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|Material:||Stainless Steal And Exposy Resin||Voltage Grade:||6-69kv|
|Frequency:||50 Hz||Power Source:||Taking Power Through The Line And Built-in Lithium Battery Of 3.6V|
|Long Time Withstand Current:||630A||Measurement Accuracy:||0 ~ 600A, ± 3A Or 3%|
cable fault indicator,
wiring fault detector
This kind of device is applied to the overhead power distribution network automatic system from 6KV to 69KV,is used to improve the safe and reliable operating performance through centralized monitoring the current, temperature and fault condition on the power distribution circuit.The fault indicator is used for indicating of phase-to-phase and phase-to-earth faults by determining short circuit, over-current and power features to detect faults and provide a local light indication. In addition, the indicator also has current measurement and wireless data communication capabilities, by sending the fault signal to FTU,in order to comply the function of the remote communication and the remote monitoring, to help operators to find the point of failure quickly and shorten the outage time and improve reliability.
The fault indicator installed on the overhead lines, which clipped on each phase so that to detect current and Voltage signal in this phase using itself clipped line structure. Through the low-power chip, it completes current calculation, short circuit, ground fault detection, and through built-in low-power RF modules achieves short distance wireless communication.
After the indicator is installed, the line current has been measured . When the current meet the characteristics of the fault, the indicator immediately sends the fault current and the fault information to the nearest terminal device by the RF, while triggering a flop and flash indication.
The lineman simple follows the flashing fault indicators all the way to the first non-flashing fault indicator, thereby identify the fault location.
The terminal device receives the fault information can further upload, so master station can get useful information and determine the fault zone according to the sub-station uploaded information.
System Composition Structure and detailed instruction
This system of device is composed of communicable fault passage indicator, data transmission unit, main station software and hardware.
|HR-1PC-T||alarm with red flag and flashlight, take electricity from power liner, radio frequency transmission|
|2||Detecting terminal Unit||HR-1PC-D||
Solar panel taking electricity, RF receiving fault information, GPRS/GSM remote transmission, each set can be equipped many sets of communicable FCI
Fault judge: identifying the Short-circuit fault , without testing the action value
reset way: Timing reset, manual reset , Intelligent automatic reset (A few minutes after Tripping, once the fault is cleared, reset itself upon the power return)
Handling charge: installing and removing while line is in charging condition
Rust and corrosion protection: Structure part is made of corrosion-resistant material
Surge suppression: to eliminate the wrong phenomenon of closing inrush current
The feature of the inverse: operating characteristics of maximum protection with the substation,to improve the action accuracy
Indication: Flashing and triggering a flip
Drop: Products from a height of 1 meter free fall to the concrete floor, no damage
The technical specifications:
Environment temperature: -35℃～70℃
Voltage grade: 7～69kV
Frequency: 50 Hz
Power source: taking power through the line and Built-in lithium battery of 3.6V, more than 10 years shelf life
Indication: three high-intensity red LEDs, 360-degree visibility
Total indicating time: >2000 hours
Cable diameter range: 5～40mm
Long time withstand current: 630A
Short time withstand current: 31.5kA/2s
Reset time: 1～48 hours Settable, ± 1%
Weight : ≤500g
Size : Ф75(MAX)×115mm
Shocks and vibrations
Power frequency magnetic field test
When continuous sine waveform, 100A / m magnetic interference applied to the indicator, it should work correctly.
b) Grip test
The downward pressure in the direction perpendicular to indicator spring is not less than 8 times the weight of the overall indicator .After fault indicator mounted ACSR, the transverse tension along a direction of aluminum wire is not less than 50N. So that, Indicator can withstand winds without falling from the line.
b)put the indicator into the bracket , and make the spring device to hook with the indicator spring, and rotate the spring device down firmly until after the indicator spring pulled position retractor can hook, then hook the spring with retractor and pull t he spring device out. And use the same method to the other side of the same end of the indicator spring to hook retractors.
c) Aligning the overhead lines pushed up and under the pressure of the overhead lines the indicator springs are divorced from the retractor spring and stucked overhead lines firmly.
Data Transmission Unit
Remote terminal uint is the data acquisition and communications forwarding device for power distribution network load monitoring, fault detection and positioning system, which can be set as the practical distribution terminal device of two remote (remote signaling, telemetry) functions in the distribution automation system via terminal parameter configuration, which can also be set as the traditional distribution terminal device of remote fault positioning system.
Remote terminal uint is to process and analyze the information from overhead indicator sent via wireless and then send the circuit load current and fault information to the main distribution network station via GSM short messages or GPRS communication.
Remote terminal uint is to receive the circuit fault information and circuit load operation information from overhead indicator installed in the circuit via wireless for analysis and compiling and then sends the information to main distribution network station via GPRS/GSM communications, to realize the online monitoring, fault detection and positioning functions of distribution network.
GSM (short messages) and GPRS (data) are mutually the standby mode, which are used to send the substation condition, circuit load current, indicator status and fault information to main distribution network station, to ensure the reliable transmitting of distribution network fault information.
The equipment program can be upgraded conveniently through master remote maintenance station.
The terminal can be in the two-remote or one-remote working mode by setting the intrinsic parameters of remote terminal uint.
Two-remote working mode: the terminal is online in real time, and the circuit load current and circuit status can be uploaded.
One-remote working mode: the terminal is online regularly; when the circuit breaks down, the terminal opens GPRS module power supply and sends the fault information to main distribution network station.
1. Wireless receiving: the fault point information and load current information sent by indicator are received via short-range wireless network mode.
2. GSM or GPRS forwarding: GSM (short messages) and GPRS (data) are mutually the standby mode, which are used to send the substation condition, circuit load current, indicator status and fault information to main distribution network station, to ensure the reliable transmitting of distribution network fault information.
3. Solar power supply: the solar power supply mode is applied, and the maintenance-free 8AH lead-acid battery or 12AH lithium iron phosphate battery is provided, with the working temperature range of both batteries of -35℃~75 ℃ and -20℃～75℃ separately.
4. Optional communication protocol: IEC870－5－101 protocol or 104 can be selected for the connection with the third party equipment to upload the fault and shift information.
5. Remote upgrade: the equipment program can be upgraded conveniently through master remote maintenance station.
6. Convenient maintenance: the parameter setting and equipment maintenance can be performed conveniently via wireless setting terminal.
7. Event recording: the device can record the maximum 500 pieces of SOE events, providing the rich data support for system fault analysis.
5. Technical parameters
|Dimension of repeater station||H×W×T=388mm×366mm×368mm|
|Weight of repeater station||6.75kg|
|Applied voltage grade||6~69kV overhead line|
|Circuit load current||0~630A|
|Rated working voltage||5.5V-7.5V|
|Overall power consumption||＜0.4W|
|Work time in rainy weather||≥10 days|
|Solar panel||Organic glass protection, amorphous silicon, and 30 years of service life|
|Power of solar panel||12W/10V|
|Quantity of cooperation indicators||12|
|GPRS module||E-GSM/GPRS 900/1800 dual band|
|Working temperature range (lead-acid battery)||-35℃～75℃|
|Working temperature range (lithium iron phosphate)||-20℃～75℃|