ABB RER620 Product Manual
Also see for RER620: Installation manualManualApplications manualTechnical manualCommunication protocol manual
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7layed. In such applications, RER620 includes a se-quence coordination feature. Recloser feature inRER620 includes Switch Onto the Fault (SOTF)which prevents reclosing sequence when recloser/breaker is manually closed on forgotten groundingafter a maintenance work along the power line.During the stormy weather, there might be manyautoreclose shots within a few minutes. Thesetypes of faults can easily damage recloser/breakerif the reclose function is not blocked based on fre-quent operation counters.Figure 1 shows the protection functions availablefor the standard configuration.RER6201 Io selectable by setting, Io calculated as default52Υ or ΔVa, Vb, Vc 351P3I> 50P-13I> 50P-23I>> 50P-33I>>>6846PD 3I 2f >I 2/I 1I2 >50BF3I>BF 46I2 >67P3I>->51NI0>50N-1I0>50N-2I0>>50N-3I0>>>32PP>-> 32NQ>->50SEFI0> HIZPHIZ1 67N 1I0>->Ia, Ib, Ic 427P3U< 59P3U> 81f 81SUFLS/R22 Under-frequcny and df /dt based load shedding function59PSV 1 > 59NV0 >60FUSEFΥ27P3U< 59P3U>47NSV 2 >47NSV2 > V1 > 59PS59NV0 >25SYNC0 791 LCMLCM3 In the case of ABB GridShield recloser , these are embedded Capacitor VoltageDivider (CVD) with 10,000:1 ratio4 In the case of ABB GridShield recloser , these are embedded Current Transformer(CT) with 600:1 ratio—Figure 1. Protectionfunction overview |
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