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 unitby 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
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S/N |
Functions |
Remarks |
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Three section protection |
Each protection can be vote back independently |
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|
Over-current count protection |
Failure time count, output after meeting the number of times, output mode is optional |
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|
Zero-sequence protection |
Output options: exit, alarm and tripping |
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Pre - voltage fault protection |
Protection can be accelerated when combined at fault point |
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Post-reclosing acceleration |
Vote back independently |
|
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Constant time-lag |
The protection time is fixed |
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Inverse time limit |
Multiple protection curves optional |
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Ring network protection |
Hardware needs to configure double PT |
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Event Log |
The recording time is exactly millisecond |
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Status enquiry |
The main content is remote control and remote metering |
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Remote programmable |
Remote input support programmable |
Control Box-Feeder TerminalUnit Communication Protocols
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S/N |
Protocols |
Remarks |
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IEC balanced |
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IEC unbalanced |
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IEC |
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Now support level 3 |
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Modbus |
Control Box-feeder Remote Terminal Unit Technical Parameters
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Items |
Rated value |
Remarks |
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Operating ambient temperature |
-40 ~ +85℃ |
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Environmental relative humidity |
10 ~ 100% |
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Maximum absolute humidity |
35g/m3 |
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Atmospheric pressure |
66~ 108kPa |
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Working voltage |
AC220V±20% |
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Working voltage frequency |
50HZ±5HZ |
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Power consumption |
≤15W |
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Protective exit time |
<35ms |
Protect inherent action time at 1.5 times fixed value |
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Insulation impedance |
>100MΩ/ DC500V |
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Power frequency withstand voltage |
2k |
Power circuit to ground |
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|
500 |
On-off input circuit to ground |
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500 |
Output circuit to ground |
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2k |
AC circuit to ground |
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2k |
AC circuit and power circuit |
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1500 |
Between on-off input circuit and output circuit |
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Impulse withstand voltage |
5k |
Power circuit to ground |
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|
1k |
On-off input circuit to ground |
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|
1k |
Output circuit to ground |
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|
5k |
AC circuit to ground |
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|
5k |
AC circuit and power circuit |
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|
1k |
Between on-off input circuit and output circuit |
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