GE Feeder Management Relay 750 User Manual

3-18 750/760 Feeder Management Relay GE Multilin
3.2 ELECTRICAL 3 INSTALLATION
3
3.2.11 RS232 COMMUNICATIONS
The 9-pin RS232 serial port located on the front panel is used in conjunction with the 750/760PC software for programming
setpoints and upgrading relay firmware. A standard 9-pin RS232 cable is used to connect the relay to a personal computer
as shown below. When downloading new firmware, make sure the relay address is set to 1 and the baud rate is set to 9600.
Figure 3–21: RS232 CONNECTION
3.2.12 IRIG-B
IRIG-B is a standard time code format that allows time stamping of events to be synchronized among connected devices
within 1 millisecond. The IRIG time code formats are serial, width-modulated codes which can be either DC level shift or
amplitude modulated (AM) form. Third party equipment is available for generating the IRIG-B signal; this equipment may
use a GPS satellite system to obtain the time reference so that devices at different geographic locations can also be syn-
chronized.
Figure 3–22: IRIG-B CONNECTION
GE MULTILIN
SR FAMILY
IRIG-B(-)
RECEIVER
TO OTHER DEVICES
RG58/59 COAXIAL CABLE
GPS SATELLITE SYSTEM
GPS CONNECTION
OPTIONAL
IRIG-B(+)
B10
B11
+
–
818838A7.CDR
IRIG-B
TIME CODE
GENERATOR
(DC SHIFT OR
AMPLITUDE MODULATED
SIGNAL CAN BE USED)
Courtesy of NationalSwitchgear.com

GE Feeder Management Relay 750 Specifications

General

Brand	GE
Model	Feeder Management Relay 750
Category	Protection Device
Language	English