LEADER 02048nam 2200349 450 001 996279559503316 005 20231206190629.0 010 $a0-7381-0897-9 024 7 $a10.1109/IEEESTD.1987.79657 035 $a(CKB)3780000000089283 035 $a(NjHacI)993780000000089283 035 $a(EXLCZ)993780000000089283 100 $a20231206d1987 uy 0 101 0 $aeng 135 $aur||||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aANSI/IEEE Std C37.93-1987 $eIEEE Guide for Power System Protective Relay Applications of Audio Tones over Telephone Channels /$fInstitute of Electrical and Electronics Engineers 210 1$aNew York, New York :$cIEEE,$d1987. 215 $a1 online resource (43 pages) 330 $aSuperseded. This guide contains information and recommendations for applying audio tones over telephone channels for power system relaying. Included are sections on transmitting and receiving equipment, leased telephone channels, application principles, installation, and testing. Reflected in this work is the knowledge and experience of equipment manufacturers and telephone companies as well as that of power utility users. This guide is not intended to supplant specific or general instructions contained in the manufacturers' instruction books or in any contractual agreement between a manufacturer or telephone company(s) or both and a purchaser of a given relaying system. The illustrations in 5.7 are used for illustrative purposes only and do not represent the preferred protection under all conditions. 517 $aANSI/IEEE Std C37.93-1987: IEEE Guide for Power System Protective Relay Applications of Audio Tones Over Telephone Channels 606 $aTelecommunication$xEquipment and supplies$xStandards 615 0$aTelecommunication$xEquipment and supplies$xStandards. 676 $a621.38 801 0$bNjHacI 801 1$bNjHacl 906 $aDOCUMENT 912 $a996279559503316 996 $aANSI$92072434 997 $aUNISA LEADER 01533oam 2200457zu 450 001 9910830660203321 005 20210807004037.0 010 $a0-470-77866-0 010 $a0-470-77174-7 010 $a0-470-77204-2 035 $a(CKB)2500000000001603 035 $a(SSID)ssj0000398368 035 $a(PQKBManifestationID)11303616 035 $a(PQKBTitleCode)TC0000398368 035 $a(PQKBWorkID)10362174 035 $a(PQKB)10640157 035 $a(EXLCZ)992500000000001603 100 $a20160829d1990 uy 101 0 $aeng 181 $ctxt 182 $cc 183 $acr 200 14$aThe Chemistry of the Metal Carbon: The Structure Preparation, Thermochemistry and Characterization of Organometallic Compounds. Vol. 2 210 31$a[Place of publication not identified]$cJohn Wiley & Sons Incorporated$d1990 300 $aBibliographic Level Mode of Issuance: Monograph 311 $a0-471-90282-9 606 $aOrganic Chemistry$2HILCC 606 $aChemistry$2HILCC 606 $aPhysical Sciences & Mathematics$2HILCC 615 7$aOrganic Chemistry 615 7$aChemistry 615 7$aPhysical Sciences & Mathematics 676 $a547/.05 s 676 $a547/.05 700 $aHartley$b Frank R$01615756 702 $aPatai$b Saul E 801 0$bPQKB 906 $aBOOK 912 $a9910830660203321 996 $aThe Chemistry of the Metal Carbon: The Structure Preparation, Thermochemistry and Characterization of Organometallic Compounds. Vol. 2$93982413 997 $aUNINA