Three Phase Thyristor Voltage Regulator

Features

Multiple Input Methods: Supports 0-5V, 0-10V, 4-20mA signal inputs, and manual 10K potentiometer input.

Thyristor Output: Suitable for three-phase star and delta connections.

Cooling Requirements: Requires appropriate heat sinks during use, and forced air cooling if necessary.

Integrated Design: Combines the thyristor main circuit and phase-shift trigger control circuit into a multifunctional power integrated module.

Durable Construction: Made with flame-retardant engineering plastic housing, copper base plate, high-temperature soldering, and strong instantaneous overload capacity.

Wide Applications: Suitable for resistive and inductive loads such as incandescent lamps, temperature control, industrial furnaces, ovens, motors, electrical switch cabinets, automation control, fan speed regulation, torque motor speed regulation, and more.

When selecting a product, different current margins should be reserved based on the nature of the load. (For resistive loads, select 2-3 times the load current. For inductive or capacitive loads, select 3-5 times the load current.)

According to the relationship between load current and ambient temperature, if the ambient temperature is high or the cooling conditions are poor, the current capacity should be increased. To prevent load short circuits during use, it is required to connect a fast circuit breaker or fast fuse corresponding to this product in series in the load circuit.

For inductive loads, a varistor should be connected in parallel at the output end to prevent damage to the thyristor due to overvoltage. Varistor (MOV) selection: for 240V, choose 430-470V; for 440V, choose 680-750V; for 660V, choose 1100-1200V.

During installation, the contact surface between the heat sink and this product must be flat and smooth, and a layer of thermal grease should be evenly applied to its surface. Finally, tighten and fix the screws with flat washers and spring washers symmetrically.

After the solid-state relay is first operated and stopped, the fixing screws should be tightened again while it is still warm to ensure that the base plate of the solid-state relay and the surface of the heat sink are in close contact, achieving optimal heat dissipation.

The nominal current of different models of solid-state relays is the nominal current at an ambient temperature of 40°C, so adequate cooling is necessary.

Do not use a multimeter on the load end to determine the quality of the product!