ABB 70EA01B-ES HESG447307R1 is a power electronic module manufactured by ABB:
Model
- Main model: 70EA01B-ES
- Material number: HESG447307R1
Product Type
- Excitation Controller module for generator excitation system control.
Input Power
- Voltage: 24V DC (allowable fluctuation range ±20%)
- Current: Maximum 5mA
Output Specifications
- Voltage: 24V DC
- Current: Maximum 5A
Control Interfaces
- Supports multiple communication protocols: Modbus RTU/TCP, Profibus DP, Ethernet IP, etc.
- Provides analog input/output interfaces (e.g., 4-20mA, 0-10V)
- Supports digital input/output (DI/DO) for status monitoring and control signal transmission.
Control Accuracy
- Voltage regulation accuracy: ±0.1%
- Response time: ≤100ms (typical value)
Protection Functions
- Overcurrent Protection
- Overvoltage Protection
- Undervoltage Protection
- Thermal Protection
- Short Circuit Protection
Operating Environment
- Temperature range: -25°C to +70°C
- Humidity range: 5% to 95% (non-condensing)
- Protection level: IP65 (dustproof and waterproof)

