Areva MiCOM P125 Quick start guide

MiCOM
P125/P126/P127
Directional/Non-directional
Relay
Technical Guide
P12Y/EN T/E32

Technical Guide P12y/EN T/E32
MiCOM P125/P126 & P127 Page 1/2
MiCOM P125/P126 & P127
Directional/Non-directional Relay
CONTENT
Safety Section Pxxxx/EN SS/B11
Getting Started P12y/EN GS/D32
Handling, Installation and Case Dimensions P12y/EN IN/C22
User Guide P12y/EN FT/D32
Technical Data and Curve Characteristics P12y/EN TD/D32
Application Guide P12y/EN AP/D32
Commissioning and Maintenance Guide P12y/EN CM/C22
Connection Diagrams P12y/EN CO/C22
Commissioning Test and Record Sheet P12y/EN RS/D32

P12y/EN T/E32 Technical Guide
Page 2/2 MiCOM P125/P126 & P127
BLANK PAGE

Pxxxx/EN SS/B11
SAFETY SECTION

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Safety Section Page 1/10
CONTENTS
1. INTRODUCTION 3
2. HEALTH AND SAFETY 3
3. SYMBOLS AND EXTERNAL LABELS ON THE EQUIPMENT 4
3.1 Symbols 4
3.2 Labels 4
4. INSTALLING, COMMISSIONING AND SERVICING 4
5. DECOMMISSIONING AND DISPOSAL 7
6. EQUIPMENT WHICH INCLUDES ELECTROMECHANICAL ELEMENTS 7
7. TECHNICAL SPECIFICATIONS FOR SAFETY 7
7.1 Protective fuse rating 7
7.2 Protective Class 7
7.3 Installation Category 7
7.4 Environment 8
8. CE MARKING 8
9. RECOGNIZED AND LISTED MARKS FOR NORTH AMERICA 9

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BLANK PAGE

Pxxxx/EN SS/B11
Safety Section Page 3/10
1. INTRODUCTION
This guide and the relevant operating or service manual documentation for the equipment
provide full information on safe handling, commissioning and testing of this equipment and
also includes descriptions of equipment label markings.
Documentation for equipment ordered from AREVA Energy Automation & Information is
despatched separately from manufactured goods and may not be received at the same time.
Therefore this guide is provided to ensure that printed information normally present on
equipment is fully understood by the recipient.
Before carrying out any work on the equipment the user should be familiar with
the contents of this Safety Guide.
Reference should be made to the external connection diagram before the equipment is
installed, commissioned or serviced.
Language specific, self-adhesive User Interface labels are provided in a bag for some
equipment.
2. HEALTH AND SAFETY
The information in the Safety Section of the equipment documentation is intended to ensure
that equipment is properly installed and handled in order to maintain it in a safe condition.
It is assumed that everyone who will be associated with the equipment will be familiar with
the contents of that Safety Section, or this Safety Guide.
When electrical equipment is in operation, dangerous voltages will be present in certain parts
of the equipment. Failure to observe warning notices, incorrect use, or improper use may
endanger personnel and equipment and cause personal injury or physical damage.
Before working in the terminal strip area, the equipment must be isolated.
Proper and safe operation of the equipment depends on appropriate shipping and handling,
proper storage, installation and commissioning, and on careful operation, maintenance and
servicing. For this reason only qualified personnel may work on or operate the equipment.
Qualified personnel are individuals who
• are familiar with the installation, commissioning, and operation of the equipment and
of the system to which it is being connected;
• are able to safely perform switching operations in accordance with accepted safety
engineering practices and are authorised to energize and de-energize equipment
and to isolate, ground, and label it;
• are trained in the care and use of safety apparatus in accordance with safety
engineering practices;
• are trained in emergency procedures (first aid).
The operating manual for the equipment gives instructions for its installation, commissioning,
and operation. However, the manual cannot cover all conceivable circumstances or include
detailed information on all topics. In the event of questions or specific problems, do not take
any action without proper authorization. Contact the appropriate AREVA technical sales
office and request the necessary information.

