RCM1000V-75 Residual Current Monitor

RCM1000V-75 Residual Current Monitor for AC-currents

Residual Current Monitor RCM1000V RCM100V monitors residual currents in grounded power supply systems. Used as a current relay it monitors AC- or pulsing DCcurrents for exceeding upper or lower limits.

Applied as current relays RCM1000V can among others monitor current in the neutral conductor. Nonlinear loads, e.g. switching power supplies in PC, printers or lights with EGC, cause harmonics in the neutral conductor: Even when the load is symmetric, the harmonics can lead to an overload in the neutral conductor. RCM1000V detect and report this overload.

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Features of RCM1000V-75 Residual Current Monitor

  • Monitoring of residual currents
  • 2 limits for alarm and trip
  • Monitoring of current, 2 x under- or overcurrent or windows
  • Measuring range 0,003 … 9,999 A
  • Setting range 0,010…9,999 A
  • Display can be scaled
  • Test-button and automatic test every 24 hours
  • Input for current transformer STWA3D with monitoring of transformer
  • Start-up delay to suppress alarms when switching on
  • 4 digits bright LED display for measured values and programming
  • LEDs for alarms, state of relays, and units
  • Limit, hysteresis, switching deal,y and switch off delay individually programmable
  • The function of relays (NC-, or no-mode) and interlocked switching or auto reset programmable
  • Universal supply voltage AC/DC 24-240 V
  • Housing for DIN-rail mount, 70 mm wide, mounting height 55 mm

Specification of RCM1000V-75 Residual Current Monitor

  • Rated supply voltage:  AC/ DC 24V – 240V, < 1,5W, < 5 VA, DC 20,4 – 297 V, AC 20-264 V 50 …500 Hz
  • Current relay ( program 2 only): 0,010 A … 9,999 A 10%…25% ，± 2%, ± 3 digit，± 10%, ± 3 digit
  • Insulation: 4000 V，AC 300 V III2
  • EMC tests： EN 61000-6-3，EN 61000-4-4 ± 4 kV, pulse 5/50 ns, f = 5 kHz, t = 15 ms, T = 300 ms IEC 61000-4-5 ± 2 kV, IEC 61000-4-2 ± 3,8 kV discharge contact, ± 6 kV discharge air
  • Operation environment: -20…+65 °C

 

 

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