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GE DS3828CSN1A

The GE DS3828CSN1A is a motor protection and monitoring relay used for medium and low-voltage induction motors. It integrates motor protection, measurement, and monitoring functions.
  • Product Type: Motor Protection & Monitoring Relay
  • Rated Voltage: 110 VAC / 220 VAC / 24 VAC-DC (optional)

Detailed content

  • Current Input: 1 A or 5 A (via CT connection)
  • Measurement Accuracy: Current ±1.0%, Voltage ±1.0%, Power ±2.0%
  • Protection Functions:
    • Overcurrent (50/51)
    • Undercurrent (46)
    • Overvoltage (59)
    • Undervoltage (27)
    • Ground fault (50G)
    • Phase imbalance (46)
    • Thermal overload (49)
    • Startup timeout protection
    • Locked rotor protection
  • Communication Interface: RS485 Modbus RTU
  • Auxiliary Outputs: 4 programmable relay outputs
  • Event Logging: Up to 64 events
  • Local Operation: LED status indicators; local key parameter setting
  • Performance:
    • Operating Temperature: –10°C to +55°C
    • Protection Rating: IP51
    • Power Consumption: ≤4 VA (AC powered)
  • Mounting: DIN rail
  • Dimensions: Approx. 96 mm (W) × 112 mm (H) × 80 mm (D)
  • Materials:
    • Housing: Flame-retardant ABS engineering plastic (UL94 V-0)
    • Terminals: Phosphor bronze, nickel-plated
    • Front panel: Polycarbonate
  • Structural Features: DIN rail mounting with standard 96 mm cutout; front panel with 4-digit LED display and 6 status indicators; plug-in terminal block at bottom; RS485 communication port on side
  • Working Principle: CTs collect motor current signals, which are converted by A/D and processed by a microprocessor executing protection algorithms.
  • Installation Requirements: Mount on DIN rail; separate CT secondary wiring from control wiring; ensure proper grounding.
  • Usage Notes: CT ratio must be correctly programmed; perform periodic functional testing of protection elements; maintain dry storage environment.

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