ABB HESG324436R3 216GD61A HESG324428
ABB HESG324436R3 216GD61A HESG324428
ABB HESG324436R3 216GD61A HESG324428
ABB HESG324436R3 216GD61A HESG324428
ABB HESG324436R3 216GD61A HESG324428

ABB HESG324436R3 216GD61A HESG324428 | Digital Generator Protection Modules

  • Brand: ABB
  • Model: HESG324436R3 216GD61A HESG324428
  • Product Type: Protection System Components
  • Series: REG216
  • Core Function: Provide relay, optocoupler, and binary signal processing for generator and transformer protection; enable fault isolation.
  • Key Specs: Designed for REG216 system; includes modules for electrical isolation and signal conversion.
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Part number: ABB HESG324436R3 216GD61A HESG324428
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Description

HESG324436R3 216GD61A HESG324428: Product Overview
These components are integral parts of the ABB REG216 digital generator protection system, a specialized Safety Instrumented System (SIS) for power generation applications. They occupy a critical position within the system’s architecture, serving as the interface for binary signal acquisition and processing. Specifically, they function as relay and optocoupler modules, providing electrical isolation between high-voltage primary circuits and the sensitive electronic protection relays. Their role is to detect abnormal conditions, such as phase imbalances, overcurrents, or differential faults, and to initiate trip signals to circuit breakers. The core functionality involves conditioning and isolating binary inputs from instrument transformers and auxiliary contacts, then communicating the processed data to the system’s central processing unit. The REG216 platform is known for its high availability, comprehensive protection algorithms, and seamless integration with plant-wide DCS and SCADA systems. The benefits of this platform include reduced footprint, simplified wiring, and advanced diagnostics, which collectively enhance system reliability and reduce maintenance demands.

ABB HESG324436R3 216GD61A HESG324428

ABB HESG324436R3 216GD61A HESG324428

HESG324436R3 216GD61A HESG324428: Technical Specifications
  • Model Number: HESG324436R3 216GD61A HESG324428
  • Manufacturer: ABB
  • Product Type: Protection System Components
  • System Compatibility: ABB REG216 Digital Generator Protection System
  • Primary Function: Electrical isolation, signal conversion, binary input processing
  • Component HESG324436R3: Relay and optocoupler module (Revision A)
  • Component 216GD61A: Auxiliary relay and optocoupler unit
  • Component HESG324428: Relay and optocoupler module (equivalent to 216GD61a)
  • Operating Temperature: -10°C to +55°C
  • Humidity: 5% to 95% non-condensing
  • Certifications: IEC 61850, IEEE C37.90
  • Mounting: Panel-mount within REG216 housing
  • Dimensions: Varies by component, designed for REG216 rack
  • Weight: Approximately 0.5-1.0 kg per component
Core Features & Customer Value
The modular design of the REG216 system, exemplified by these distinct components, allows for a clear division of labor. Each module addresses a specific need, such as relay-based isolation or auxiliary signal processing. For the maintenance engineer, this specialization simplifies troubleshooting and component replacement, as the function of each part is well-defined. This leads to a reduced mean time to repair and increased system availability. For the plant owner, the ability to replace a single failed module without affecting the entire system translates to lower spares inventory costs and less downtime.
Electrical isolation is a core feature delivered by these modules, achieved through the use of optocouplers. This galvanic separation protects the system’s sensitive digital electronics from high-voltage transients and ground loops commonly found in power generation environments. The benefit to the end user is a more robust and reliable protection system, capable of withstanding adverse electrical conditions without nuisance trips or damage to the core processor. This directly contributes to the safety and longevity of the asset being protected.
Integration within the REG216 platform ensures that these components operate as a cohesive unit. The system’s architecture is designed for high-speed data exchange and coordinated protection logic. For the engineer commissioning the system, this means predictable performance and simplified configuration through a unified interface. The result is a dependable safety instrumented system that meets stringent reliability requirements for critical power generation assets.

ABB HESG324436R3 216GD61A HESG324428

ABB HESG324436R3 216GD61A HESG324428

Typical Applications
In a steam power plant, these components are used in the generator protection scheme. For instance, in a generator differential protection function, the modules process signals from current transformers on the stator windings. If an internal fault is detected by comparing the currents entering and leaving the generator, the system initiates a trip command to the generator breaker, isolating the fault quickly to prevent damage.
At an electrical substation, the components are applied in transformer protection. They can interface with Buchholz relays, pressure sensors, and sudden pressure relay contacts on oil-filled power transformers. By monitoring these auxiliary contacts, the REG216 system can detect incipient faults like overheating or arcing, initiating alarms or tripping the transformer feeder breaker to prevent catastrophic failure.
In a hydroelectric generating station, these modules are employed in the backup protection for critical auxiliary systems. They can monitor the status of cooling water pumps, governor oil systems, and excitation systems. If a pump fails or an oil pressure drops, the module relays this information to the protection system, which can then take corrective action, such as tripping the generator or starting a standby pump, to ensure continued safe operation.

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