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3. SYMBOLS AND EXTERNAL LABELS ON THE EQUIPMENT
For safety reasons the following symbols and external labels, which may be used on the
equipment or referred to in the equipment documentation, should be understood before the
equipment is installed or commissioned.
3.1 Symbols
Caution: refer to equipment documentation Caution: risk of electric shock
Protective Conductor (*Earth) terminal.
Functional/Protective Conductor Earth terminal
Note – This symbol may also be used for a Protective Conductor (Earth) terminal if that
terminal is part of a terminal block or sub-assembly e.g. power supply.
*NOTE: THE TERM EARTH USED THROUGHOUT THIS GUIDE IS THE DIRECT
EQUIVALENT OF THE NORTH AMERICAN TERM GROUND.
3.2 Labels
See "Safety Guide" (SFTY/4L M) for equipment labelling information.
4. INSTALLING, COMMISSIONING AND SERVICING
Equipment connections
Personnel undertaking installation, commissioning or servicing work for this
equipment should be aware of the correct working procedures to ensure safety.
The equipment documentation should be consulted before installing,
commissioning or servicing the equipment.
Terminals exposed during installation, commissioning and maintenance may
present a hazardous voltage unless the equipment is electrically isolated.
Any disassembly of the equipment may expose parts at hazardous voltage, also
electronic parts may be damaged if suitable electrostatic voltage discharge
(ESD) precautions are not taken.
If there is unlocked access to the rear of the equipment, care should be taken by
all personnel to avoid electric shock or energy hazards.
Voltage and current connections should be made using insulated crimp
terminations to ensure that terminal block insulation requirements are maintained
for safety.
To ensure that wires are correctly terminated the correct crimp terminal and tool
for the wire size should be used.
The equipment must be connected in accordance with the appropriate
connection diagram.

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Safety Section Page 5/10
Protection Class I Equipment
- Before energising the equipment it must be earthed using the protective
conductor terminal, if provided, or the appropriate termination of the
supply plug in the case of plug connected equipment.
- The protective conductor (earth) connection must not be removed since
the protection against electric shock provided by the equipment would
be lost.
The recommended minimum protective conductor (earth) wire size is 2.5 mm²
(3.3 mm² for North America) unless otherwise stated in the technical data section
of the equipment documentation, or otherwise required by local or country wiring
regulations.
The protective conductor (earth) connection must be low-inductance and as
short as possible.
All connections to the equipment must have a defined potential. Connections
that are pre-wired, but not used, should preferably be grounded when binary
inputs and output relays are isolated. When binary inputs and output relays are
connected to common potential, the pre-wired but unused connections should be
connected to the common potential of the grouped connections.
Before energising the equipment, the following should be checked:
- Voltage rating/polarity (rating label/equipment documentation);
- CT circuit rating (rating label) and integrity of connections;
- Protective fuse rating;
- Integrity of the protective conductor (earth) connection (where
applicable);
- Voltage and current rating of external wiring, applicable to the
application.
Equipment Use
If the equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.
Removal of the equipment front panel/cover
Removal of the equipment front panel/cover may expose hazardous live parts
which must not be touched until the electrical power is removed.
UL and CSA Listed or Recognized Equipment
To maintain UL and CSA approvals the equipment should be installed using UL
and/or CSA Listed or Recognized parts of the following type: connection cables,
protective fuses/fuseholders or circuit breakers, insulation crimp terminals, and
replacement internal battery, as specified in the equipment documentation.
Equipment operating conditions
The equipment should be operated within the specified electrical and
environmental limits.
Current transformer circuits
Do not open the secondary circuit of a live CT since the high voltage produced
may be lethal to personnel and could damage insulation.
Generally, for safety, the secondary of the line CT must be shorted before
opening any connections to it.
For most equipment with ring-terminal connections, the threaded terminal block
for current transformer termination has automatic CT shorting on removal of the
module. Therefore external shorting of the CTs may not be required, the
equipment documentation should be checked to see if this applies.
For equipment with pin-terminal connections, the threaded terminal block for
current transformer termination does NOT have automatic CT shorting on
removal of the module.

