LINETRAXX® CME420

The CME420 series current relays monitor undercurrent and overcurrent in AC systems as well as the current between two threshold values (window discriminator function). The currents are measured as r.m.s. values (AC). The currently measured value is continuously shown on the LC display. The measured value required to trigger the alarm relay is stored. Due to adjustable delay times, installation-specific characteristics, such as device-specific making currents, short-time current changes etc. can be considered. Current measurement is possible either directly or indirectly via standard current transformers (x/5 A). External supply voltage is required.

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The CME420 series current relays monitor undercurrent and overcurrent in AC systems as well as the current between two threshold values (window discriminator function). The currents are measured as r.m.s. values (AC). The currently measured value is continuously shown on the LC display. The measured value required to trigger the alarm relay is stored. Due to adjustable delay times, installation-specific characteristics, such as device-specific making currents, short-time current changes etc. can be considered. Current measurement is possible either directly or indirectly via standard current transformers (x/5 A). External supply voltage is required.

Questions? Contact us!

Features

Undercurrent and overcurrent monitoring in AC systems 0.1…16 A
Indirect current monitoring with standard current transformers x/5 A
Transformation ratio n allows adaptation to all standard current transformers x/5 A
Different monitoring functions selectable < I, > I or < I/> I
Start-up delay, response delay, delay on release
Adjustable switching hysteresis
r.m.s. value measurement (AC)
Digital measured value display via multi-functional LC display
LEDs: Power On, Alarm 1, Alarm 2

Measured value memory for operating value
Continuous self monitoring
Internal test/reset button
Two separate alarm relays (one changeover contact each)
N/C or N/O operation and fault memory behaviour selectable
Password protection for device setting
Sealable transparent cover
Two-module enclosure (36 mm)
Push-wire terminal (two terminals per connection)
RoHS compliant

Applications

Current consumption of motors, such as pumps, elevators, cranes
Monitoring of lighting circuits, heating circuits, charging stations
Monitoring of emergency lighting
Monitoring of screw conveyors, e.g. in sewage plants
Dust removal in wood working