857 motor protection relay

Copyright © 2009 Rockwell Automation, Inc. All rights reserved.
(Confidential – For Internal Use Only)
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1
857 Motor Protection Relay
2013 CSM Training
School
MV Starter/SMC Flex

Motor protection v1.6JAK (Confidential – For Internal Training Use Only) Copyright © 2013 Rockwell Automation, Inc. All rights reserved. Ver. 1.3.2
2
Bulletin 857 – Key Features
• High Performance Protection, measurement, control, condition monitoring
and power quality functions
• Programmable logic
• Configurable mimic (single line diagram)
• Local and remote communication
• Fully Configurable
• Integrated arc protection (Optional)
• Integrated power quality
• Accurate fault location
• Circuit Breaker control
• Motor OR Feeder applications

3
Bulletin 857 – Type Tested
• KEMA protection functions tests
• SGS FIMKO EMC and environmental tests
• Lloyd’s certificate
• GOST
• BV
• GL
• ABS
• UL Listed
• CE marked
In progress
• DNV

4
Allen-Bradley 857
Solutions for Today’s Protection Requirements
Current Protection Functions
• Inrush Protection [68]
• Instantaneous Overcurrent [50]
• Overcurrent [51]
• IDMT Overcurrent [51]
• Instantaneous Ground Fault [50N]
• Ground Fault [51N]
• IDMT Ground Fault [51N]
• Directional Overcurrent [67]
• Directional Ground Fault [67N]
• Reverse Power [32]
Voltage Protection Functions
• Undervoltage [27]
• Overvoltage [59]
• Residual Overvoltage [59N]
• Frequency [81]
• Rate of Frequency Change [81R]
• Synchro-check [25]

5
Allen-Bradley 857
Solutions for Today’s Protection Requirements
Motor Protection Functions
• Start Protection [51]
• Blocked Rotor [51LR]
• Stall Protection [48]
• Number of Starts [66]
• Phase Sequence [47]
• Unbalanced [46]
• Undercurrent [37]
• Thermal Overload [49]
Other Protection Functions
• Total Harmonic Distortion [THD]
• Auto-Reclosing [79]
• Power Factor Control [55]
• Distance Protection [21]
• Breaker Failure [50BF]
• Arc Protection [50AR]
• Block/Lockout [86]
• Fault Recording [FR]
• Disturbance Recorder [DR]

Motor protection v1.6
857 Operation Indicators
• The relay is provided with
eight LED indicators:
6

7
Bulletin 857 – Metering Capabilities
•Very accurate measurements
•Calibrated for Fundamental and up the
15th harmonic
•Accuracies to :
•Currents 0.3 %
•Voltages 0.3%
•Power 1.0 %
•Most inaccuracy
comes from current and voltage’s
transformers (protection winding)

8
Bulletin 857 – Metering Capabilities
•Summations and Averages for all power elements
•Monthy Statistics
•Averages

9
Bulletin 857 – Power Quality
Harmonics
•Both currents and voltages
•THD (Total Harmonic distortion)
•Calculates and displays odd units up to 15th
Voltage quality
•Sags ,swells and Interruptions
– duration and time stamps
– type (phase information)
– Max, min, average values

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Hardware
10
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11
Bulletin 857 – I/O Variants
Bulletin 857 3C8 XXXBulletin 857 3C7 XXX
Total DI/DO
• 20 digital inputs
• 20 output relays
Total DI/DO
I/O card: 8 DI, 4 DO I/O card: 10 DO
Bulletin 857 3C6XXX
Total DI/DO
I/O card: none
Standard Configuration

Rear Panel View
• AB 857 is connected to the protected object through the following measuring and control connections:
12

Connections
13

Connections
(cont.)
14
• The external auxiliary
voltage Uaux (standard
40…265 V ac or dc) for the
terminal is connected to the
terminals X3: 17 & 18
• NOTE: Polarity of the
auxiliary voltage Uaux (24 V
dc, option B): pin 17 (-ve)
and pin 18 (+ve)

