Περιγραφή
the product introduction
SZT15 / SZT20 series AC current transducer can be real-time isolated measurement of AC current in the grid or circuit, and convert it to 0-5V / 0-10V or 4-20mA DC output signal, with a variety of AD with Then, constitute a variety of digital centralized acquisition system, or output to the PLC and other automatic control system, or with the traditional analog, digital indicating instrument with the display of the measured value. The input current for SZT15 models is 10A, 20ΕΝΑ, or 50A, and for SZT20 models is 100A, 150A and 200A, through the transmitter jumper cap on the choice of appropriate Through current.
Χαρακτηριστικά: With overload capacity, high precision, high isolation, high security, low power consumption, anti-interference ability and other characteristics, and easy to install.
Εφαρμογές: Widely used in industrial automation and various needs of the current and voltage conversion occasions.
Product Features
mutual inductance current monitoring, high current detection accuracy, stable performance, input and output safety isolation
The measured current is AC: 0-10ΕΝΑ / 20ΕΝΑ / 50ΕΝΑ; 0-100ΕΝΑ / 150ΕΝΑ / 200A can be selected
Output signal DC: 0-5V / 0-10V / 4-20mA three forms optional
Installation and easy to use, no DC measurement in series into the circuit.
through-heart structure design, isolation voltage up to 2000VAC.
Hysteresis less than 1%, can be used in strong magnetic field conditions.
The shell is self-extinguishing material ABS refined.
working principle
On the basis of electromagnetic induction, when the current in the line changes, will have induced current. Through the transformer to a large current into a standard small current, and then through the relevant signal processing circuit and the output control circuit can output 0-5 / 10V or 4-20mA DC signal, the transmission to the next level system.
typical application
AC current measurement and monitoring.
AC motor overload protection.
Electronic switch for automatic control system.
the need for current and voltage conversion of the occasion
Προδιαγραφές
| Power supply: | Voltage output type Self-powered No external power supply Current output type requires auxiliary power supply DC: 24V ± 10% |
| Input Amperage Range (AC) | 0-10A/20A/50A(SZT15 series) 0-100A/150A/200A(SZT20 series) |
| Output signal (DC): | 0-5V / 10V(output Voltage) 4-20mA(output Current) |
| Switch on the minimum: | 0.5 ± 0.2A (round mouth type) 1.5 ± 0.2A (Square mouth type) |
| Frequency | 10-200Hz |
| The maximum overload current | 200% (< 200% of the rated input current). |
| Accuracy | 10% |
| Power consumption | ≤1W |
| μεγάλοeakage current: | ≤1mA |
| Hysteresis: | ≤1%FS |
| Repeatability | 100% |
| Through the heart diameter: | 0.35-20mm |
| Response time: | ≤200ms |
| Temperature limit | 32 to 122ºF (0 to 50ºC) |
| Humidity limits | 10-95% (non-condensing) |
| Dimensions: | 61.5×90×26mm Pore size:20mm(round mouth type) 63×100×32.2mm Pore size:20×20mm(Square mouth type) |
| Enclosure Rating: | UL 94V-0 flammability rated ABS, insulation class 600 V. |
| Insulation withstand voltage: | 2000VAC 50/60HZ 1min |
Model Description
Types of products:
SZC is the current sensor switch
SZT is the current transducer
means Through current:
15 means the range of through current:0-10A/20A/50A AC
20 means the range of through current:0-100A/150A/200A AC;
means The shape of the fixed port of the device:
CH means Circular fixed hole,The wire must pass through the hole;
SH means Can open the square hole,the hole can be opened
means the output voltage:
5V meansThe output voltage:0-5V DC;
10V meansThe output voltage:0-10V DC;
420E means Output DC current 4-20mA;
E.g:SZT15-CH-5V
means:This device is the current transducer, Through current range of 0-10 / 20 / 50A AC; device for the circular fixed mouth; output DC voltage range of 0-5V.
Model selection
| Series product | Input ρεύμα (AC) | output styles | power supply |
| SZT15-CH-5V | 0-10/20/50ΕΝΑ | 0-5V DC | self – powered |
| SZT15-SH-5V | 0-10/20/50ΕΝΑ | 0-5V DC | self – powered |
| SZT15-CH-10V | 0-10/20/50ΕΝΑ | 0-10V DC | self – powered |
| SZT15-SH-10V | 0-10/20/50ΕΝΑ | 0-10V DC | self – powered |
| SZT15-CH-420E | 0-10/20/50ΕΝΑ | 4-20mA DC | 24V DC(±10%) |
| SZT15-SH-420E | 0-10/20/50ΕΝΑ | 4-20mA DC | 24V DC(±10%) |
| SZT20-CH-5V | 0-100/150/200ΕΝΑ | 0-5V DC | self – powered |
| SZT20-SH-5V | 0-100/150/200ΕΝΑ | 0-5V DC | self – powered |
| SZT20-CH-10V | 0-100/150/200ΕΝΑ | 0-10V DC | self – powered |
| SZT20-SH-10V | 0-100/150/200ΕΝΑ | 0-10V DC | self – powered |
| SZT20-CH-420E | 0-100/150/200ΕΝΑ | 4-20mA DC | 24V DC(±10%) |
| SZT20-SH-420E | 0-100/150/200ΕΝΑ | 4-20mA DC | 24V DC(±10%) |
Note:SZT series current transducer Through current must be AC
Προϊόν dimemsion (μονάδα:mm)
Typical wiring
Εγκατάσταση
Mount the switch in a suitable location using the two mounting holes in the base of the unit. If using ties, make sure ties are securely fastened and that the unit is stable. If using crews, tightly screw in one screw at a time into each hole.
Ensure that the power supply to the circuit is off.
ρεisconnect the circuit line, slide the power conductor cable through the sensing hole of the current switch, and reconnect the circuit line. Notice that the direction of the measured current is from the side with “ד to the other side.
Connect the output circuit, notice that the first terminal block connect to the anode of the output device and the second connect to the cathode of the output device.
Connect the power-supply circuit, notice that the third terminal block connect to the cathode of the power-supply and the fourth connect to the anode of the power-supply.
Turn circuit back on.
The DC current transducer is working now.
Trouble Shooting
Question:
There is DC power to the unit, but there is not any signal to the output.
Solution:
Verify that the DC current to the unit is normal, notice that the DC sensing transducer will stop working as long as the DC current is too low to be induced, and the DC current exceed the rated levels will damage the DC current transducer.
Verify the 24V power-supply to the DC sensing transducer is normal, and the power-supply connection in wrong way will be damage the DC sensing transducer.
Verify the connection between the output terminal block and the next device.
