Description
ABB REF615 REF615A_1G HAFNAEFCNEC1BDD11G
REF615 & REF615A_1G HAFNAEFCNEC1BDD11G Product Introduction
1. Product Overview
REF615 is a feeder protection and control relay designed for medium voltage distribution networks. REF615A_1G with ordering code HAFNAEFCNEC1BDD11G is a specific hardware configuration variant of the REF615 series, tailored for comprehensive overhead line and cable feeder protection, measurement, monitoring and bay control applications in distribution substations, industrial power plants and renewable energy power stations. This device integrates multi-functional protection logic, measurement functions, human-machine interface and communication interfaces into a single compact unit to replace discrete protection, control and measuring devices.
ABB REF615 REF615A_1G HAFNAEFCNEC1BDD11G
2. Core Protection Functions
The configured HAFNAEFCNEC1BDD11G variant supports full set of feeder protection algorithms:
- Phase overcurrent protection including definite time and inverse time characteristics, multiple curve options for coordination
- Earth fault protection, residual overcurrent and sensitive earth fault protection for cable and overhead feeders
- Negative sequence overcurrent protection for phase unbalance and broken conductor detection
- Thermal overload protection to prevent cable and transformer overheating
- Under/over voltage protection, under/over frequency protection for grid stability monitoring
- Auto-reclosing function with configurable reclosing sequences for transient fault recovery
- Directional fault detection for radial and loop distribution networks
- Fault locator function to calculate fault distance on feeders for fast maintenance
3. Measurement & Monitoring Capabilities
- Three-phase voltage, three-phase current, neutral current and residual current measurement
- Active power, reactive power, apparent power, power factor, frequency and energy metering
- Harmonic measurement to monitor power quality distortion
- Event logging with high-precision time stamping for fault sequence analysis
- Fault recording function to capture voltage and current waveforms during fault incidents
- Temperature monitoring via external RTD sensors for cables or transformers
- Status monitoring of circuit breakers, disconnectors and earthing switches
4. Control & Interlock Functions
- Local and remote control of circuit breakers, disconnectors and earthing switches
- Configurable switchgear interlock logic to prevent unsafe operating sequences
- Programmable logic blocks for custom bay control logic without complex secondary wiring
- Automatic voltage control and load shedding logic for distribution feeders
- Trip circuit supervision to detect broken trip wiring or coil faults
5. Hardware Configuration Explanation (HAFNAEFCNEC1BDD11G)
The ordering string HAFNAEFCNEC1BDD11G defines the full hardware and functional setup of REF615A_1G unit:
- Housing & mounting: Standard front panel mounting enclosure for control cabinet installation
- Analog input modules: Configured for 3-phase current, 3-phase voltage and residual current transformers
- Binary input channels: Multiple digital inputs for switch position, external fault signals and interlock signals
- Binary output relays: High-capacity output contacts for breaker tripping, closing and alarm signaling
- Communication hardware: Integrated Ethernet and serial communication ports for substation automation systems
- Human-machine interface: Front panel LCD display, LED status indicators and operation pushbuttons for local operation and parameter viewing
- Power supply: Wide-range auxiliary power module compatible with DC and AC substation auxiliary supplies
- Optional extensions: Built-in RTD measurement interface, extra logic blocks and enhanced fault recording memory as specified in the code suffix
6. Communication Features
- Support of standard substation communication protocols including IEC 61850, Modbus TCP, Modbus RTU and IEC 60870-5-103
- Ethernet-based peer-to-peer communication for inter-bay protection coordination
- Serial communication for connection to legacy SCADA systems
- Event data, measured values and fault records uploaded to central control systems in real time
- Password-protected remote parameter setting and firmware upgrade
7. Environmental & Mechanical Specifications
- Operating temperature range suitable for indoor substation cabinet environments
- High electromagnetic compatibility performance to withstand substation interference from switching surges and short-circuit currents
- Compact panel-mount design to save cabinet space
- Dust and moisture resistant front panel conforming to standard industrial protection ratings
- Long service life with robust electronic components designed for continuous 24/7 operation
8. Typical Application Scenarios
- Medium voltage overhead distribution feeders
- Medium voltage cable feeders in urban distribution networks
- Auxiliary power feeders in industrial plants and power generation facilities
- Feeder protection for photovoltaic and wind power collection stations
- Bay-level integrated protection and control for distribution substation switchgear
9. Operational Advantages
- All-in-one integrated design reduces the quantity of secondary devices and simplifies wiring
- Fully configurable protection parameters and logic via software tool without hardware modification
- Comprehensive fault recording and event logging simplify post-fault troubleshooting
- Local HMI enables on-site inspection, testing and manual operation without laptop connection
- High interoperability with mainstream substation automation systems
- Low maintenance requirements with self-supervision functions that detect internal hardware faults and send alarm signals automatically
