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P3U20
User Manual
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Schneider Electric P3U10, P3U20, P3U30, Easergy P3 User Manual

Easergy P3
Universal Relays P3U10, P3U20 and P3U30
User Manual
P3U/en M/F005
01/2020
www.schneider-electric.com

Table of Contents

Table of Contents
1. About this manual....................................................................... 12
2. Product introduction.................................................................... 18
2.4.1. User accounts......................................................................................27
2.4.2. Logging on via the front panel............................................................. 28
2.4.3. HTTP and FTP logon details............................................................... 28
2.4.4. Password management....................................................................... 29
2.4.5. Changing passwords for administrator and configurator accounts via
PuTTY............................................................................................................29
2.4.6. Password restoring.............................................................................. 31
2.5. Front panel.....................................................................................................32
2.5.1. Push-buttons........................................................................................32
2.5.2. LED indicators..................................................................................... 33
2.5.3. Controlling the alarm screen................................................................34
2.5.4. Accessing operating levels.................................................................. 34
2.5.5. Adjusting the LCD contrast.................................................................. 34
2.5.6. Testing the LEDs and LCD screen.......................................................35
2.5.7. Controlling an object with selective control..........................................35
2.5.8. Controlling an object with direct control............................................... 35
2.5.9. Menus..................................................................................................35
2.6. Easergy Pro setting and configuration tool.................................................... 38
Universal Relays P3U10, P3U20 and P3U30
2.5.9.1. Moving in the menus ............................................................. 37
2.5.9.2. Local panel messages............................................................38
3. Measurement functions...............................................................40
3.1. Primary, secondary and per unit scaling........................................................ 42
3.1.1. Frequency adaptation mode................................................................ 44
3.1.2. Current transformer ratio..................................................................... 45
3.1.3. Voltage transformer ratio..................................................................... 47
3.2. Measurements for protection functions..........................................................49
3.3. RMS values....................................................................................................50
3.4. Harmonics and total harmonic distortion (THD).............................................50
3.5. Demand values..............................................................................................51
3.6. Minimum and maximum values..................................................................... 53
3.7. Maximum values of the last 31 days and 12 months..................................... 54
3.8. Power and current direction........................................................................... 56
3.9. Symmetrical components...............................................................................57
P3U/en M/F005 3
Universal Relays P3U10, P3U20 and P3U30
4. Control functions......................................................................... 59
4.1. Digital outputs................................................................................................ 59
4.2. Digital inputs.................................................................................................. 61
4.3. Virtual inputs and outputs...............................................................................63
4.4. Matrix............................................................................................................. 66
4.4.1. Output matrix....................................................................................... 66
4.4.2. Blocking matrix.................................................................................... 67
4.4.3. Object block matrix.............................................................................. 68
4.4.4. Auto-recloser matrix.............................................................................69
4.5. Releasing latches...........................................................................................69
4.5.1. Releasing latches using Easergy Pro.................................................. 69
4.5.2. Releasing latches using buttons and local panel display.....................69
4.5.3. Releasing latches using F1 or F2 buttons........................................... 70
4.6. Controllable objects....................................................................................... 70
4.6.1. Object control with digital inputs.......................................................... 72
4.6.2. Local or remote selection.....................................................................72
4.6.3. Object control with Close and Trip buttons.......................................... 73
4.6.4. Object control with F1 and F2..............................................................73
4.7. Logic functions...............................................................................................74
4.8. Local panel.....................................................................................................82
4.8.1. Mimic view........................................................................................... 83
4.8.2. Local panel configuration.....................................................................85
Table of Contents
5. Protection functions.....................................................................90
5.1. Maximum number of protection stages in one application.............................90
5.2. General features of protection stages............................................................90
5.3. Application modes..........................................................................................98
5.4. Current protection function dependencies..................................................... 98
5.5. Dependent operate time................................................................................ 98
5.5.1. Standard dependent delays using IEC, IEEE, IEEE2 and RI curves.100
5.5.2. Custom curves................................................................................... 114
5.5.3. Programmable dependent time curves.............................................. 115
5.6. Synchronism check (ANSI 25)..................................................................... 116
5.7. Undervoltage (ANSI 27)...............................................................................120
5.8. Directional power (ANSI 32) ....................................................................... 123
5.9. Phase undercurrent (ANSI 37).....................................................................125
5.10. Broken conductor (ANSI 46BC) ................................................................ 126
5.11. Negative sequence overcurrent (ANSI 46) ................................................127
5.12. Incorrect phase sequence (ANSI 46) ........................................................129
5.13. Negative sequence overvoltage protection (ANSI 47)............................... 130
5.14. Motor start-up supervision (ANSI 48) ........................................................131
5.15. Thermal overload (ANSI 49 RMS)............................................................. 136
5.16. Breaker failure 1 (ANSI 50BF)................................................................... 140
