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5.2 PRODUCT SETUP
EE
The relay contains a real time clock (RTC) to create timestamps for communications protocols as well as for historical data,
such as event records and oscillography. When the relay restarts, the RTC initializes from an onboard battery-backed
clock, which has the same accuracy as an electronic watch, approximately ±1 minute per month (~23 ppm). Once the RTC
is synchronized with the Precision Time Protocol (PTP), IRIG-B, or SNTP, its accuracy approaches that of the synchroniz-
ing time delivered to the relay.
The SYNCHRONIZING SOURCE setting configures the priority sequence that the relay uses to determine which of the
available external time sources synchronizes the RTC and the synchrophasor clock. A setting of None causes the RTC and
the synchrophasor clock to free-run. A setting of PP/IRIGB/PTP/SNTP, IRIGB/PP/PTP/SNTP, or PP/PTP/IRIGB/SNTP
causes the relay to track the first source named that is enabled and operational, or free-run if none of these are available.
Here, PP means a time source that is strictly compliant with PP, 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.
See the
COMMANDS
The REAL TIME CLOCK EVENTS setting allows changes to the date and/or time to be captured in the event record. The
event records 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 using the
5
Settings > Product Setup > Real Time Clock > IRIG-B > IRIG-B Signal Type setting. IRIG-B synchronization can be dis-
abled 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
the following sections.
b) PRECISION TIME PROTOCOL (1588)
PATH: SETTINGS
PRODUCT SETUP
PRECISION TIME
PROTOCOL (1588)
PATH: SETTINGS
PRODUCT SETUP
5-40
PRECISION TIME
PROTOCOL (1588)
SNTP PROTOCOL
MESSAGE
LOCAL TIME
MESSAGE
menu item section of this manual to manually set the RTC.
SET DATE AND TIME
REAL TIME CLOCK
STRICT POWER PROFILE:
Disabled
PTP DOMAIN NUMBER
MESSAGE
0
PTP VLAN PRIORITY
MESSAGE
4
PTP VLAN ID
0
PTP PORT 1
MESSAGE
REAL TIME CLOCK
PORT 1 PTP FUNCTION:
MESSAGE
Disabled
PORT 1 PATH DELAY
MESSAGE
ADDER:
PORT 1 PATH DELAY
MESSAGE
ASYMMETRY:
B90 Low Impedance Bus Differential System
See below
See below
See below
PRECISION TIME PROTOCOL (1588)
Range: Enabled, Disabled
Range: 0 to 255
Range: 0 to 7
Range: 0 to 4095
PRECISION TIME PROTOCOL (1588)
Range: Enabled, Disabled
Range: 0 to 60 000 ns in steps of 1
00000 ns
Range: –1 000 to +1 000 ns in steps of 1
0000 ns
5 SETTINGS
PTP PORT 1(3)
GE Multilin
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