{"product_id":"abb-spau-140c-synchro-check-and-voltage-check-relay","title":"ABB SPAU 140C Synchro-Check and Voltage-Check Relay","description":"\u003ch2\u003eABB SPAU 140C Synchro-Check and Voltage-Check Relay\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB SPAU 140C\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eSPAU 140C\u003c\/strong\u003e Synchro-Check and Voltage-Check Relay, operates as a dedicated hardware component for synchronizing voltage conditions and supervising circuit breaker closing operations within ABB SPACOM protection and control systems.\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\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003eSPAU 140C\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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSynchro-Check and Voltage-Check Relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eSPACOM Protection Relay Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eSubrack \/ flush mounting case module configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-10 deg C to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Voltage\u003c\/td\u003e\n\u003ctd\u003e100 VAC, 110 VAC, 115 VAC, or 120 VAC configurable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuxiliary Power Supply\u003c\/td\u003e\n\u003ctd\u003e80 to 265 VAC\/DC or 18 to 80 VDC versions available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Difference Setting\u003c\/td\u003e\n\u003ctd\u003e0.1 to 0.8 x Un adjustable range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpper Voltage Level Setting\u003c\/td\u003e\n\u003ctd\u003e0.5 to 1.0 x Un adjustable range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Relay Contact Rating\u003c\/td\u003e\n\u003ctd\u003e250 VAC\/DC switching voltage, 5 A continuous current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric Test\u003c\/td\u003e\n\u003ctd\u003e2 kV, 50 Hz, 1 min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpulse Test\u003c\/td\u003e\n\u003ctd\u003e5 kV, 1.2\/50 us, 0.5 J\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation Resistance\u003c\/td\u003e\n\u003ctd\u003eGreater than 100 Mohm at 500 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eABB Industrial Control Interface Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe SPAU 140C integrates microprocessor-based voltage supervision logic for AC network synchronization tasks. It evaluates phase angle difference, voltage deviation, and frequency slip conditions before enabling breaker closing commands.\u003c\/p\u003e\n\u003cp\u003eFurthermore, the relay provides dual-stage synchro-check functions and voltage-check functions for live busbar and dead-line detection. The output relay contacts execute auxiliary switching actions after the configured synchronization conditions are satisfied.\u003c\/p\u003e\n\u003cp\u003eThe unit belongs to the ABB industrial protection platform family and supports serial communication integration for substation automation applications. Additionally, ABB relay engineering practices include backplane bus communication velocity management, Profinet \/ EtherNet-IP deterministic network concepts in related automation platforms, and firmware flash compatibility across supported control environments.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What electrical conditions does the SPAU 140C evaluate before breaker closing?\u003cbr\u003eA: The SPAU 140C evaluates phase angle difference, voltage difference, and frequency slip between two AC networks before allowing a synchronization command.\u003c\/p\u003e\n\u003cp\u003eQ: Does the SPAU 140C support both live-line and dead-line checking?\u003cbr\u003eA: Yes. The relay includes voltage-check functions that supervise live or dead line and busbar conditions according to configured voltage thresholds.\u003c\/p\u003e\n\u003cp\u003eQ: Can the SPAU 140C operate with different auxiliary supply ranges?\u003cbr\u003eA: Yes. Available versions support auxiliary power supply ranges including 80 to 265 VAC\/DC and 18 to 80 VDC.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the SPAU 140C in the specified subrack or flush mounting arrangement according to the mechanical installation requirements.\u003c\/li\u003e\n\u003cli\u003eVerify AC voltage transformer wiring before energizing the relay input circuits.\u003c\/li\u003e\n\u003cli\u003eMaintain separation between voltage measurement wiring and high-current power cables to reduce electrical interference.\u003c\/li\u003e\n\u003cli\u003eConnect communication wiring with appropriate shielding and grounding practices according to the substation control system requirements.\u003c\/li\u003e\n\u003cli\u003eConfirm auxiliary supply polarity for DC versions before applying power.\u003c\/li\u003e\n\u003cli\u003eCheck configured voltage thresholds, phase difference limits, and synchronization parameters during commissioning.\u003c\/li\u003e\n\u003cli\u003ePerform insulation and functional tests after installation before placing the relay into service.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":44591645098072,"sku":"SPAU140C","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/SPAU140C_1200x1200_6ae0b3cb-991f-4291-bcb8-c180c9aa258c.jpg?v=1786611352","url":"https:\/\/www.industriaxplc.com\/id\/products\/abb-spau-140c-synchro-check-and-voltage-check-relay","provider":"IndustriaX Limited","version":"1.0","type":"link"}