Circutor RGU-10 - CONNECTING THE DEVICE IN POSITIVE SAFETY; Connection with undervoltage coil

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Page 19
The RGU-10/ RG5-10C allow the display and setting of all required parameters to complete the earth leakage
protection adjustment with pre-alarm and communications.
PARAMETER UNIT
Preset pre-alarm trip delay
mS / S
Sensitivity of pre-alarm in % I
∆
N
%
Pre-alarm relay contact status.
+ (contact 6-5 NA) / nothing (contact 6 - 5 NC)
+ (contact 4-5 NC) / nothing (contact 4 - 5 NA)
Operating frequency (*)
Hz
Peripheral No. (*)
-
Baud rate (*)
Bauds
Type of parity (*)
-
(*) RGU-10C only
TROUBLESHOOTING OR REASONS FOR TRIPPING
POOR TOROID CONNECTION TRIP. After a certain time the equipment will carry out a test to detect the presence
of the sensor or associated earth leakage transformer. If it does not detect either of the above, the LCD and LED will
be red. Also the "ERRt" error message will permanently appear on the LCD. A short-circuit in the transformer
secondary will also be detected as an error. When this error is detected, the correct connection with the earth leakage
transformer has to be ensured and a RESET made to re-establish proper working. If the transformer is detected
again, normal status is returned and the error message disappears.
PRE-ALARM TRIP. In the event of the defaults current intensity exceeding the preset pre-alarm threshold, the yellow
will come on, the green backlit LCD will show the leakage level and the pre-alarm output relay will be activated. In
automatic mode (REC) when the pre-alarm situation is removed, normal status is resumed (LED and signal relay). In
manual mode, the equipment has to be RESET to unblock the pre-alarm.
FAULT TRIP. When the equipment is tripped by a current fault, the red and yellow LED comes on and the backlit
LCD is red. For current from the last cycle which tripped the relay is displayed. To reconnect press RESET to return
to the initial status.