SIA-C self-powered or dual-powered overcurrent and earth fault relay for standard /5 and /1 CTs
The SIA-C overcurrent and earth fault protection relay for secondary distribution MV switchgear. It is powered from standard current transformers /5 or /1, with an optional 24–230 V AC/DC supply.
- Power supply
- self-powered from standard CTs /5 or /1 + opt. 24–230 V AC/DC
- Self-powering threshold
- 0.075·In (3 phases), 0.16·In (1 phase)
- Inputs/outputs
- up to 10 inputs and 7 outputs
- Communication
- USB, opt. RS485 and Ethernet
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The self-powering threshold is 0.075·In with 3-phase supply and 0.16·In with 1-phase supply. The relay has up to 10 inputs and 7 outputs, communication via USB, with optional RS485 and Ethernet. The metal case is made in withdrawable and fixed versions. The memory stores up to 1024 events and COMTRADE waveforms.
Technical specifications
| Power supply | self-powered from standard CTs /5 or /1 + opt. 24–230 V AC/DC |
|---|---|
| Self-powering threshold | 0.075·In (3 phases), 0.16·In (1 phase) |
| Inputs/outputs | up to 10 inputs and 7 outputs |
| Communication | USB, opt. RS485 and Ethernet |
| Version | withdrawable and fixed, metal case |
| Recording | up to 1024 events and COMTRADE waveforms |
Request a price and lead time
SIA-C self-powered or dual-powered overcurrent and earth fault relay for standard /5 and /1 CTs. 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 current transformers power SIA-C?
Standard CTs /5 or /1, with an optional 24–230 V AC/DC auxiliary supply.
What is the self-powering threshold of the relay?
0.075·In with 3 phases and 0.16·In with 1 phase.
What case versions are available?
A metal case in withdrawable and fixed versions.
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