ABB HESG324430R11/B
ABB HESG324430R11/B is a high-voltage electrical protection relay in the ABB HESG series, specifically designed for power systems (such as substations, power plants, and industrial distribution networks) to provide protection against overcurrent, short circuits, and ground faults. This relay adopts advanced Digital Signal Processing (DSP) technology, delivering high-precision fault detection and fast tripping functions to ensure the safe operation of power equipment.
Core Values of HESG324430R11/B
Multifunctional Protection: Integrates protection functions including Overcurrent (OC), Directional Overcurrent (DOC), and Earth Fault (EF).
High-Speed Operation: Tripping time ≤ 20ms, minimizing fault damage.
Communication Integration: Supports protocols such as IEC 61850 and Modbus, enabling seamless access to smart grids.
Product Parameters
Product Model: HESG324430R11/B
Manufacturer: ABB
Product Type: Digital protection relay
Rated Voltage: 110-240V AC/DC (power input)
Measurement Range: 1-100A (CT secondary side, programmable)
Protection Functions: Overcurrent (OC), Directional Overcurrent (DOC), Earth Fault (EF)
Operation Time: ≤ 20ms (instantaneous overcurrent)
Communication Protocols: IEC 61850, Modbus RTU/TCP, DNP3.0
Input/Output: 8× digital inputs, 6× relay outputs
Operating Temperature Range: -25°C to +70°C (-13°F to +158°F)
Protection Class: IP40 (panel mounting)
Certification Standards: IEC 60255, IEEE C37.90
Structure and Components
HESG324430R11/B consists of the following core components:
1. Signal Acquisition Unit
High-precision CT/PT interface, supporting 5A/1A CT secondary signal input.
2. DSP Processing Module
Real-time analysis of current/voltage waveforms, and detection of fault characteristics (e.g., harmonics, asymmetry).
3. Logic Control Unit
Programmable protection logic (configurable via PCM600 software).
4. Communication Interface Board
Dual Ethernet ports (for IEC 61850), and RS-485 (for Modbus RTU).
5. Human-Machine Interface (HMI)
128×64 LCD display, enabling local parameter setting and event log query.
Key Features and Advantages
1. High-Precision Protection Algorithm
Fast Fourier Transform (FFT) technology calculates fundamental and harmonic components in real time to avoid false operations.
Adjustable direction discrimination (-30° to +30°), suitable for looped power supply systems.
2. Flexible Configuration and Expansion
Customizable protection curves (e.g., inverse time, definite time) via PCM600 software.
Optional HMI module (such as HMI316) to enhance local operation functions.
3. Intelligent Communication Capability
Natively supports IEC 61850-8-1 GOOSE, enabling fast interlocking within substations.
Sequence of Events (SOE) resolution ≤ 1ms, facilitating fault analysis.
4. Industrial-Grade Reliability
Passes IEC 60255 shock/vibration tests (5g @ 100Hz).
Built-in Watchdog and self-test functions, ensuring long-term stable operation.
Application Fields
HESG324430R11/B is mainly used in the following scenarios:
Substations
10kV-35kV feeder protection (paired with the REF615 series).
Power Plants
Motor protection for auxiliary power systems.
Industrial Distribution
Backup short-circuit protection for large compressors and pump sets.
Typical Application Case
In 35kV substations, HESG324430R11/B serves as an incoming line protection relay, and links with circuit breakers (e.g., VD4) via GOOSE messages to achieve fault section isolation.
Installation and Maintenance
Installation Key Points
Use shielded wires with a cross-sectional area of ≥2.5mm² for CT secondary wiring to avoid induced voltage interference.
Lay communication cables (e.g., Ethernet cables) and power cables in separate layers, with a spacing of ≥30cm.
Maintenance Recommendations
Conduct protection setting verification once a year (using the CMC256 tester).
Regularly back up configuration parameters (via PCM600 software).
Xingruijia focuses on providing ABB industrial automation full range product services and your intelligent control solution partner
If you would like to learn more about our products and services, please feel free to contact us at any time!
Sales Manager : Jinny
Email : sales1@xrjdcs.com
Whatsapp/Mobile:+86 15359273791
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