ABB REF543KB127AAAA

Description

• Dimensions: 140 mm × 90 mm × 70 mm
• Operating temperature: –25 °C to +70 °C
• Humidity: 5 % – 95 % non-condensing
• Power supply options: 24 V DC, 110 V DC or 220 V DC wide-range input

• Comprehensive protection
  – Overcurrent, quick-break, thermal overload, ground-fault (directional/non-directional)
  – Over-/under-voltage, residual overvoltage, sequence-voltage protection
  – Over-/under-frequency and rate-of-change frequency protection
  – Phase-loss, fuse-failure and instantaneous/intermittent earth-fault monitoring
• Control & automation
  – Remote open/close commands for medium-voltage feeders
  – Programmable logic (timers, triggers) via PCM600 tool
  – Automatic reclosing, distributed generation two-way protection
• Measurement & monitoring
  – Real-time values: three-phase current, voltage, power, power factor, harmonics
  – Fault recording and sequence-of-events (SOE) with 1 ms resolution
  – Power-quality analysis: sag, swell, flicker detection
• Communication
  – Native IEC 61850 (GOOSE, 9-2 LE), Modbus, IEC 60870-5-103, DNP3
  – Optional IEC 61850 via SPA-ZC 400 and Profibus DPV1 via SPA-ZC 302 adapter
  – Redundant Ethernet (PRP/HSR) and serial RS-485/RS-232 ports
• Human-machine interface
  – 2 × 16 character LCD with navigation keys
  – Eight programmable LEDs for local status indication
  – Web server and wireless infrared service interface

• Medium-voltage feeder protection and control in substations with neutral ungrounded, resistance-earthed or arc-suppression-coil systems
• Ring-main and radial distribution networks
• Protection of three-phase asynchronous motors and shunt capacitor banks
• Substation automation integration with SCADA systems such as MicroSCADA Pro or COM600S