Pengukuran Tegangan

Seperti pada pengukuran arus, pengukuran tegangan listrik dengan voltmeter juga memiliki keterbatasan, tahanan dalam meter Rm membatasi kemampuan batas ukur tegangan. Menaikkan batas ukur tegangan dilakukan dengan memasang tahanan ser Rs pada meter dasar. Tahanan seri Rs akan dialiri arus sebesar Is, arus yang melalui meter Rm sebesar Im. Desain Voltmeter Bila sebuah meter D’Arsonval ditambah dengan sebuah tahanan seri ...

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Testing Electrical Control Panel

In industries that have high production costs occurred when the “down time” is beginning a disorder that causes a great loss per unit time. Therefore, there must be personnel were skilled troubleshooting. Troubleshooting is a process of detecting and diagnosing all possibilities that may cause a production of equipment can not function properly. Of proven field experience, that many engineers ...

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Theory of Superposition

A linear network can consist of passive resistive element with two or more sources direct voltage. To analyze the circuit or network like this, it can be used the theory of superposition. In principle this theory utilizing a linear relationship between current and voltage. According to this theory, if there is a voltage source to work together in any linear ...

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Protection and Earthing Motor Loads

Motor operation protects against tampering and damage, on the applied control circuit protection equipment such as table 1. Reliability performance protection will determine motor protection against interference. As an illustration dipelihatkan in Figure 3-1, a circuit controlling a motor with two speeds and two-way swivel that is equipped with the tools and the TOL protection fuse or MCB. Figure 3-1. ...

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Principles of Electric Motor Control

Said control means regulate or control, so it is with the motor control is the setting or controlling the motor from starting, operating until the motor stops. Then controlling the motors can be categorized into three sections according to their functions, namely: Control at the time of starting (starting) Control when the motor is in a state of operation (setting ...

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Construction Three Phase Induction Motors

Induction motor consists of two main parts: The part that remains, called Stator No moving parts, called Rotor Judging from konstrusi rotor induction motor there are two types: Motor rotor cage rotor series of his short circuited. Motor cicincin glide (Slip ring motor), has a rotor wrap Figure 2-4. Construction induction motor. The stator consists of three main parts: 1. ...

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