3.4.5 Redundant Ethernet Board
The P634 Transformer Differential Protection Device can be (optionally) fitted
with a special communication module named Redundant Ethernet Board, as an
alternative to the single Ethernet board. (See Chapter 15, (p. 15-1) for the
exact order information and Section 5.7, (p. 5-22) for the location and
connection diagrams.)
The Redundant Ethernet Board assures redundancy at IED level, which allows an
alternative path to be always available, thus providing bumpless redundancy.
Industrial or substation control network failure can be disastrous. Redundancy
provides increased safety and reliability, but also devices can be added to or
removed from the network without network downtime.
3.4.5.1 Hardware Modules
P30 devices (i. e. devices from the device family Easergy MiCOM 30) are
constructed from standard hardware modules. The following table lists the item
numbers of the Redundant Ethernet board variants:
Type Item number Description Width
A 9651 531 KE Dual Ethernet SHP + RS 485 + IRIG-B 4 TE
A 9651 532 KE Dual Ethernet RSTP + RS 485 + IRIG-B 4 TE
A 9651 533 KE Dual Ethernet DualHoming + RS 485 + IRIG-B 4 TE
A 9652 036 KE Dual Ethernet PRP + RS 485 + IRIG-B 4 TE
Tab. 3-1: Redundant Ethernet board variants.
All of these boards have 1300 nm multi mode 100BaseFx fiber-optic Ethernet
ports (ST® connector) and modulated IRIG-B input and furthermore connections
for a watchdog relay and an RS485 link (COMM2 interface, see Section 3.4.3,
(p. 3-19)).
The Redundant Ethernet board is fitted into Slot 2 of the P634. Each board has
two MAC addresses, one for the managed embedded switch and one for the
P634.
3.4.5.2 Redundancy Protocols
The following list shows Schneider Electric’s implementation of Ethernet
redundancy, which has four variants with embedded IEC 61850, plus SHP, RSTP,
DHP and PRP redundancy protocols.
3 Operation
P634
P634/EN M/R-42-A // P634‑311‑653 3-31
To Next Page
Loading...