Connections
(cont.)
15

16
Trip Output Relays (4)
• T1-T4 – Form A
• Each selectable N.C. or N.O
• Rated voltage 250 V AC/DC
• Continuous carry: 5 A
• Make and Carry, 0.5 s - 30 A
• Make and Carry, 3s - 15 A
• Breaking capacity, DC (L/R=40ms)
• at 48 V dc: 5 A
• at 110 V dc: 3 A
• at 220 V dc: 1 A
Bulletin 857 – Trip Relay Outputs
High current AC & DC ratings for circuit
breaker shunt controls

17
Alarm (Signal) Output Relays (5)
• A1 – Form C
• A2-A5 – Form A
• Each selectable N.C. or N.O
• Max. make current:15 A
• Breaking capacity: 2,000 VA (AC)
• at 48 V dc: 1.3 A
• at 110 V dc: 0.4 A
• at 220 V dc: 0.2 A
Bulletin 857 – Alarm Relay Outputs

18
Bulletin 857 – Watchdog Relay Output
Internal Fault (Signal) Output Relay (1)
• IF – Form C
• Max. make current:15 A
• Breaking capacity: 2,000 VA (AC)
• at 48 V dc: 1.3 A
• at 110 V dc: 0.4 A
• at 220 V dc: 0.2 A
The IF relay is de-energized when the internal
watchdog system detects a fault OR the auxiliary
supply is lost
It is energized when the auxiliary supply is within
tolerance and there are no internal faults detected

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Digital Inputs 7 thru 18
• Number of inputs: 12
• Externally Wetted
(A voltage must be applied from the control
circuit)
• External operating voltage must be
18 - 265 V AC or DC
• AC or DC Coupling selected in
SetPointPS
• Current drain: 2 mA
Bulletin 857 – Digital Inputs, Wetted Externally

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External wetting voltage 18 – 265V
AC or DC*
Bulletin 857 –Digital Inputs, Wetted Externally
Dry contacts from
the control circuit,
contactor or breaker
DI7
DI11
* - Select Coupling mode in
SetPointPS

21
Digital Inputs 1 thru 6
• Internally Wetted @ 48VDC
(Source voltage for contacts is an isolated 48V
supply generated by the relay)
• Current drain when active (max.): 2 mA
• Current drain, average value < 1 mA
Bulletin 857 – Digital Inputs, Wetted Internally

22
Digital Inputs
• Internally Wetted @ 48VDC- source
voltage for contacts is an isolated 48V
supply generated by the relay
• Current drain when active (max.): 2 mA
• Current drain, average value < 1 mA

23
Dry contact from the
control circuit,
contactor or breaker
DI1 48V DC
Fully Isolated from any other control circuit
DI6

24
Bulletin 857 – Communication Options

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Allen-Bradley 857- Optional Communication
Protocols
Meeting the needs of a global marketplace…….
• Ethernet
• Modbus TCP
• Modbus RTU
• Ethernet I/P
• Profibus DP
• IEC 61850
• SPA-Bus
• DNP 3.0
• DeviceNet – Under Development
Available
Now

26
857-RAA 12 Channel RTD Scanner
• 12 Independent channels for
any combinations,
– 100 Ω platinum
– 100 Ω nickel
– 120 Ω nickel
– 10 Ω copper
• Configurable For Bearing,
Winding, Ambient or Other
• Connects to main relay via
single fiber optic connection
• Requires VCM RTD I/F in relay
• 62.5 M fiber cable (same as 825P)
• Up to 1000 meters from relay
DIN Rail Mounting
Panel Mounting

857-RAA 12 Channel RTD Scanner-
VCM RTD Interface
JAK (Confidential – For Internal Training Use Only) Copyright © 2013 Rockwell Automation, Inc. All rights reserved. Ver. 1.3.2
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•Single Fiber Connection (VCM RTD)
Bulletin 857-3C6ANL

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857-RAD 12 Channel Enhanced RTD Scanner
RTD Scanner c/w four 0-20mA outputs
• DUAL fiber optic connection
Via VCM FIBER I/F
• Up to 1000 meters from relay
• 12 RTD channels (as RAA)
• Four 0-20mA Outputs
• Four 0-20mA Inputs
• Fully programmable scaling

857-RAD 12 Channel RTD Scanner-
VCM FIBER Interface
JAK (Confidential – For Internal Training Use Only) Copyright © 2013 Rockwell Automation, Inc. All rights reserved. Ver. 1.3.2
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•Dual Fiber Connection (VCM FIBER GG)
Bulletin 857-3C6AEL

