LINETRAXX® RCMA423AS

The AC/DC sensitive residual current monitor RCMA423AS is designed for use in earthed systems (TN and TT systems) where DC and AC fault currents may occur. These are in particular loads containing six-pulse rectifiers or one way rectifiers with smoothing, such as converters, battery chargers, construction site equipment with frequency-controlled drives.

Two separately adjustable response ranges allow to distinguish between prewarning (IΔn1 = 50…100 % of the set response value IΔn2) and alarm (IΔn2).
Since the values are measured with measuring current transformers, the RCMA423AS is nearly independent of the nominal voltage and the current of the system being monitored.

Questions? Contactez-nous!

LINETRAXX® RCMA423AS
LINETRAXX® RCMA423AS

The AC/DC sensitive residual current monitor RCMA423AS is designed for use in earthed systems (TN and TT systems) where DC and AC fault currents may occur. These are in particular loads containing six-pulse rectifiers or one way rectifiers with smoothing, such as converters, battery chargers, construction site equipment with frequency-controlled drives.

Two separately adjustable response ranges allow to distinguish between prewarning (IΔn1 = 50…100 % of the set response value IΔn2) and alarm (IΔn2).
Since the values are measured with measuring current transformers, the RCMA423AS is nearly independent of the nominal voltage and the current of the system being monitored.

Questions? Contactez-nous!

Caractéristiques

  • AC/DC sensitive residual current monitor Type B acc. AS/NZS 2081:2011
  • r.m.s. value measurement (AC+DC)
  • Two separately adjustable resp. values 100 mA...5 A
  • Frequency range 0...1000 Hz
  • Start-up delay, response delay and delay on release
  • Digital measured value display via LC display
  • Measured value memory for operating value
  • CT connection monitoring
  • LEDs: Power On, Alarm 1, Alarm 2
  • Internal/external test/reset button
  • Two separate alarm relays (one changeover contact each)
  • N/O or N/C operation and fault memory selectable
  • Continuous self monitoring
  • Multi-functional LC display
  • Password protection for device settings
  • Sealable transparent cover
  • Push-wire terminal (two terminals per connection)
  • Two-module enclosure (36 mm)

Applications

  • AC/DC sensitive residual current monitoring in earthed two, three or four conductor systems (TN and TT systems)
  • AC/DC sensitive residual current monitor for mining according to AS/NZS 2081:2011
  • Monitoring of variable-speed drives, UPS systems, construction site equipment, printing machines, battery systems, laboratory equipment, wood working machines, MF welding systems, furniture industry,medical electrical equipment, etc.
  • AC/DC sensitive current monitoring of, in the normal case, de-energised single conductors (e.g. N conductors)

LINETRAXX® RCMA423AS Variante(s)

TypeVoedingsspanningResponse valueArt. Nr.
RCMA423AS-D-1AC 16…72 V, 42…460 Hz / DC 9.6…94 V100 mA…5 A / 0.....1000HzB 7404 3045
RCMA423AS-D-1AC 70...300 V, 42 ...460 Hz / DC 70....300 V100 mA…5 A / 0.....1000HzB 7404 3046

Accessoires en option pour LINETRAXX® RCMA423AS

TypeArt. No.
Mounting clip for screw mounting (one piece per device)B98060008
Mounting frame XM420B990994 

Téléchargements pour LINETRAXX® RCMA423AS

NomTypeTailleLangueHorodatageD-/B-Numéro
RCMA42x Déclarations de conformité CE 88.7 Ko 2022/08/1212.08.2022
RCMA423AS Notices 375.7 Ko EN2022/06/0909.06.2022D00157
Changed variants of relays from goldplated to silver-plated contacts Informations techniques 166.3 Ko EN2022/06/2727.06.2022
Geänderte Relaisvarianten von vergoldeten Kontakten auf versilberte Kontakte Informations techniques 166.3 Ko DE2022/06/2727.06.2022