Testing of DC Machine
What is the purpose of testing a DC machine?
Examining a DC machine gives us an insight into its operational regime and performance. These traits help us to find the machine’s efficiency, voltage regulation, speed control, and other important parameters.
What is an open circuit test?
A no-load test, which is another name for the open circuit test is the tool for determining of the magnetic characteristics of DC motor. In this test, the machine is rotating at its rated speed but without any load.
What is a short circuit test?
In a short circuit test the short-circuit’s characteristic curve of the machine is determined. In the short circuit test, the armature terminals are short-circuited, and train is run at the lowest speed possible.
What is a load test?
The purpose of the DC machine load test is to establish the efficiency and voltage regulation. Testing of the machine is conducted with full loading, and the input and output power are recorded.
How is the efficiency of a DC machine determined?
As for the DC machine efficiency, it may be measured directly, indirectly, and regeneratively. These methods can be performing the input and output power analysis or loss estimation.
Testing of DC Machine
The direct current (DC) machines have been from the beginning of electrical engineering studies, since the end of the 19th century. They are used in many different industries such as manufacturing and transportation, and they are still applicable even though the current age is digital. The quality performances and dependability of these machines are the most important factors during their whole lifespan. This is why they are subject to extensive testing.
Testing is a tool that helps us to determine the functions of the machine, show if there are any mistakes, and correct them if needed. It also serves to define the instrument, which is an important criterion of its energy conservation and cost-effectiveness. Here we will consider the DC machine’s test type, procedure, and value.
Table of Content
- Definition of Testing
- Types
- Open Circuit Test
- Short Circuit Test
- Load Test
- Determination of Efficiency
- Applications