Motor protection v1.6(Confidential – For Internal Use Only) Copyright © 2013 Rockwell Automation, Inc. All rights reserved.
30
Bulletin 857 Communication Option Modules
ProfiBus
• Requires RS232/TTL Interface in the relay – 857-3C6?A?
• 857-VPA3CG External module and 857-VX007 Cable
Bulletin 857-3C6AAL
857-VX007-F3
Cable
857-VPA3CG
External Module
RS232 or Enet or single
fiber (for 857-RAA)

Motor protection v1.6(Confidential – For Internal Use Only) Copyright © 2013 Rockwell Automation, Inc. All rights reserved.
31
Bulletin 857 Communication Option Modules
ProfiBus + Dual fiber interface (857-RAD enhanced RTD Scanner)
• Requires compact RS232/TTL Interface in the relay – 857-3C6?EC
• 857-VPA3CG External module and 857-VX049 Cable
Bulletin 857-3C6AEC
857-VPA3CG
External Module

32
Bulletin 857–3C6 (Standard Configuration)
• Three phase currents and two independent
residual current inputs
• Three phase-to-earth voltages or two phase-to-
phase voltages and residual voltage
• 12 digital input, 6 digital inputs, 48V wetting
voltage
• 4 power outputs
• 5 signal outputs + self supervision output
• Local communication port, Front/Rear
• Remote communication port, TTL, RS232,
RS485, Profibus, plastic or glass optic , TCP/IP
as option, Extension port TCP/IP
• One watch dog output
2+Arc
Sensor
1-Arc
Sensor
1-Arc
Sensor
2-Arc
Sensor
Com.B
Light
BLight
In
BLight
Out
1+Arc
Sensor
Int.Fault
T1T2A1
48VDigitalInputs-WettedDigitalInputs13-18DigitalInputs7-12

33
• Three phase currents and two independent residual current inputs
• Three phase-to-earth voltages or two phase-to-phase voltages and
residual voltage
•20 digital input + 6 digital inputs, 48V wetting voltage
• 8 power outputs
• 5 signal outputs + self supervision output
• Remote communication port, TTL, RS232, RS485, Profibus, plastic or
glass optic , TCP/IP as option, Extension port TCP/IP
• Two ARC sensor inputs as option, binary input and output for light
Bulletin 857 – Connections 3C7

34
Bulletin 857–3C8
• Three phase currents and two independent residual current inputs
• Three phase-to-earth voltages or two phase-to-phase voltages and
residual voltage
• 12 digital input + 6 digital 48V wetting voltage inputs
• 14 power outputs
• signal outputs + self supervision output
• Remote communication port, TTL, RS232, RS485, Profibus, plastic or
glass optic , TCP/IP as option, Extension port TCP/IP
• Two ARC sensor inputs as option, binary input and output for light

35
Allen-Bradley 857 -Arc Protection
• Integrated Arc Flash Protection
• Protection for the equipment
• Limit damage in the case of an arc fault
• Multiple sensors available (2-per relay)
Point
Sensor

36
Allen-Bradley 857 -Arc Protection
• Protection for the equipment and
Protection for personnel working in and
around electrical equipment
Personal Sensor

