals integrity,
protection fuse for voltage inputs (recommended maximal external fuse size is 6 A),
external switch or circuit-breaker must be included in the installation for disconnection of the devices’
aux. power supply. It must be suitably located and properly marked for reliable disconnection of the
device when needed,
integrity of earth terminal,
proper connection and voltage level of I/O modules.
WARNING
A current transformer secondary should be short circuited before connecting the device.

HEALTH AND SAFETY
Supervision Relay –SR100 - User’s Manual
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HEALTH AND SAFETY
The purpose of this chapter is to provide a user with information on safe installation and handling with the
product in order to assure its correct use and continuous operation.
We expect that everyone using the product will be familiar with the contents of chapter »Security Advices and
Warnings«.
If equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment
may be impaired.

DISPOSAL
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Supervision Relay –SR100 - User’s Manual
DISPOSAL
It is strongly recommended that electrical and electronic equipment is not deposit as municipal waste. The
manufacturer or provider shall take waste electrical and electronic equipment free of charge. The complete
procedure after lifetime should comply with the Directive 2002/96/EC about restriction on the use of certain
hazardous substances in electrical and electronic equipment.

BASIC DESCRIPTION AND OPERATION
Supervision Relay –SR100 - User’s Manual
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BASIC DESCRIPTION AND
OPERATION
This chapter presents all relevant information about the instrument required to understand its purpose,
applicability and basic features related to its operation.
Apart from this, it also contains navigational tips, description of used symbols and other useful information for
understandable navigation through this manual.
Regarding the options of this instrument, different chapters should be considered since a particular sub variant
might vary in functionality. More detailed description of device functions is given in chapters Main Features,
Supported options and Functionality.
Supervision Relay SR100 is available in DIN rail mounting enclosure. Specifications of housing are specified in
chapter Connection –Mounting on page 12.
Contents
Packaging contains the following items:
Measuring instrument
Quick Guide
All related documentation on this product can be found at Iskra web page - https://www.iskra.eu. The instrument
desktop based setting software –MiQen2, together with accompanying drivers can be found on Iskra web page
- https://www.iskra.eu. Due to environmental reasons, all this information is longer provided on a separate CD.
CAUTION
Please examine the equipment carefully for potential damage, which might have occurred during transport.

BASIC DESCRIPTION AND OPERATION
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Supervision Relay –SR100 - User’s Manual
Description of the Supervision Relay SR100
Supervision Relay SR100 is intended for measuring and monitoring single-phase or three-phase electrical power
network. It measures RMS network values and all significant deviations from the nominal values by means of fast
sampling of voltage and current signals. There is an option in MiQen Settings Studio software to select also the
measurements based only on positive sequence fundamental wave, which does not include harmonics
measurements. This option can be found under MiQen Settings menu. With this option included, all
corresponding values are replaced by IEC 61400-21 Annex C measurements. This makes Supervision Relay SR100
suitable for acquisition and validation of fast changes in the network. A built-in microcontroller calculates
measured values (voltage, current, frequency, energy, power, power factor, THD phase angles and deviations)
and sends these data over a reliable CANopen communication interface to the CAN master devices.
Lack of information regarding supplied voltage quality can lead to unexplained production problems and
malfunction or can even damage equipment being used during factory production process. Therefore
Supervision Relay SR100 can be used to detect predefined faults. With measuring 13 different network
deviations, Supervision Relay SR100 could be used as simple but efficient supervision relay. Supervision Relay
SR100 is delivered un-configured for customer configuration with user friendly setting software MiQEN.
Supervision Relay SR100 supports standard serial communication RS232/RS485 with speed up to 115200 baud
and CANopen communication for speeds up to 1 Mbit/s which is perfect for integration into large systems.
Additional USB 2.0 interface can only be used for a fast set-up without the need for auxiliary power supply. This
interface is provided with only BASIC insulation and can be used ONLY unconnected to power inputs.
Appearance
1 –Communication ports
2 –I/O modules
3 –Auxiliary supply
4 –Voltage inputs
5 –Current inputs
6 –Power ON LED
Communication ports and LED indicators
Serial communication can be connected by using screw-in connector (RS232 or RS485). CANopen communication
is also connected using screw-in connector. USB can be connected through USB-mini type connector at the
bottom of Supervision Relay SR100.
LED indicator is intended for POWER ON signaling (red LED).

