3SU15000AA100AA0 in stock. German 3SU15000AA100AA0 electrical components. 3SU15000AA100AA0 inventory.

3SU15000AA100AA0 electrical components are surge absorbers/varistor assemblies. Due to their nonlinear resistance change with voltage, they exhibit symmetry in both directions (positive and negative). They respond to abnormal voltages on the line, absorbing most of the surge/spike energy while suppressing the abnormal voltage to a safe range, thereby improving line safety and stability. In the standby state, the surge absorber (varistor) has a very high impedance (several megohms) relative to the protected electronic components and does not affect the characteristics of the original circuit design. However, when an instantaneous surge voltage occurs (exceeding the breakdown voltage of the surge absorber), the impedance of the surge absorber drops low (to only a few ohms), creating a short circuit in the line, thus protecting electronic products or more expensive components.

3SU15000AA100AA0 Electrical Component Composition

A multimeter consists of three main parts: the meter head, the measurement circuit, and the selector switch. The multimeter is the most basic tool in the field of electronic testing and is a widely used test instrument. Also known as a multi-meter, triple-meter (A, V, Ω, i.e., for current, voltage, and resistance), multiplex meter, or universal meter, multimeters are divided into analog multimeters and digital multimeters. There is also an oscilloscope multimeter with oscilloscope functions, which is a multifunctional, multi-range measuring instrument. General multimeters can measure DC current, DC voltage, AC voltage, resistance, and audio levels; some can also measure AC current, capacitance, inductance, temperature, and certain parameters of semiconductors (diodes, transistors). Digital multimeters have become mainstream, replacing analog instruments. Compared with analog instruments, digital instruments offer higher sensitivity, higher accuracy, clearer displays, stronger overload capacity, and are easier to carry and use.

3SU15000AA100AA0 Electrical Component Characteristics

Sensitivity refers to the ratio of the change in output to the change in input of a sensor under steady-state operating conditions. It is the slope of the output-input characteristic curve. If there is a linear relationship between the sensor's output and input, then the sensitivity S is a constant. Otherwise, it will vary with changes in the input. The dimension of sensitivity is the ratio of the dimensions of the output and input quantities. When the dimensions of the sensor's output and input quantities are the same, sensitivity can be understood as the amplification factor. Increasing sensitivity can yield higher measurement precision. However, the higher the sensitivity, the narrower the measurement range, and often the poorer the stability.

3SU15000AA100AA0 Electrical Component Principle

In power generation, transformation, transmission, distribution, and consumption lines, current magnitudes vary significantly, ranging from a few amperes to tens of thousands of amperes. For ease of measurement, protection, and control, these need to be converted to a relatively uniform current level. Additionally, voltages on lines are generally high, making direct measurement very dangerous. Current transformers serve the purpose of current transformation and electrical isolation. For analog ammeters, the secondary current of current transformers is mostly at the ampere level. For digital instruments, the sampled signal is generally at the milliampere level. The secondary current of miniature current transformers is at the milliampere level, primarily serving as a bridge between large transformers and sampling. Miniature current transformers are also referred to as "instrument current transformers." ("Instrument current transformer" implies precision current transformers with multiple current ratios used in laboratories, generally for extending instrument ranges.) Similar to transformers, current transformers operate based on the principle of electromagnetic induction; transformers transform voltage, whereas current transformers transform current. The winding connected to the measured current is called the primary winding; the winding connected to the measuring instrument is called the secondary winding. The ratio of the primary winding current I1 to the secondary winding I4 current is called the actual current ratio K. The current ratio when the current transformer operates at rated current is called the rated current ratio of the current transformer, denoted by Kn.

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