5.17. Breaker failure 2 (ANSI 50BF)................................................................... 141
5.18. Switch-on-to-fault (ANSI 50HS) ................................................................ 147
5.19. Phase overcurrent (ANSI 50/51)................................................................149
4 P3U/en M/F005
Table of Contents
Universal Relays P3U10, P3U20 and P3U30
5.20.1. Ground fault phase detection...........................................................157
5.29.1. Ground fault phase detection...........................................................191
6. Supporting functions................................................................. 215
6.17.1. Trip circuit supervision with one digital input....................................263
6.17.2. Trip circuit supervision with two digital inputs.................................. 269
7. Communication and protocols...................................................273
7.2.1. Remote and extension ports..............................................................274
P3U/en M/F005 5
Universal Relays P3U10, P3U20 and P3U30
7.2.2. Ethernet port......................................................................................274
7.2.3. Disabling the Ethernet communication.............................................. 274
7.3.1. Modbus RTU and Modbus TCP.........................................................276
7.3.2. Profibus DP........................................................................................276
7.3.3. SPA-bus.............................................................................................277
7.3.4. IEC 60870-5-103 (IEC-103)...............................................................277
7.3.5. DNP 3.0............................................................................................. 278
7.3.6. IEC 60870-5-101 (IEC-101)...............................................................278
7.3.7. IEC 61850..........................................................................................279
7.3.8. HTTP server – Webset...................................................................... 279
7.4.1. Configuring the IP filter...................................................................... 280
7.4.2. Unexpected packets.......................................................................... 282
7.4.3. Alarms................................................................................................282
8. Applications and configuration examples..................................284
Table of Contents
9. Installation................................................................................. 289
9.6.1. Rear panel......................................................................................... 297
9.6.2. Auxiliary voltage.................................................................................309
9.6.3. Local port...........................................................................................309
9.6.4. Connection data.................................................................................310
9.6.5. External option modules.................................................................... 316
9.6.5.1. VSE-001 fiber optic interface module...................................316
9.6.5.2. VSE-002 RS-485 interface module...................................... 317
9.6.5.3. VSE-009 DeviceNet interface module..................................319
9.6.5.4. VPA-3CG Profibus interface module.................................... 320
9.6.5.5. VIO 12A RTD and analog input / output modules................ 321
9.6.6. Block diagrams.................................................................................. 322
9.6.7. Connection examples........................................................................ 329
10. Test and environmental conditions..........................................350
6 P3U/en M/F005
Table of Contents Universal Relays P3U10, P3U20 and P3U30
11. Maintenance............................................................................ 354
11.6.1. Diagnostics.......................................................................................356
12. Order codes and accessories................................................. 358
13. Firmware revision....................................................................362
P3U/en M/F005 7
Universal Relays P3U10, P3U20 and P3U30 Legal information
Legal information
The Schneider Electric brand and any registered trademarks of Schneider Electric Industries SAS referred to in this guide are the sole property of Schneider Electric SA and its subsidiaries. They may not be used for any purpose without the owner's permission, given in writing. This guide and its content are protected, within the meaning of the French intellectual property code (Code de la propriété intellectuelle français, referred to hereafter as "the Code"), under the laws of copyright covering texts, drawings and models, as well as by trademark law. You agree not to reproduce, other than for your own personal, noncommercial use as defined in the Code, all or part of this guide on any medium whatsoever without Schneider Electric's permission, given in writing. You also agree not to establish any hypertext links to this guide or its content. Schneider Electric does not grant any right or license for the personal and noncommercial use of the guide or its content, except for a non-exclusive license to consult it on an "as is" basis, at your own risk. All other rights are reserved.
Electrical equipment should be installed, operated, serviced and maintained only by qualified personnel. No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.
As standards, specifications and designs change from time to time, please ask for confirmation of the information given in this publication.
8 P3U/en M/F005
Safety information
Safety information
Important information
Read these instructions carefully and look at the equipment to become familiar with the device before trying to install, operate, service or maintain it.
The following special messages may appear throughout this publication or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure.
Universal Relays P3U10, P3U20 and P3U30
This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.
The addition of either symbol to a “Danger” or “Warning” safety label indicates that an electrical hazard exists which will result in personal injury if the instructions are not followed.
DANGER
DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
NOTICE is used to address practices not related to physical injury.
Please note
Electrical equipment must only be installed, operated, serviced, and maintained by qualified personnel. A qualified person is one who has skills and knowledge related to the construction, installation, and operation of electrical equipment and has received safety training to recognize and avoid the hazards involved.
No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.
Protective grounding
The user is responsible for compliance with all the existing international and national electrical codes concerning protective grounding of any device.
P3U/en M/F005 9
Universal Relays P3U10, P3U20 and P3U30 North America regulatory compliance
North America regulatory compliance
Certificate number: 20190829-E215590
Issue date: 2019-August-29
UL certifies that the Easergy P3 products comply with the following standards:
• UL 508 Industrial Control Equipment
• CSA C22.2 No. 14-13 Industrial Control Equipment
• IEEE C37.90-2005 Guide for Power System Protection Testing
• IEEE C37.90.1-2012 Standard for Surge Withstand Capability (SWC) Tests for Relays and Relay Systems Associated with Electrical Power Apparatus
• IEEE C37.90.2-2004 Standard for Withstand Capability of Relay Systems to Radiated Electromagnetic Interference from Trancievers
10 P3U/en M/F005
EU directive compliance Universal Relays P3U10, P3U20 and P3U30
EU directive compliance
EMC compliance
2014/30/EU
Compliance with the European Commission's EMC Directive. Product Specific Standard was used to establish conformity:
• EN 60255-26 2013
Product safety
2014/35/EU
Compliance with the European Commission's Low Voltage Directive. Product Specific Safety Standard was used to establish conformity:
• EN 60255-27 2014
P3U/en M/F005 11
Universal Relays P3U10, P3U20 and P3U30 1. About this manual

