Wave Fault indicator JYL-FF

Overview

In the overhead network, for small current faults and ground faults, it often makes fault detection difficult. Wave Fault indicator JYL-FF is a high-precision and multi-functional fault indicator designed by Four-Faith Power for customer sites , Wave Fault indicator can realize high-speed wave recording of the ground electric field, trigger and capture the instantaneous current of small current ground faults, and the transient waveform signal of the ground electric field, and conduct accurate fault research and judgment and fault recovery through intelligent analysis of the collected current waveform and electric field waveform.

Feature and Benefit

High-speed wave recording and real-time sampling

4KHZ
Sampling frequency
Relying on high-performance small current self-collection technology, high-precision electronic current transformer and low-power micro-power wireless networking communication technology, complete real-time sampling and high-speed wave recording of line current and electric field
Three-phase synchronous time synchronization

100us

Provide an absolute time scale with an accuracy of 1us. Based on the GPS clock signal, when performing three-phase wireless synchronous timing, the accuracy is less than 100μs, ensuring the accuracy of zero-sequence current synthesis
Low power design

5A
Start current

The energy harvesting module adopts high magnetic permeability materials, combined with low power consumption system design, to ensure battery-free full-function operation when the primary current is 5A
Accurate measurements

±1%
Accuracy

Innovative open-close Rogowski coil type electronic current transformer, line current measurement accuracy ± 1%. Unaffected by the return line erected on the same pole, it can accurately identify line voltage drops and power outages

Technical Parameter

Parameter	Value
Short-circuit trip current (phase to phase)	50~1200A adjustable, 1A step, 150A default
Current record threshold	adjustable, 1A step, 5A default (≥5A)
Current wave upload threshold	adjustable, 1A step, 50A default
Electrical field drop record threshold	adjustable: 1% step, 30% default
Sampling frequency	4096Hz, 80 points per cycle
Upload wave number	4 waves in front of fault point and 8 waves after fault point
Indication reset	1）Remote reset through SCADA 2）Time reset: adjustable, 1 second step, 24h default, max 48h 3）Auto delay reset after repower, 1 second step, 30s default, only for permanent short circuit fault
Indicator Protection class	IP68
DCU Protection class	IP65
Internal type test	according to IEEE495-2007
Operation temperature range	-40~+70℃
Indicator battery	Lithium battery type 3.6V / 9Ah, replaceable
DCU battery	Rechargeable Lithium battery 12VDC/10Ah
Battery life	10 years
Indicator Weight	approx. 1kg
DCU Weight	< 5kg
Dimensions	Diameter: 114mm Height: 176mm
Current Accuracy	0A~300A: ±3A 300A~800A: ±1%
Cable diameter range	5mm~42mm
Blinking frequency	10 per minute, adjustable
Life time of LED flashing	2000h
Voltage range	5~38KV, can be customized by 44KV, 69KV and 110KV
Current withstand	31.5KA/4s
Max. load/fault current	1200A
Communication medium	Indicator to DCU: 433MHz DCU to SCADA: 2.5G/3G/4G
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