www.fanox.com Rev. 26 61/1884. PROTECTION FUNCTIONS4.1. General settingsAditionally, it is necessary to define some previous parameters that will provide the SIA-Crelay information about what and how it is going to protect.Group Description Minimum Maximum Step Unit DefaultGeneralesEquipment identifier - - - - “enter your text”Frequency - - 60/50 Hz 50Serial Number - - - - -Language 0 3 1 - ENGLISHActive Settings Group (*) 1 4 1 - 1Trip Voltage Level 12 24 12, 17, 22 or 24 Vdc 17CT phase ratio 1 2000 1 - 1CT neutral ratio 1 2000 1 - 1Local COM Address 1 247 1 - 1Remote address 1 247 1 - 2Remote baudrate 9600 38400 9600, 19200,or 38400 - 19200(*) Available in SIACxxxxxxxxxxA with 3 settings groups (not 4) and models SIACxxxxxxxxxxB with 4 settings group4.2. 50P Function . Phase instantaneous overcurrentThis protection function can be set by using three parameters:Function Description Minimum Maximum Step Unit Default50P_1(*) 50P_2Phase instantaneous overcurrentPermission - - Yes/No - NoTap 0,10 30,00 0,01 I nominal 5,00Operating time 0,02 300,0 0,01 S 0,2The operating time is independent from the operating current flowing through the equipment, soif the phase current exceeds its predetermined value for an equal or greater amount of time thanthis preset value, the protection function activates (trips) and does not reset itself until the valueof the phase drops below the point of current pick-up.The function activates at 100% of the preset input, and deactivates at 95%. The reset isinstantaneous.The accuracy of the operating time is equal to the preset time ±30ms or ±0.5% (whichever isgreater).(*) NOTE: 50P_2 available in SIACXXXXXXXXXXA model.