1. About this manual

1.1. Purpose

This document contains instructions on the installation, commissioning and operation of Easergy P3U10, P3U20 and P3U30.
This document is intended for persons who are experts on electrical power engineering, and it covers the relay models as described by the order code.
Related topics
Order codes on page 358

1.2. Related documents

Table 1 - Related documents
Document
Easergy P3 Universal Relay P3U Quick Start P3U/EN QS/xxxx
Easergy Pro Setting and Configuration Tool User Manual P3eSetup/EN M/xxxx
RTD and mA Output/Input Modules User Manual P3VIO12A/EN M/A001
Profibus Interface Module User Manual P3VPA3CG/EN M/A001
IEC 61850 configuration instructions P3APS17001EN
Rapid Spanning Tree Protocol (RSTP) P3APS17002EN
Parallel Redundancy Protocol for Easergy P3 relays with dual­port 100 Mbps Ethernet interface
Communication parameter protocol mappings P3TDS17005EN
Easergy P3 protection functions' parameters and recorded values
DeviceNet data model P3APS17008EN
Identification
P3APS17004EN
P3TDS17006EN
1
IEC103 Interoperability List P3TDS17009EN
DNP 3.0 Device Profile Document P3TDS17010EN
P3 Standard Series facia label instruction P3TDS17011EN
Principles of numerical protection techniques P3INS17019EN
1
xxxx = revision number
12 P3U/en M/F005
1. About this manual Universal Relays P3U10, P3U20 and P3U30

