Recloser Control Box-Feeder Terminal Unit
The feeder terminal unit(FTU) is a new HV switch control device of control cabinet enclosures equipped with both the imported DSP high-speed sampling chips and the high-performance ARM chips, and can fast and stably finish the monitoring on the switch.
Industrial feeder remote terminal unit by our electric power equipment company has such functions as the protection, measuring, controlling, monitoring, communication, remote control, and so on and features high integration level, flexible configuration, and user-friendly interface. Electrical control cabinet are widely applied to the radiant and ring network power supply systems.
FTU outdoor control electrical control box can help the electrical distribution cabinet systems identify transient and permanent line faults. Outdoor control box eliminate the impact of transient line faults automatically, isolate the permanent fault segments to avoid prolonged power failure in a large area, and automatically recover the power supply in fault-free areas, so as to realize the automation of power distribution network in an economical and practical way.
Recloser Control Box-feeder Remote Terminal Unit Key Functions
S/N Functions Remarks
1. Three section protection Each protection can be vote back independently
2. Over-current count protection Failure time count, output after meeting the number of
times, output mode is optional
3. Zero-sequence protection Output options: exit, alarm and tripping
4. Pre - voltage fault protection Protection can be accelerated when combined at fault
point
5. Post-reclosing acceleration Vote back independently
6. Constant time-lag The protection time is fixed
7. Inverse time limit Multiple protection curves optional
8. Ring network protection Hardware needs to configure double PT
9. Event Log The recording time is exactly millisecond
10. Status enquiry The main content is remote recloser controller and remote
metering
11. Remote programmable Remote input support programmable
Recloser Control Box-Feeder Terminal Unit Communication Protocols
S/N Protocols Remarks
1. IEC balanced
2. IEC unbalanced
3. IEC
4. DNP3.0 Now support level 3
5. Modbus
Recloser Control Box-feeder Remote Terminal Unit Technical Parameters
No. Items Rated value Remarks
1. Operating ambient temperature -40 ~ +85℃
2. Environmental relative humidity 10 ~ 100%
3. Maximum absolute humidity 35g/m3
4. Atmospheric pressure 66~ 108kPa
5. Working voltage AC220V±20%
6. Working voltage frequency 50HZ±5HZ
7. Power consumption ≤15W
8. Protective exit time <35ms Protect inherent action time at 1.5 times fixed value
9. Insulation impedance >100MΩ/ DC500V 1. External terminal to ground
2. Power circuit to ground
3. On-off input circuit to ground
4. Output circuit to ground
5. AC circuit to ground
6. AC circuit and power circuit
7. Between on-off input circuit and output circuit
10. Power frequency withstand voltage 2k Power circuit to ground
500 On-off input circuit to ground
500 Output circuit to ground
2k AC circuit to ground
2k AC circuit and power circuit
1500 Between on-off input circuit and output circuit
11. Impulse withstand voltage 5k Power circuit to ground
1k On-off input circuit to ground
1k Output circuit to ground
5k AC circuit to ground
5k AC circuit and power circuit
1k Between on-off input circuit and output circuit
Recloser Control Box-feeder Remote Terminal Unit Characteristic Functions
Feeder terminal unit is small in size and large in quantity. FTU electrical control cabinet is equipped with a transmitter for direct AC sampling. It is resistant to high temperature and cold and is suitable for outdoor harsh environments.
Unlike the scada remote terminal unit, the amount of data collected by FTU electronic recloser controller box is small, the requirement of communication rate is low, and the requirement of reliability is high.
FTU outdoor recloser controller box can be manufactured by a high-performance single-chip microcomputer. In order to adapt to the harsh environment, industrial chips that can work at 75 ℃ shall be selected, and they shall be protected against lightning, rain and moisture through appropriate structural design.
Recloser Control Box-feeder Remote Terminal Unit Application
At present, feeder terminal units power recloser controller box as one popular type of distribution electrical box have been widely deployed in column switches, ring network cabinets, switching stations, power recloser controller boxes, and other places on the distribution network line to realize the "three remote" automation functions of remote signaling, telemetry and remote control of remote primary equipment.
As an information and data communication tool, a computer network provides a powerful communication means for industrial electrical cabinet and provides a reliable basis for realizing the networked control of distribution automation system devices. Fieldbus technology and GPRS wireless communication technology inject new vitality into the implementation of feed automation. Driven by network, communication and other information technologies, distribution automation is developing from spontaneous Island automation to unified and systematic comprehensive automation.
Gopower is a professional electric power equipment ltd, we provide auto recloser, feeder terminal and etc. For more information, please feel free to contact us!
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