Electric workers often need to test the performance of power transformers and relays during work, and need to use a relay protection tester. When choosing, the relay protection tester is divided into single-phase, three-phase, and six-phase. Which one should I use? What is the difference between these three types of relay protection? This article will give you a brief introduction.
The difference between single-phase, three-phase, and six-phase relay protection testers is mainly focused on this "phase". Single-phase refers to the output of single-phase current and voltage, and three-phase refers to the output of three-phase current. And voltage, six-phase means that six-phase current and voltage can be output.
The single-phase relay protection tester is a basic type of relay protection tester. It is mainly used for testing some devices with low voltage levels and accuracy. It is an older device with limited application range, but due to its low cost. , The price is low, and there are still certain application scenarios, power workers need to consider carefully.
The three-phase relay protection tester is a more mainstream relay protection tester. It can output three-phase current and voltage, and can cover the current mainstream power transformers and relay tests. It has a large range of applications and is not very expensive. High, it is now the more mainstream relay protection tester.
The six-phase relay protection tester is a comparative relay protection. It can output six-phase current and voltage, and can be competent for almost all current transformers and relays. It has a very high application value. At the same time, the accuracy is also the comparison of these three types of relay protection. Yes, but because of the high cost, the price is also very expensive, and it is generally used for units with higher accuracy and voltage levels.
Generally speaking, single-phase successive guarantee, three-phase successive guarantee, and six-phase successive guarantee. These three successive guarantees have their own merits. The price of high precision and high application is also high, there are few applications, and the price of low precision is also low. The price and cost performance are proportional. In the actual selection process, electric power workers need to choose according to their actual conditions, depending on what tests they usually do and what their accuracy requirements are, so that they can choose a suitable relay protection tester.