Irig-B - GE Multilin 350 Series Instruction Manual

ELECTRICAL INSTALLATION

IRIG-B

GPS CONNECTION
OPTIONAL
GENERATOR
AMPLITUDE MODULATED
SIGNAL CAN BE USED)
2–18
Courtesy of NationalSwitchgear.com
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. The type of form is auto-detected by the 350 relay. 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 synchronized.
Figure 20: IRIG-B connection
GPS SATELLITE SYSTEM
IRIG-B
RG58/59 COAXIAL CABLE
TIME CODE
+
(DC SHIFT OR
–
CHAPTER 2: INSTALLATION
GE MULTILIN
350 RELAY
E1 IRIG-B(+)
D1 IRIG-B(-)
TO OTHER DEVICES
350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
RECEIVER
898741.CDR