Irig-B - GE 345 Quick Start Manual

Transformer protection system

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CHAPTER 2: INSTALLATION

IRIG-B

GPS CONNECTION

OPTIONAL

IRIG-B

TIME CODE

GENERATOR

(DC SHIFT OR

AMPLITUDE MODULATED

SIGNAL CAN BE USED)

345 TRANSFORMER PROTECTION SYSTEM – QUICKSTART GUIDE

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 345 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 2-24: IRIG-B connection

GPS SATELLITE SYSTEM

RG58/59 COAXIAL CABLE

–

GE MULTILIN

345 RELAY

IRIG-B(+)

IRIG-B(-)

TO OTHER DEVICES

ELECTRICAL INSTALLATION

RECEIVER

897741A1.CDR

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