Product overview

The three-phase fully isolated intelligent AC voltage regulation module adopts large-scale integrated circuit design. It integrates phase-shift trigger circuit, one-way or two-way thyristor, RC resistance-capacitance absorption loop and power supply circuit. It adopts high-quality and safe electronic components, SMT SMT technology, imported high-power thyristor chip and low thermal resistance copper-ceramic bonding (DCB) base plate, fully isolated design between the control terminal and the strong current main circuit, built-in synchronous transformer to form an integrated structure, small size, stable performance and reliability High sex. The product set is fully compatible with manual or automatic adjustment and multi-function input control mode, greatly reducing the difficulty of customer selection. The trigger conduction angle of the output thyristor can be adjusted in various ways to change the voltage on the load, thereby adjusting the output power and achieving stepless adjustment of the load voltage from zero volts to the full voltage of the grid. It is widely used in heating equipment, lighting, motor speed regulation, transformer primary side, welding, electroplating and other mechanical resistance or inductive loads. It is an ideal product for the upgrading of many industries such as industrial automation control, power supply, motor drive and speed regulation.

Model meaning

Product performance characteristics

1. The input control terminal and the strong current main circuit are fully isolated, and the insulation medium is greater than 2000VAC.

2. The module adopts high-quality and safe electronic components, SMT chip technology, high-power thyristor chips and low thermal resistance copper-ceramic bonding (DCB) backplane. It has a built-in synchronous transformer to form an integrated structure, epoxy resin potting, small size and stable performance. , high reliability.

3. It has linear compensation function, the output is a linear characteristic curve, and the built-in RC resistor and capacitor absorbs little harmonic interference and has strong anti-interference ability.

4. The module is fully compatible with automatic input signals such as 0-5VDC, 1-5VDC, 0-10VDC, 2-10VDC, _0-10mA, 4-20mA, etc., and can also be manually controlled with a 2-10k/2w potentiometer. Wide input adjustment range and high output adjustment accuracy

5. Designed with a green upper ED power indicator light and a red LED output adjustment indicator light to facilitate users to observe the working status.

6. The three-phase symmetry is good, the output is stable, and the output terminal is steplessly adjustable from 0 volts to the maximum value of the power grid.

Technical parameters

Overall dimensions and wiring diagram

Product typical applications

Heating equipment: electric furnace, oven, heating equipment, injection molding equipment, textile equipment, drying system, power supply distribution system

Lighting equipment: stage lighting, hotel lighting, industrial lighting, public lighting

Motor drive and speed regulation: fan motor, water pump motor, torque motor

Other industrial controls: transformer primary side, inductor coil, electroplating, welding, etc.

Product packaging instructions

The internal circuit structure of DTY is two high-power thyristor chips with anti-parallel output and no void welding, which is universal for 220VAC or 380VAC. The internal circuit structure of STY is six high-power thyristor chips with anti-parallel output and no void welding. Low thermal resistance copper-ceramic bonding (DCB) base plate, good heat dissipation, stable performance and high reliability. The power supply voltage is 380VAC, and special voltages can be customized from the company.

Module selection and precautions

1. The selection of module current specifications should take into account the fluctuation of grid voltage and the instantaneous current impact of the load at startup, ambient temperature, heat dissipation conditions and other factors. It is recommended to leave appropriate margins. To ensure that the module can work reliably for a long time, it is recommended that: resistive load: the nominal current of the module should be 3-4 times the rated current of the load. Inductive load: The nominal current of the module should be 5-6 times the rated current of the load.

2. The module cannot output a large current at a small conduction angle (high input voltage, low output voltage) for a long time. Otherwise, the module will become seriously hot or even burn out. It is recommended to operate the module with the output voltage adjusted to be more than 1/2 of the input voltage and with a large conduction angle.

3. To adopt over-voltage or over-current protection, you can connect diodes in parallel to the input and output ends or select a 800V-900V piezoresistor for effective over-voltage protection. When the main circuit is connected to a fast fuse or circuit breaker, the value is 1.5 times the actual load.

4. A radiator must be installed to dissipate heat effectively to prevent the module from burning out electronic components or breaking down the chip due to excessive temperature. A radiator must be selected reasonably. A radiator must be installed for loads above 10A, forced air cooling or water cooling for loads above 40A, and an 80°C temperature switch for over-temperature protection. Calculation method of module heat generation: heat generation = actual load current (ampere) x 1.5 watts/ampere

5. It is impossible to accurately adjust the speed of asynchronous motors. It is only suitable for torque motors, fans, water pump motors and other occasions that do not have high speed requirements. Speed ??regulation can be achieved through the voltage regulation module.