LINETRAXX® RCMA423

交直流敏感型剩余电流监视仪RCMA423被设计用于监视接地电源系统（TN和TT系统），用于平滑直流故障电流或剩余电流连续大于零的地方。这些特殊的负载包含六脉冲整流器或单通道平滑整流器，如变频器、电池充电器、带变频驱动的施工现场设备。也通过RCMA423可以监视单相线的电流。

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)

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)

可选配件 LINETRAXX® RCMA423

Measuring current transformers

Connection cable measuring current transformer – RCMA423-D

Accessories

Type	Art. No.
Mounting clip for XM420 enclosure	B98060008
Snap-on mounting W20…, W35…	B98080501
Snap-on mounting W60…	B98080502

Type	Response range IΔn	Frequency range	Supply voltage US*	Art. No.**
RCMA423-D-1	30 mA…3 A	0…2000 Hz	DC 9,6…94 V / AC 16…72 V, 42…460 Hz	B74043023 B94043023
RCMA423-D-2	30 mA…3 A	0…2000 Hz	DC 70…300 V / AC 70…300 V, 42…460 Hz	B74043025 B94043025

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

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