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External resistors, including voltage dependent resistors (VDRs)
Where external resistors, including voltage dependent resistors (VDRs), are
fitted to the equipment, these may present a risk of electric shock or burns, if
touched.
Battery replacement
Where internal batteries are fitted they should be replaced with the
recommended type and be installed with the correct polarity to avoid possible
damage to the equipment, buildings and persons.
Insulation and dielectric strength testing
Insulation testing may leave capacitors charged up to a hazardous voltage. At
the end of each part of the test, the voltage should be gradually reduced to zero,
to discharge capacitors, before the test leads are disconnected.
Insertion of modules and pcb cards
Modules and pcb cards must not be inserted into or withdrawn from the
equipment whilst it is energised, since this may result in damage.
Insertion and withdrawal of extender cards
Extender cards are available for some equipment. If an extender card is used,
this should not be inserted or withdrawn from the equipment whilst it is
energised. This is to avoid possible shock or damage hazards. Hazardous live
voltages may be accessible on the extender card.
Insertion and withdrawal of integral heavy current test plugs
It is possible to use an integral heavy current test plug with some equipment.
CT shorting links must be in place before insertion or removal of heavy current
test plugs, to avoid potentially lethal voltages.
External test blocks and test plugs
Great care should be taken when using external test blocks and test plugs such
as the MMLG, MMLB and MiCOM P990 types, hazardous voltages may be
accessible when using these. *CT shorting links must be in place before the
insertion or removal of MMLB test plugs, to avoid potentially lethal voltages.
*Note – when a MiCOM P992 Test Plug is inserted into the MiCOM P991 Test
Block, the secondaries of the line CTs are automatically shorted, making them
safe.
Fibre optic communication
Where fibre optic communication devices are fitted, these should not be viewed
directly. Optical power meters should be used to determine the operation or
signal level of the device.
Cleaning
The equipment may be cleaned using a lint free cloth dampened with clean
water, when no connections are energised. Contact fingers of test plugs are
normally protected by petroleum jelly which should not be removed.

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5. DECOMMISSIONING AND DISPOSAL
Decommissioning:
The supply input (auxiliary) for the equipment may include capacitors across the
supply or to earth. To avoid electric shock or energy hazards, after completely
isolating the supplies to the equipment (both poles of any dc supply), the
capacitors should be safely discharged via the external terminals prior to
decommissioning.
Disposal:
It is recommended that incineration and disposal to water courses is avoided.
The equipment should be disposed of in a safe manner. Any equipment
containing batteries should have them removed before disposal, taking
precautions to avoid short circuits. Particular regulations within the country of
operation, may apply to the disposal of batteries.
6. EQUIPMENT WHICH INCLUDES ELECTROMECHANICAL ELEMENTS
Electrical adjustments
It is possible to change current or voltage settings on some equipment by direct
physical adjustment e.g. adjustment of a plug-bridge setting. The electrical power
should be removed before making any change, to avoid the risk of electric shock.
Exposure of live parts
Removal of the cover may expose hazardous live parts such as relay contacts,
these should not be touched before removing the electrical power.
7. TECHNICAL SPECIFICATIONS FOR SAFETY
7.1 Protective fuse rating
The recommended maximum rating of the external protective fuse for equipments is 16A,
high rupture capacity (HRC) Red Spot type NIT, or TIA, or equivalent, unless otherwise
stated in the technical data section of the equipment documentation. The protective fuse
should be located as close to the unit as possible.
DANGER - CTs must NOT be fused since open circuiting them may
produce lethal hazardous voltages.
7.2 Protective Class
IEC 61010-1: 2001
EN 61010-1: 2001
Class I (unless otherwise specified in the equipment
documentation). This equipment requires a protective
conductor (earth) connection to ensure user safety.
7.3 Installation Category
IEC 61010-1: 2001
EN 61010-1: 2001
Installation Category III (Overvoltage Category III):
Distribution level, fixed installation.
Equipment in this category is qualification tested at
5kV peak, 1.2/50µs, 500Ω, 0.5J, between all
supply circuits and earth and also between
independent circuits

