P3U30-5AAA3BBAC Schneider Numerical Integrated Protection Relay

P3U30-5AAA3BBAC is a general-purpose numerical integrated protection relay from the Schneider Electric Easergy P3 Series, also commonly referred to as a “numerical protection relay” or “protective relay device”. It is mainly used for the protection, contrôle, measurement, and monitoring of feeders, transformateurs, moteurs, and other equipment in medium‑ and low‑voltage power systems.

In‑Depth Model Code Analysis (Schneider P3 Series Standard Naming Convention)

Code Segment	Signification	Description
P3U30	Basic Model	P3 = Easergy P3 Series; U = Universal Protection; 30 = 30TE standard size (approx. 190×190 mm)
5	Protection Configuration	5 = Standard feeder protection package (including overcurrent, instantaneous, earth fault, reclosing, and other basic functions)
AAA	Measurement & Inputs	1st A = 3CT (3 current transformer inputs); 2nd A = 1Io (1 residual current input); 3rd A = 4VT (4 voltage transformer inputs: 3 phases + neutral)
3	Interface de communication	3 = Dual RJ45 Ethernet ports (supports mainstream protocols such as Modbus TCP, CEI 61850)
BB	Digital I/O	1st B = 16DI (16 entrées numériques); 2nd B = 8DO (8 digital outputs)
UN	Auxiliary Power Supply	A = Wide‑range 48–230 V AC/DC power supply (adapts to various on‑site power conditions)
C	Digital Input Voltage	C = 220–230 V AC/DC (rated voltage for digital input circuits)

Paramètres techniques de base & Specifications

3.1 Paramètres électriques

Catégorie de paramètre	Spécification
Auxiliary Power	48–230 V AC/DC, 50/60 Hz, tolerance +10% / –15%
Digital Inputs (DI)	16 channels, 220–230 V AC/DC, opto‑isolated, response time ≤ 1 MS
Digital Outputs (DO)	8 channels, sorties relais, contact rating 250 V et / 10 A or 24 À DC / 10 UN
Analog Inputs	3 phase currents (CT), 1 residual current (Io), 4 voltages (Vermont)
Measurement Accuracy	Current/Voltage: Classe 0.2; Power/Energy: Classe 0.5

3.2 Fonctions de protection (Feeder‑specific Configuration)

Protection contre les surintensités (IDMT / definite time selectable)

Instantaneous overcurrent protection (directional optional)

Earth fault protection (definite time / IDMT)

Auto‑reclosure function (multi‑shot optional)

Protection contre les surcharges (alarme / trip selectable)

Voltage protection (surtension / sous-tension / dead voltage)

Frequency protection (overfrequency / underfrequency)

Non‑electrical protection (accepts temperature, pressure, etc.)

3.3 Communication Capabilities

Dual RJ45 Ethernet ports, supporting IEC 61850 ed.2, Modbus-TCP, DNP3 TCP, EtherNet/IP

Optional RS485 serial port (Modbus RTU)

Supports network time synchronization (SNTP) and event recording (SOE, resolution 1 MS)

3.4 Caractéristiques physiques

Dimensions: 30TE standard (approx. 190×190×180 mm)

Montage: Flush mounting (panel mounting) or DIN‑rail mounting

Ingress Protection: IP40 (front), IP20 (overall)

Température de fonctionnement: –25 °C to +70 °C; Storage temperature: –40 °C to +85 °C

Poids: approx. 2.5 kilos

Applications typiques
Medium‑/Low‑Voltage Feeder Protection: 10 kV / 20 kV / 35 kV distribution feeders, enabling fast fault clearance and power restoration via auto‑reclosing
Transformer Protection: Differential, overcurrent, temperature protection for distribution transformers (with matching CT/VT configuration)
Motor Protection: Starting and running protection for HV motors, including stall, surcharge, phase loss, earth fault, etc..
Capacitor Bank Protection: Surintensité, surtension, unbalance protection for reactive compensation capacitor banks
Industrial Automation Systems: Front‑end device for SCADA systems, providing accurate electrical measurement and equipment status monitoring
Avantages du produit & Caractéristiques
Conception modulaire: Protection functions flexibly configurable via software to suit various applications
Haute fiabilité: Based on Schneider Sepam, MiCOM, and Vamp platforms, compliant with strict EMC tests (CEI/EN 60255)
Comprehensive Measurement: Real‑time monitoring of 30+ electrical parameters: actuel, tension, pouvoir, energy, fréquence, harmonics, etc..
Flexible Communication: Supports multiple industrial protocols, easily integrated into smart grids and automation systems
User‑friendly: Chinese UI, local keypad operation, remote network configuration, built‑in fault recording (1024 points per cycle)
Modèles alternatifs & Accessories

6.1 Modèles alternatifs (Different Configurations in the Same Series)

Alternative Model	Main Differences	Application
P3U30-5AAA1BCAA	1×RJ45 + 1×RS485, DI = 24 V	Legacy system upgrades requiring RS485
P3U30-5AAA2BBAB	Single RJ45, auxiliary power = 110 V	Sites with specific voltage levels, simplified configuration
P3U30-5AAA3BDAA	Added arc‑flash protection	Fast protection for internal switchgear faults

6.2 Recommended Accessories

Communication cable: UTP Cat5e/Cat6 for Ethernet

I/O modules: Expand DI/DO up to 32DI/16DO

HMI panel: Facultatif, for local operation and data display

Test tool: Dedicated P3 series software for setting configuration and fault analysis

Installation & Operation Notes
CT/VT Wiring: Strictly observe polarity to avoid maloperation or inaccurate measurement
Power Supply: Ensure auxiliary power matches rating; surge protection recommended
Communication: Assign static IP to avoid conflicts
Setting Tuning: Set protection values appropriately according to on‑site equipment parameters
Entretien régulier: Annual function test, accuracy calibration, and communication/version check recommended

As a mainstream model of the Schneider Easergy P3 Series, the P3U30-5AAA3BBAC is widely used in power system protection and monitoring in industrial, energy, and infrastructure fields. It is an ideal choice for the intelligent construction of medium‑ and low‑voltage power grids.

