LINETRAXX® RCMA423

  • AC/DC sensitive measured value acquisition type B
  • Adjustable response values
  • For protection of persons, fire protection, plant protection

The AC/DC sensitive residual current monitor RCMA423 is designed for monitoring earthed power supply systems (TN and TT systems) where smooth DC fault currents or residual currents continuously greater than zero 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. Currents in single conductors can also be monitored by RCMA423.

The prewarning stage (50…100 % of the set response value IΔn2) allow to distinguish between prewarning and alarm. Since the values are measured with measuring current transformers, the device is nearly independent of the load current and the nominal voltage of the system.
 

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LINETRAXX® RCMA423
LINETRAXX® RCMA423
  • AC/DC sensitive measured value acquisition type B
  • Adjustable response values
  • For protection of persons, fire protection, plant protection

The AC/DC sensitive residual current monitor RCMA423 is designed for monitoring earthed power supply systems (TN and TT systems) where smooth DC fault currents or residual currents continuously greater than zero 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. Currents in single conductors can also be monitored by RCMA423.

The prewarning stage (50…100 % of the set response value IΔn2) allow to distinguish between prewarning and alarm. Since the values are measured with measuring current transformers, the device is nearly independent of the load current and the nominal voltage of the system.
 

Domande? Contattaci!

Caratteristiche

  • AC/DC sensitive residual current monitor Type B acc. to IEC 62020 and IEC/TR 60755
  • r.m.s. value measurement (AC+DC)
  • Two separately adjustable response values 30 mA…3 A
  • Frequency range 0…2000 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 behaviour 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)

Applicazioni

  • AC/DC sensitive residual current monitoring in earthed two, three or four conductor systems (TN and TT systems)
  • 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 single conductors de-energised under normal conditions (e.g. N and PE conductors)

LINETRAXX® RCMA423 Variante/i

TypeResponse range IΔnFrequency rangeSupply voltage US*Art. No.**
RCMA423-D-130 mA…3 A0…2000 HzDC 9,6…94 V /
AC 16…72 V, 42…460 Hz
B74043023
B94043023
RCMA423-D-230 mA…3 A0…2000 HzDC 70…300 V /
AC 70…300 V, 42…460 Hz
B74043025
B94043025

* Absolute values
**(B7… = push-wire terminal / B9… = screw-type terminal)

Accessori opzionali per LINETRAXX® RCMA423

Measuring current transformers

TypeInternal diameter (mm)Art. No.
CTUB101-CTBC20ø 20B78120010
CTUB101-CTBC20Pø 20B78120020
CTUB101-CTBC35ø 35B78120012
CTUB101-CTBC35Pø 35B78120022
CTUB101-CTBC60ø 60B78120014
CTUB101-CTBC60Pø 60B78120024
CTUB101-CTBC120ø 120B78120016
CTUB101-CTBC120Pø 120B78120026
CTUB101-CTBC210ø 210B78120018
CTUB101-CTBC210Pø 210B78120028

Connection cable measuring current transformer – RCMA423-D

TypeLength/mArt. No.
CTX-1001B98110080
CTX-2502,5B98110081
CTX-5005B98110082
CTX-100010B98110083

Accessories

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

Download per LINETRAXX® RCMA423

NomeTipoDimensioneLinguaTimestampD-/B-Numero
RCMA42x Dichiarazioni di conformità CE 88.7 KB 2022/08/1212.08.2022
RCMA423 Manuali di istruzioni 10.5 MB DE2023/12/1414.12.2023D00063
RCMA423 Manuali di istruzioni 10.5 MB EN2023/12/1414.12.2023D00063
RCMA423 Data sheet 362.9 KB DE2020/01/1010.01.2020D00063
RCMA423 Data sheet 332.7 KB EN2020/01/1010.01.2020D00063
RCMA423 Data sheet 334.5 KB ES2020/09/0404.09.2020D00063
RCMA423 Data sheet 530.3 KB ZH2019/05/1313.05.2019D00063
XM420-Schnittstellenoptionen Data sheet 264.1 KB DE2019/05/1313.05.2019
XM420 interface options Data sheet 223.5 KB EN2019/05/1313.05.2019D00051
RCMA423 Quickstarts 510.8 KB DE2023/11/1616.11.2023D00063
RCMA423 Quickstarts 510.8 KB EN2023/11/1616.11.2023D00063
Changed variants of relays from goldplated to silver-plated contacts Technical information 166.3 KB EN2022/06/2727.06.2022
Geänderte Relaisvarianten von vergoldeten Kontakten auf versilberte Kontakte Technical information 166.3 KB DE2022/06/2727.06.2022