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Protection & Control
Schneider Electric support forum about Protection Relays, Substation Controllers & RTUs, Arc Flash Devices & Systems in Medium Voltage and Low Voltage. A place to get support on product selection, installation, commissioning and troubleshooting.
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Hello everyone,
In one project with PowerLogic T300 (formerly named Easergy T300), we have a 4G+GPS optional modem for the PowerLogic HU250 module in order to use it as GPS synchronization device.
Thanks in advance,
Milica Dukić
Posted: 2021-02-17 01:04 AM
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Hello Milica,
yes, that's correct, you absolutely need 2 different antennas, one used for the GPS synchro and the other one for the 3G or 4G cellular data.
EMS59161 must be connected to the upper connector of HU250 for the GPS synchronization and has to be localized outdoor, with a direct view to the sky... and eventually a 3rd party antenna should make the job if it is dedicated for that frequency : 1575 MHz.
One important point, in case you are using cellular data, it's recommended also using the outdoor antenna (EMS59160) connected to the lower connector of HU250. In this case, it is possible also to synchronize the T300 with this antenna, using a SNTP server available inside your cellular network, if any. This synchronisation, using the cellular data is less accurate than using the GPS antenna which provide a 1 ms time synchronisation accuracy.
BR
Yves Chollot
Posted: 2021-02-17 01:04 AM
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Hello Milica,
yes, that's correct, you absolutely need 2 different antennas, one used for the GPS synchro and the other one for the 3G or 4G cellular data.
EMS59161 must be connected to the upper connector of HU250 for the GPS synchronization and has to be localized outdoor, with a direct view to the sky... and eventually a 3rd party antenna should make the job if it is dedicated for that frequency : 1575 MHz.
One important point, in case you are using cellular data, it's recommended also using the outdoor antenna (EMS59160) connected to the lower connector of HU250. In this case, it is possible also to synchronize the T300 with this antenna, using a SNTP server available inside your cellular network, if any. This synchronisation, using the cellular data is less accurate than using the GPS antenna which provide a 1 ms time synchronisation accuracy.
BR
Yves Chollot
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@Anonymous user thank you for help.
Best regards,
Milica Dukić
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