Zero-crossing power control device adopts OLED liquid crystal display technology and a user-friendly UI human-machine interface. With a modular design, on-site maintenance and replacement are extremely convenient.zero-crossing power control device is high reliability and heat dissipation technology ensure the product's reliability during long-term operation.
Zero-crossing power control device can be widely used in electric heating control. zero-crossing power control device 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.
Zero-crossing power control device is widely used in industries such as petroleum, chemicals, pharmaceuticals, glass, metal heat treatment, and smelting.
This product 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
Equipped with a power-on soft start function, with the soft start time configurable from 0 to 360 seconds. It also has a soft shutdown function.
Features MODBUS RTU communication function, and can be additionally equipped with a PROFIBUS DP bus option to realize DCS fieldbus control.
Has 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: 100-690V.
Adopts linear program control with no output temperature drift. A dedicated anti-interference CPU is used to ensure system reliability.
The device uses a flame-retardant ABS shell and flame-retardant internal components to improve safety factors.
Utilizes a 12-bit AD converter to achieve more precise adjustment.
With digital/OLED display function, it can show voltage, three-phase current, alarm codes, etc., and parameters can be set locally.
Supports multiple load wiring modes, 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.
Automatically adapts to the main power frequency, with a frequency range of 47-63Hz. It can be widely used in various working environments where generator frequency is unstable, ensuring system reliability.
Load
Rated Voltage Range of Load
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)
Control Signals
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, and is also applicable to dual-closed-loop three-phase rectified DC power supplies, electrolysis power supplies, and electroplating power supplies.
Protection System
Fast fuse protection, precise current transformer protection, phase failure protection, overvoltage protection, overtemperature protection, etc.
Communication
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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