Índice
What Is Capacitor Harmonic Controller？
The ZHIMING ZMCF Series Automatic Reactive Power Compensation Capacitor Controller is designed for use in low-voltage power distribution systems. It automatically regulates capacitor banks to maintain the power factor at a preset level, thereby improving transformer efficiency, reducing line losses, and enhancing voltage stability and power quality. Built around fundamental reactive power calculation and harmonic-immune measurement, the ZMCF delivers stable and accurate reactive power compensation in demanding electrical environments.
Working Conditions of the Capacitor Harmonic Controller
- Ambient Temperature — -25°C to +65°C
- Relative Humidity — ≤90% at +20°C (non-condensing); higher humidity permissible at lower temperatures
- Altitude — ≤2500 meters above sea level
- Installation Environment — No flammable or explosive media; free of conductive dust or corrosive gases; indoor use only; avoid direct exposure to sunlight or strong vibration
Parâmetros do produto
| Item | Especificação |
|---|---|
| Rated Operating Voltage | AC 220V |
| Rated Operating Current | AC 0–5A |
| Rated Frequency Range | 45Hz–65Hz |
| Power Factor Display Accuracy | Lag 0.001 / Lead 0.001 |
| Reactive Power Measurement Range | 0–9999 kVar |
| Active Power Measurement Range | 0–9999 kW |
| Under Voltage Protection Threshold | AC 300V |
| Output Contact Capacity | AC 220V / 7A |
| Current Detection Sensitivity | ≥ 20mA |
| Total Power Consumption | ≤ 10VA |
| Tipo de ecrã | LCD |
| Protection Degree | IP40 (Enclosure) |
Main Technical Data of the Capacitor Harmonic Controller
Nota: Outros modelos com especificações especiais são fornecidos de acordo com os requisitos do utilizador
| Item | Especificação |
|---|---|
| Mounting Type | Montagem em painel |
| Outline Dimensions (W × H × D) | 144 × 144 × 100 mm |
| Cut-out Size | 138 × 138 mm |
| Weight | Approx. 0.8 kg |
| Wiring Mode | Terminal block connection at the rear panel |
Why Choose ZHIMING's Capacitor Harmonic Controller?
Fundamental Reactive Power Calculation for Stable Switching
The ZMCF calculates compensation capacity based on fundamental reactive power, preventing switching oscillation that plagues conventional power factor controllers. This approach ensures stable and precise capacitor bank regulation, protecting switching equipment from repeated inrush stress and extending the service life of the compensation system.
Harmonic-Immune Measurement with Real-Time THD Monitoring
Even in the presence of harmonics, the controller accurately displays the system power factor with high precision and a wide display range. It monitors total power factor (PF) in real time and simultaneously displays voltage and current total harmonic distortion (THD), giving operators complete visibility into power quality.
Comprehensive Voltage and Harmonic Protection
Built-in over-voltage and under-voltage protection safeguard the compensation system from abnormal grid conditions, while protection against excessive voltage harmonics prevents harmonic-induced equipment damage. Multi-level protection ensures reliable operation and reduces maintenance costs in fluctuating power environments.
Flexible Dual-Mode Operation with Permanent Data Retention
The ZMCF supports dual operation modes — Automatic and Manual — through a user-friendly human-machine interface with digital display of multiple control parameters for intuitive configuration. Non-volatile memory ensures data retention in the event of power failure, while low input impedance for the current signal (≤0.01Ω) enables accurate measurement with minimal signal loss.
FAQ
What is the ZMCF Automatic Reactive Power Compensation Capacitor Controller used for?
The ZMCF is designed for low-voltage power distribution systems, where it automatically regulates capacitor banks to maintain the power factor at a preset level. This improves transformer efficiency, reduces line losses, and enhances voltage stability and power quality.
How does the ZMCF prevent switching oscillation?
The controller calculates compensation capacity based on fundamental reactive power rather than total apparent power. This fundamental-based calculation prevents capacitor switching oscillation, ensuring stable and accurate regulation even in systems with significant harmonic content.
What is the rated operating voltage and current of the ZMCF?
The ZMCF operates at a rated voltage of AC 220V and a rated current of AC 0–5A, with a rated frequency range of 45Hz–65Hz. Its total power consumption is ≤10VA, and it features a low current-signal input impedance of ≤0.01Ω.
What protection features does the ZMCF include?
The controller includes built-in over-voltage and under-voltage protection, as well as protection against excessive voltage harmonics. These safeguards protect both the controller and the connected capacitor banks from abnormal voltage conditions and harmonic-induced stress.
Does the ZMCF retain its settings after a power failure?
Yes. The Capacitor Harmonic Controller uses non-volatile memory, ensuring that all configured parameters are retained in the event of a power failure. No reconfiguration is required after power is restored, minimizing downtime in unattended installations.
