Home > Electrical & Electronics > Electrical Control System > ALSTOM MVAJ23B1AB0757B Current Relay

ALSTOM MVAJ23B1AB0757B Current Relay

ALSTOM MVAJ23B1AB0757B Current Relay thumbnail-1
ALSTOM MVAJ23B1AB0757B Current Relay thumbnail-2
ALSTOM MVAJ23B1AB0757B Current Relay photo-1
ALSTOM MVAJ23B1AB0757B Current Relay photo-2
Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Material:
Other, Global universal model
Condition:
Other, Global universal model
Task:
Other, Global universal model
Contact Supplier Request Quote Chat Now
Guizhou Yuanmiao Automation Equipment Co., Ltd.
Verified Business License
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.

Related Products

  • Product Details

  • Company Profile
  • Contact Us
Material Other, Global universal model
Condition Other, Global universal model
Task Other, Global universal model
Mathematical Model Other, Global universal model
Signal Other, Global universal model
Customized Non-Customized
Structure Other, Global universal model
ALSTOM MVAJ23B1AB0757BI. Functional FeaturesCore Function Upgrades and Extensions

  • Enhanced Multiple Protection Mechanisms:
    Inherits the inverse-time overcurrent protection of the same series (delayed cut-off is activated when the current exceeds 1.3 times the rated value), and adds adaptive short-circuit protection with a response time ≤8ms; thermal protection is upgraded to dual temperature sensor monitoring (module surface + internal core components), and supports a three-level derating strategy (75%→50%→25% power output) when overheated.
    Example: When the internal temperature exceeds 85°C, the system automatically switches to 50% power operation to avoid shutdown due to overheating.

  • Industrial Communication and Edge Computing:
    Standard with Modbus TCP/IP and PROFINET interfaces, and adds the OPC UA communication protocol to support real-time data interaction with cloud platforms; edge computing capabilities are improved, enabling local data processing and filtering of invalid signals (such as removing harmonic interference data) to reduce upload bandwidth occupation.

Performance Optimization and Innovations

  • Power Density and Load Adaptation:
    The "23" in the model may represent the power level (e.g., 230W), which is about 10% higher than the "21" series (210W). The output voltage/current may be 24V DC/3A (supporting short-term peak current of 5A), adapting to high-dynamic load scenarios (such as servo motor drives).

  • Intelligent Interaction and Debugging:
    Equipped with a 3.5-inch color touch screen, supporting visual parameter configuration (such as dynamic adjustment of protection thresholds) and graphical display of fault codes (including fault location schematics); integrated with Bluetooth 5.0 interface, allowing remote monitoring of real-time data (such as voltage fluctuation curves and temperature trends) through a mobile APP.

  • System Collaboration and Reliability:
    The current sharing control algorithm is optimized, and the current unbalance degree during parallel operation of multiple modules is ≤±1.5%, supporting hot-swappable module replacement; if used in a battery management system, it adds a lithium battery state of health (SOH) estimation function, which predicts the remaining battery life through internal resistance monitoring.

MVAJ23B1AB0757B (2)

II. Technical Parameters
Parameter Type Range/Specification Differences and Upgrade Instructions
Input Voltage 85-264V AC (wide voltage)/110-370V DC Supports AC/DC hybrid input, adapting to unstable power grid environments (such as generator power supply in industrial sites); the surge resistance during DC input is upgraded to 4kV (1.2/50μs waveform).
Output Voltage/Current 24V DC/3A (rated), peak 3.5A (30s) Voltage accuracy ±0.5%, ripple ≤50mV (20MHz bandwidth), current increased by 50% compared with the "21" series, supporting capacitive loads (maximum 1000μF).
Operating Temperature -25℃~+75℃ (no derating), -40℃~+85℃ (derating) Wide-temperature design adapts to outdoor or harsh industrial environments, and the cold start time at -25℃ is ≤1.5 seconds (traditional models require 3 seconds).
Communication Interfaces Modbus RTU/TCP, PROFINET, EtherCAT Adds EtherCAT high-speed bus interface, with data transmission delay ≤100μs, supporting real-time synchronization with motion control equipment.
Protection Functions Overcurrent, overvoltage, undervoltage, overheating, short circuit, ground fault Adds surge protection (SPD) (common mode/differential mode 10kA) and arc detection (identifies potential arc faults through current waveform distortion).
Efficiency and Power Consumption Full-load efficiency ≥96.5% (230V AC input) Standby power consumption
III. Working PrincipleCore Architecture and Hardware Upgrades

  • Detection and Sampling Unit:
    Adopts high-precision MEMS current sensors (range 0-5A, error ≤0.3%) and voltage divider resistor networks, supporting broadband signal collection of 50-5000Hz, adapting to high-frequency harmonics in new energy grids (such as 1000Hz harmonics generated by photovoltaic inverters); the sampling rate is increased to 100kSPS to capture transient faults in real time (such as current mutations within 20μs).

