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The 1-phase watt-hour meter LS1.1 are digital instruments designed for the measurement of energy in 1-phase power networks with the simultaneous display of measured quantities and digital transmission.
They can be used in applications within power stations, supervision of industrial processes and as elements of various energy management systems within the industries of commercial residential and industrial. The housing enables the watt hour meter to be placed on the terminal cover and a legal seal and the seal of a power plant.
The LS1.1 watt-hour meter can be inserted into existing computer network systems.
Connected to ETHERNET network through a PD8 converter,
Monitored through INTERNET using a SM6 www server ensuring also the archiving of measuring data.
Technical description
The LS1.1 watt-hour meter is equipped with dedicated 7-digit LCD with graphical symbols. As standard accessories there are: a pulse diode with a defined time-constant (imp/kWh), two-position switch, interface for data transmission in infrared communication.
The optional equipment of LS1.1 watt-hour meters consists of:
Interface for RS-485 serial transmission with MODBUS protocol
Interface for RS-232 serial transmission with MODBUS protocol
SRD radio-module (1E)
Optical interface acc. to EN62056-21
Extra functions
Display of customer code,
Display of the current date and real time,
Calendar of holidays,
Storage of annual program of the day division into time zones, separately for day-offs with the possibility of the change introduction by the opto-connector,
Automatic closing of account periods in the given day of the month at a defined time or on request,
Sequential display of measured quantities on the LCD display:
Active energy in time zones and summary,
Energy at the end of the account period in time zones and summary, date and time of the account period closing,
15 or 60 minutes’ maximal averaged power, with a time index,
Accumulated power.
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