Libra-3 ANSI Standard Industrial and Commercial User Multifunction Electric Ener

• High-reliability, high-precision (better than accuracy Class CA 0.2) energy register, to fulfill the application demands of power consumers;

• Supporting forward energy, reverse energy, forward + reverse and forward – reverse energy four types of energy accumulation methods;

• Supporting multiple plug-and-play communication modules, such as RS485/232, power line carrier, wireless and Ethernet and others; 

• Supporting senior functions of smart metering, such as demand, time-of-use, event logging and load control;

• Supporting senior metering functions, such as reactive, harmonic wave and energy quality monitoring;

• Electricity anti-tamper design, capable of detection of meter inverted, pull-out or external magnetic field disturbance and other abnormal events;

• Supporting LCD or runner energy display methods, provided with backlight function to turn on backlight automatically on the operation of the push buttons;

• Battery, capable of battery replacement without opening of the internal cover; Used to maintain clock, or the display and meter reading and other auxiliary functions in case of power down;

• Optional in-built maximum 200A current relay for remote switch on/off, so as to realize load control function;

• Modular product platform; Compactable with various extended function modules, with no need to recalibrate the meter; Optional function modules, including demand, time-of-use, load curves and other communication modules;

• Supporting communication interconnection, allowing third party communication scheme integrated into the product.

Metering mode

• Four measurement methods for active energy metering;

• Two measurement methods for reactive energy metering;

• Apparent energy

• Instantaneous electric parameters: split-phase voltage, current, power, phase angle, harmonic wave, frequency and power factor;

Display

• Display parameter may be configurable as 4, 5 or 6 digits and 0, 0.1, 0.01 and 0.001 decimals;

• Supporting three display mode: normal, testing and alternative;

Asynchronous serial communication interface
 

• 2 asynchronous serial communication interfaces: optical communication and AMR/AMI interfaces, supporting ANSI C12.18 and C12.19;

• Provided with MeterBuddy2 parameter setting software, to be used for data reading, parameter setting, demand reset, event reset, relay on/off and event log enquiry;

Demand

• Maximum demand;

• Accumulative demand;

• Continuous Accumulative demand;

Time-of-use function

• Maximum 4 time-of-use time frames and 4 seasons;

• Maximum 3 day type time schedules, plus one holiday time schedule;

• Maximum 80 time-of-use time schedule setting points;

• Maximum 150 programmable dates;

• Supporting holiday, season switching, daylight saving, settlement and timing demand reset;

• Every TOU time frame supporting maximum 5 energy and demand registers;

• Every demand supporting maximum 2 accompany demands;

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• High-reliability, high-precision (better than accuracy Class CA 0.2) energy register, to fulfill the application demands of power consumers;

• Supporting forward energy, reverse energy, forward + reverse and forward – reverse energy four types of energy accumulation methods;

• Supporting multiple plug-and-play communication modules, such as RS485/232, power line carrier, wireless and Ethernet and others; 

• Supporting senior functions of smart metering, such as demand, time-of-use, event logging and load control;

• Supporting senior metering functions, such as reactive, harmonic wave and energy quality monitoring;

• Electricity anti-tamper design, capable of detection of meter inverted, pull-out or external magnetic field disturbance and other abnormal events;

• Supporting LCD or runner energy display methods, provided with backlight function to turn on backlight automatically on the operation of the push buttons;

• Battery, capable of battery replacement without opening of the internal cover; Used to maintain clock, or the display and meter reading and other auxiliary functions in case of power down;

• Optional in-built maximum 200A current relay for remote switch on/off, so as to realize load control function;

• Modular product platform; Compactable with various extended function modules, with no need to recalibrate the meter; Optional function modules, including demand, time-of-use, load curves and other communication modules;

• Supporting communication interconnection, allowing third party communication scheme integrated into the product.

Metering mode

• Four measurement methods for active energy metering;

• Two measurement methods for reactive energy metering;

• Apparent energy

• Instantaneous electric parameters: split-phase voltage, current, power, phase angle, harmonic wave, frequency and power factor;

Display

• Display parameter may be configurable as 4, 5 or 6 digits and 0, 0.1, 0.01 and 0.001 decimals;

• Supporting three display mode: normal, testing and alternative;

Asynchronous serial communication interface
 

• 2 asynchronous serial communication interfaces: optical communication and AMR/AMI interfaces, supporting ANSI C12.18 and C12.19;

• Provided with MeterBuddy2 parameter setting software, to be used for data reading, parameter setting, demand reset, event reset, relay on/off and event log enquiry;

Demand

• Maximum demand;

• Accumulative demand;

• Continuous Accumulative demand;

Time-of-use function

• Maximum 4 time-of-use time frames and 4 seasons;

• Maximum 3 day type time schedules, plus one holiday time schedule;

• Maximum 80 time-of-use time schedule setting points;

• Maximum 150 programmable dates;

• Supporting holiday, season switching, daylight saving, settlement and timing demand reset;

• Every TOU time frame supporting maximum 5 energy and demand registers;

• Every demand supporting maximum 2 accompany demands;

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