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Alle nieuwe producten

NC020

MULTIFUNCTION PROTECTION FOR BANK CAPACITORS/HARMONIC FILTERS,
UNDER/OVERVOLTAGE

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NC020

In recent years the harmonic producing part of total load has increased continuously because of the massive usage of power electronic in all the voltage levels. Thyristor convertors, frequency convertors, thyristor switches and static var compensator, such as thyristor controlled reactors (TCR) and thyristor switched capacitors (TSC), are commonly adopted in industrial applications and power utilities.
Filter capacitor banks consist of capacitor bank and series connected air core. Their task is to absorb the harmonic currents generated by loads and all above mentioned power electronic devices.
The aim of NC020 is to provide a reliable and cost effective solution for such an application granting capacitor bank safe operations.

Applications
• Bank capacitor / harmonic filter
Protection functions
• Neutral unbalance overcurrent with inherent unbalance compensation (46N)
• Phase overcurrent (50/51)
• RMS phase overcurrent (50/51(RMS))
• Peak overvoltage (59H)
• Breaker failure (BF)
• Discharge Timer (TD)
Monitoring and control functions
• CB diagnostic
• Cold Load Pickup (CLP)
• Digital Fault recording (DFR)
• Fault and event logging (SER & SFR)
• Self-test
Hardware
• 3 binary inputs + 4 output relays + 8 LEDs
• Auxiliary power supply 24-230 Vac/dc
• Flush mounting
• Nominal current 1/5 A selectable by DIP-switch
• RS485 port
Communication
• Modbus RTU RS232 protocol
• Modbus RTU RS485

  • toepassing BANK CAPACITOR
  • ANSI protectie Phase overcurrent (50/51)|Breaker failure (BF)|Neutral unbalance overcurrent with inherent unbalance compensation (46N)|RMS phase overcurrent (50/51(RMS))|Peak overvoltage (59H)|Discharge Timer (TD)

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