Three-phase electricity meter FF LE-02D CT class 1 LCD (LE-02D CT)

The Three-phase electricity meter FF LE-02D CT class 1 LCD is a DIN-rail mounted energy meter for measuring active energy in three-phase electrical installations where CT (current transformer) inputs are used. It provides class 1 accuracy and a clear LCD readout for cumulative energy measurements, making it suitable for distribution panels in commercial and light-industrial environments. The meter accepts external current transformer inputs to measure higher currents while keeping the meter itself compact and isolated from high currents.

Advantages

The meter offers class 1 measurement accuracy, ensuring reliable active energy readings for billing, monitoring, and power management. The LCD display presents cumulative values in a readable format and the device’s CT input supports flexible installation with a variety of external current transformers. Its DIN-rail form factor and three-phase capability allow integration into standard electrical panels without significant space or wiring changes.

Suitable for

• Monitoring three-phase energy consumption in commercial or light-industrial distribution boards
• Energy billing and sub-billing where class 1 accuracy is required
• Integration with building energy management systems that use CT inputs
• Retrofit applications where physical space is limited but CT-based measurement is needed

When it may not be suitable

This meter is intended specifically for active energy measurement with CT inputs; it is not designed for direct large-current connections without appropriate current transformers. It also does not provide advanced networking or telemetric interfaces natively, so systems requiring built-in remote communication or multi-parameter power quality analysis may need additional devices or converters.

Key specifications

• Measurement type: Active energy (three-phase)
• Accuracy class: Class 1
• Display: LCD for cumulative energy readings
• Input: Current transformer (CT) inputs for external current measurement
• Mounting: DIN-rail for installation in distribution panels
• Application environment: Commercial and light-industrial three-phase installations

How to use

Install the meter on a standard DIN-rail inside the distribution board and connect the voltage inputs to the three-phase supply lines per the manufacturer’s wiring diagram. Fit appropriate external current transformers around each phase conductor and connect the CT secondary outputs to the meter’s CT inputs, ensuring correct polarity and secure connections. After powering the meter, verify the LCD displays cumulative active energy and check that readings correspond to expected consumption patterns. For billing or monitoring, record or export readings according to site procedures; where remote data collection is required, use compatible external telemetry modules or energy management gateways.

What to consider before purchase

• Confirm that your installation uses CT-based measurement and select compatible current transformers with appropriate primary/secondary ratios
• Ensure available space on the DIN-rail and compatibility with your panel wiring layout
• Verify that class 1 accuracy meets your billing or monitoring requirements
• Plan for additional equipment if remote communication or advanced metering functions are required

Usage recommendations

Use correctly rated current transformers and follow polarity markings when connecting CTs. Perform an initial verification of readings under known load conditions and periodically inspect connections and CT integrity to maintain measurement accuracy. Where integration with energy management or billing systems is needed, choose suitable gateways or data-loggers that accept pulse or analogue outputs if available.