37
Bulletin 857 – Smoke sensors
Smoke sensors can be connected to the same channel as an arc sensor

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SetPointPS Software
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SetPointPS and Local HMI of 857/865
• General about SetPointPS
– Always make sure that you are using the latest version of the setting tool.
– The latest version of setting tool is normally sent to Rockwell when a new version of
firmware (IED) is released.
– SetPointPS does not require separate installation. Copy/paste the folder to your
desired location and run SetPointPS.exe to start using the tool.
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Password
• Enabling password by using local HMI of IED
– Password has to be enabled whenever settings are changed by using configuration
tool or local HMI.
– To enable password when local HMI is used:
1. Press “info” key of the IED.
2. Depending on top of which window the info key is pressed a type of menu will
be opened. To set password press enter. To have access to all settings
password has to be 0002. Go right to last digit and set the value to 2, then
press enter. Now you may use the IED as a operator.
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Establishing Connection
• Establishing connection between setting tool and IED
– Make sure that communication speed is same in the IED and setting tool.
1. IED local port communication speed can be found from configuration (CONF)
-menu. Press “enter” key to enter the menu and do it again to set the speed.
2. When SetPointPS is used go to Settings and select Communication Settings.
Check that correct communication port and speed is being used.
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Establishing Connection (cont.)
• Establishing connection between setting tool and IED
– Make sure that communication speed is same in the IED and the setting tool.
3. Go to communication -menu and select “Read all settings from the device”.
4. Type password “2” and press ok, now all the setting will be read from the IED.
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SetPointPS Screen Buttons
• Few things about SetPointPS
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B C D F GEA H I J K
A) Connect/Disconnect with the IED. Case of plank SetPointPS, all setting will be read from
the relay when pressed.
B) Enable/Disable automatic update (measurements etc.).
C) Write all setting to device.
D) Write current view to device.
E) Write all changes to device.
F) Read/refresh current view from device.
G) Read all settings from device (same as “A” when plank SetPointPS).
H) When Boot -sign is lit the device needs to be restarted. This button restarts the IED.
I) Synchronize time and date with your computer.
J) Access to fault recorder view.
K) Clears all connections from output/block –matrix.

Making Changes
• Making changes to an IED
– While staying connected to an IED and some changes are made. The changes will
not be sent to the IED unless following actions are made.
1. “Write current view to the device” –button is pressed.
2. “Write changes to device” –button is pressed.
3. Settings will be set to IED in real time when “Write changes automatically
after change” has been enabled in Settings –menu Program Settings…
NOTE! Changes to Matrixes and Logic will not go to the relay automatically!!
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2.
1.
3.

Offline Configuration
• Offline configuration
– It is possible to handle a whole project offline. When project is opened and devices
are created the modification on unit basis can be done offline.
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B
A) Open available device from the project (Device Library).
B) Make desired changes for the unit.
C) Save the file by clicking “Save” –button or by going to File Save.
D) Next time you can open this file from your project (saved on hard disc or equivalent) and write settings
to corresponding IED on field by pressing “Write all settings to device” -button.
C D
A

Updating Firmware of 857
• Updating firmware of the IED
– Make sure that communication speed is same in the IED and the setting tool.
1. Go to communication –menu and select “Update Firmware”. While doing this
SetPointPS has to be plank (no settings read from the IED).
2. When the IED confirms whether you want to proceed or not press “Yes”.
3. Choose correct file and start the update process by pressing “Open”.
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47
Local Panel User Interface of 857 and 865
1. Enter and confirmation key
(ENTER)
2. Cancel key (CANCEL)
3. Up/Down/Increase/Decrease
arrow keys (UP/DOWN)
4. Keys for selecting submenus
(LEFT/RIGHT)
5. Additional information key (INFO)

Local Panel User Interface (cont.)
Let’s edit the CT primary scaling value using the local panel
- press UP/DOWN keys to get to the CONF menu
- goto the CURRENT SCALING screen by
pressing RIGHT
- press ENTER
- select the value to be edited (UP & DOWN)
Rockwell Automation, Inc.
48
not editable

Local Panel User Interface (cont.)
- press ENTER to enter editing
49
Open the configurator access level
- press info
- press ENTER
- give the password if needed
- factory default passwords are
1 operator access for setting
2 configurator access (including operator access, too)
to get 2, press
- press ENTER
- access level will be back to user after 10 minutes timeout
- if needed, give password
for configurator access
(scaling is part of configuration)

Editing a Value
Now we are ready to edit the CT primary value
- select the value to be edited (UP & DOWN)
- press ENTER to enter editing
- give the password if needed
- set the value equal to 200 A using
LEFT and RIGHT buttons
- press ENTER to exit the editing
50
editable

Typical Configuration
• 857/865 generally (application example).
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Device Info
• Feeder or Motor application
– Application mode is selected at “DEVICE INFO” –menu when SetPointPS is being
used. While using the local HMI the setting can be found below CONF -menu
SW OPTIONS while password number “2” is enabled.
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Single Line Mimic
• Single line mimic
– Mimic can be modified at “M I M I C” –menu when SetPointPS is being used. It is not
possible to create or modify mimic display by using local HMI of the IED.
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Single Line Mimic (cont.)
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B C D
FE
A
A) Percentage indicates the amount of memory used for the mimic. 100% is the maximum
B) Clear objects/drawings by going on top or clear the whole mimic by clicking empty area
C) Text tool
D) Different type of line tools
E) Different type of configurable objects. Number of the used object corresponds to the
number in OBJECTS –menu
F) Predefined drawings

