Current Transducer Introduction, how to wire the current transducer?

The German GMC current transmitter is powered by the self-powered transmitter model i542 without an external power supply for the measured quantity and has a response time of 300 ms, the two-wire transmitter model i538 has a response time of 300 ms, and the measurement deformed wave transmitter model i552 has a response time of 300 ms and 50 ms. Converts the AC current signal to be measured into a DC current or voltage signal corresponding to it. The maximum current that can be directly wired at the input terminal is 5A, and more than 5A should be connected to the transmitter through the current transformer, and the output is 0 20 mA, 4 20 mA, 0 10V, and there is a wide range of AC and DC power modules.

Linear Flow Transmitter V604. When selecting the model, you just need to know the input, output, and power supply.

Generally, in order to ensure the compatibility and interchangeability of each sensor and other devices in the control system, standard signals must be used for transmission between them, and these standard signals are compliant.

International standard signals, such as direct current, are:

ma, DC voltage is.

v. The pressure signal is.

kpa (previously also used to use direct current.

ma as a universal standard signal).

Therefore, the current transmitter is a device that uses a standard signal to transmit the amount of current, and generally this kind of transmitter also has the function of electrical isolation.

Such as the characteristics of the KDY-1IB current transmitter.

Purpose: It is a device that transmits the current and voltage parameters in the power grid into a linear DC analog signal through isolation.

Measurement: single-phase, three-phase AC current voltage.

Accuracy: AC

Output: 0 20 madc

4 20MADC, 0 10VDC, 0 5VDC and other analog signals.

Technical parameters. AC Input:

Voltage: 100V, 150V, 220V, 380V, 600V

Current: 1A, 5A

Input load: voltage transformer pt:

Current transformer CT:

Allowable overload: voltage 2 times nominal value continuous; Current 2 times the nominal value continuously; Current 10 times nominal value 10s

Output voltage: 0 10VDC, 0 5VDC (load resistance input voltage 10MADC).

Output current: 0 20madc

4 20MADC (load resistance 10VDC output current) output ripple:

RO peak-to-peak.

Working environment temperature and humidity:

0 50 less than 80% relative humidity (no condensation).

Storage environment temperature and humidity: -20 70 less than 70% relative humidity (no condensation).

use of a power source; ac220±10%，50hz

Special specifications (DC12V, 24V, 48V, 110V, 220V 20%) can be customized

Isolated: Input, output, power enclosure.

Power consumption: DC is about 3W, AC is about 4VA

Housing material: ABS fireproof material.

Weight: about 450 grams for single phase, about 650 grams for three phase.

Compressive strength: AC2kvrms min

Insulation resistance: greater than 100m at DC500V

Dimensions: single-phase 119(L) 55(W) 75(H)mm, three-phase 119(L) 109(W) 75(H)mm

Installation: 35mm standard rail, base screw installation.

The function of the current transmitter is to connect the secondary instrument, and the current transmitter is to convert the large AC and DC current chain silver signal into 4-20mA standard model and provide it to the PLC for control.

The principle of the current transducer is to turn a large current into a small current at a certain ratio, which is easy to detect.

There are two types of current transducers: DC current transducers and AC current transducers.

AC current transmitter is an instrument that can convert the measured AC current into DC voltage or DC current output in linear proportion, and the products are widely used in electrical installations, automatic control and dispatching systems of electric power, post and telecommunications, petroleum, coal, metallurgy, railway, municipal and other departments. The AC current and voltage transmitter has a single channel and a three-way combined structure.

Current Transmitter Features: Tent Banquet.

1. High accuracy (typical: best.

2. The whole range has extremely high linearity.

3. High degree of integration, simple structure, excellent temperature characteristics and long-term working stability, so that the transmitter is exempt from regular calibration.

It can be taken from any mutual inductance current on the site, and good grounding must be ensured, and the current line is taken from the current transformer, and it is strictly forbidden to break the circuit. Common current transmitter wiring diagram basic form:

The current converter can be divided into two types: DC current transmitter and AC current transmitter according to the different current forms, among which the AC current transmitter can be divided into a single-channel AC current Youyan transmitter and a three-way AC circuit transmitter according to the different structural forms, and can be divided into two-wire current transmitter and three-wire current transmitter according to the different output wiring methods.

The rheology transmitter has the characteristics of high precision, small size, low power consumption, wide frequency response, and anti-interference. It is the first in China to create 4 kinds of compensation measures and 6 comprehensive protection functions, and the two-wire port has strong anti-induction lightning ability, and has the advantages of lightning wave and surge protection ability. It is especially suitable for intelligent monitoring systems for load currents such as generators, motors, intelligent low-voltage distribution cabinets, air conditioners, wind and good jujube machines, street lights, etc.

The ultra-low power consumption of the current transducer is that when a single one is quiescent, the power consumption of the full scale is , and the power consumption of the output current is internally limited.

The function of the current transducer is to turn a large current into a small current according to a certain ratio, which is easy to detect. A wire with a high current passes through the middle of the perforation of the current transmitter, and the current of the wire is measured at the output of the current transmitter.

Instrumentation Lesson: What is the role of the transmitter? 5 points of theory must be memorized!

Question one, I don't know what model of current transmitter you are talking about. Take the model we often use as an example of SST3-AD current transmitter, which is divided into single-phase and three-phase current transmitters. Among them, the single-phase converter can input a secondary current from the current transformer, A, B, C phases.

The three-phase current transmitter can input the three-phase current from the current transformer, which is generally the secondary current of the transformer of phase A, B and C, and the corresponding output is a three-way output, and the commonly used DC current is 4-20mA. In addition, a working power supply is required, both DC24V and AC220V. The six wires you're talking about may be a three-phase current transmitter.

SST3-AD single-phase current transmitter.

Question two, I don't know what line you are talking about from the fan. You have to look at the picture.

Problem three, the neutral line is electrified, it may be that the neutral line is broken. Check it out.

Question 4, you may use the plug with a load, such as a soldering iron, there is no switch, when you use the voltage tester, the power supply is transmitted from the live wire of the plug to the n line through the soldering iron, and the voltage tester will light up.

Problem five, single-chip microcomputer is generally used to send control signals to control the speed of the motor, and generally uses a frequency converter. As for PLC, it means programmable controller, which is a single-chip microcomputer inside, but there is also an output relay, which is a control center used to replace the relay for switching and logic control. Its input signal is some sensor or relay contact, after logic operation, the output control signal, complete the logic control, can also be regarded as an industrial computer controller.