GV57 Three phase Generator Digital Multifunctional Meter Current/Voltage /Frequency Tester Free Shipping 12001846

GV57 Three phase Generator Digital Multifunctional Meter Current/Voltage /Frequency Tester Free Shipping 12001846
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Three-phase thyristor triggerOur company has a wide range of products. Please choose the right model according to your application::

The output is adjustable three-phase alternating current, which is used for three-phase AC load regulation(default is standard three-phase 380V, nonstandard voltage to be customized):

1.Each phase is triggered by a set of antiparallel thyristorLSJK-T3SCRH

2.Each phase is triggered by a triacLSJK-T3TRI

The output is adjustable direct current, that is, the application of DC load regulation(default is standard three-phase 380V, nonstandard voltage to be customized):

3.Trigger 6 unidirectional silicon controlled rectifier to carry out three-phase full control bridge rectifier (or trigger 3 unidirectional silicon controlled rectifier and 3 diodes to carry out three-phase half controlled bridge rectification)LSJK-T3SCRF

 

(I) overview

Ronco three-phase thyristor AC voltage phase shift trigger (Solid-State JK English name Loncont trigger, referred to as LSJK), which integrates the three-phase voltage synchronous zero crossing detection, phase shift circuit, input trigger circuit control circuit and six drive SCR in one, a unique full compatible input control mode, 0-5Vdc, 0-10Vdc, 4-20mA, 1-5Vdc and 0-10mA automatic mode can adapt, without special custom, can also be manually controlled potentiometer. Under the action of input control, a strong triggering pulse signal with three-phase change of turn-on angle can be generated, and then controllable silicon can be respectively controlled. The three-phase load voltage can be continuously adjustable from 0V to full voltage of power grid. The input range is wide, the output adjustment precision is high, the three-phase symmetry is good, and the anti-interference ability is strong. The trigger needs no external synchronous transformer, and also needs no external DC power supply. The SMT patch process is small in size, less in outer connection and easy to use. Trigger uses single width pulse strong triggering mode to adapt to inductive load or resistive load, &Delta, shape or Y connection method (without N line) can trigger SCR with rated current up to 1500A.

1The trigger has linear compensation function, greatly improves the uniformity of adjustment, the output change is close to the ideal line, the input adjustment range is wide, the output adjustment accuracy is even, the three-phase symmetry is good, and the anti-interference capability is strong.

2The trigger has the function of power on and slow start, which effectively reduces the instantaneous impact current of the load during the power on, effectively protects the module safety and prolongs the load life.

 

 

Potentiometer manual control mode, 0-5Vdc automatic control mode

0-10VdcAutomatic control mode, 4-20mA (1-5Vdc) automatic control mode, 0-10mA automatic control mode

 

 

 

Instructions

1Unique and fully compatible input control mode, 0-5Vdc, 0-10Vdc, 4-20mA, 1-5Vdc, 0-10mA and other automatic methods are able to adapt, without special special orders, can also be manually controlled potentiometer. The input range is wide, the output adjustment precision is high, and the anti-interference ability is strong.

Potentiometer manual control mode: according to the diagram, the middle of the potentiometer is connected to the module cont end, and the potentiometer is connected to the module COM end and the +5V end respectively. +5V voltage generated by the module itself, without external supply, only with manual potentiometer, do not use it, the choice of potentiometer resistance in 2-10K&Omega. When the control terminal cont is changed from 0-5Vdc, the voltage on the load is linearly adjustable from 0 volts to full voltage, and the higher the cont terminal voltage is, the greater the output of the system is.

II, 0-5Vdc control mode: according to the diagram, can accept the microcontroller and other analog signals 0-5Vdc, control input positive to the cont terminal, the negative end of the com terminal, the module internal cont side relative to the com terminal input impedance is greater than 30KΩ. When the control terminal cont is changed from 0-5Vdc, the voltage on the load is from 0 volts toFull voltageLinear adjustable, which is about 0-0.7Vdc cont in the fully closed area, reliable output off the circuit; cont in 0.7Vdc-4.3Vdc for adjustable region, with the increase of the control voltage, phase angle from α 180° 0° linear decrease, conduction angle increases, the load voltage from 0 volts to increaseFull voltageWhen the cont is around 4.3Vdc-5Vdc, it is the fully open area, and the voltage on the load isFull voltage(equivalent to grid voltage).

And 0-10Vdc control mode: according to the diagram, PLC analog signals such as 0-10Vdc can be accepted. The input impedance of the internal 0-10Vdc end of the module relative to the com is greater than 15KΩ.

