SEL-787L — line differential protection for short lines and MV feeders
SEL-787L is an economical line differential protection terminal for short lines, important MV feeders and distributed generation connections. The terminal also includes directional overcurrent protection, arc protection, fault location and detection of high-impedance faults.
- Inputs
- conventional CTs/VTs or low-energy sensors (LEA)
- Functions
- line differential protection, directional overcurrent, arc protection, fault location, conductor break
- Protocols
- IEC 61850 Ed.2.1, IEC 60870-5-103, PRP, HSR, Modbus, DNP3
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The terminal works with conventional CTs and VTs or low-energy sensors (LEA) and monitors conductor breaks. Protocols are IEC 61850 Ed.2.1, IEC 60870-5-103, PRP, HSR, Modbus and DNP3. PRP and HSR give seamless redundancy of the substation Ethernet network.
Technical specifications
| Inputs | conventional CTs/VTs or low-energy sensors (LEA) |
|---|---|
| Functions | line differential protection, directional overcurrent, arc protection, fault location, conductor break |
| Protocols | IEC 61850 Ed.2.1, IEC 60870-5-103, PRP, HSR, Modbus, DNP3 |
Request a price and lead time
SEL-787L — line differential protection for short lines and MV feeders. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8536 49 00 90 |
|---|---|
| HS, 6 digits | 8536 49 |
| CN (EU) | 8536 49 00 |
| HTSUS (USA) | 8536 49 00 80 |
| China customs tariff | 8536 49 00 90 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
Which facilities is the SEL-787L intended for?
Short lines, important MV feeders and distributed generation connections. The main protection is longitudinal differential.
Can low-energy sensors be connected?
Yes, the terminal works with conventional CTs/VTs or with LEA low-energy sensors.
Which communication protocols does the terminal support?
IEC 61850 Ed.2.1, IEC 60870-5-103, Modbus and DNP3. Network redundancy is provided through PRP and HSR.
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