Audited Supplier
EKL4
Power
Protection
ISO9001:2000, VDE, CCC
All- packaged Type
High Voltage
1 Uint
Power Distribution Cabinet
Plastic
IP43
RC
Ampower
Foam and Cardboard Box
90.5mm*42.5mm*82.5mm(length, width, depth)
China
Product Description
Accurate movements and strong anti-interference ability:
The signal is not affected by line excitation inrush current, high-order harmonics, current fluctuations, especially the distributed capacitance bypass of the cable.
Simple fault section search:
The indicator is directly installed on the distribution line, and the fault section can be easily located by whether two adjacent indicators act or not.
Automatic/Manual Reset:
The indicator automatically returns to its normal position after the fault state is triggered according to the factory set reset time, or it can be manually reset.
Application scope: SF1-2 type is used in 6-110kV distribution boxes, ring main units, box transformers and other cable systems
Technical parameters:
Applicable voltage level: 6~35kV: Applicable load: 0~600A
Applicable wires: 25mm ² ≤ S ≤ 400mm ²:: Action response time: 0.06S ≤ T ≤ 3S
Action reset time: 10s, 6, 12, 24 hours optional:: Operating environment temperature:- 40ºC~80ºC
Action criteria:
It ≥ 150A, It is the starting value of the sudden bright current
△ I ≥ 0.5I0, AI is the current change rate, I0 is the line current before short circuit: I=0, I is the current after the line fault
0.06S ≤ △ T ≤ 3S, △ T is the time of sudden change in current
Main functions:
Short circuit current alarm indication:
The short-circuit current sensor detects the incoming line of a running high-voltage cable online. When the line current reaches or exceeds the set value of the short-circuit current (which can be adjusted before leaving the factory according to user requirements), the short-circuit sensor sends an alarm signal through optical fiber transmission to the host. After receiving this signal, the host generates a corresponding alarm indicator signal and can also send the signal to the main control system.
Grounding alarm indication:
This system uses grounding sensors to detect the grounding current of user cables. When the current in the grounding line reaches or exceeds the grounding current alarm value (which can be adjusted according to user requirements before leaving the factory), the grounding sensor sends an alarm signal to the main control system
Automatic reset system:
When the indicator generates an alarm signal and there is no manual reset within the action reset time, the indicator will automatically reset
Manual reset:
After the indicator generates an alarm, it can be manually reset by pressing the clear button on the indicator host panel to release the alarm.
Testing:
This system can self check its functionality by pressing the clear button on the panel. Press the clear button on the panel continuously for 2 seconds, and the machine will enter self-test mode. The indicator lights on all panels will flash, and the output relay will be engaged, indicating that the working status is normal.