Complete Model Guide for Schneider Easergy P3 Series

(Including Full Range Related to P3U30-5AAA3BBAC)

The Schneider Easergy P3 Series numerical protection relays are divided into Standard (P3U) and Advanced (P3x) lines, covering feeders, transformateurs, moteurs, generators, and other applications in medium‑/low‑voltage grids. All models are explained below by application, including key differences and suitable scenarios.

Standard Universal Protection Relays (P3U Series)

Suitable for general feeders, moteurs, transformateurs, cost‑effective and flexible.

Modèle	Taille	Fonctions principales	Typical Configuration	Application
P3U10	10TE (96×96 mm)	Basic overcurrent, no voltage measurement	P3U10-5AAA1BBAA	Simple feeders
			– 3CT+1Io, no VT	Small distribution circuits
			– 1×RJ45	Basic protection with limited budget
			– 16DI/8DO
P3U20	20TE (96×190 mm)	Standard overcurrent + directional, with voltage measurement	P3U20-5AAA2BBAC	Directional feeders
			– 3CT+1Io+4VT	Small/medium transformers
			– 1×RJ45	Applications requiring voltage monitoring
			– 16DI/8DO
			– 48–230 V AC/DC
P3U30	30TE (190×190 mm)	Full protection + complete measurement + advanced communication	P3U30-5AAA3BBAC (original)	Complex feeders
			P3U30-5AAA3BDAA (arc‑flash)	Large transformers
				Dual Ethernet redundancy
				High‑precision measurement

P3U Series Model Code Supplement

Standard format: P3UXX-5AAA3BBAC

5th digit (5): Protection type: 5=feeder, 6=motor, 7=transformer

6th–8th (AAA): Analog inputs: AAA=3CT+1Io+4VT, ABA=4CT+1Io+3VT

9th (3): Communication: 1=1×RJ45+1×RS485, 2=1×RJ45, 3=2×RJ45

10th–11th (BB): I/O: BB=16DI/8DO, BC=24DI/12DO, BD=32DI/16DO

12th (UN): Aux power: A=48–230 V AC/DC, B=110 V AC/DC, C=24 V DC

13th (C): DI voltage: C=220–230 V AC/DC, D=110 V AC/DC, E=24 V DC

Advanced Specialized Protection Relays (P3x Series)

For dedicated high‑performance protection with built‑in algorithms.

2.1 Feeder‑specific Advanced Protection

Modèle	Taille	Fonctions principales	Typical Configuration	Application
P3F30	30TE	Directional overcurrent + tension + optional arc	P3F30-CGGIA-AAEOA	Complex feeders
			– 4CT+4VT	Ring networks
			– 2×RJ45+1×RS485	Switchgear arc‑flash protection
			– 22DI/13DO
P3L30	30TE	Line differential + distance + directional overcurrent	P3L30-LGGIA-AAEOA	Long transmission lines
			– 6CT+4VT	Critical lines
			– Dual IEC 61850	Ring network differential
			– 22DI/13DO

2.2 Motor‑specific Advanced Protection

Modèle	Taille	Fonctions principales	Typical Configuration	Application
P3M30	30TE	Motor protection + RTD temperature	P3M30-MGGIA-AAEOA	HV motors
			– 3CT+1Io+4VT	Critical motors with temperature protection
			– 16DI/8DO + RTD
			– Dual RJ45
P3M32	30TE	P3M30 + motor differential	P3M32-MGGIA-AAEOA	Large motors (≥2000 kW)
			– 6CT+4VT	Motor‑transformer units
			– Differential module
			– 22DI/13DO

2.3 Transformer‑specific Advanced Protection

Modèle	Taille	Fonctions principales	Typical Configuration	Application
P3T32	30TE	Transformer differential + non‑electrical + backup	P3T32-TGGIA-AAEOA	Distribution transformers
			– 6CT+4VT	Power transformers
			– WOG/pressure/temperature
			– 22DI/13DO

2.4 Generator‑specific Advanced Protection

Modèle	Taille	Fonctions principales	Typical Configuration	Application
P3G30	30TE	Generator protection + synchrocheck	P3G30-GGGIA-AAEOA	Small generators
			– 3CT+1Io+4VT	Backup generators
			– Frequency/voltage/sync
			– 22DI/13DO
P3G32	30TE	Generator differential + stator/rotor earth	P3G32-GGGIA-AAEOA	Large generators
			– 6CT+4VT	Main power generators
			– 100% stator earth
			– Rotor earth

Key Comparison Table (Related to P3U30-5AAA3BBAC)

Article	P3U10	P3U20	P3U30	P3F30	P3M32
Taille	10TE	20TE	30TE	30TE	30TE
Max I/O	16DI/8DO	24DI/12DO	32DI/16DO	32DI/16DO	32DI/16DO
Communication	Single Ethernet + Serial	Single Ethernet	Dual Ethernet	Double + Dual Serial	Double + Dual Serial
Protection	Basic overcurrent	Surintensité + directional	Full + arc optional	Directional + tension + arc	Motor differential + RTD
Précision	Classe 0.5	Classe 0.5	Classe 0.2	Classe 0.2	Classe 0.2
Application	Simple feeder	Standard feeder/transformer	Complex feeder/transformer	Critical feeder/ring	Large motor