1.3. Abbreviations and terms

AFD Arc flash detection
ANSI American National Standards Institute
A standardization organisation
bps Bits per second
CB Circuit breaker
CBFP Circuit breaker failure protection
CLPU Cold load pickup
CM Common mode
Controlling output Heavy duty output rated for the circuit breaker controlling
CPU Central processing unit
cosφ Active power divided by apparent power = P/S
(See power factor PF.)
Negative sign indicates reverse power.
CT Current transformer
CT
PRI
CT
SEC
Dead band See hysteresis.
DI Digital input
Digital output Relay's output contact
DM Differential mode
DMS Distribution management system
Nominal primary value of current transformer
Nominal secondary value of current transformer
DO Digital output
Document file Stores information about the relay settings, events and fault logs
DSR Data set ready
An RS232 signal. Input in front panel port of Easergy P3 devices to disable rear panel local port.
DST Daylight saving time
Adjusting the official local time forward by one hour for summer time.
DT Definite time
P3U/en M/F005 13
Universal Relays P3U10, P3U20 and P3U30 1. About this manual
DTR Data terminal ready
An RS232 signal. Output and always true (+8 Vdc) in front panel port of Easergy P3 relays.
Easergy P3 Standard P3U10, P3U20 and P3U30 relays
Easergy P3
P3F30, P3L30, P3M30/32, P3G30/32 and P3T32 relays
Advanced
eSetup Easergy Pro Setting and configuration tool for Easergy P3 protection relays,
later called Easergy Pro
F2BIO 2 x optical BIO interfaces, fibre
GOOSE Generic object-oriented substation event
A specific definition of a type of generic substation event, for peer-peer communication.
Hysteresis I.e. dead band
Used to avoid oscillation when comparing two nearby values.
IDMT Inverse definite minimum time
I
MODE
Nominal current of the selected mode
In feeder mode, I
In motor mode, I
MODE
MODE
= CT
= I
MOT
PRIMARY
.
.
I
MOT
I
NOM
Nominal current of the protected motor
Nominal current
Rating of CT primary or secondary
I
SET
I
N(nom)
I
0 SET
Start setting value I> (50/51)
Nominal current of IN input in general
Start setting value I0>
IEC International Electrotechnical Commission
An international standardization organisation
IEC-101 Communication protocol defined in standard IEC 60870-5-101
IEC-103 Communication protocol defined in standard IEC 60870-5-103
IEEE Institute of Electrical and Electronics Engineers
IRIG-B Inter-Range Instrumentation Group time code B
Standard for time transfer
IT Instrument transformer (current or voltage transformer): electrical
device used to isolate or transform voltage or current levels
14 P3U/en M/F005
1. About this manual Universal Relays P3U10, P3U20 and P3U30
LAN Local area network
Ethernet-based network for computers and devices
Latching Digital outputs and indication LEDs can be latched, which means
that they are not released when the control signal is releasing. Releasing of latched devices is done with a separate action.
LCD Liquid crystal display
LED Light-emitting diode
NTP Network Time Protocol for LAN and WWW
OVF Indication of the event overflow
P Active power
Unit = [W]
PF Power factor
The absolute value is equal to cosφ, but the sign is 'IND' for inductive i.e. lagging current and 'CAP' for capacitive i.e. leading current.
PLC Programmable logic controller
P
M
Nominal power of the prime mover
(Used by reverse/under power protection.)
POC signals
Binary signals that are transferred in the communication channel of two P3L30 line differential relays in both directions. POC signals are used to transfer statuses of the DI, VI, VO and logic outputs.
pu
PU
Per unit
Depending of the context, the per unit refers to any nominal value.
For example, for overcurrent setting 1 pu = 1 x I N .For example, for overcurrent setting 1 pu = 1 x I
MOT
.
P3U P3U10, P3U20 and P3U30 protection relay
Q Reactive power
Unit = [var]
RELxxxxx Short order code
RH Relative humidity
RMS Root mean square
RS232 or RS485 (EIA-232 or EIA-485)
Standard defining the electrical characteristics of a serial communication interface
P3U/en M/F005 15
Universal Relays P3U10, P3U20 and P3U30 1. About this manual
RTU Remote terminal unit
S Apparent power
Unit = [VA]
SCADA Supervisory control and data acquisition
SF Alarm duty watchdog output is energized when the auxiliary
power supply is on and the product status is operative. This output is referenced as "service status output" in the setting tool.
Signaling output Alarm duty output rated, not suitable for direct circuit breaker
controlling
SNTP Simple Network Time Protocol for LAN and WWW
SOTF Switch on to fault
SPST Single pole single throw
SPDT Single pole double throw
TCS Trip circuit supervision
THD Total harmonic distortion
V Voltage V
V
NSEC
Voltage at input Vc at zero ohm ground fault. (Used in voltage measurement mode “2LL+VN”)
V
A
Voltage input for VAB or VA depending on the voltage measurement mode
V
B
Voltage input for VBC or VB depending on the voltage measurement mode
V
C
Voltage input for VCA or VN depending on the voltage measurement mode
V
N
Neutral voltage
Rating of VT primary or secondary
V
NOM
Nominal voltage
Rating of VT primary or secondary
UMI User-machine interface
USB Universal serial bus
UTC Coordinated Universal Time
Used to be called GMT = Greenwich Mean Time
Webset http configuration interface
16 P3U/en M/F005
1. About this manual Universal Relays P3U10, P3U20 and P3U30
VI Virtual input
VO Virtual output
VT Voltage transformer
VT
VT
PRI
SEC
Nominal primary value of voltage transformer
Nominal secondary value of voltage transformer
Parameter names in user manual and Easergy Pro
Some parameters may have a different name in this user manual compared to the Easergy Pro setting tool.
Table 2 - Parameter names in user manual and Easergy Pro
User manual Easergy Pro
Base angle setting range Angle offset
Characteristic curve / curve type Delay type
Cooling time coefficient Rel. cooling time coefficient
Dependent time coefficient Inv. time coefficient
Operate angle Pick-up sector size
Operate time Operation delay
Self-blocking value of undervoltage Low voltage blocking
Start value Pick-up setting
Start voltage
Time multiplier Inv. time coefficient / Inverse delay
3BIO 3 x hard-wired BIO interfaces
VN setting for INDir stage > (67N)
P3U/en M/F005 17
Universal Relays P3U10, P3U20 and P3U30

2. Product introduction

2.1. Warranty

This product has a standard warranty of 10 years.

2.2. Product overview

The relay communicates with other systems using common protocols, such as the Modbus RTU, ModbusTCP, IEC 60870-5-103, IEC 60870-5-101, IEC 61850, SPA bus, and DNP 3.0.
User interface
The relay can be controlled in three ways:
2. Product introduction
• Locally with the push-buttons on the relay front panel
• Locally using a PC connected to the USB port on the front
• Via remote control over the optional remote control port on the relay rear panel.
Easergy P3U10, P3U20 and P3U30 include all the essential protection functions needed to protect feeders and motors in distribution networks of utilities, industry and power plants for all level of voltage below 132 kV. Further, the relay includes several programmable functions, such as trip circuit supervision and circuit breaker protection and communication protocols for various protection and communication situations.
Protection functions
• Universal, adaptive protection functions for user-configurable applications like feeder, motor and voltage protection from basic non-directional to directional overcurrent protection, thermal overload, and auto-recloser
• Neutral overvoltage, overvoltage and frequency protection including synchronism check for two breakers
• Single-line diagram, measurements and alarms in the user-machine interface (UMI)
• User-configurable interlocking for primary object control
• Optional arc flash detection utilizing point sensors and a fiber loop that can provide system wide arc flash detection.
Virtual injection
• Current and voltage injection by manipulating the database of the product by setting tool disturbance recorder file playback through the product's database
Robust hardware
• User-selectable Ethernet, RS485 or RS232 -based communication interfaces
• Designed for demanding industrial conditions with conformal-coated printed circuit boards
• Standard USB connection (type B) for Easergy P3 setting software
18 P3U/en M/F005
1
4
3
2. Product introduction Universal Relays P3U10, P3U20 and P3U30
Common technology for cost efficiency
• Powerful CPU supporting IEC 61850
• Thanks to four setting groups, adaptation to various protection schemes is convenient
User-machine interface (UMI)
• Clear LCD display for alarms and events
• Single-line diagram mimic with control, indication and live measurements
• Programmable function keys and LEDs
• Circuit breaker ON/OFF control
• Common firmware platform with other Easergy P3 range protection relays
NOTE: If the device has been powered off for more than about one week, the UMI language after starting is IEC but after about two minutes, it is automatically updated to ANSI.

