Remote protection is the basis of network protection in transmission systems, as well as in interconnected distribution networks. Its operating principle is based on the measurement and assessment of the short-circuit impedance, which in the basic case is proportional to the fault distance. Testing the remote protection function is the main topic of this work, where hardware (test set CMC) and software (Test Universe) from Omicron, and relays 7SA611 from Siemens were used. Two types of tests were carried out in this work, basic and advanced. Basic testing was performed using the QuickCMC, Advanced distance and State Sequencer modules. Through basic testing, we evaluate the behavior of the remote protection function of a relay isolated from the rest of the network, using the three previously mentioned modules. On the other hand, we have a test using the RelaySimTest module, which is considered a more advanced test. RelaySimTest offers the possibility of managing multiple test sets over the Internet, which requires at least two computers with Internet access, one at the local end and the other at the remote end. The local computer is running RelaySimTest, while the computer at the remote end is running Device Remote Agent, which creates a network connection and assigns control of the test set to RelaySimTest. What is being tested in this paper is the protection of a transmission line using two 7SA611 numerical relays. The test sets are Various failures are simulated, and we use modules to evaluate the passability of the tests performed.