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Tavrida TELARM: How the RC5 Control Is Configured

ANSI 79

TELARM is the software for the RC5 control of Tavrida Rec15 and Rec25 reclosers: connection methods, commands, settings flow and precautions.

By Shadai García, CEO and protection engineer at Tiza Group.

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Auto-reclose 79: transient fault, permanent fault and lockout. Connection, operating characteristic and IEC 61850. Illustrative: actual values come from the settings study.
Short answer

TELARM is the software used to read, edit and load the settings of the Tavrida Electric RC5 control. It connects over USB, Bluetooth, Ethernet, Wi-Fi or the Internet, and requires settings to be approved before they are loaded to the device.

What TELARM is

TELARM is the Tavrida Electric software for its recloser controls. With it you read and edit protection settings, view time-current curves, download records and operate the recloser. This guide describes the flow for the RC5 control of Rec15 and Rec25 reclosers. For the full equipment, see Tavrida Rec15, Rec25 and RC5 control.

How it connects

RouteWhat it needs
USBUSB cable from the PC to the front-panel port and the RC driver installed
RS-232Serial port of the relay module
BluetoothBTM mode enabled on the control screen and an adapter on the PC
EthernetTwisted-pair or fibre cable; IP address and port of the control
Wi-FiThe control in access-point mode, with network name and password
InternetTELARM Dispatcher interface: server with a fixed IP, certificate and external modem

In every case the TELARM model imported for the project is needed: the scheme with the network’s reclosers.

What can be done

Once connected, TELARM lets you upload and download settings, trip, close, switch protection or an individual element on and off, and synchronize date and time. Trip and close commands ask for confirmation. Over the local connection you can operate only with the control in Local mode; over the remote interface only in Remote mode. On connection, the system status and records download automatically.

How the settings flow works

  1. The settings are downloaded from the control. They appear in grey and cannot be edited.
  2. They are edited in the model in the TELARM database, per protection group. The curve can be viewed with the TCC button.
  3. The settings are marked ready and then approved.
  4. Only then are they loaded to the control.

Settings can also be changed from the control’s local screen, but changes made on the PC must be loaded to take effect.

Precautions

  • After a control firmware update, settings may change. Check protection, communications and system settings before returning to service.
  • Check the measurement coefficients (wire-to-terminal connection) against the transformer ratio. At commissioning, with the line energized and the recloser open, the negative-sequence voltage must be below 1 kV; if not, the software phase sequence does not match the line.
  • Back up the current settings before changing anything.

How we help

We configure Tavrida recloser controls remotely: you connect an Internet-enabled computer to the control and we do the rest, with a backup before and after. See remote configuration for reclosers.

References

  • Tavrida Electric, RC5 control user guide for Rec15/25 (commissioning, other control options and settings modification chapters).

Frequently asked questions

How does TELARM connect to the RC5 control?

Over USB (front port), the relay module RS-232, Bluetooth, Ethernet with TCP/IP, Wi-Fi as an access point, or remotely over the Internet through the TELARM Dispatcher interface.

Can the recloser be operated from TELARM?

Yes, after a confirmation prompt. Over a local connection only in Local mode; over the remote interface only in Remote mode.

Why does TELARM ask for settings to be marked as approved?

Because only settings marked ready and then approved can be loaded to the control. It is a barrier against loading an unfinished file.

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