BASIC DESCRIPTION AND OPERATION
Supervision Relay –SR100 - User’s Manual
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WARNING
USB communication port is provided with only BASIC insulation and can ONLY be used unconnected to aux.
supply AND power inputs!
I/O modules
Four I/O module slots are intended for electromechanical relay output modules.
Universal auxiliary supply
Auxiliary supply is connected by two screw-in connectors. For safety purposes it is important that all wires are
firmly fastened. Auxiliary supply is wide range (20 … 300 V DC; 48 … 276 V AC).
Voltage inputs
Each voltage input is connected to measuring circuit through input resistor chain (3.3 MΩper phase). Maximum
value of input voltage is 600 VL-N (1000 VL-L).
Current inputs
Each current input is connected to measuring circuit through current transformer (0.01 Ω per phase). Maximum
allowed thermal value of input current is 12.5 A (cont.).
Abbreviation/Glossary
Abbreviations are explained within the text where they appear the first time. Most common abbreviations and
expressions are explained in the following table:
Term
Explanation
RMS
Root Mean Square value
MODBUS / DNP3
Industrial protocol for data transmission
MiQen
Setting Software for ISKRA instruments
AC
Alternating voltage
PA total
Power Angle calculated from total active and apparent power
PAphase
Angle between fundamental phase voltage and phase current
PFphase
Power factor, calculated from apparent and active power (affected by harmonics)
THD (U, I)
Total harmonic distortion
MD
Max. Demand; Measurement of average values in time interval
FFT graphs
Graphical display of presence of harmonics
Harmonic voltage −
harmonic
Sine voltage with frequency equal to integer multiple of basic frequency
Sample factor
Defines a number of periods for measuring calculation on the basis of measured
frequency
Mp− Average interval
Defines frequency of refreshing displayed measurements
Hysteresis [%]
Percentage specifies increase or decrease of a measurement from a certain limit
after exceeding it.
RO
Relay output module
List of common abbreviations and expressions

BASIC DESCRIPTION AND OPERATION
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Supervision Relay –SR100 - User’s Manual
Purpose and use of Supervision Relay SR100
Supervision Relay SR100 is used for measuring and monitoring single-phase or three-phase values and detecting
predefined faults. With measuring 13 different network deviations, Supervision Relay SR100 can be used as
simple but efficient supervision relay. Supervision Relay SR100 is delivered un-configured for customer
configuration with user friendly setting software MiQEN. Supervision Relay SR100 supports standard serial
communication RS232/RS485 with speed up to 115200 baud and CANopen communication for speeds up to 1
Mbit/s which is perfect for integration into large systems.
Additional USB 2.0 interface can only be used for a fast set-up without the need for auxiliary power supply. This
interface is provided with only BASIC insulation and can be used ONLY unconnected to power inputs.
Supported measurements
Basic measurements
Phase
Voltage U1, U2, U3and U~
Current I1, I2, I3, In, Itand Ia
Active power P1, P2, P3, and Pt
Reactive power Q1, Q2, Q3, and Qt
Apparent power S1, S2, S3, and St
Power factor PF1, PF2, PF3and PF~
Power angle φ1, φ2, φ3and φ~
THD of phase voltage Uf1, Uf2 and Uf3
THD of power angle I1, I2and I3
Phase Shift L1\L2\L3
Phase-to-phase
Phase-to-phase voltage U12, U23, U31
Average phase-to-phase voltage Uff
Phase-to-phase angle φ12, φ23, φ31
THD of phase−to−phase voltage
Energy
Counter 1
Counter 2
Counter 3
Counter 4
Active tariff
Inputs and outputs
Relay output 1
Relay output 2
Relay output 3
Relay output 4
Other measurements
MD values
Phase current I1, I2, I3
Active Power Total (Pt) - (positive)
Active Power Total (Pt) - (negative)
Reactive Power Total (Qt) - L
Reactive Power Total (Qt) - C
Apparent Power Total (St)
Measurements
Voltage Unbalances Uo
Phase imbalance
Frequency
ROCOF df/dt
Internal temperature