2.3. Product selection guide

The selection guide provides information on the Easergy P3 platform to aid in the relay selection. It suggests Easergy P3 types suitable for your protection requirements, based on your application characteristics. The most typical applications are presented along with the associated Easergy P3 type.
Table 3 - Applications
Easergy P3 Standard Easergy P3 Advanced
Voltage – –
Feeder
Transformer
P3U10 P3U20
Motor
P3U30
with
directional
o/c
with voltage
protection
P3F30
w.
directional
P3L30
w. line diff. &
distance
–
P3M30
–
–
P3T32
with
differential
P3M32
with
differential
Generator
P3G30
P3U/en M/F005 19
P3G32
with
differential
1
4
3
Universal Relays P3U10, P3U20 and P3U30 2. Product introduction
Easergy P3 Standard Easergy P3 Advanced
Measuring inputs
Phase current 1/5A CT (x3) 1/5A CT (x3) 1/5A CT (x6)
Residual current 1/5A CT or 0.2/1A CT 5/1A+1/0.2A 5/1A+1/0.2A +
5/1A CT
Voltage VT (x1) VT (x4) VT (x4) VT (x4)
Arc-flash sensor input – 0 to 4 point
sensor
0 to 4 point sensor
Digital I/O Input 2 8/10 16 6 to 36 6 to 16
Output 5 + WD 5/8 + WD 8 + WD 10 to 21 + WD 10 to 13 + WD
Analog I/O Input –
Output –
Temperature sensor input –
2
0 or 4
2
0 or 4
0 or 8 or 12
2
0 or 8 or 12
0 or 4
0 or 4
2
2
2
Front port USB USB
Nominal power supply
24 V dc or 24...48 V dc or 48...230 V ac/dc
3
24...48 V dc or 110...240 V ac/dc
Ambient temperature, in service -40...60°C (-40...140°F) -40...60°C (-40...140°F)
2
Using external RTD module
3
Check the available power supply range from the device's serial number label.
Table 4 - Communication & others
Easergy P3 Standard Easergy P3 Advanced
Communication
Rear ports RS-232 – ■ ■ ■
IRIG/B ■ ■ ■
RS-485 – ■ Using external
ETHERNET – ■ ■ ■
Protocols IEC 61850 Ed1
& Ed2
IEC 60870-5-101 – ■ ■ ■ ■
IEC 60870-5-103 – ■ ■ ■ ■
I/O module
– ■ ■ ■ ■
Using external
I/O module
DNP3 Over
– ■ ■ ■ ■
Ethernet
Modbus serial – ■ ■ ■ ■
Modbus TCP/IP – ■ ■ ■ ■
DeviceNet – ■ ■ ■ ■
Profibus DP – ■ ■ ■ ■
20 P3U/en M/F005
2. Product introduction Universal Relays P3U10, P3U20 and P3U30
Easergy P3 Standard Easergy P3 Advanced
SPAbus – ■ ■ ■ ■
Redundancy protocols
Others
Control
Logic Matrix ■ ■
Cyber security Password Password
Withdrawability (Pluggable connector)
Remote UMI – ■
RSTP – ■ ■ ■ ■
PRP – ■ ■ ■ ■
1 object
Mimic
Logic equations ■ ■
8 objects
Mimic
■ –
8 objects
Mimic
NOTE: The numbers in the following tables represent the amount of stages available for each Easergy P3 type.
Table 5 - Protection functions for P3U
Protection functions ANSI
code
Feeder
P3U10/20
Feeder P3U30 Motor P3U10/20 Motor P3U30
Fault locator 21FL – 1 – 1
Synchronism check
Undervoltage 27 – 3 – 3
Directional power 32 – 2 – 2
Phase undercurrent 37 1 1 1 1
RTD temperature monitoring
Negative sequence overcurrent (motor, generator)
Incorrect phase sequence 46 – – 1 1
Cur. unbalance, broken conductor
Negative sequence overvoltage protection
Excessive start time, locked rotor
5
4
25 – 2 – 2
38/49T 12 12 12 12
46 – – 2 2
46BC 1 1 – –
47 – 3 – 3
48/51LR – – 1 1
Thermal overload 49 1 1 1 1
Phase overcurrent 50/51 3 3 3 3
Ground fault overcurrent 50N/51N 5 5 5 5
Breaker failure 50BF 1 1 1 1
P3U/en M/F005 21
Universal Relays P3U10, P3U20 and P3U30 2. Product introduction
Protection functions ANSI
code
Feeder
P3U10/20
Feeder P3U30 Motor P3U10/20 Motor P3U30
SOTF 50HS 1 1 1 1
Capacitor bank unbalance
6
Voltage-dependent
51C 2 2 2 2
51V – 1 – 1
overcurrent
Overvoltage 59 – 3 – 3
Capacitor overvoltage 59C 1 1 – –
Neutral overvoltage 59N 3 3 3 3
CT supervision 60 1 1 1 1
VT supervision 60FL – 1 – 1