Single Line Mimic (cont.)
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B C
D
E
A
A) Remote / Local selection (auto-reclosing etc.)
B) AR On/Off selection
C) Virtual input activation to local mimic display
D) Describes the location
E) User configurable measurements

Edit a Value
- Click the value
- Type in the new value 100
- The available range is
shown in the lower left
corner
56

Scaling
• Scaling (CT & VT settings and nominal values)
– Following settings can be found at “S C A L I N G” –menu when SetPointPS is being
used. While using the local HMI the settings can be found below CONF -menu
CURRENT SCALING / MOTOR CURRENT / VOLTAGE SCALING / FREQUENCY
ADAPTATION.
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Scaling (cont.)
• Scaling (CT & VT settings and nominal values)
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B
C
E
A
A) Nominal current of the motor (only in motor mode).
B) CT ratio.
C) VT/PT ratio.
D) I0CT ratio.
E) Voltage measurement mode (Line to Line or Line to Neutral etc.)
F) Learned/used frequency when cannot be measured (857 when no voltage measurement connected).
D
F

Objects (Breakers, Switches, Disconnectors
etc.)
• Objects (Breakers, switches, disconnectors etc.)
– Object(s) can be found and configured at “O B J E C T S” –menu when SetPointPS
is being used. While using the local HMI the settings can be found below OBJ -menu
OBJECT STATUS / CONTROL OBJECTS / CTRL OBJECT 1-8 / OBJECT
BLOCKING.
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Objects (cont.)
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B
C
E
A
A) Input for selecting remote or local control generally.
B) Password enabling for object’s local mimic control.
C) Status of the object.
D) Physical position indication for object (open/close).
E) Control pulse length when object is controlled locally or remotely.
F) Digital or virtual input for local/remote object control. Locally push button or similar, remotely might be
virtual input.
D
F

Objects (cont.)
– How the controlling happens.
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B
C
A
A) Object 1 is controlled locally by using mimic display of the unit. IED has to be in local state
B) Object 1 is controlled locally by using local push buttons. IED has to be in local state.
C) Object 1 is controlled remotely by using SCADA or similar system. IED has to be in remote state.
D) Object has to be connected to output relays to be able to actually control the breaker/switch or so
on. Open and close coils of the actual object are wired through trip contacts of the IED.
D

Output Matrix
• Matrixes (output and block matrix)
– All connections and links between internal/externals signals are made in output
matrix. Protection stages, inputs, object information and logics among other things
can be connected to different type of outputs in output matrix. Such outputs are trip
and alarm contacts, LED:s, activation of disturbance recorder , virtual outputs etc.
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A
A) Different type of signals are activated in matrix when the signals are supposed to operate. Activated
input signal can be seen as a green horizontal line in matrix.
B) Every signal can be connected to different type of outputs as latched or non-latched contact.
C) Alarm contact A1 is connected to be activated whenever input signal DI2 is active. Activated output
signal can be seen as a green vertical line in matrix.
B
C
A1

Block Matrix
– All protection stages can be blocked in block matrix by using other protection stages,
inputs, object information, status information and logics etc.
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A
signal can be seen as a green horizontal line in matrix.
B) Every signal can be connected to different protection stages to block its functionality.
C) Below every configured block signals a padlock figure can be seen, even if the stage block is active or
not. Blocked vertical signal does not turn to green as in output matrix.
B
C Normal state
Trip limit
exceeded

Block Matrix (cont.)
– Object open and close blocking has an own dedicated menu called “OBJECT
BLOCK MATRIX”. Object blocking operates similar to “regular” block matrix.
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signal cannot be seen as a green horizontal line as in output matrix.
B) Signal can be connected to block open and/or close block signal of an object.
A B

