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 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.
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 control and remote
metering
11. Remote programmable Remote input support programmable
Control Box-Feeder Terminal Unit Communication Protocols
S/N Protocols Remarks
1. IEC60870-5-101 balanced
2. IEC60870-5-101 unbalanced
3. IEC60870-5-104
4. DNP3.0 Now support level 3
5. Modbus

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

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