Process Bus Modules - GE C30 Instruction Manual

3.2 WIRING
3
Switchgear
ground bus
When using an SH/SL power supply module or a C30 with the HardFiber system, before powering off the C30, save
data in the compact flash memory using Commands > Relay Maintenance > Save Non-Volatile Data. When not
saved or the relay loses power, up to the last two minutes of data is not saved to the compact flash memory.
NOTE
The C30 can be ordered with a process bus interface module. This module is designed to interface with the GE Multilin
HardFiber system, allowing bi-directional IEC 61850 fiber optic communications with up to eight HardFiber merging units,
known as Bricks. The HardFiber system has been designed to integrate seamlessly with the existing UR-series applica-
tions, including protection functions, FlexLogic™, metering, and communications.
The IEC 61850 process bus system offers the following benefits.
• Drastically reduces labor associated with design, installation, and testing of protection and control applications using
the C30 by reducing the number of individual copper terminations.
• Integrates seamlessly with existing C30 applications, since the IEC 61850 process bus interface module replaces the
traditional CT/VT modules.
• Communicates using open standard IEC 61850 messaging.
For additional details on the HardFiber system, refer to GE publication GEK-113500: HardFiber System Instruction Manual.
Every contact input/output module has 24 terminal connections. They are arranged as three terminals per row, with eight
rows in total. A given row of three terminals may be used for the outputs of one relay. For example, for form-C relay outputs,
the terminals connect to the normally open (NO), normally closed (NC), and common contacts of the relay. For a form-A
output, there are options of using current or voltage detection for feature supervision, depending on the module ordered.
The terminal configuration for contact inputs is different for the two applications.
The contact inputs are grouped with a common return. The C30 has two versions of grouping: four inputs per common
return and two inputs per common return. When a contact input/output module is ordered, four inputs per common is used.
The four inputs per common allows for high-density inputs in combination with outputs, with a compromise of four inputs
sharing one common. If the inputs must be isolated per row, then two inputs per common return should be selected (4D
module).
3-12
AC or DC
Heavy copper conductor
or braided wire
B8b B8a B6a B6b B5b
–
FILTER SURGE
Figure 3–13: CONTROL POWER CONNECTION
C30 Controller System
NOTE:
14 gauge stranded
wire with suitable
disconnect devices
is recommended.
+ +
LOW
HIGH
CONTROL
POWER
UR-series
protection system

3.2.4 PROCESS BUS MODULES

3.2.5 CONTACT INPUTS AND OUTPUTS
3 HARDWARE
AC or DC
+
—
OPTIONAL
ETHERNET SWITCH
827759AA.CDR
GE Multilin