  • Control and Processing Unit:
    Equipped with an ARM Cortex-M7 processor (main frequency 200MHz), integrated with a hardware encryption engine (AES-256), and protection parameters are stored in anti-interference Flash chips (supporting 100,000 times of erasing and writing); the control algorithm is optimized to dual-loop PID + fuzzy logic, with a dynamic response time ≤5ms (traditional PI control requires 15ms).

  • Execution and Drive Unit:
    Adopts third-generation SiC MOSFET power devices, with switching losses reduced by 30% and the switching frequency increased to 100kHz (traditional IGBT is 20kHz). Together with the LLC resonance topology, it realizes zero-voltage switching (ZVS) to reduce electromagnetic interference (EMI).

Workflow and Algorithm Logic

  • Power Conversion and Energy Efficiency Optimization:
    Adopts a three-level topology structure, and the input-stage EMI filter circuit is upgraded to a π-type multi-stage filter to suppress common-mode interference to -60dB (10-100MHz frequency band); high-frequency PWM modulation combined with soft switching technology reduces switching losses to 0.1W/A, and the efficiency curve is ≥95% in the 20%-100% load range.

  • Fault Diagnosis and Waveform Recording:
    Built-in high-speed ADC (16-bit, 2MSPS), supporting waveform recording from 100ms before to 200ms after the fault (sampling rate 10kHz), and data is stored in a circular buffer, which can be exported through the Ethernet interface; the fault location accuracy reaches 1/100 of the phase voltage/current cycle (i.e., 0.02ms), meeting the IEEE 1588 clock synchronization requirements (accuracy ±1μs).

System Collaboration and Intelligent Management

  • Power Grid and Equipment Interaction:
    Supports the IEC 61850-9-2LE sampled value transmission protocol to interact with the substation automation system (SAS) in real time for protection status; has a load prediction function, which learns through historical data (such as the current curve in the past 24 hours) and adjusts the output power in advance to avoid overload.

  • Preventive Maintenance Mechanism:
    Monitors the mechanical stress during module operation through a vibration sensor (range ±50g), and uses machine learning algorithms to predict the capacitor life (error ≤5%) and fan wear status in combination with parameters such as temperature and current. When the remaining life is

MVAJ23B1AB0757B (1)

IV. Comparison Summary with MVAJ21L1GB0771B
Dimension MVAJ21L1GB0771B MVAJ23B1AB0757B
Power Level About 210W (24V/2A) About 230W (24V/3A), peak power increased by 50%
Communication Interfaces Modbus, RS485, Ethernet Newly added PROFINET, EtherCAT, OPC UA
Protection Functions Basic overcurrent/thermal protection Newly added arc detection, surge protection, dual-sensor thermal monitoring
Core Components Traditional IGBT + Hall sensor SiC MOSFET + MEMS sensor, sampling accuracy increased by 40%
Intelligence Basic parameter display Touch screen + APP remote monitoring, supporting AI predictive maintenance
Product Tags: MVAJ23B1AB0757B

Send Inquiry to This Supplier

* Message
0/5000

Want the best price? Post an RFQ now!
Guizhou Yuanmiao Automation Equipment Co., Ltd.
Verified Business License
Business Type
Trading Company
Year Established
2014
Factory Size
1,000-3,000 square meters
Product Certifications
SA8000
Contact Supplier Request Quote Chat Now

You May Also Like

Product Categories

Recommended Categories

Explore top categories and find suppliers for your specific needs
Telecommunication & Broadcasting Telecommunication & Broadcasting
Optical Fiber, Cable & Wire Optical Fiber, Cable & Wire
Power Transmission & Transformer Power Transmission & Transformer
Power Supply & Distribution Power Supply & Distribution
Sensor Sensor
Passive Components Passive Components
Battery, Storage Battery & Charger Battery, Storage Battery & Charger
Switch Switch
Connector & Terminals Connector & Terminals
Electric Motor Electric Motor
Integrated Circuit Integrated Circuit
Antenna Antenna
GPS GPS
Socket & Outlet Socket & Outlet
Breaker & Protector Breaker & Protector
Inverter Inverter
Circuit Board Circuit Board
Electronic Tube & Transistor Electronic Tube & Transistor
Cable Parts Cable Parts
Relay & Contactor Relay & Contactor
Smart Card & Card Reader Smart Card & Card Reader
Remote Control Remote Control
Other Electronics Other Electronics
Variable-Frequency Drive Variable-Frequency Drive
Electronics Stocks Electronics Stocks
Transmitter Transmitter
Rectifier Rectifier
Semiconductor Semiconductor
Oscillator Oscillator
Heating, Refrigeration & Temperature Control Heating, Refrigeration & Temperature Control
Insulation Insulation
Electric Contact & Materials Electric Contact & Materials
Semiconductor Silicon Semiconductor Silicon
Specialized Electrical Equipment Specialized Electrical Equipment
Encoder Encoder
Speaker,Trumpet & Buzzer Speaker,Trumpet & Buzzer
Plug Plug
LED Video Processor LED Video Processor