Irig-B Board; Figure 20: Irig-B Board - GE MiCOM P40 Agile Technical Manual

Chapter 3 - Hardware Design
Terminal Number
Terminal 11
Terminal 12
Terminal 13
Terminal 14
Terminal 15
Terminal 16
Terminal 17
Terminal 18
6.7

IRIG-B BOARD

Figure 20: IRIG-B board

The IRIG-B board can be fitted to provide an accurate timing reference for the device. The IRIG-B signal is
connected to the board via a BNC connector. The timing information is used to synchronise the IED's internal real-
time clock to an accuracy of 1 ms. The internal clock is then used for time tagging events, fault, maintenance and
disturbance records.
IRIG-B interface is available in modulated or demodulated formats.
The IRIG-B facility is provided in combination with other functionality on a number of additional boards, such as:
Fibre board with IRIG-B
●
Second rear communications board with IRIG-B
●
● Ethernet board with IRIG-B
Redundant Ethernet board with IRIG-B
●
There are two types of each of these boards; one type which accepts a modulated IRIG-B input and one type
which accepts a demodulated IRIG-B input.
50
Relay 6 NO
Relay 6 NO
Relay 7 changeover
Relay 7 changeover
Relay 7 common
Relay 8 changeover
Relay 8 changeover
Relay 8 common
Output Relay
P14x
P14xEd1-TM-EN-1