MiCOM P921/P922/P923 - Schneider - error

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P92x/EN FT/H42Page 62/70t AUX 1 =t AUX 2 =0.0 s0.0 sTechnical GuideUser GuideMiCOM P921/P922/P923Description: setting of the auxiliary timer associated to theAUX1 logic input.Range: 0 – 200s, step = 0,01sDescription: setting of the auxiliary timer associated to the AUX2 logie input.Range: 0 – 200s, pas = 0,01s2.7.10 "VT SUPERVISION" Submenu (MiCOM P922 and P923 only)The voltage transformer supervision (VTS) feature is used to detect failure of theanalog ac voltage inputs to the relay. This may be caused by internal voltagetransformer faults, overloading, or faults on the interconnecting wiring to relays. Thisusually results in one or more VT fuses blowing.MiCOM P922 and P923 are able to detect a VT loss by using VTS automatism. Assoon as VT loss is detected, all voltage dependent functions will be blocked(according to the setting), an alarm can be raised.To gain access to the VT Supervision submenu from the “Automatic control” menu,press followed by or until the desired submenu header is displayed.AUTOMATIC CTRLVT SUPERVISIONHeading of the Automatic control menu. To gain access to themenu from the default display press followed by or untilthe menu is displayed.Heading of the Voltage Transformer Supervision(VTS)VTS supervision ?NoDetection modeVTS InputDescription: Enable or disable the VT supervision function.Setting choice: Yes or NoIf Yes is selected, the “VT Supervision” menu is activated anddisplayed:If No is selected, the VT Supervision function is inactive.Range: Yes/NoDescription:Range: VTS Inputin 3Vpn+Vr mode only: VTS Input, dVr+Input or delta VrDelta Vr15V or 50VDescription:Range: range 57-130V: 2-130V step = 1Vrange 220-480V: 20-480V step = 5VtVTS5sInhib. VTS / 52a?NoBlock FunctionU< YesU> YesV1< YesV0> YesFrequ.Yesdf/dtYesdu/dtYesDescription: Sets the VTS timer. The VTS alarm will occur if VTfault occurs during more than the VTS timer.Range: from 0 to 100s, in steps of 10ms.Description: Inhibition of VT supervision by the 52a signal. In thiscase, the VTS detection will be inhibited when the circuit breakeris open.Range: Yes/NoDescription: When Yes is selected, the VT fault will block thecorresponding protection (“U> = Yes” will block U>, U>> and U>>>protections, “V0> = yes” will block V0>, V0>>, V0>>>, V0der>,V0der>> and V0der>>>)Range: Yes/No
Technical GuideP92x/EN FT/H42User GuideMiCOM P921/P922/P923 Page 63/702.7.11 "CB SUPERVISION" SubmenuThis submenu makes it possible to validate the circuit breaker supervision andmonitoring functions, and the various settings associated to these functions.In the MiCOM P921 – P922 and P923 relays, the control of the circuit breaker can bedone:• Tripping order: the tripping order is realized by using the dedicated trip outputcontact (RL1). This command is maintained during the specified “TRIP PULSETIME”. The command can be generated by a protective function of the relay: itcan also be done via a logic input (select the “AUX1” logic input and assign the"tAUX1" to the trip output relay), or via the local/remote communication (seechapter 6 of this Technical Guide),• Closing order: 2 different ways can be used.- This order is realized by using the output contact, which hasbeen configured for this closing order (see "AUX OUTPUTRLY" menu, "CLOS. CB" cell). This command is maintainedduring the specified "CLOSE PULSE TIME". The commandcan only be generated via the local/remote communication(see section 2.5).- This order can also be realized by using one logic input(select the "AUX2 logic input) which can be assigned to anyof the output contacts. This command will be maintained aslong as the logic input is energized.Moreover, the MiCOM P922-P923 relays offer the supervision of the closing/openingtime of the circuit breaker. They also include the supervision of the number of CBoperations, with a settable threshold of the maximum allowed operations.To gain access to the Open circuit breaker supervision submenu from the“Automatic control” menu, press followed by or until the desired submenuheader is displayed.AUTOMATIC CTRLCB OPEN S’visionNOCB OPENING TIME0.0 sCB CLOSE S’visionNOCB CLOSING TIME0.0 sNB OPER. ALARM ?NOHeading of the Automatic control menu. To gain access to themenu from the default display press followed by or untilthe menu is displayed.Description: enable/disable the “CB OPEN SUPERVISION”function. If enabled, the function will generate an alarm if themaximum open time has been reached.Range: YES/NONote: only for MiCOM P922 – MiCOM P923Description: setting of the maximum allowed opening timeRange: 0.1 – 5s, step = 0.05sNote: only for MiCOM P922 – MiCOM P923Description: enable/disable the “CB CLOSE SUPERVISION”function. If enabled, the function will generate an alarm if themaximum close time has been reached.Range: YES/NONote: only for MiCOM P922 – MiCOM P923Description: setting of the maximum allowed closing timeRange: 0.1 – 5s, step = 0.05sNote: only for MiCOM P922 – MiCOM P923Description: enable/disable the “NB OPER ALARM” function. Ifenabled, an alarm will be generated if the maximum nb ofoperations has been reachedRange: YES/NONote: only for MiCOM P922 – MiCOM P923
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MiCOMP921/P922/P923Voltage and Freq
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MiCOM P921/P922/P923 - Schneider - error

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