4-20mA control mode: according to the diagram, can accept the temperature control table and so on 4-20mA analog signal, the module internal 4-20mA side relative com, the input impedance is 250Ω. When the 4-20mA control input, about 4-5mA for the fully closed area, reliable output off the circuit; 5-19mA is adjustable, with the increasing of control current, phase angle from α 180° 0° linear decrease load voltage from 0 volts to increaseFull voltageAround 19-20mA, for the full open area, the outputFull voltage.

0-10mA control mode: according to the icon, this method must be between the module cont and the com end of a 500&Omega, and 1/2W resistance, when the input 0mA, the cont side is 0Vdc, when the input 10mA, cont end is 5Vdc.

2The com terminal must be positive, and the com terminal is negative. If the polarity is reversed, the output of the main circuit of the module may be out of control.

3The control characteristics of each functional end of the module are positive characteristics, namely, the higher the control voltage, the higher the output voltage of the main circuit of the module is.

4At some point, it is advisable to use an input control mode. If more than two inputs are used at the same time, the input signal is generally a strong one. The module can be used both manually and automatically, for example, it is automatically connected to the 4-20mA terminal, manually connected to the 0-5V terminal, and can be switched via the double throw switch.

 

High voltage partial connection diagram

A three-phase AC voltage regulation diagram consisting of a phase shift trigger (LSJK-T3SCRH) and 6 unidirectional thyristors

 

  • Three phase AC voltage regulator circuit three way line, R, S, T, SJK-T3SCRH type, no phase sequence requirements. The three-phase output voltage is symmetrical

Well, under normal circumstances, the three-phase output error is not greater than ± 10V~. If the deviation is a little obvious, please check the voltage of the three phase incoming line R, S and T,

Is the three-phase load balanced?.

  • Three-phase AC voltage load voltage in the circuit may be a delta connection or Y connection, Y connection when the center point do not have access to the N line.

3The trigger end of the trigger (such as A1, G1, &hellip, &hellip, G6, A6) is a single width pulse triggering mode, which can trigger any one-way thyristor within rated current 1500A. The strongly triggered connections are A1 and G1, corresponding to the anode and gate of the KPl, rather than the cathode and gate used in the transformer drive mode.

4The trigger can drive a series of single-phase thyristor with a series of specifications ranging from dozens to 1000 to more than 1000. It is a simple and economical three-phase voltage regulating system, which is generally used for large power regulating system larger than 400A. For the following specifications of 400A, the LSJK-TSR voltage regulation scheme or the three-phase integrated voltage regulating module can be used.

5In the main circuit, between the anode and cathode of the thyristor, a resistor and capacitor absorption circuit must be added, in which the resistance is generally selected 30-100Ω 3W or more, the capacitor is selected 0.1-1.0μ F, 400VAC or more.

6The trigger has the LED power indication and the LED output adjustment indicator.

7The built-in power supply of the flip-flop has no phase relation with the main circuit of R, S and T; “ L” the end can be connected to any phase line; “ N” the end must be connected with the three-phase zero line.

8The trigger does not need an external synchronous transformer, nor an external DC power supply.

9When the trigger works, the heating is very small, and the trigger does not need to be installed on the radiator.

10Between the input control and switching power supply input and the main circuit between the full isolation design, insulation medium pressure is greater than 2000 Vac.

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1.Full purchase of 200 yuan, VAT can be issued (special / ordinary) invoice, if you need to invoice, please contact the shopkeeper to provide billing information, and add some tax points.

2.The company\'s products are factory direct sales entity, with good after-sales service and quality assurance, buyers can rest assured that the purchase!!

3.The company has a large number of conventional products in stock, buyers take 17 per day before the day, you can arrange the delivery of the day! Special specifications can be customized according to customer requirements, the general delivery cycle is 24 hours!

4.The buyer should immediately check in appearance and quantity after receiving the goods, if damaged please contact our company or logistics company to settle. In appearance and quantity without damage and shortage situation, should be timely completion of delivery confirmation. The seller can not provide after-sales service before the completion of the acceptance of the goods, and the recipient must not buy it.

5.The product is guaranteed for one year. Warranty: within one year, if the product quality is unqualified (that is not consistent with the technical parameters described in the baby description), the seller will be free to repair or replace. But the damage is caused by improper use of the buyer and the thyristor (thyristor) in the module has been burned (for any reason) without warranty. So please check the connection mode or consult the shopkeeper before you use it.

 

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