Three-phase thyristor voltage regulator.This product adopts digital display technology and is equipped with a standard user-friendly UI human-machine control panel, which supports fault alarm prompting and product parameter configuration. On-site maintenance and replacement are extremely convenient. Its high reliability and heat dissipation technology ensure the reliability of the product during long-term operation. All core components use original Semikron thyristors, ensuring excellent quality.
three-phase thyristor voltage regulator can be widely used in electric heating control. It is suitable for heating control of resistive loads, silicon carbide rods, silicon molybdenum rods, quartz lamps, graphite loads, and inductive transformer loads, and serves as an excellent execution unit for temperature control. It is extensively applied in industries such as petroleum, chemicals, pharmaceuticals, glass manufacturing, metal heat treatment, and smelting.
three-phase thyristor voltage regulator features an intelligent online distribution function, which can reduce the impact on the power grid. It is equipped with a standard MODBUS RTU interface, as well as an optional PROFIBUS DP bus interface or MODBUS TCP communication.
Features
It has a power-on soft start function, with the soft start time configurable from 0 to 360 seconds. It also features a soft shutdown function.
Equipped with MODBUS RTU communication function, and can be optionally equipped with a PROFIBUS DP bus option to realize DCS fieldbus control.
Possesses SCR overtemperature detection, power phase failure protection, and precise current transformer-based current limiting and overcurrent protection functions. It also has an emergency stop function for faults.
Load operating voltage range: 100-440V.
Linear program control with no output temperature drift. A dedicated anti-interference CPU is adopted to ensure system reliability.
The device uses a flame-retardant ABS shell and flame-retardant internal components to improve safety factors.
A 12-bit AD converter is used to achieve more precise adjustment.
With digital/OLED display function, it can display voltage, three-phase current, alarm codes, etc., and parameters can be set locally.
Multiple load wiring modes are available, including star connection with neutral point grounded, star connection with neutral point ungrounded, delta connection, etc., which can be set via parameters.
Has an online distribution function, which can realize intelligent networked distribution control, reduce the impact on the power grid, and increase the power factor.
Optional transmission output function, with multiple transmission types available.
All product modules adopt original Semikron (Germany) products, ensuring a longer service life.
Adapts to the main power frequency automatically, with a frequency range of 47-63Hz. It can be widely used in various working environments where generator frequency is unstable, ensuring system safety and reliability.
Control Signals
Optional standard signal inputs including 4-20mA, 0-10mA, 0-5V, 0-10V, 1-5V, 2-10V, and PWM.
Control Methods
Integrated technology of voltage regulation phase-shifting and zero-crossing cycle power regulation. It can realize closed-loop control such as constant current, constant voltage, and constant power, as well as dual-closed-loop three-phase rectified DC power supply, electrolysis power supply, and electroplating power supply.
Load
Optional Load Rated Voltage Range
220V, 380V, 440V, 660V, 1140V
Applicable Load Types
Various pure resistive loads, various inductive loads, IR infrared lamps, and other loads; various DC power supplies, electrolysis power supplies, and electroplating power supplies
Load Wiring Modes
Three-phase star connection with neutral point ungrounded (3S), three-phase star connection with neutral point grounded (4S), three-phase delta connection (3D), three-phase inner delta connection (6D)
Protection System
Fast fuse protection, precise current transformer protection, phase failure protection, overvoltage protection, overtemperature protection, etc.
Communication (Optional)
Standard MODBUS RTU communication
Standard PROFIBUS DP communication
Alarms
Phase failure alarm, overvoltage/overcurrent alarm, overtemperature alarm, etc.
Cooling Methods
10A-50A: Self-cooling
60A-1200A: Air cooling
1000A-3000A: Air cooling or water cooling
Other Detailed Parameters
| Input Impedance | 120Ω (for 4-20mA input mode) |
| Soft Start Time Range | Adjustable range of 0-60 seconds |
| Output Voltage Control Range | 0.00-0.98 of the input voltage |
| Adjustment Output Resolution | 0.2° |
| Three-Phase Trigger Unbalance Degree | ≤ 0.6° |
| Phase Discrimination | Automatic discrimination of R-S-T three-phase voltages |
| Protection Action Time | < 20ms |
| Relay Contact Rating | 250V AC 2A |
| External Voltage Control Function | Voltage adjustment (internal) / 0.00-1.00 |
| Insulation Resistance | 20 MΩ (at 500V DC) |
| Dielectric Strength | 2000V AC for 1 minute (for 220V models); 2500V AC for 1 minute (for 380V models) |
| Material & External Coating | Cold-rolled steel plate with electrophoretic coating treatment |
| Current Limiting Function | Adjustment range of 0.20-1.10 |
| Overcurrent Protection System | Electronic-type protection |
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