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 5-815The SYNCHRONIZING SOURCE setting configures the priority sequence of the time synchronization source, to determinewhich of the available external time sources to use for time synchronization. A setting of None causes the RTC and thesynchrophasor clock to free-run. A setting of PP/IRIG-B/PTP/SNTP, IRIG-B/PP/PTP/SNTP, or PP/PTP/IRIG-B/SNTP causes therelay to track the first source named that is enabled and operational, or free-run if none of these are available. Here, PPmeans a time source that is strictly compliant with PP, and PTP means a time source that is not strictly compliant with PP.When a time source fails or recovers, the relay automatically transfers synchronization as required by this setting.Setup for IRIG-B is illustrated in the Installation chapter.The clock is updated by all sources active in the device. This means that whenever a time synchronization message isreceived through any of the active protocols, the N60 clock updates. However, given that IEC 60870-5-103, IEC 60870-5-104, Modbus, and DNP are low-accuracy time synchronization methods, avoid their use for synchronization when betteraccuracy time protocols, such as IRIG-B, PTP, and SNTP, are active in the system.See the COMMANDS  SET DATE AND TIME menu section of this manual to manually set the RTC.The REAL TIME CLOCK EVENTS setting allows changes to the date and/or time to be captured in the event record. The eventrecords the RTC time before the adjustment.To enable IRIG-B synchronization, the input IRIG-B SIGNAL TYPE must be set to DC Shift or Amplitude Modulated. IRIG-Bsynchronization can be disabled by making this setting None.To configure and enable PTP and/or SNTP, or to set local time parameters (for example time zone, daylight savings), use thefollowing sections.5.3.6.2 Precision time protocol (1588)SETTINGS  PRODUCT SETUP  REAL TIME CLOCK  PRECISION TIME PROTOCOL (1588)SETTINGS  PRODUCT SETUP  REAL TIME CLOCK  PRECISION TIME PROTOCOL (1588)  PTP PORT 1(3)The N60 supports the Precision Time Protocol (PTP) specified in IEEE Std 1588 2008 using the Power Profile (PP) specified inIEEE Std C37.238 2011. This enables the relay to synchronize to the international time standard over an Ethernet networkthat implements PP. PRECISION TIME PROTOCOL (1588)  STRICT POWER PROFILE:DisabledRange: Enabled, Disabled PTP DOMAIN NUMBER0Range: 0 to 255 PTP VLAN PRIORITY4Range: 0 to 7 PTP VLAN ID0Range: 0 to 4095  PTP PORT 1See below PTP PORT 1  PORT 1 PTP FUNCTION:DisabledRange: Enabled, Disabled PORT 1 PATH DELAYADDER: 00000 nsRange: 0 to 60 000 ns in steps of 1 PORT 1 PATH DELAYASYMMETRY: 0000 nsRange: –1 000 to +1 000 ns in steps of 1The N60 is provided with optional Precision Time Protocol capability. This feature is specified as the IEEE1588 software option at the time of ordering. See the Order Codes section in chapter 2 for details.