ALSTOM

• Power Supply Voltage: 24 VDC, 48 VDC, 110/220 VAC (depending on the model)
• Input Signal: Analog/digital signal (depending on the model)
• Output Signal: Analog/digital signal, relay output (depending on the model)
• Communication Interface: RS232, RS485, Ethernet, IEC 61850, etc. (depending on the model)
• Operating Temperature Range: -40°C to +85°C (industrial grade)
• Protection Level: IP20 or higher (depending on the model)
• Mounting Method: Rack mounting, DIN rail mounting (depending on the model)

The ALSTOM 3EST125-975 is a thermistor-based thermal protection relay designed for continuous winding temperature monitoring of large rotating electrical machines, including generators and motors. The DCC2382A is the associated Digital Control Card (DCC) module that interfaces with the relay to provide signal conditioning, alarm processing, and trip output logic. This system is deployed in power generation plants, hydroelectric stations, and heavy industrial facilities where precise thermal protection of stator and rotor windings is mandatory.

Technical Specifications:

• Output Channels: 8 channels
• Output Signal Types:
  • Current: 0–20 mA or 4–20 mA
  • Voltage: 0–10 V
• Supply Voltage: 24 V DC (operating range: 19.2–30 V)
• Signal Accuracy: Industrial-grade precision, suitable for precise process control
• Isolation: Analog and digital circuits are isolated to enhance system anti-interference capabilities
• Feedback Mechanism: Built-in loop self-check function for output monitoring and calibration
• Dimensions: Approximately 26.5 × 2.6 × 26.5 cm
• Weight: Approximately 0.53 kg

Technical Specifications:

• Output Channels: 8 channels
• Output Signal Types:
  • Current: 0–20 mA or 4–20 mA
  • Voltage: 0–10 V
• Supply Voltage: 24 VDC (operating range: 19.2–30 VDC)
• Signal Precision: Industrial-grade accuracy compliant with precision process control standards
• Isolation: Analog and digital circuits are isolated to enhance system抗干扰能力 (anti-interference capability)
• Feedback Mechanism: Built-in loop self-checking for output monitoring and calibration
• Dimensions: Approximately 26.5 × 2.6 × 26.5 cm
• Weight: Approximately 0.53 kg
• Communication Protocols: Supports multiple industrial protocols, including CAN, RS485, RS232, and standard bus interfaces
• Processor: High-performance ARM Cortex-A9 (for railway applications) with 1GB DDR3 memory and 128MB NOR flash