Earth fault and overload protection relay FANOX SIA-C

Earth fault and overload protection relay

FANOX SIA-C

The SIA-C is an OC&EF protection relay with self-powered and dual-powered (self-powering + auxiliary power) options.
The relay is self-powered using the operating current through three /5 (5VA) or /1 (2.5VA) standard current transformers fitted on the lines. These transformers are also used to obtain current measurements. Besides, SIA-C relay can be used with a universal auxiliary power supply 24-230 Vac/dc (24-220 Vdc (±20%) / 60-230 Vac (±15%)).
Internal Commissioning battery is optional. (Lithium battery: 20 years lifetime).
Metallic box with high electromagnetic compatibility level (EMC) and wide range of operating temperature.
The test menu allows the trip circuit to be tested before the transformation center is powered up.
There are 7 configurable LEDs and 1 bistable magnetic indicator (flag) that indicate the trip. The LEDs maintain their position even though the relay loses the supply.
Self-diagnosis of the relay status (WATCHDOG) through the configurable LEDs and outputs.
Low power consumption.
To allow communication, relays are provided with a front Micro USB Port and an optional remote communication RS485 port (Modbus RTU, DNP3, or IEC60870-5-103 protocol, selectable by general settings) on the rear side. An upcoming option is an ethernet RJ45 port (Modbus TCP protocol).
The SIA-C is provided with a trip output for the low-power coil (24 Vdc—135 mJ). A switch makes a single-phase trip or single/triple-phase trip available depending on the model.
Up to 10 configurable inputs and up to 7 configurable outputs.
The SIA-C is fitted with the demand of current (Load Data Profiling) with the following characteristics:
- Number of records: 168.
- Recording mode circular.
- Sampling rate (interval): configurable through communications 1-60 min.
The SIA-C is provided with non-volatile RAM memory to store up to 1.024 events and disturbance fault recordings (DFR20 fault reports and 10 oscillographic records in COMTRADE format). Thanks to its internal RTC (Real Time Clock), the SIA-C maintains date and time even without a power supply.
The oscillography is downloaded by a communications port. The SICom communications program allows the oscillography record to be downloaded and saved in COMTRADE format (IEEE C37.111-1991).
The installation and subsequent maintenance of external batteries is eliminated. The operating costs of the center are reduced.
Withdrawable and non-withdrawable mechanics are available by model list to fulfill all our customers' needs and make the installation easier.