CONNECTION
Supervision Relay –SR100 - User’s Manual
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CONNECTION
This chapter deals with the instructions for measuring instrument connection. Both the use and connection of
the device includes handling with dangerous currents and voltages. Only qualified personnel using an appropriate
equipment shall therefore perform connections. ISKRA d.d. does not take any responsibility regarding the use
and connection. If any doubt occurs regarding connection and use in the system which device is intended for,
please contact a person who is responsible for such installations.
A person qualified for installation and connection of a device should be familiar with all necessary precaution
measures described in this document prior to its connection.
Before use please check the following:
Nominal voltage (UP-Pmax = 1000VACrms; UP-Nmax = 600VACrms),
Supply voltage (rated value),
Nominal frequency,
Voltage ratio and phase sequence,
Current transformer ratio and terminals integrity,
Protection fuse for voltage inputs (recommended maximal external fuse size is 6 A)
External switch or circuit-breaker must be included in the installation for disconnection of the devices’
aux. power supply. It must be suitably located and properly marked for reliable disconnection of the
device when needed. See CAUTION below.
Integrity of earth terminal
Proper connection and voltage level of I/O modules
WARNING
Wrong or incomplete connection of voltage or other terminals can cause non-operation or damage to the device.
CAUTION
Aux. Supply inrush current can be as high as 20A for short period of time (<1 ms). Please choose an appropriate
MCB for disconnection of aux. supply.
PLEASE NOTE
After connection, settings have to be performed via communication using MiQen software.

CONNECTION
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Supervision Relay –SR100 - User’s Manual
Mounting
Supervision Relay SR100 is designed for DIN rail mounting. It should be mounted on a 35 mm DIN rail by means
of two plastic fasteners. Before installation fasteners should be in open position (pulled). After device is in place,
fasteners are locked (pushed) to close position.
Dimensional drawing
Electrical connection for Supervision Relay SR100
Voltage inputs of a device can be connected directly to low-voltage network or via a voltage measuring
transformer to a high-voltage network.
Current inputs of measuring transducer can be connected directly to low-voltage network or via a corresponding
current transformer.
Choose corresponding connection from the figures below and connect corresponding voltages and currents.
Information on electrical consumption of current and voltage inputs is given in a chapter Technical Data –
Measuring inputs on page 64.
CAUTION
For accurate operation and to avoid measuring signal crosstalk it is important to avoid installation of voltage
measuring wires close to current measuring transformers.
PLEASE NOTE
For proper connection wire diameters and other wiring requirements see chapter Technical data –Connection
on page 65.
System/ connection
Terminal assignment
Connection 1b (1W)
Single phase connection

CONNECTION
Supervision Relay –SR100 - User’s Manual
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System/ connection
Terminal assignment
Connection 3b (1W3)
Three phase, three wire connection
with balanced load
Connection 3u (2W3)
Three phase, three wire connection
with unbalanced load
Direct connection 3u(2W3)
Three phase, three wire direct connection
with unbalanced load
Connection 4b (1W4)
Three phase, four wire connection
with balanced load
Connection 4u (3W4)
Three phase, four wire connection
with unbalanced load

CONNECTION
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Supervision Relay –SR100 - User’s Manual
System/ connection
Terminal assignment
Connection Idiff
Three phase, four wire connection
with unbalanced load
Connection IE
Three phase, four wire connection
with unbalanced load
Connection of input/output modules
WARNING
Check the module features that are specified on the label, before connecting module contacts. Wrong
connection can cause damage or destruction of module and/or device.
Connect module contacts as specified on the label. Examples of labels are given below and describe modules
built in the device. Information on electrical properties of modules is given in a chapter Technical Data –I/O
modules on page 67.
I/O module 1
Electromechanical relay output module. (Example of alarm module as I/O module 1)