Digital and Virtual Inputs
• Input signals (digital and virtual inputs)
– Digital inputs can be found and configured at “+DIGITAL INPUTS…” –menu when
SetPointPS is being used. While using the local HMI the settings can be found below
DI -menu DIGITAL INPUTS / DI COUNTERS / DELAYs for DigIn /
CONFIGURATION.
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Digital and Virtual Inputs (cont.)
– Digital inputs are available for control purposes. The polarity NO/NC and a delay can
be configured according to the application. The signals are available for the output
matrix, block matrix, user’s programmable logic etc.
– The contact connected to digital inputs DI1…6 must be dry (potential free). These
inputs are using the common internal +48VDC wetting voltage.
– The contact connected to digital inputs DI7…18 has to be connected to an external
operating voltage. External operating voltage can be between 18…265 VDC.
– Label and description texts of digital inputs can be edited with SetPointPS.
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A) Whether the used external operating voltage is AC or DC (DI7-18).
B) Number of digital input.
C) Status of the digital input.
D) Whether the connection is normally open or normally closed.
E) Activation / de-activation delay.
F) Digital input on/off information to Event buffer.
G) Whether digital input on/off information is desired to pop-up alarm display or not.
H) Digital input activation counter.
B C E
A
D
F
G H

– Label and description texts of digital inputs can be edited with SetPointPS.
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A) Digital input operation in event buffer.
B) Digital input activates the alarm screen.
A
B

– Virtual inputs are similar to digital inputs except instead of being physical contacts
the functionality is fully virtual and operated by the firmware of the IED. Virtual inputs
are useful while using SCADA or similar system for remote controlling or while doing
logics. The state of virtual inputs can be changed locally by using the local display or
by using SetPointPS.
– Virtual inputs can be found and configured from “+ VIRTUAL INPUTS…” –menu
when SetPointPS is being used. While using the local HMI the settings can be found
below DI -menu VIRTUAL INPUTS.
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A) Digital and virtual input used in logic for same purpose.
B) Activating virtual input by using the local display of IED. Password has to be enabled.
A
B

Output Relays and Virtual Outputs
• Output signals (output relays and virtual outputs)
– IED output contacts can be found and configured at “+ RELAYS…” –menu when
SetPointPS is being used. While using the local HMI the settings can be found below
DO -menu RELAY OUTPUTS 1-2 / PULSE LENGTH.
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Output Relays and Virtual Outputs (cont.)
– Output relays are also called digital outputs. Any internal signal in output matrix can
be connected to the output relays. An output relay can be configured as latched or
non-latched.
– The main difference between trip and alarm contacts is the DC breaking capacity.
The contacts are SPST normal open type (NO), expect alarm relays A1-A3 have
change over contacts (SPDT).
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Number of contacts 4
Rated voltage 250 V ac/dc
Continuous carry 5 A
Make and carry, 0.5 s
Make and carry, 3s
30 A
15 A
Breaking capacity, DC (L/R=40ms)
at 48 V dc:
at 110 V dc:
at 220 V dc
5 A
3 A
1 A
Contact material AgNi 90/10
Terminal block: Maximum wire dimension:
- Phoenix MVSTBW or equivalent 2.5 mm2 (13-14 AWG)
Number of contacts: 3 change-over contacts (relays A1, A2 and A3)
2 making contacts (relays A4 and A5)
1 change-over contact (IF relay)
Rated voltage 250 V ac/dc
Max. make current, 4s at duty cycle 10% 15 A
Continuous carry 5 A
Breaking capacity, AC 2 000 VA
Breaking capacity, DC (L/R=40ms)
at 48 V dc:
at 110 V dc:
at 220 V dc
1,3 A
0,4 A
0,2 A
Contact material AgNi 0.15 gold plated AgNi 90 / 10
Terminal block Maximum wire dimension
- Phoenix MVSTBW or equivalent 2.5 mm2 (13-14 AWG)

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A) Status of the trip contact.
B) While forcing is enabled it is possible to force the status of trip/signal/virtual output to closed (0) and
open (1). It is also possible to force the status of protection stages between -/Start/Trip. Forcing will be
automatically disabled 15 minutes after enabling.
C) Length of the control pulse when signal relay is controlled via SPA-bus.
D) Polarity of NO (SPST) output contacts can be changed to normally closed (NC). Notice that when IED
auxiliary power is off, the status of contact is always NO regardless the setting.
B
C
A
D

