Cabletroll 3500 is suitable in:
– 10-24 kV distribution networks
– Isolated-neutral networks
– Compensated networks (Petersen-coil)
– Resistance-earthed networks
The indicators are placed at substations, ringmain units or any installation where you have a cable termination and access to capacitive test points for measuring the phase voltage.
Upon detecting a fault in the cable, the indicator gives off an intermittent red or green light flash (LED). One LED flashing indicating an earth-fault and both LED flashing indicating a short-circuit fault. External indication units for mounting outside the station can be supplied as an option. The colors of the LED will also indicate direction to the fault location for earth faults with reference to the bus bar where the indicator is situated.
|
Parameter name |
Value |
|
|
Network voltage (kV) |
6 - 35 |
|
|
Fault detection |
Earth fault, adjustable: 1) 10; 20; 40 or 80 A 2) 40; 80; 120 or 160 A Short-circuit fault: selectable at 400; 600; 800 or 1000 A | |
|
Signaling reset |
Automatic, by return of voltage Timer: 1; 2; 4 or 8 ore 2; 6; 8; 12; 16 or 24 hours Manual, with test/ reset button Remote: SCADA relay closed contact | |
|
Power supply |
Lithium battery |
3V; 1,2 Ah It is recommended the replacement of the batteries every 15-20 operating years |
|
External supply |
1) 24 - 60 Vc.a. , 50 ... 60 Hz, ± 10% 0,3 VA and battery 2) 12 V -110 Vc.c. ± 10% and battery | |
|
Operation and storage temperature range (OC) |
-30...+70 |
|
|
Weight (kg) |
1,1 |
|
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