Fully digital three-phase thyristor power control — phase-shift, zero-crossing fixed-cycle and variable-cycle modes
0–100% continuous regulation via manual setpoint, 4–20 mA signal, hard-wired or communication control
Fiber-optic trigger plus inductive trigger — dual isolation keeping high voltage out of the low-voltage control zone
Multiple high-voltage thyristors in series with R and RC static/dynamic voltage sharing
BOD forced-trigger protection against overvoltage breakdown from unsynchronized series thyristors
PLC centrally handles temperature, device status, alarms and interlocks; touch panel remote operation away from the high-voltage zone
Temperature PID closed loop; displays temperature, output voltage, current, power, run status and alarm history
Air cooling with optional fan monitoring, wireless temperature sensing, over-temperature alarm and shutdown protection
APR3L-HV High-voltage Power Control Cabinet
KULUN APR3L-HV: high-voltage power control cabinet for molten salt heating and HV electric heating, with fiber-optic trigger isolation and PLC control.
产品特征
技术参数
Input | Mains supply | 3AC 3 kV / 6 kV / 10 kV, 50 Hz ±1 Hz |
Control supply | AC/DC 220 V, per project | |
Output | Output voltage | Typical 3 kV, 6 kV, 10 kV; 0–100% continuous regulation |
Output current | Typical 300 A, 500 A, 800 A; sized to load power | |
Control performance | Control modes | Phase-shift, zero-crossing fixed-cycle, zero-crossing variable-cycle |
Regulation range | 0–100% | |
Duty | 100% rated current, long-term continuous operation | |
Control signals | Manual setpoint, 4–20 mA, hard-wired signals or communication | |
Communication | Modbus RTU supported | |
System configuration | Trigger method | Fiber-optic + inductive trigger, dual HV/LV isolation |
Power devices | High-voltage thyristors in series with R/RC voltage sharing and BOD protection | |
Control system | PLC centralized control; optional touch panel remote operation box | |
Cooling | Air cooling; optional cooling ducts, fan monitoring and wireless temperature sensing | |
Cabinet | Custom-built cabinet per project design | |
Environment | Installation | Indoors, ventilated, dry, free of corrosive gas and severe vibration |
Ambient temperature | 0 °C to +50 °C or per project design | |
Altitude | ≤1000 m; derated above 1000 m per standards | |
Protection rating | Typical IP20/IP42, per site environment | |
Protection | Mains protection | Input phase loss, frequency anomaly, undervoltage |
Load protection | Load imbalance, break, earth leakage / ground fault, short circuit | |
Device protection | Thyristor overheating, voltage sharing, BOD forced trigger | |
Output protection | Trigger pulses blocked and shutdown on output overcurrent | |
Auxiliary protection | Optional fan fault, over-temperature alarm and high-temperature interlock shutdown |
典型应用
Molten Salt Heating Control Systems
High-voltage electric heating power control for molten salt energy storage, molten salt furnaces and related processes; forms a temperature loop with thermocouples, PLC and touch panel.
Industrial & Resistance Furnaces
For industrial furnaces, resistance furnaces, salt bath furnaces and heat-treatment furnaces — high-voltage, high-power heating loads configured by voltage, current, power and duty.
High-voltage High-power Heating Supplies
For 3 kV, 6 kV and 10 kV heating supply projects with continuous power regulation, remote start/stop and multiple interlocks.
High-voltage Sites Requiring Remote Operation
For sites where operators stay away from the HV cabinet — start/stop, setpoint, alarm review and status monitoring via touch panel or host system.
FAQ
What is the APR3L-HV mainly used for?
Molten salt heating, industrial electric heating and high-voltage high-power heating supplies — continuous power regulation with temperature closed-loop control.
Is continuous power regulation supported?
Yes — 0–100% via phase-shift, zero-crossing fixed-cycle or variable-cycle control.
How are the HV and control sides isolated?
Fiber-optic and inductive triggering keep high voltage out of the low-voltage control zone for safe operation.
What protection is available?
Phase loss, frequency anomaly, load imbalance/break, earth leakage/ground fault, overcurrent, short circuit, thyristor overheating, fan fault and BOD overvoltage forced trigger.
Can it connect to PLC, touch panel or host?
Yes — PLC centralized control and touch panel remote operation are included; hard-wired signals or communication (e.g. Modbus RTU) per project.
Are voltage, current and cabinet size fixed?
No — 3 kV/400 A, 6 kV/800 A, 10 kV/600 A are project examples. Actual ratings, power, cabinet dimensions and protection rating are designed to site conditions.
What to provide for selection?
Supply voltage, load power, current, heating medium, duty cycle, control signals, communication needs, installation environment, cooling conditions and interlock requirements.
选型咨询
请提供应用行业、设备工况、电压电流、功率范围和现场环境，工程师将协助确认方案。
