T-GPS User Manual Version 1.2 | 6
2.
Product Overview
2.1
Application
T-GPS3000A Time Synchroniser (T-GPS3000A) is a time synchronisation product that utilises
the Global Positioning System (GPS) to provide a very accurate time reference for the
electric power system.
It combines a GPS receiver with a micro-computer and buffers, to provide a local time source
with a variety of outputs. The format of the output signals is configured to match the
requirements of all available disturbance recorders, sequence of event recorders, travelling
wave fault locators, SCADA systems and other equipment requiring accurate timing.
T-GPS3000A is mainly used in the following applications:
•
Providing an accurate time reference for substation equipment such as; Digital Fault
Recorders (DFRs), Sequence of Event Recorders (SERs), Supervisory Control and Data
Acquisition (SCADA) Systems, Relays, and other similar equipment.
•
Frequency monitoring comparing the difference between working frequency time and a
standard time reference.
•
Measuring phase angles.
•
Fault location.
•
Relay protection experimentation.
2.2
Master Slave Designation
A T-GPS3000 can be designated as a Master or slave device. It is necessary to have a slave
unit when a single GPS device does not have sufficient outputs to synchronise all the
equipment in the substation, and there is a restriction in the number of antennas that can be
set up. The master unit will synchronise itself to the satellites through the antenna, the
slave(s) will then synchronise to the master.
2.3
Product Features
•
1 µS accuracy.
•
High reception reliability, immune to adverse field conditions.
•
Multiple time code outputs, display of time information via serial port,
•
Easy connection to other equipment.
