ULHB307 Reactive Power Compensation Controller
The ULHB307 reactive power compensation controller is a new-type power distribution monitoring and control device that integrates data acquisition, reactive power compensation, and grid parameter analysis. It is suitable for monitoring and reactive power compensation control in AC 0.4kV, 50Hz low-voltage distribution systems. Featuring high-speed digital signal processing (DSP) as its core, the controller adopts AC sampling technology and is equipped with a 128×64 dot-matrix large LCD display as its human-machine interface.
Product Features
· ULHBc selects different reactance rates according to load characteristics, effectively suppressing 5th and 7th harmonic amplification and ensuring the safety of capacitor branches;
· Phase-by-phase switching adapts to three-phase unbalanced reactive power requirements;
· Cylindrical capacitors with a self-healing explosion-proof design;
· Reactors utilize foil winding technology for excellent heat dissipation;
· Compact structure, easy maintenance, suitable for space-constrained distribution rooms;
· Equipped with overvoltage and overtemperature protection functions to ensure long-term stable operation.
Products Description
The ULHB307 reactive power compensation controller is a new-type power distribution monitoring and control device that integrates data acquisition, reactive power compensation, and grid parameter analysis. It is suitable for monitoring and reactive power compensation control in AC 0.4kV, 50Hz low-voltage distribution systems. Featuring high-speed digital signal processing (DSP) as its core, the controller adopts AC sampling technology and is equipped with a 128×64 dot-matrix large LCD display as its human-machine interface.
Data Sheet
| ULHB307 Reactive Power Compensation Controller | |
| Operating power supply | AC220V/380V±20% |
| Rated current | 5A/1A |
| Rated voltage | AC380V±20% |
| Rated frequency | 50Hz±10% |
| Measurement accuracy | Voltage Class 0.5; Current Class 0.5; Active Power Class 1.0; Reactive Power Class 1.0; Frequency Class 0.5 |
| Control parameters | Sensitivity 30mA |
| Minimum response time | 1s |
| EMC | Severity Class IV |
| Altitude | <2500m |
| Ambient temperature | -20℃~+65℃ |
| Relative humidity | 20%-90% at 40℃ |
| Atmospheric pressure | 79.5Kpa-106Kpa |
Q&A
Q: What are the product features of the ULHB307 Reactive Power Compensation Controller?
A: The ULHB307 Reactive Power Compensation Controller is a high-end intelligent measurement and control device designed for low-voltage power distribution systems;
Its core features include:
(1)Multi-functional integration: Combines data acquisition, reactive power compensation control, and grid parameter analysis into a single device, replacing multiple separate instruments with one unit.
(2)High-speed DSP core: Utilizes a high-speed digital signal processor with AC sampling technology, offering fast processing speeds and high measurement accuracy.
(3)Large-screen display: 128×64 dot-matrix LCD screen with Chinese menu; capable of simultaneously displaying various parameters such as power factor, voltage, current, reactive power, and switching status.
(4)Multiple control modes: Supports power factor control, reactive power control, and hybrid control to accommodate various load characteristics.
(5)Flexible switching strategy: Various modes are available, including cyclic switching, encoded switching, phase-segregated compensation, and hybrid compensation.
(6)Comprehensive protection: Multiple safeguarding mechanisms-including overvoltage, undervoltage, undercurrent, harmonic lockout, and overheating protection-ensure the safe operation of the capacitor cabinet.
(7)Static/Dynamic Compatibility: Supports relay output (static) and transistor output (dynamic); compatible with contactors, composite switches, and thyristor switches.
(8)Communication interface: RS485 interface, Modbus-RTU protocol – compatible with distribution power monitoring systems.
(9)Parameter Self-Diagnosis: Power-on self-test with fault code display – enables rapid troubleshooting.
(10)Widely applicable: Suitable for AC 0.4 kV, 50 Hz low-voltage power distribution systems, covering various scenarios including industrial, commercial, and municipal applications.
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