– Virtual outputs are similar to digital outputs except instead of having physical contacts the
functionality is fully virtual and operated by the firmware of the IED. Virtual outputs are useful
while using SCADA or similar system for remote controlling or while doing logics. The state of
virtual outputs can be changed by using the SetPointPS while forcing is enabled.
– Virtual outputs can be found and configured from “+ VIRTUAL OUTPUTS…” –menu when
SetPointPS is being used. Virtual outputs cannot be found from the local display.
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Logic
• Logic
– Logic can be modified at “LOGIC” –menu when SetPointPS is being used. It is not possible to
create or modify logic by using local HMI of the IED
– User configurable logic can be used to create/fulfill something that is not provided by the relay as
a default
– It is possible to create and/or –gates, counters (CT) and RS -swings. Every gate can be inverted
as well
– Creating of modifying logic always requires a restart of the IED
– There is room for total of 20 logic outputs. Logic memory is full when the status reaches [100% ]
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Logic (cont.)
• Logic
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B
C
A
A) Press empty area to add a logic gate, confirm new function by pressing “Yes”.
B) Logic function is always & -gate as a default.
C) While logic increases the capacity is increasing as well.
D) To joint logics, go on top of the output line of gate and hold down mouse left make the connection to
other logic functions input.
D

Logic (cont.)
• Logic
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C
E
B
A) Left click on top of any logic function to activate the “Select operation” view.
B) Edit properties button opens the “Function properties” window.
C) Generally it is possible to choose the type of logic function between and/or/counter/swing -gate.
D) When counter is selected, count setting may be set here.
E) Separate delay setting for logic activation and de-activation.
F) Possible to invert the output of logic. Inverted logic output is marked with circle.
D
A
F

Logic (cont.)
• Logic
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C
B
A) Select input signals can be done by pressing the following button or by clicking mouse left on top of the
logic input line.
B) Select outputs can be done by pressing the following button or by clicking mouse left on top of the
logic output line.
C) This deletes the logic function.
D) When logic is created and settings are written to the IED the unit requires a restart. After restarting the
logic output is automatically assigned in output matrix as well.
A
D

Protection Stages
• Protection stages and configuration
– Generally all IED protection stages can be enabled/disabled from one and same
location. Available protection stages vary according to the type of Relay.
– Valid protection stages can be found and configured at “VALID PROTECTION
STAGES” –menu when SetPointPS is being used.
– While using the local HMI the settings can be found below Prot -menu ENABLED
STAGES.
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Fault Logs and Events
• Fault logs and events
– Every protection stage has it’s own fault log. Fault log includes the information of
eight latest faults.
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A) Date of the fault.
B) Time of the fault.
C) Active group during the fault.
D) Fault type 1-N, 2-N, 3-N, 1-2, 2-3, 3-1 and 1-2-3.
E) Fault value.
F) 100% means the stage went to trip during the fault. 75% means that the stage only started and fault
disappeared before trip command.
G) Measured 1.0 second average before the fault.
A B C D E F G

Fault Logs and Events (cont.)
– Event buffer can be found at “EVENT BUFFER” –menu when SetPointPS is being
used. Events can be configured at “LOCALPANEL CONF” –menu.
– While using the local HMI the settings can be found below Evnt -menu EVENTS /
EVENT LIST.
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A) Running number of event.
B) Date.
C) Time.
D) Event code.
E) Explanation.
A B C D E

Fault Logs and Events (cont.)
– Fault logs and counters can be cleared at “PROTECTION STAGE STATUS 2” –
menu when SetPointPS is being used.
– While using the local HMI, event buffer can be cleared below Evnt -menu
EVENTS: “ClrEv”. Password has to be enabled when clearing events.
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Induction Motor Protection
• Induction motor protection
– Short circuit I>:
• Phase-to-phase and phase-to-ground faults are common types of short circuits
• When a motor starts, the starting current (which is typically 6 times FLA) has
asymmetrical components
• These asymmetrical currents may cause one phase to see as much as 1.7 times the
RMS starting current
• The breaker or contactor must have an interrupting capacity equal to or greater than
the maximum available fault current or let an upstream protective device interrupt fault
current
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Induction Motor Protection (cont.)
– Earth fault protection I0>:
• An earth fault is a fault that creates a path for current to flow from one of the phases
directly to the neutral through the earth bypassing the load.
– Earth fault in motor occur:
• When its phase conductor’s insulation is damaged for example due to voltage stress,
moisture or internal fault occurs between the conductor and ground.
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Residual current CT Connection
• Most sensitive & inherent noise
immunity
Residual Ground Fault Connection
• Less sensitive
• Drawbacks due to asymmetrical
starting current and un-matched CTs