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7.4 Environment
The equipment is intended for indoor installation and use only. If it is required for use in an
outdoor environment then it must be mounted in a specific cabinet or housing which will
enable it to meet the requirements of IEC 60529 with the classification of degree of
protection IP54 (dust and splashing water protected).
Pollution Degree – Pollution
Degree 2
Altitude – operation up to
2000 m
IEC 61010-1: 2001
EN 61010-1: 2001
Compliance is demonstrated by reference to safety
standards.
8. CE MARKING
Marking
Compliance with all relevant European
Community directives:
Product safety:
Low Voltage Directive - 73/23/EEC
amended by 93/68/EEC
EN 61010-1: 2001
EN 60950-1: 2001
EN 60255-5: 2001
IEC 60664-1: 2001
Compliance demonstrated by reference to
safety standards.
Electromagnetic Compatibility Directive
(EMC) 89/336/EEC amended by
93/68/EEC.
The following Product Specific Standard
was used to establish conformity:
EN 50263 : 2000
Compliance demonstrated via the Technical
Construction File route.
Where applicable :
II (2) G
ATEX Potentially Explosive
Atmospheres directive
94/9/EC, for equipment.
The equipment is compliant with Article 1(2) of
European directive 94/9/EC. It is approved for operation
outside an ATEX hazardous area. It is however
approved for connection to Increased Safety, “Ex e”,
motors with rated ATEX protection, Equipment Category
2, to ensure their safe operation in gas Zones 1 and 2
hazardous areas.
CAUTION – Equipment with this marking is not itself
suitable for operation within a potentially explosive
atmosphere.
Compliance demonstrated by Notified Body certificates
of compliance.
Radio and
Telecommunications Terminal
Equipment (R & TTE)
directive 95/5/EC.
Compliance demonstrated by compliance to the Low
Voltage Directive, 73/23/EEC amended by 93/68/EEC,
down to zero volts, by reference to safety standards.

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9. RECOGNIZED AND LISTED MARKS FOR NORTH AMERICA
CSA - Canadian Standards Association
UL - Underwriters Laboratory of America
– UL Recognized to UL (USA) requirements
– UL Recognized to UL (USA) and CSA (Canada) requirements
– UL Listed to UL (USA) requirements
– UL Listed to UL (USA) and CSA (Canada) requirements
– Certified to CSA (Canada) requirements

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Getting Started P12y/EN GS/D32
MiCOM P125/P126 & P127
GETTING STARTED

Getting Started P12y/EN GS/D32
MiCOM P125/P126 & P127 Page 1/48
CONTENT
1. GENERAL CONSIDERATIONS 3
1.1 Receipt of Relays 3
1.2 Electrostatic Discharge (ESD) 3
2. HANDLING OF ELECTRONIC EQUIPMENT 4
3. RELAY MOUNTING 5
4. UNPACKING 5
5. STORAGE 5
6. USE OF THIS SECTION 5
7. INTRODUCTION TO THE MICOM RANGE 6
8. GENERAL ON MICOM P125, P126 & P127 7
8.1 MiCOM P125, P126 & P127 7
9. RELAY DESCRIPTION 8
9.1 Relay Overview 8
9.2 Front Panel Description 9
9.2.1 Relay Identification 10
9.2.2 Battery and Communication Port 11
9.3 Withdrawing Module from Case 12
9.4 Main Functions 13
10. OVERWIEW DIRECTIONAL PROTECTION FUNCTIONS 14
11. ENERGISING THE RELAY 15
11.1 System Connections 15
11.2 Auxiliary Power Supply Connections 15
12. MENU STRUCTURE 16
12.1 P125 Menu Structure 16
12.2 P126 & P127 Menu Structure 16
12.3 Access to the Menu 16
12.3.1 Password Protection 16
12.3.2 Password Entry 17

P12y/EN GS/D32 Getting Started
Page 2/48 MiCOM P125/P126 & P127
13. DEFAULT SETTINGS AND SETTING RANGE 18
14. DESCRIPTION REAR TERMINAL BLOCK FOR P125, P126 & P127 38
14.1 Description Rear Terminal Block for P125 38
14.2 Description Rear Terminal Block for P126 & P127 39
15. LOCAL CONNECTION TO A PC 40
15.1 Configuration 40
16. REMOTE CONNECTION 40
17. WIRING DIAGRAMS FOR P125, P126 & P127 43
17.1 P125 Wiring Diagram 43
17.2 P126 Wiring Diagram 44
17.3 P127 Wiring Diagram 45
18. CASE DIMENSIONS 46
18.1 P126 & P127 Case Dimension 46
18.2 P125 Case Dimension 46
19. COMPANY CONTACT INFORMATION 47