Starts per hour 66 – – 1 1
Directional phase
67 – 4 – 4
overcurrent
Directional ground fault
67N 3 3 3 3
o/c
Transient intermittent 67NI 1 1 – –
Second harmonic inrush
68F2 1 1 1 1
detection
Fifth harmonic detection 68H5 1 1 1 1
Auto-Recloser 79 5 5 – –
Over or under frequency 81 – 2/2 – 2/2
Rate of change of
81R – 1 – 1
frequency
Under frequency 81U – 2 – 2
Lockout 86 1 1 1 1
Programmable stages 99 8 8 8 8
Cold load pickup (CLPU) – 1 1 1 1
Programmable curves – 3 3 3 3
Setting groups
4
The availability depends on the selected voltage measurement mode (in the Scaling setting view in Easergy Pro)
5
Using external RTD module
6
Capacitor bank unbalance protection is connected to the ground fault overcurrent input and shares two stages with the ground fault
overcurrent protection.
7
Not all protection functions have 4 setting groups. See details in the manual.
7
– 4 4 4 4
Table 6 - Protection functions for Px3x
Protection functions ANSI
P3F30 P3L30 P3M30 P3M32 P3G30 P3G32 P3T32
code
Distance 21 – 1 – – – – –
Under-impedance 21G – – – – 2 2 –
22 P3U/en M/F005
2. Product introduction Universal Relays P3U10, P3U20 and P3U30
Protection functions ANSI
P3F30 P3L30 P3M30 P3M32 P3G30 P3G32 P3T32
code
Fault locator 21FL 1 1 – – – – –
Overfluxing 24 – – – – 1 1 1
Synchronism check
8
Undervoltage 27 3 3 3 3 3 3 3
Positive sequence under­voltage
Directional power 32 2 2 2 2 2 2 2
Phase undercurrent 37 – – 1 1 – – –
RTD temperature monitoring
9
Loss of field 40 – – – – 1 1 –
Under-reactance 21/40 – – – – 2 2 –
Negative sequence overcurrent (motor, generator)
25 2 2 2 2 2 2 2
27P – – – – 2 2 –
38/49T 12 12 12 12 12 12 12
46 – – 2 2 2 2 2
Incorrect phase sequence 46 – – 1 1 – – –
Cur. unbalance, broken
46BC 1 1 – – – – –
conductor
Negative sequence
47 3 3 3 3 3 3 3
overvoltage protection
Excessive start time,
48/51LR – – 1 1 – – –
locked rotor
Thermal overload 49 1 1 1 1 1 1 1
Phase overcurrent 50/51 3 3 3 3 3 3 3
Ground fault overcurrent 50N/51N 5 5 5 5 5 5 5
Breaker failure 50BF 1 1 1 1 1 1 1
SOTF 50HS 1 1 1 1 1 1 1
Capacitor bank unbalance
10
Voltage-dependent
51C 2 2 2 2 2 2 2
51V 1 1 – – 1 1 –
overcurrent
Overvoltage 59 3 3 3 3 3 3 3
Capacitor overvoltage 59C 1 1 – – – – –
Neutral overvoltage 59N 2 2 2 2 2 2 2
CT supervision 60 1 1 1 1 1 2 2
VT supervision 60FL 1 1 1 1 1 1 1
Restricted ground fault
64REF – – – – – 1 1
(low impedance)
P3U/en M/F005 23
Universal Relays P3U10, P3U20 and P3U30 2. Product introduction
Protection functions ANSI
P3F30 P3L30 P3M30 P3M32 P3G30 P3G32 P3T32
code
Stator ground fault 64S – – – – 1 1 –
Starts per hour 66 – – 1 1 – – –
Directional phase overcurrent
Directional ground fault o/c
Transient intermittent 67NI 1 1 – – – – –
Second harmonic inrush detection
Fifth harmonic detection 68H5 1 1 1 1 1 1 1
Pole slip 78PS – – – – 1 1 –
Auto-Recloser 79 5 5 – – – – –
Over or under frequency 81 2/2 2/2 2/2 2/2 2/2 2/2 2/2
Rate of change of frequency
67 4 4 4 4 4 4 4
67N 3 3 3 3 3 3 3
68F2 1 1 1 1 1 1 1
81R 1 1 1 1 1 1 1
Under frequency 81U 2 2 2 2 2 2 2
Lockout 86 1 1 1 1 1 1 1
Line differential 87L – 2 – – – – –
Machine differential 87M – – – 2 – 2 –
Transformer differential 87T – – – – – – 2
Programmable stages 99 8 8 8 8 8 8 8
Arc flash detection (AFD) – 8 8 8 8 8 8 8
Cold load pickup (CLPU) – 1 1 1 1 1 1 1
Programmable curves – 3 3 3 3 3 3 3
Setting groups
8
The availability depends on the selected voltage measurement mode (in the Scaling setting view in Easergy Pro)
9
Using external RTD module
10
Capacitor bank unbalance protection is connected to the ground fault overcurrent input and shares two stages with the ground fault
