Product description
Electronic energy meter applies to thefrequency 50Hz 1 60Hz active energymetering or installed indoor or outdoormeter box to use. It is suitable for ambienttemperatures of -10 ~ +50'C , relative humidityless than 85%, and ambient air shouldhave no corrosive gases,dust-free, saltspray, condensation and other effects.
Main features: applying computer management,firstly purchasing electric power thenusing; in the rated current range can limitthe. use of maximum power(defined by theelectricity sector); each meter respondsto a card,specifically card is dedicated,lost card without losing power, and thenusing after re-making the card; the electriccard can transmit the data by two-wayat the same time,and can automaticallyalert users to purchase power, when theremaining power is zero, it automaticallycut-off its power; and it has a certain anti-theft software design etc.
Specifications and maintechnical parameters
Specification
. The start-up current: the meter is at the
rated voltage, rated frequency and powerconditions:Level 1 meter is 0.004Ib,level two meter is 0.005 lb,
. Creeping: When the meter circuit has no
current, and the voltage that is applied tothe line is equal to the 115% rating voltage,the output pulse is no more than one.. Power Consumption: < 2W.10VA
Data processing
The energy metering pulses is sent tothe CPU through the optocoupler ,thenthe operation is stored in non-volatile.EEPROM. By the computer managementinformation system, through the IC cardreader, writing a certain power andmonitoring requirements within the IC cardis input table microprocessor system, afterthe CPU operation, it provides a display,alarm, and cut-off state signal.
Working Principle
The meter obtains the voltage samplingsignal by the divider, adopts the currentsampling signal by shunt,gets a product ofvoltage and current signals by the multiplier,and then generates the counting pulsesthat is from a frequency proportional to theproduct of voltage and current via throughthe frequency conversion.
