Main Processor Module - GE D90 Plus Instruction Manual

CHAPTER 3: INSTALLATION

Main processor module

Ethernet port
DANGER:
CAUTION:
RS485 port
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Table 1: Dielectric strength for UR
Function Terminals
from
Power supply module high (+), low (+), (–)
Power supply module 48 V DC (+) and (–)
Power supply module relay terminals
Main CPU RS485 port
Main CPU RJ45 port
Main CPU IRIG-B port
Front panel USB port
Contact inputs/outputs all
AC module all
Communications module RS45 ports
G.703 module all except 1a, 8a
RS422 module all except 1a, 8a
Filter networks and transient protection clamps are used in the hardware to prevent
damage caused by high peak voltage transients, radio frequency interference (RFI), and
electromagnetic interference (EMI). These protective components can be damaged by
application of the ANSI/IEEE C37.90 specified test voltage for a period longer than the
specified one minute.
The main processor module contains ports for Ethernet communications, serial RS485
communications, and IRIG-B connection.
The fiber optic communication ports allow for fast and efficient communications between
relays at 100 Mbps. Optical fiber may be connected to the relay supporting a wavelength
of 1310 nm in multi-mode.
The optical fiber sizes supported are 50/125 µm and 62.5/125 µm. The fiber optic port is
designed such that the response times will not vary for any core that is 62.5 µm or less in
diameter. For optical power budgeting, splices are required every 1 km for the transmitter-
receiver pair. When splicing optical fibers, the diameter and numerical aperture of each
fiber must be the same. In order to engage or disengage the ST type connector, only a
quarter turn of the coupling is required.
Observing any fiber transmitter output may cause injury to the eye!
Ensure the dust covers are installed when the fiber is not in use. Dirty or scratched
connectors can lead to high losses on a fiber link.
RS485 data transmission and reception are accomplished over a single twisted-pair with
transmit and receive data alternating over the same two wires. Through the use of this
port, continuous monitoring and control from a remote computer, SCADA system or PLC is
possible.
Plus
-series hardware
to
chassis
chassis
chassis
chassis
chassis
chassis
chassis
chassis
chassis
chassis
chassis
chassis
ELECTRICAL INSTALLATION
Dielectric strength
2000 V AC for 1 minute
2000 V AC for 1 minute
2000 V AC for 1 minute
2000 V AC for 1 minute
1500 V AC for 1 minute
2000 V AC for 1 minute
2000 V AC for 1 minute
2000 V AC for 1 minute
2000 V AC for 1 minute
1500 V AC for 1 minute
1000 V AC for 1 minute
1500 V AC for 1 minute
51