– Unbalance protection I2>:
• Unbalance causes motor stress and temperature rise. Current unbalance in a motor is
result of unequal line voltages/unbalanced supply or blown fuse. Current unbalance
can also be present due to loose or bad connections, incorrect phase rotation
connection or stator turn-to-turn faults
– For a typical three-phase induction motor:
• 1% voltage unbalance (U2) relates to 6% current unbalance (I2). For small and medium
sized motors, only current transformers (CTs) are available and no voltage
transformers
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– Thermal overload T>:
• Insulation lifetime decreases by half if motor operating temperature exceeds thermal
limit by 10⁰C for any period of time
• Rotor conductors deforming or melting (for rotor limited – thermal limit is defined by
motor stall time)
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Disturbance Recorder
Features
• Two sample modes: Waveform mode and average mode
• All analog channels can be recorded. IL1, IL2, IL3 , I01, I02, Ua, Ub, Uc
• All digital inputs and outputs can be recorded
• In average mode also frequency and the calculated values can be recorded.
S, P, Q, cos ϕ, I1, I2, U1, ...
• Max. 12 channels
• Capacity 5 s ... 24 h ... depending on the configuration
• Capacity can be allocated for just one long recording or several shorter recordings
• COMTRADE file format
87

Disturbance Recorder (cont.)
Waveform sample mode
• 32, 16 or 8 samples/cycle
• Harmonics up to 15th and transients will be recorded
• Maximum recording length 1 s ... 20 s is depending on the number of channels
88

Average mode
• One sample per 10 ms, 20 ms, 200 ms, 1 s, 5 s, 10 s, 15 s, 30 s or 60 s
• The sampled value is the average
fundamental frequency value of the
sample interval
• Offers long recording times: from minutes
to tens of hours
• All harmonics information and any transient
phenomena will not be recorded
89

Configuration
90
Select channels
The device calculates the recording capacity according the configuration
Overflow: If the memory is full the oldest
recoding will be overwritten
Saturate: No more recordings if the
memory is full
To see the start of the fault
use a enough pre-trig portion if
the trip signals are used for triggering .

Pre trig time
91

Triggering
92

How to find out the trig reason?
93

Virtual Measurement
• Virtual measurement
– Virtual measurement can be used for simulating signals to the relay.
– It is possible to create currents, voltages and harmonics.
– There is possibility to have single injection or it is possible to create sequences.
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Virtual measurement (Firmware v.10.74 & setpontPS v.2.2.73)
As a default vitual
measurement is hidden
on the right side of the
setting tool. Crab the
bar and draw it in to the
left.

Virtual Measurement (cont.)
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Virtual measurement (Firmware v.10.74 & setpontPS v.2.2.73)
To start using, first enable the
virtual measurement.
Enable some cycles. When
running 50 Hz, 50 cycles
corresponds to 1 second.

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You can run single injection or
sequences.
Set currents and voltages.
Beware! Virtual measurement
is actually tripping protection
stages.

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Virtual comtrade injection (Firmware v.10.74 or later)
A: Open existing recording.
B: Enable virtual measurement.
C: Upload comtrade file to the
memory of the relay.
D: Play the file by pressing go.

Clearing Views
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Using of the SetPoint PS is more convenient when
the unused groups are hidden.
Clearing the views in SetPoint PS
If the configured groups have been marked with
selections the view can be cleared to show only
selected groups.

Clearing Views (cont.)
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Clearing the views in SetPoint PS
Same can be made to matrixes (output, block and
autoreclosing).
This is also useful feature for
verification that there is no
unnecessary connections into
tripping outputs connected.

Finishing Programming
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Finishing programming
When the relay is configured the setting file should be
saved with unique name so that the file may be
tracked down later if necessary.
In the SetPoint PS is possible to archive setting files
easily in to clear database called ”Device Library”.
New database is created by selecting ”Device
Library”- ”New Project”.
SetPoint PS will ask for a name for the project

Insert Photo Here
101
Q&A Session

857 motor protection relay

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