overcurrent protection.
11
Not all protection functions have 4 setting groups. See details in the manual.
11
– 4 4 4 4 4 4 4
Table 7 - Control functions
Control functions P3U10/20P3U30 P3F30 P3L30 P3M30 P3M32 P3G30 P3G32 P3T32
Switchgear control and
1/2 4 6 6 6 6 6 6 6
monitoring
Switchgear monitoring
– – 2 2 2 2 2 2 2
only
Programmable switchgear
■ ■ ■ ■ ■ ■ ■ ■ ■
interlocking
24 P3U/en M/F005
2. Product introduction Universal Relays P3U10, P3U20 and P3U30
Control functions P3U10/20P3U30 P3F30 P3L30 P3M30 P3M32 P3G30 P3G32 P3T32
Local control on single-
■ ■ ■ ■ ■ ■ ■ ■ ■
line diagram
Local control with O/I keys ■ ■ ■ ■ ■ ■ ■ ■ ■
Local/remote function ■ ■ ■ ■ ■ ■ ■ ■ ■
Function keys 2 2 2 2 2 2 2 2 2
Custom logic (logic
■ ■ ■ ■ ■ ■ ■ ■ ■
equations)
Control with Smart App ■ ■ ■ ■ ■ ■ ■ ■ ■
Table 8 - Measurements
Measurement P3U10/20P3U30 P3F30 P3L30 P3M30 P3M32 P3G30 P3G32 P3T32
RMS current values ■ ■ ■ ■ ■
12
■
■
RMS voltage values ■ ■ ■ ■ ■ ■ ■ ■ ■
RMS active, reactive and
– ■ ■ ■ ■ ■ ■ ■ ■
apparent power
12
■
12
■
Frequency ■ ■ ■ ■ ■ ■ ■ ■ ■
Fundamental frequency
■ ■ ■ ■ ■
12
■
■
12
■
■
current values
Fundamental frequency
– ■ ■ ■ ■ ■ ■ ■ ■
voltage values
Fundamental frequency
– ■ ■ ■ ■ ■ ■ ■ ■ active, reactive and apparent power values
Power factor – ■ ■ ■ ■ ■ ■ ■ ■
Energy values active and
– ■ ■ ■ ■ ■ ■ ■ ■ reactive
Energy transmitted with
– ■ ■ ■ ■ ■ ■ ■ ■ pulse outputs
Demand values: phase
■ ■ ■ ■ ■ ■ ■ ■ ■
currents
Demand values: active,
– ■ ■ ■ ■ ■ ■ ■ ■ reactive, apparent power and power factor
12
Min and max demand
■ ■ ■ ■ ■ ■ ■ ■ ■
values: phase currents
Min and max demand
■ ■ ■ ■ ■ ■ ■ ■ ■ values: RMS phase currents
P3U/en M/F005 25
Universal Relays P3U10, P3U20 and P3U30 2. Product introduction
Measurement P3U10/20P3U30 P3F30 P3L30 P3M30 P3M32 P3G30 P3G32 P3T32
Min and max demand values: active, reactive, apparent power and power factor
Maximum demand values over the last 31 days and 12 months: active, reactive, apparent power
Minimum demand values over the last 31 days and 12 months: active, reactive power
Max and min values: currents
Max and min values: voltages
Max and min values: frequency
– ■ ■ ■ ■ ■ ■ ■ ■
– ■ ■ ■ ■ ■ ■ ■ ■
– ■ ■ ■ ■ ■ ■ ■ ■
■ ■ ■ ■ ■ ■ ■ ■ ■
– ■ ■ ■ ■ ■ ■ ■ ■
■ ■ ■ ■ ■ ■ ■ ■ ■
Max andmin values:
– ■ ■ ■ ■ ■ ■ ■ ■ active, reactive, apparent power and power factor
Harmonic values of phase
■ ■ ■ ■ ■
12
■
■
12
■
12
■
current and THD
Harmonic values of
– ■ ■ ■ ■ ■ ■ ■ ■ voltage and THD
Voltage sags and swells – ■ ■ ■ ■ ■ ■ ■ ■
12
Function available on both sets of CT inputs
Table 9 - Logs and records
Logs and Records P3U10/20P3U30 P3F30 P3L30 P3M30 P3M32 P3G30 P3G32 P3T32
Sequence of event record ■ ■ ■ ■ ■ ■ ■ ■ ■
Disturbance record ■ ■ ■ ■ ■ ■ ■ ■ ■
Tripping context record ■ ■ ■ ■ ■ ■ ■ ■ ■
Table 10 - Monitoring functions
Monitoring functions
Trip circuit supervision
P3U10/
20
P3U30 P3F30 P3L30 P3M30 P3M32 P3G30 P3G32 P3T32
1 1 1 1 1 1 1 1 1
(ANSI 74)
Circuit breaker monitoring 1 1 1 1 1 1 1 1 1
Relay monitoring ■ ■ ■ ■ ■ ■ ■ ■ ■
26 P3U/en M/F005
2. Product introduction Universal Relays P3U10, P3U20 and P3U30
NOTE:
(1) Capacitor bank unbalance protection is connected to the ground fault overcurrent
input and shares two stages with the ground fault overcurrent protection.
(2) Not all protection functions have four setting groups. See details in the manual.
(3) Function available on both sets of CT inputs
(4) Using external RTD module
(5) The availability depends on the selected voltage measurement mode (in the Scaling
setting view in Easergy Pro).

