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JYL-FF Remote Overhead Line Wave Recording Fault circuit Indicator
The wave record fault circuit indicator type JYL-FF V2.0 is usually used in radial medium and high voltage overhead line distribution networks, which neutral points are ineffectively grounded.
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  The wave record fault circuit indicator type JYL-FF V2.0 is usually used in radial medium and high voltage overhead line distribution networks, which neutral points are ineffectively grounded. Short-circuit fault and single-phase earth fault can be detected and indicated by four ultra-bright blinking LEDs, which can be seen from 360º sight. The voltage and current wave can be recorded at all time, especially when the voltage drop or the current change suddenly. The wave records in the forms of IEEE Comtrade 1999 can also be transmitted to the SCADA by 2G/3G/4G networks.

The indicator can be mounted under live conditions with the help of an adapter and a hot stick. The parameters such as trip current, reset time, blinking interval, etc., can be read and adjusted by a bidirectional wireless tool. One DCU can link at most nine indicators.
The wave record fault circuit indicator type JYL-FF V2.0 consists of:

1 pcs DCU: transmission fault, load current value and wave record to SCADA
3 pcs indicators: fault detection and indication, and wave recording

 
parameter
Subject Value
Short-circuit Trip Current (Phase to
Phase)
50~1200A adjustable, 1A step, 150A default
Electrical filed drop record threshold Adjustable: 1% step, 30% default
Current record threshold adjustable, 1A step, 5A default (≥5A)
Current wave upload threshold adjustable, 1A step, 50A default
Indication Unit Reset 1. remote reset through SCADA system
2. time reset: adjustable, 1 second step, 24h default, max. 48h
3. Auto delay reset after repower, 1 second step, 30s default
 max 5min, only for permanent fault
Protection Class IP68
Internal Type Test According to IEEE495-2007
Operation Temperature Range -40~+70℃
Indicator Battery Lithium battery type AA 3.6V / 9Ah, replaceable
Battery Life  10 years
Indicator weight approx. 1kg
DCU weight <5kg
Dimensions Diameter: 114mm
Height: 176mm
Accuracy 0A~300A ±3A
300A~800A ±1%
Cable Diameter
Ranges
6mm~42mm
Blinking Frequency 10 per minute, adjustable
Max. load/fault current 1200A
Voltage range 5~38KV, can be customized to 44KV, 69KV and 110KV
Current withstand 31.5KA/4s
Communication 433MHz from indicators to DCU
2.5G/3G/4G from DCU to SCADA
Communication Protocol Indicator to DCU: private                                   
DCU to SCADA: IEC101, IEC104, DNP3.0,Modbus
Waveform file format COMTRADE 1999, including Ua, Ub, Uc, Ia, Ib, Ic, Io
 
 
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