Process Bus Modules - GE D30 Instruction Manual

3 HARDWARE
Figure 3–14: ZERO-SEQUENCE CORE BALANCE CT INSTALLATION
The phase voltage channels are used for most metering and protection purposes. The auxiliary voltage channel is used as
input for the synchrocheck and volts-per-hertz features.
Substitute the tilde "~" symbol with the slot position of the module in the following figure.
NOTE
The D30 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 D30 by reducing the number of individual copper terminations.
• Integrates seamlessly with existing D30 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.
GE Multilin
UNSHIELDED CABLE
Ground connection to neutral
must be on the source side
Source
A B C N G
Ground
outside CT
LOAD
Current inputs
8F and 8G modules (4 CTs and 4 VTs)
Figure 3–15: CT/VT MODULE WIRING
D30 Line Distance Protection System
SHIELDED CABLE
Stress cone
Source
A B C
To ground;
LOAD
must be on
load side
996630A5
Voltage inputs
842768A1.CDR

3.2.5 PROCESS BUS MODULES

3.2 WIRING
shields
3
3-13