External Earth-Fault Monitoring (With Summation Current Transformer) - Siemens SIMOCODE pro System Manual

Motor management and control devices

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Table of Contents

Monitoring functions

External earth-fault monitoring (with summation current transformer)

Here you can set the response of SIMOCODE pro to an external earth fault:

See also "Tables of responses of SIMOCODE pro" in

information".

Current from

Summation current

transformer/

Earth-fault module

Fig. 5-2: "Earth-fault Monitoring" function block

Table 5-2: "External earth-fault monitoring" response

1) Further delay of the summation current transformer delay

If the response is set to "Signaling" the "External earth fault" event will be

generated in the case of an earth fault.

If the response is set to "Warning", the "Warning external earth fault" event

will be generated in the case of an earth fault.

Unless deactivated, this function is always active, independent of whether

the motor is running or not (operating state "ON").

Earth-fault monitoring

Internal earth fault

External earth fault

0 - 25.5 s (0.5)

Chapter "Important

Event "External

earth fault"

Response/delay

See Table 5-2

Event "Warning

external earth fault"

SIMOCODE pro

GWA 4NEB 631 6050-22 DS 03