Earth-fault and short-circuit indicator
Type EKS

The earth-fault and short-circuit indicator type EKS can be used in radial networks with one input and open-ring networks which are solidly earthed or low resistance earthed. The indication of short-circuits is done by one or three LEDs. Earth-faults are indicated by one LED . The connections between the short-circuit sensors and accordingly the earth-fault sensors to the display unit are done by cable. All sensors must be mounted on screened cables. The sensors are divisible and can be retrofitted on the cable. The display device is powered by an exchangeable lithium battery. Alternatively the display device can be connected to an auxiliary power supply.

The earth-fault and short-circuit indicator type EKS can be equipped with a second relay for a separate remote indication of earth-faults and short-circuits.

The earth-fault and short-circuit indicator type EKS consists of:

– One display unit for displaying the earth-fault and short-circuit
– Three sensors type SK for detecting short-circuits
– One sensor type SE for detecting earth-faults

The earth-fault and short-circuit indicator type EKS is available in two versions:

Type EKS 1.2: Short-circuit indication by one common LED for all three phases
Type EKS 3.2: Short-circuit indication by one LED for each of the three phases.

Both versions provide an earth-fault indication with one LED.

Order Data
Type EKS1.2 | panel-mounted 22.60.10
Type EKS1.2 | surface-mounted 22.65.10
Type EKS3.2 | panel-mounted 22.40.10
Type EKS3.2 | surface-mounted 22.45.10

Features and Benefits

Short-circuit: Five trip currents between 200 A and 1000 A
Earth-fault: five trip currents between 10 A and 160 A
Four response delays between 40 ms and 300 ms
LED indication
Passage of 2nd short-circuit by double blinking
Indication of permanent earth-faults by double blinking
Button to test the function of the display unit
Reset function:
– Manual by push button
– Time: four values between 1 h and 12 h
- Remote reset contacts – Optional: by recovering auxiliary power supply
– Optional: by recovering service current
Power supply:
– Lithium battery type AA 3.6 V
– Optional: 12-110V DC
– Optional: 115 / 230V AC
Contacts for remote monitoring
Panel-mounted version:
Optional: second relay for separate remote indication of earth-faults and short-circuits
Surface-mounted version:
Two on site configurable relays by DIP switch
Optional: third relay for remote indication of empty battery
Permanent or wipe contact type can be selected on site
Surface-mounted and panel-mounted housing
Optional: blinking lamp type BL4.1 / BL6 for outdoor indication


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