Table of Contents
Code and Implication
Application
ZHIMING brand of 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.
Functional Features
- Calculates compensation capacity based on fundamental reactive power to prevent switching oscillation.
- Accurately displays system power factor, even in the presence of harmonics.
- High precision measurement with a wide display range for power factor.
- Real-time monitoring of total power factor (PF).
- Real-time display of voltage and current total harmonic distortion (THD).
- User-friendly human-machine interface for easy operation.
- Multiple control parameters are presented via a digital display for intuitive configuration.
- Dual operation modes: Automatic and Manual.
- Built-in over-voltage and under-voltage protection.
- Protection against excessive voltage harmonics.
- Non-volatile memory ensures data retention in the event of power failure.
- Low input impedance for current signal: ≤ 0.01Ω
Technical Specifications
- 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
- Display Type: LCD
- Protection Degree: IP40 (Enclosure)
Specification & Dimensions
- Mounting Type: Panel-mounted
- 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
Environmental Conditions
- 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
