ABB RELION REC650 Commissioning Manual

Also see for RELION 650 SERIES: Technical manual Technical manual Engineering manual Operation manual Quick start guide

Contents

ABB RELION REC650 Commissioning Manual Manual pdf 53 page image

During the following tests of the different functions in the IED, verify that theevents and indications in the IEC master system are as expected.6.3 Fibre optic loop M11905-3 v6The SPA communication is mainly used for SMS. It can include differentnumerical IEDs with remote communication possibilities. The fibre optic loop cancontain < 20-30 IEDs depending on requirements on response time. Connection toa personal computer (PC) can be made directly (if the PC is located in the station)or by telephone modem through a telephone network with ITU (CCITT)characteristics.Table 8:Max distances between IEDs/nodesglass < 1000 m according to optical budgetplastic < 25 m (inside cubicle) according to optical budget6.4 Optical budget calculation for serial communicationwith SPA/IEC M11736-4 v2Table 9:ExampleDistance 1 kmGlassDistance 25 mPlasticMaximum attenuation - 11 dB - 7 dB4 dB/km multi mode: 820 nm - 62.5/125 um 4 dB -0.16 dB/m plastic: 620 nm - 1mm - 4 dBMargins for installation, aging, and so on 5 dB 1 dBLosses in connection box, two contacts (0.5 dB/contact) 1 dB -Losses in connection box, two contacts (1 dB/contact) - 2 dBMargin for 2 repair splices (0.5 dB/splice) 1 dB -Maximum total attenuation 11 dB 7 dB1MRK 511 425-UEN A Section 6Establishing connection and verifying the SPA/IEC communicationBay control REC650 2.2 IEC 47Commissioning manual