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Technical specification Manual 3D drawing

Automation

Three-Phase Phase Loss, Phase Inversion, and Under/Overvoltage Protection Relay DFF

CÓD: DFF5-460

Description

Three-phase protection relay for detecting phase loss and phase reversal in electrical systems. Ensures safe operation of motors and equipment. Features visual status indication and reliable operation. Ideal for 220/460VAC networks.

  • Protection against phase loss and phase reversal, under and overvoltage
  • Configurable settings and easy operation
  • LED status indicators
  • Standard DIN rail mounting

General specifications
ModelDFF5-460
Overvoltage2 ~ 20%
Undervoltage-20 ~ 20%
Assimetria8%
Delay time0.1 ~ 10s
Phase sequence●
Phase loss●
StandardsIEC / EN60255-6, IEC / EN61010-1
FunctionMonitor of voltage tripolar
Monitoring terminalsL1 - L2 - L3
Power terminalsL1 - L2
Power supply176 ~ 552V (F-F / P-P)
Frequency45 ~ 65Hz
Overvoltage adjustment limits2 ~ 20%
Undervoltage adjustment limits-20 ~ 20%
Assimetria8%
Hysteresis2%
Delay time0.1 ~ 10s ± 10% (adjustable)
Erro≤1%
Accuracy in the button of adjustment1% of full scale
Start-up delay0.5s
Power-on indicationGreen LED
Output indicationRed LED
Reset time1s
Output1 changeover (SPDT) relay
Current ratings10A - AC1
Switching voltage (max.)250VAC / 24VDC
Temperature coefficient0.05% / °C, ta = 20°C
Mechanical life10 x 10⁶ operations
Electrical life (AC1)10⁶ operations
Operating temperature-20 ~ 55°C
Storage temperature-35 ~ 75°C
MountingDIN rail mounting
Degree of protectionIP44 (front) / IP20 (terminals)
Overvoltage categoryIII
Pollution degree2
Dimensions90 x 18 x 64mm