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Schneider électrique P243-311A2MCD28M
P243-311A2MCD28M is a comprehensive protection relay for rotating machines (motors/generators) from Schneider Electric’s MiCOM P243 series. It is a high-end digital protection device mainly used for the full protection, control and monitoring of large motors and synchronous motors.
- Interprétation du code modèle (P243-311A2MCD28M)
P243: Base series, motor differential protection and integrated management relay.
3: Hardware configuration/version (corresponding to I/O, power supply and interface combination).
11: Protection function configuration (including complete motor protection such as differential, surintensité, surchauffe, décrochage, unbalance protection, etc.).
A2: Auxiliary power supply rating (typically 220–240V AC/DC or 110V DC, subject to nameplate).
M.: CT input type (1UN / 5UN).
C: Interface de communication (including Modbus RTU, optional IEC 61850, Profibus-DP).
D28: I/O configuration (par ex.: 16 entrées numériques / 16 sorties relais).
M.: RTD temperature monitoring (supports 6–10 platinum resistance thermometers for winding/bearing temperature measurement).
- Fonctions principales & Fonctions de protection
- Main Protection
87 Motor differential protection (phase-to-phase/turn-to-turn faults)
50/51 Overcurrent/instantaneous overcurrent, 49 Stator overheating, 48 Stall/locked rotor
51N/50N Earth-fault overcurrent, 37 Underpower/overpower, 24 Speed supervision
- Mesures & Monitoring
Three-phase current, tension, pouvoir, fréquence, facteur de puissance
RTD temperature monitoring (windings, bearings, cooling medium)
Motor operating hours, start count statistics, event recording (1000+ enregistrements)
- Communication & Contrôle
Standard: Modbus RTU
Facultatif: CEI 61850, Profibus-DP, DNP3.0
Programmable logic (API), remote switching, fault recording
- Applications typiques
High-voltage induction/synchronous motors (pompes à eau, les fans, compresseurs, laminoirs)
Protection of generators and large rotating machinery
Critical motor circuits in industry, pouvoir, métallurgie, petrochemical, municipal engineering, etc..
- Paramètres techniques (Référence)
Operating power supply: 24–240 V CA/CC (wide range)
CT input: 1Un ou 5A
E/S: 16 DEPUIS / 16 FAIRE (sorties relais)
RDT: 6–10 channels Pt100/Pt1000
Précision: Current ±0.2%, Voltage ±0.5%
Ambiant: -25°C ~ +70°C, front panel IP54
- Differences Within the Same Series
P241: Standard motor protection (without differential)
P242: Enhanced motor protection
P243: Top configuration with differential protection (corresponding to model P243-xxxx)
Schneider électrique P243-311A2MCD28M
Schneider électrique P243-311A2MCD28M
Schneider électrique P243-311A2MCD28M
