Model Number:
The CFT-211 Distribution Automation Feeder Terminal Unit features a "dome-shaped" design, providing a high level of protection and making it easy to install and maintain. It uses standard aviation connectors for its interfaces, ensuring stable signal transmission and interface compatibility
This terminal integrates a voltage-time based local feeder automation function and is equipped with phase-to-phase short circuit protection, ground fault protection, and three-phase automatic reclosing capabilities, which significantly enhance the automation level of the power grid and improves fault recovery efficiency.
Specification
|
Parameter Category |
Parameter |
|
Operating Power Supply |
AC 220V ± 20% |
|
Nominal Voltage Input |
Phase Voltage: AC 100V, AC 220V; Zero Sequence Voltage: AC 100V (or AC 6.5V) |
|
Nominal Current Input |
Phase Current: AC 1A (or 5A); Zero Sequence Current: AC 1A |
|
Remote Signal Power Supply |
DC 24V |
|
Operating Power Supply |
DC 24V |
|
Communication Power Supply |
DC 24V |
|
Total Power Consumption |
≤ 20VA (excluding communication module and backup power) |
|
AC Voltage |
1.2 times rated voltage: Continuous operation |
|
AC Current |
2 times rated current: Continuous operation; 20 times rated current: Allowed for 1 second |
|
Voltage Measurement Accuracy |
Phase Voltage ≤ 0.5% (Class 0.5); Zero Sequence Voltage: 0.5% (Class 0.5) |
|
Current Measurement Accuracy |
Phase Measurement ≤ 0.5% (≤ 1.2In); Phase Protection Value ≤ 3% (≤ 10In); Zero Sequence Current: Class 0.5 |
|
Power Measurement Accuracy |
Active and Reactive Power Accuracy ≤ 1% (Class 1) |
|
Energy Collection Accuracy |
Active Energy: Class 1; Reactive Energy: Class 2 |
|
Frequency Measurement Accuracy |
≤ ±0.02Hz |
|
Contact Capacity |
AC 250V/5A, DC 24V 16A, DC 80V/2A, or DC 110V/0.5A for resistive load |
|
Remote Control On/Off Pulse Width |
Adjustable from 5 to 10,000 ms |
|
Inherent Action Time for Short-Circuit Protection |
≤ 20ms |
|
Accuracy of Time Setting Value |
≤ 40ms |
|
Daily Error |
≤ 2s |
|
Protection Performance |
IP67 |
|
Ambient Temperature |
Operating Range (-40°C to +70°C); Resistant to magnetism, vibration, moisture, lightning, dust, and corrosion |
|
Mean Time Between Failures |
≥ 50,000 hours |
|
Remote Control Contact Lifespan |
100000 Times |