2.4. Access to device configuration

You can access the device configuration via:
• the Easergy Pro setting tool
• the device’s front panel

2.4.1. User accounts

By default, the Easergy P3 device has five user accounts.
Table 11 - User accounts
User account User name Default
Use
password
User user 0 Used for reading parameter
values, measurements, and events, for example
Operator operator 1 Used for controlling objects and
for changing the protection stages’ settings, for example
Configurator conf 2 Needed during the device
commissioning. For example, the scaling of the voltage and current transformers can be set only with this user account. Also used for logging on to the HTTP server
Administrator admin 3 Needed for changing the
passwords for other user accounts and for creating new user accounts
Easergy easergy 2 Used for logging on to the FTP
server
P3U/en M/F005 27
***************
0
Universal Relays P3U10, P3U20 and P3U30 2. Product introduction

2.4.2. Logging on via the front panel

NOTE: To log on via the front panel, you need a password that consists of
digits only.
1. Press and on the front panel. The Enter password view opens.
Figure 1 - Enter password view
2. Enter the password for the desired access level.
Select a digit value using move to the next digit position using
NOTE: There are 16 digit positions in the Enter password view. Enter the password starting from the first digit position.
For example, if the password is 2, you can enter 2***, **2*, ***2, or 0002 to log on.
3. Press
Related topics
Password management on page 29
to confirm the password.

2.4.3. HTTP and FTP logon details

You can log on to the HTTP server and FTP using these user names and passwords.
Table 12 - HTTP and FTP logon details
Protocol User name Password
, and if the password is longer than one digit,
.
28 P3U/en M/F005
HTTP conf 2
FTP easergy 2
2. Product introduction

2.4.4. Password management

CYBERSECURITY HAZARD
To improve cybersecurity:
• Change all passwords from their default values when taking the protection device into use.
• Change all passwords regularly.
Failure to follow these instructions can increase the risk of unauthorized access.
You can change the password for the operator or configurator user accounts in the General > Device info setting view in Easergy Pro.
The password can contain letters, digits or any other UTF-8 characters (total 1–32 characters). However, the new password cannot be any of the default passwords (digits 0–4 or 9999).
Universal Relays P3U10, P3U20 and P3U30
NOTICE
NOTE: To log on via the front panel, you need a password that consists of digits only.
Related topics
Logging on via the front panel on page 28

2.4.5. Changing passwords for administrator and configurator accounts via PuTTY

Change the password for the administrator and configurator user accounts to reach an optimal cybersecurity level. To log on as the administrator user, you need to use either a serial terminal software or a Telnet client software. This instruction describes how to change the passwords using PuTTY which is freely available at https://www.putty.org/.
1. Download and install PuTTY.
2. Connect the Easergy P3 device to your PC via the USB port in the device's front panel.
3. Find the COM port number for the device (for example, with Easergy Pro).
4. Connect to the device’s COM port via PuTTY.
a. Open PuTTY.
The PuTTY Configuration dialog box opens.
P3U/en M/F005 29
Universal Relays P3U10, P3U20 and P3U30
2. Product introduction
Figure 2 - PuTTY Configuration dialog box
b. In the Serial line field, type the COM port name.
c. In the Speed field, set the communication speed to 187500 bps.
d. Click Open.
The PuTTY command window opens.
5. Log on as the administrator by giving command login.
Figure 3 - PuTTY login
6. Change the password for the administrator account by giving the command passwd.
30 P3U/en M/F005
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