ABB REF541-KM115AAAA Feeder Protection and Control Terminal
Product Description
REF541KM115AAAA belongs to the ABB ProtectIT REF541 series of Medium Voltage Feeder Terminal** (FT) devices, designed for 6-35kV medium voltage distribution systems. It integrates protection, measurement, control, fault recording, programmable PLC logic, and multi-protocol communication functions. It is compatible with single busbar and double busbar switch cabinets and supports various neutral point grounding systems such as ungrounded, resonant grounding, and small resistance grounding; it can be used for feeder, medium voltage motors, and parallel capacitor bank protection and control.
Product Performance
1. The complete feeder protection is integrated in a single device, supporting rapid tripping for phase-to-phase faults and grounding faults, and compatible with various neutral point grounding systems.
2. Integrated measurement and power quality monitoring, capable of collecting current, voltage, power, and harmonic data.
3. Built-in programmable PLC, reducing external hard wiring and enabling interlock and sequential control logic.
4. Fault recording, event recording, and fault location, facilitating fault traceback analysis.
5. Supports local panel operation, as well as remote modification of settings and opening/closing control from the background.
6. Rich communication interfaces for connecting to the substation automation system; an IEC61850 adapter module is required externally.
7. Device self-check, hardware abnormalities can trigger alarms; when replacing spare parts, it is necessary to verify the complete model and firmware version.
Application Fields
Medium-voltage switch cabinets in substations; 6-35kV power distribution systems in industrial factories and mines; protection and control of feeder lines, medium-voltage asynchronous motors, reactive power compensation capacitor banks; replacement of protection devices for old substations; protection and measurement control of intervals in public distribution networks.
Series and Compatible Models
1. REF543: Enhanced feeder terminal, with more I/O resources
2. REF545: High-end feeder terminal, with the most comprehensive functions
3. REM543 / REM545: Motor protection terminal, using the same hardware platform
4. SPA-ZC400: IEC61850 communication adapter module
5. SPA-ZC302: Profibus-DPV1 communication module
6. CAP505: PC configuration for setting software
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