SIA-F feeder overcurrent and earth fault relay with auxiliary supply for SF6 switchgear
The SIA-F relay protects feeders and transformers in SF6 switchgear and metal-enclosed secondary distribution cubicles. It operates from an auxiliary supply of 24–230 V AC/DC.
- Power supply
- 24–230 V AC/DC
- Current inputs
- 4, for CTs /1 and /5
- Functions
- overcurrent, earth fault, zone selective interlocking ZSI (68)
- Communication
- micro-USB, RS485 (Modbus RTU or DNP3.0)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The relay has 4 current inputs for current transformers /1 and /5. It performs overcurrent and earth fault protection and zone selective interlocking ZSI (68). For communication there are micro-USB and RS485 with Modbus RTU or DNP3.0. The memory stores 200 events, 4 fault reports and a COMTRADE waveform record.
Technical specifications
| Power supply | 24–230 V AC/DC |
|---|---|
| Current inputs | 4, for CTs /1 and /5 |
| Functions | overcurrent, earth fault, zone selective interlocking ZSI (68) |
| Communication | micro-USB, RS485 (Modbus RTU or DNP3.0) |
| Recording | 200 events, 4 fault reports, COMTRADE waveform |
Request a price and lead time
SIA-F feeder overcurrent and earth fault relay with auxiliary supply for SF6 switchgear. 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
What power supply does SIA-F need?
The relay operates from an auxiliary supply of 24–230 V AC/DC.
Which current transformers does the relay work with?
The relay has 4 current inputs for CTs with a secondary current of /1 and /5.
What protection functions does SIA-F perform?
Overcurrent, earth fault and zone selective interlocking ZSI (68) for feeders and transformers.
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