{"product_id":"spau330-c1-aa-abb-spacom-earth-fault-and-overcurrent-relay","title":"SPAU330 C1-AA ABB SPACOM Earth-Fault and Overcurrent Relay","description":"\u003ch2\u003eABB SPAU330 C1-AA SPACOM Series Earth-Fault and Overcurrent Relay\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB SPAU330 C1-AA\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eSPAU330 C1-AA\u003c\/strong\u003e Earth-Fault and Overcurrent Relay, operates as a dedicated hardware component for directional\/non-directional earth-fault detection and overcurrent protection within 6-36 kV distribution networks. This numerical microprocessor-based hardware element samples primary currents and voltages through instrument transformers to execute deterministic trip decisions during power grid abnormalities.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSPAU330 C1-AA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eFinland \/ Sweden\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2 kg net\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e220 mm x 150 mm x 60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-10 to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eSupported via auxiliary supply: 80-265 V DC\/AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eABB Type Designation\u003c\/td\u003e\n\u003ctd\u003eVoltage \/ Earth-Fault Relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries Platform\u003c\/td\u003e\n\u003ctd\u003eSPACOM Family\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Frequency\u003c\/td\u003e\n\u003ctd\u003e50 Hz (AA configuration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Functions\u003c\/td\u003e\n\u003ctd\u003eDirectional\/Non-directional Earth-fault, Overcurrent, and Voltage monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eCurrent Transformer (CT) and Voltage Transformer (VT) inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003eHeavy-duty relay contacts for trip and alarm signaling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eRS-485 via SPA bus protocol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP20 (Cabinet mounted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control \u0026amp; Drive Backplane Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe computational architecture utilizes dedicated internal pathways to transmit digitized fault parameters, interacting with the substation bus through integrated backplane bus communication velocity licences. To maintain stability across high-density protection grids, the module runs continuous algorithmic checks over Profinet \/ EtherNet\/IP deterministic networks via external gateways or natively using the RS-485 SPA bus layer. The microprocessor maintains total firmware flash compatibility with existing SPACOM legacy networks, ensuring that high-speed disturbance logging and phase vector measurements are routed without packet drop or execution delays.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the SPAU330 C1-AA relay module be hot-swapped while the distribution feeder is carrying load?\u003c\/p\u003e\n\u003cp\u003eA: No, hot-swapping the internal protection assembly while the primary current transformer (CT) secondary circuits are live is strictly prohibited. Unplugging the hardware under load will open-circuit the CT secondaries, generating high voltages that can destroy the terminal block and present immediate physical risk to personnel.\u003c\/p\u003e\n\u003cp\u003eQ: How does the \"AA\" suffix configuration define the system frequency and auxiliary power range?\u003c\/p\u003e\n\u003cp\u003eA: The \"AA\" hardware variant specifies that the internal filtering and numerical processing algorithms are hardcoded and calibrated for 50 Hz power networks. Additionally, this designation equips the unit with a wide-range internal power supply board capable of running on any input from 80 to 265 V DC or AC.\u003c\/p\u003e\n\u003cp\u003eQ: What action does the relay take if the continuous internal self-diagnostics detect an error?\u003c\/p\u003e\n\u003cp\u003eA: Upon detecting a hardware or memory fault during self-testing, the internal Internal Relay Fault (IRF) watchdog contact changes state. This action blocks all automated trip outputs to prevent false tripping and flashes a dedicated fault code on the front-panel display.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the relay unit securely into the instrument panel cutout or designated cabinet rack slot, tightening all mounting hardware to prevent displacement from switchgear operating shocks. Wire the secondary sides of the external Current Transformers (CT) and Voltage Transformers (VT) to the rear screw terminal strips using a minimum wire size of 2.5 mm2. Install all RS-485 communication lines using twisted, shielded instrumentation cables. Terminate the shield drain wires exclusively at the central low-impedance substation ground bar inside the cabinet enclosure to neutralize induced electromagnetic fields and eliminate circulating ground loops. Ensure that the cabinet ventilation matches the -10 to +55 deg C thermal threshold under continuous operational load.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":43017120579674,"sku":"SPAU330 C1-AA","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/262.1.jpg?v=1773035389","url":"https:\/\/www.spareoil.com\/products\/spau330-c1-aa-abb-spacom-earth-fault-and-overcurrent-relay","provider":"SpareOil Automation","version":"1.0","type":"link"}