Description
The ABB 216GD61A (HESG324436R3/A, HESG324428) is a Relay and Optocoupler Assembly designed for the ABB REG216 Numerical Generator Protection System. It provides binary input and output interface functions, including tripping relay outputs, auxiliary relay contacts, and optocoupler input circuits for generator protection applications.
The 216GD61A assembly is used as part of the REG216 protection platform and provides eight powerful potential-free tripping relays, sixteen auxiliary relays, and sixteen optocoupler input circuits. It enables reliable signal exchange between the protection relay system and external circuit breakers, alarms, and control devices.
This module is commonly applied in power plants, generator protection panels, and industrial electrical systems requiring dependable protection logic, trip control, and status monitoring.
🔹 Product Parameters Datasheet
| Parameter | Specification |
|---|---|
| Brand | ABB |
| Model | 216GD61A |
| Part Number | HESG324436R3/A |
| Series | REG216 Generator Protection System |
| Product Name | Relay and Optocoupler Assembly |
| Origin / Place of Origin | Sweden |
| Product Status | Tested Used / Refurbished Spare |
| Dimensions | Approx. 280 mm × 150 mm × 80 mm |
| Weight | Approx. 1.0–1.5 kg |
| Power Requirement | 24 VDC Auxiliary Supply |
| Discontinued Status | Legacy Product, Available as Replacement Spare |
🔹 Technical Features
🔸 Designed for ABB REG216 numerical generator protection systems
🔸 Provides eight tripping relay outputs with potential-free contacts
🔸 Includes sixteen auxiliary relay channels
🔸 Includes sixteen optocoupler input circuits
🔸 Supports reliable generator protection signal interfacing
🔸 Provides electrical isolation between protection circuits and external devices
🔸 Suitable for breaker trip, alarm, interlock, and status feedback applications
🔸 Designed for continuous operation in power generation environments
🔹 Common Questions & Answers
Q: What is the main function of ABB 216GD61A?
A: The 216GD61A is a relay and optocoupler interface assembly used in REG216 generator protection systems to provide trip outputs, auxiliary relay functions, and isolated digital inputs.
Q: Which ABB system uses this module?
A: It is mainly used in ABB REG216 generator protection systems.
Q: How many relay channels does 216GD61A provide?
A: The assembly provides eight tripping relays, sixteen auxiliary relays, and sixteen optocoupler input circuits.
Q: Is 216GD61A a PLC module?
A: No. It is a protection system interface assembly used in ABB electrical protection equipment.
Q: What should be checked before replacement?
A: Verify the complete ABB part number, REG216 rack configuration, relay wiring, auxiliary power supply, terminal connections, and protection settings before installation.
Q: Can this module replace another REG216 relay assembly directly?
A: Replacement depends on the existing REG216 hardware configuration and revision. System wiring and protection parameters should be confirmed before commissioning.
🔹 Recommended ABB Models
- 216DB61 – ABB REG216 Tripping Unit Module
- 216AB61 – ABB REG216 Binary Output Unit
- 216GE61 – ABB REG216 Input Auxiliary Relay Assembly
- 216EA61 – ABB REG216 Electronic Interface Assembly
- 216GW61 – ABB REG216 Input Transformer Device
- REG216 – ABB Numerical Generator Protection System
- REC670 – ABB Generator Protection and Control Relay
- RET670 – ABB Transformer Protection Relay
- REL670 – ABB Line Differential Protection Relay
- REF615 – ABB Feeder Protection and Control Relay
- REF620 – ABB Feeder Protection Relay
- REF542plus – ABB Bay Control and Protection Unit
- SPAC800 Series – ABB Modular Protection Relay Series
- UNITROL 6000 – ABB Static Excitation Control System
- UCD240A101 3BHE022287R0101 – ABB UNITROL Communication Control Measurement Module
