Feeder Terminal Unit (FTU)
The Feeder Terminal Unit (FTU) is specifically developed for the monitoring and protection of pole-mounted switches within 10kV distribution networks. It offers comprehensive fault detection, protection control, and communication capabilities (upon configuration with a communication module). The FTU is designed to be paired with switches installed at the utility-customer demarcation point on 10kV overhead distribution lines and suitable branch lines. When combined with a pole-mounted switch and voltage transformer, this integrated system can automatically clear single-phase ground faults and isolate interphase short-circuit faults on the controlled branch line.
| Input working voltage | AC220V (*) |
| Input working voltage frequency | 50Hz |
| Allowable fluctuation range of input working voltage | ±15% |
| Power consumption | <20VA |
| Rated voltage | DC24V |
| Output voltage (closing/opening operation) | DC24V (*) |
| Input range of phase current sampling | 0-12A (secondary value) |
| Input range of zero-sequence current sampling | a. Direct sampling (0-6A) b. Self-generated (0-10A) and both are secondary values |
| Sampling error of phase current | ±0.5% |
| Sampling error of zero-sequence current | a. Direct sampling (±0.2%) b. Self-generated (±0.5%) |
| Rated value of zero-sequence voltage sampling | 2.17V (electronic transformer) |
| Fixed value of overcurrent protection for phase-to-phase short circuit | 0.5-10A (step length 0.01A) |
| Action time of overcurrent protection for phase-to-phase short circuit | 0-99s (step length 0.01s) |
| Current fixed value of single-phase grounding protection | a. Direct sampling (0.01in-0.95in) b. Self-generated (0.01in-12in) 0.01A both step lengths are 0.01A |
| Fixed value of time for single-phase grounding protection | 0-7200s (step length 0.01s) |
| Remote control distance of remote controller | ≤50 m |
Other working voltages need to be stated in advance.
- Temperature: -40℃ to 85℃
- Environment: Outdoor, in areas free from flammable or explosive hazards and chemical corrosion.
Note: Contact HCRT if a different condition is required. We offer customized solutions as well.