ABB PR512 Manual

Also see for PR512: Operator's manual

102PR 512/PPR 512/PDSignalling outputs• Signalling output by means of closing contact.A closing contact is available to signal relay trip(K51/YO3).The contact is of the bistable type and belongs toa relay which keeps its sate even with a power cutand until the RESET operation.After protection trip and circuit-breaker opening,the contact can be reset by means of the RESETpushbutton on the front of the relay, ensuring oneof the following conditions:a) 24 Vdc auxiliary voltage present (display lit);b) circulating primary current higher than 0.2 x In(display lit with indication of the circulatingcurrent);c) application of the TT2 unit to the TEST connec-tor on the front of the release (optional acces-sory).N.B. This signalling contact is not enabled if a remotecircuit-breaker opening command is given. Resettingtakes place 1 s after the pushbutton is pressed.• Microprocessor fault signalling output.A closing contact is available to signal a perma-nent fault in the microprocessor.The contact is of the bistable type and belongs toa relay which keeps the state even in the absenceof the power supply and until the RESET opera-tion).Technical data of the relay contactsThe signalling relay contacts have the followingelectrical characteristics:– maximum interrupted current 0.8 A– maximum interrupted voltage 110 Vca/Vcc– maximum interrupted load at 24 Vdc:– inductive (L/R = 7 ms) 10 W– resistive 24 W– maximum interrupted load at 48 Vac:– inductive (cosj = 0.4) 15 VA– resistive 30 VA– contact/contact insulation 500 Veff– contact/coil insulation 1000 VeffMeasuring functionThe liquid crystal display allows the most highlyloaded phase current to be shown (this measure-ment is a function of the rated current of the CT setby means of Dip Switches on the front of the unit).When there is no auxiliary power supply, theminimum value displayed is 0.21 x In single-phase and 0.18 x In two-phase. With an auxiliarypower supply, it guarantees a minimum valuedisplayed of 0.05 x In. Under this value -LL- (LowLoad) is displayed.Precision is 5% ± 1 LSD (Least Significant Digit)for current values from 0.5 to 1.5 x In.CHARACTERISTICS AND ORDERING CODESOrdering codesProtection relayDescription Code UXABPR 512/P (50-51) 399101001PR 512/P (50-51-50N-51N) 399101002PR 512/PD (50-5150N-51N + Dialogue) 399101003TT2 test unitDescription Code UXABTT2 379602231Opening solenoid (YO3)Description Code UXABSolenoid for HD4 circuit-breaker 349700311External toroidal transformerDescription Code UXABToroid with closed coreinternal diameter 110 mm - 50/1 A 379602301Toroid with split coreinternal diameter 110 mm - 50/1 A 379602302PR 512/PDwith dialogueTT2test unitOpeningsolenoid YO3External toroidaltransformer