User Guide
P12x/EN FT/A96
MiCOM P121/P122/P123
Page 5/72
1.
PRESENTATION OF MiCOM P120, P121, P122 AND P123 RELAYS
MiCOM P120, P121 P122
and
P123
are fully numerical relays designed to perform electrical
protection and control functions.
The following section describes the MiCOM P120 range and the main differences between
the different models.
MiCOM relays are powered either from a DC (2 voltage ranges) or an AC auxiliary power
supply.
Using the front panel, the user can easily navigate through the menu and access data,
change settings, read measurements, etc.
Eight LEDs situated in the front panel help the user to quickly know the status of the relay
and the presence of alarms. Alarms that have been detected are stored and can be
displayed on the back-lit LCD.
Any short time voltage interruption (<50ms) is filtered and regulated through the auxiliary
power supply.
Regarding current inputs,
MiCOM P120
has 2 current inputs available, one for 1A and one
for 5A rated CTs.
MiCOM P121, P122
&
P123
have
3 phase and 1 earth current inputs available for 1 and 5
Amps rated CTs. On each one of these relays, it is possible to combine 1 and 5 Amp current
inputs together (i-e a mix between 1A for earth fault and 5A for phase connections).
MiCOM 120, P121, P122
and
P123
relays continuously measure phase and earth currents
(P120 makes a single measurement) and take into account the true RMS current value up to
10th harmonic (at 50 Hz).
Output relays are freely configurable and can be activated by any of the control or protection
functions available in the relay. Logic inputs can also be assigned to various control
functions.
On their rear terminals
MiCOM P120, P121 P122
and
P123
have a standard RS485 port
available. When ordering, the user can choose between the following communication
protocol: ModBus RTU, IEC 60870-5-103, Courier or DNP3.0.
Using RS485 communication channel, all stored information (measurements, alarms, and
parameters) can be read and settings can be modified when the chosen protocol allows it.
Reading
and modification of this data can be carried out on site with a standard PC loaded
with AREVA setting software.
Thanks to its RS485 based communication,
MiCOM P120, P121, P122
and
P123
relays can
be connected directly to a digital control system. All the available data can then be gathered
by a substation control system and be processed either locally or remotely.
Summary of Contents for MiCom P120
Page 1: ...MiCOM P120 P121 P122 P123 Overcurrent Relays Version 11 Technical Guide P12X EN T A96...
Page 2: ......
Page 4: ...P12x EN T A96 Technical Guide Contents Page 2 2 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 13: ...Introduction P12x EN IT A96 MiCOM P120 P121 P122 P123 INTRODUCTION...
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Page 16: ...P12x EN IT A96 Introduction Page 2 8 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 22: ...P12x EN IT A96 Introduction Page 8 8 MiCOM P120 P121 P122 P123 BLANK PAGE...
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Page 35: ...User Guide P12x EN FT A96 MiCOM P120 P121 P122 P123 USER GUIDE...
Page 36: ......
Page 40: ...P12x EN FT A96 User Guide Page 4 72 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 108: ...P12x EN FT A96 User Guide Page 72 72 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 109: ...Menu Content Tables P12x EN HI A96 MiCOM P120 P121 P122 P123 MENU CONTENT TABLES...
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Page 112: ...P12x EN HI A96 Menu Content Tables Page 2 68 MiCOM P120 P121 P122 P123 BLANK PAGE...
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Page 221: ...Application Guide P12x EN AP A96 MiCOM P120 P121 P122 P123 APPLICATION GUIDE...
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Page 226: ...P12x EN AP A96 Application Guide Page 4 80 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 302: ...P12x EN AP A96 Application Guide Page 80 80 MiCOM P120 P121 P122 P123 BLANK PAGE...
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Page 370: ...P12x EN CT A96 Communications COURIER DATABASE Page 2 248 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 514: ...P12x EN CT A96 Communications COURIER DATABASE Page 146 248 MiCOM P120 P121 P122 P123...
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Page 518: ...P12x EN CT A96 Communications IIEC 60870 5 103 Page 2 248 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 536: ...P12x EN CT A96 Communications IEC 60870 5 103 Page 20 248 MiCOM P120 P121 P122 P123...
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Page 540: ...P12x EN CT A96 Communications DNP 3 0 Database Page 2 248 MiCOM P120 P121 P122 P123 BLANK PAGE...
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Page 573: ...Connection Diagrams P12x EN CO A96 MiCOM P120 P121 P122 P123 CONNECTION DIAGRAMS...
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Page 582: ...P12x EN RS A96 Commissioning Test Record Sheets Page 2 60 MiCOM P120 P121 P122 P123 BLANK PAGE...
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