Table of Contents
Advertisement
4.3 Personal Computer Interface
The relay can be operated from a personal computer using a USB port on the front panel.
On the personal computer, the following analysis and display of the fault currents are available in
addition to the items available on the LCD screen using the PC interface software RSM100.
• Display of current waveform:
• Symmetrical component analysis:
• Harmonic analysis:
• Frequency analysis:
At the optional communication model, RSM100 can use via Ethernet LAN.
For the details, see the separate instruction manual "PC INTERFACE RSM100".
4.4 MODBUS Interface
The GRE110 supports the MODBUS communication protocol. This protocol is mainly used when
the relay communicates with a control system and is used to transfer the following measure and
status data from the relay to the control system. (For details, see Appendix M.)
• Measurement data:
• Status data:
• Setting data
• Remote CB operation － Open / Close
• Time setting / synchronization
The protocol can be used through the RS-485 port on the relay rear panel.
The relay supports two baud-rates 9.6kbps and 19.2kbps. These are selected by setting. See
Section 4.2.6.4.
4.5 IEC 60870-5-103 Interface
The GRE110 supports the IEC60870-5-103 communication protocol. This protocol is mainly used
when the relay communicates with a control system and is used to transfer the following measurand
and status data from the relay to the control system. (For details, see Appendix N.)
• Measurand data: current
• Status data:
The protocol can be used through the RS-485 port on the relay rear panel.
The relay supports two baud-rates 9.6kbps and 19.2kbps, and supports two normalizing factors 1.2
and 2.4 for measurand. These are selected by setting. See Section 4.2.6.4.
The data transfer from the relay can be blocked by the setting.
For the settings, see the Section 4.2.6.
4.6 IEC 61850 Communication
GRE110 can also support data communication according to the IEC 61850 standard with the
provision of an optional communication board. Station bus communication as specified in IEC
61850-8-1 facilitates integration of the relays within a substation control and automation system
current
events, fault indications, counters, etc.
events, fault indications, etc.
150
Oscillograph display
On arbitrary time span
On arbitrary time span
On arbitrary time span
6 F 2 T 0 1 7 2
- Quick Links:
- Inverse Time Overcurrent Protection
Hide quick links:
Advertisement
Table of Contents
