Alstom MiCOM P120, P121, P122 and P123 - Universal Overcurrent Relays

Short Technical Description. Publication P12x/EN BR/Km.
Alstom, Electronic Edition, 2002. — 12 pages.Серия устройств MiCOM P120-P123 – это универсальные токовые реле, произведенные компанией Alstom, начиная с однофазного P120 и заканчивая многофункциональным трехфазным P123 с защитой от замыканий на землю. Устройства MiCOM предназначены для защиты и управления индустриальными подстанциями, подстанциями коммунального хозяйства городов и сетями всех классов напряжений.
Краткое техническое описание (на английском языке).The MiCOM P12x series are the universal overcurrent relay range for Alstom. Starting with the single phase P120 up to the multifunction three phases and earth P123. MiCOM relays are fully designed to protect and control industrial plants, utilities substations and networks at any voltage level.Table of Contents:Description.
Models available.
Protection and control.
Time-delayed phase overcurrent (51).
Instantaneous phase overcurrent (50).
Time-delayed earth-fault overcurrent (51N).
Instantaneous earth-fault overcurrent (50N).
High impedance restricted earth-fault (64N).
Negative sequence overcurrent (46).
Broken conductor.
Thermal overload (49).
Undercurrent (37).
Blocking logic.
Cold load pickup.
Setting groups.
Programmable inputs and ouputs.
Output relay latching (86).
Circuit breaker failure protection (50BF).
Autorecloser (79).
Selective relay scheme logic.
Monitoring functions and measurements.
Circuit-breaker maintenance.
Measurements.
Instantaneous recording.
Event recording.
Disturbance recording.
Fault records.
User interface.
Front display and menus.
Dedicated LEDs.
Programmable LEDs.
Keypad.
Communication EIA RS485.
Communication EIA RS232.
MiCOM S1support software.
Hardware.
Case.
Wiring.
Scheme representing MiCOM P120/P121 relay off.
Scheme representing MiCOM P122/P123 relay off.
Technical specifications.
Inputs.
Burdens.
Thermal withstand.
Accuracy.
CT requirements.
Overcurrent settings.
Overcurrent time settings.
Thermal overload.
Cold load pickup.
Undercurrent.
CB fail detection.
Negative sequence overcurrent.
Broken conductor.
Recloser.
Circuit breaker control.
Contacts.
Housing.
High voltage withstand.
Electrical environment.
Atmospheric environment.
Outline description.
User interface includes.
Information required with order.