GE N60 Instruction Manual

Also see for N60: Communications manual Communications guide Instruction manual Instruction manual Instruction manual

Contents

CHAPTER 5: SETTINGS PRODUCT SETUPN60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL 5-115Access supervisionSETTINGS  PRODUCT SETUP  SECURITY  ACCESS SUPERVISIONThe following access supervision settings are available.INVALID ATTEMPTS BEFORE LOCKOUT — This setting specifies the number of times that an incorrect password can be enteredwithin a three-minute time span before lockout occurs. When lockout occurs, the LOCAL ACCESS DENIED or REMOTE ACCESS DENIEDFlexLogic operands are set to “On.” These operands are returned to the “Off” state upon expiration of the lockout.PASSWORD LOCKOUT DURATION — This setting specifies the time that the N60 locks out password access after the numberof invalid password entries specified by the INVALID ATTEMPTS BEFORE LOCKOUT setting has occurred.The N60 provides a means to raise an alarm upon failed password entry. If password verification fails while accessing apassword-protected level of the relay (either settings or commands), the UNAUTHORIZED ACCESS FlexLogic operand is asserted.The operand can be programmed to raise an alarm via contact outputs or communications. This feature can be used toprotect against both unauthorized and accidental access attempts.The UNAUTHORIZED ACCESS operand is reset with the COMMANDS  CLEAR RECORDS  RESET UNAUTHORIZED ALARMScommand. Therefore, to apply this feature with security, password-protect the Command level. The operand does notgenerate events or targets.If events or targets are required, the UNAUTHORIZED ACCESS operand can be assigned to a digital element programmed withevent logs or targets enabled.The following table outlines access level timeout settings.SETTINGS  PRODUCT SETUP  SECURITY  ACCESS SUPERVISION  ACCESS LEVEL TIMEOUTSThese settings allow the user to specify the length of inactivity required before returning to the Restricted access level.Note that the access level is set to Restricted when control power is cycled.COMMAND LEVEL ACCESS TIMEOUT — This setting specifies the length of inactivity (no local or remote access) required toreturn to Restricted access from the Command password level.SETTING LEVEL ACCESS TIMEOUT — This setting specifies the length of inactivity (no local or remote access) required to returnto Restricted access from the Command password level.Dual-permission security accessSETTINGS  PRODUCT SETUP  SECURITY  DUAL PERMISSION SECURITY ACCESSThis feature provides a mechanism to prevent unauthorized or unintended upload of settings to a relay through the localor remote interface. ACCESS SUPERVISION   ACCESS LEVEL TIMEOUTSSee below INVALID ATTEMPTSBEFORE LOCKOUT: 3Range: 2 to 5 in steps of 1 PASSWORD LOCKOUTDURATION: 5 minRange: 5 to 60 minutes in steps of 1 ACCESS LEVEL TIMEOUTS  COMMAND LEVEL ACCESSTIMEOUT: 5 minRange: 5 to 480 minutes in steps of 1 SETTING LEVEL ACCESSTIMEOUT: 30 minRange: 5 to 480 minutes in steps of 1 DUAL PERMISSION SECURITY ACCESS  LOCAL SETTING AUTH:OnRange: selected FlexLogic operands (see below) REMOTE SETTING AUTH:OnRange: FlexLogic operand ACCESS AUTHTIMEOUT: 30 min.Range: 5 to 480 minutes in steps of 1