SET-1Ì.01Ì

PURPOSE AND SCOPE OF APPLICATION

    Meters are designed for accounting of active and reactive energy of direct and reverse direction in single-phase alternating current networks.
    Electric power meters allow to meter parameters of single-phase network via two channels and may be used as meters or sensors of parameters with normalized metrological characteristics.
Electric power meters may be operated at alternating current electric motive power under traction condition and in recuperating mode.
    Electric power meters are designed for self-contained operation or operation in the composition of automated electric power control and metering (AEPCM), automated dispatch control systems (ASCS), automated system for recording of alternating current flow and automatic guidance parameters (RACFAGP).

ELECTRIC POWER METER REGULATORY GROUNDWORK

IEC 62052-11:2003

TECHNICAL FEATURES OF ELECTRIC POWER METER

• Three equal priority independent isolated communication interfaces with equal priority: RS-485, CAN and optical interface.
• Via communication interface RS-485 and optoport electric power meters support ModBus-like, SET-4ÒÌ.02-compatible protocol .
• Four integrated by plus test outputs.
•  Possibility of transformer connection to current network and transformer or direct voltage connection.
• Access to electric power meter parameters and data from communication interfaces is protected by passwords for reading and programming.
• Metrological coefficients and factory parameters are protected by hardware jumper  and inaccessible without seal opening.

FUNCTIONAL CAPABILITIES OF ELECTRIC POWER METER

Electric power meter networking
Electric power meter networking is provided via voltage and current metering transformers. Direct electric power meter connection to voltage network with rated voltage values: 100, 120, 127, 173, 190, 200, 220, 230 V is allowed.
    Electric power meters have separate (isolated) voltage paths of measurement and supply, may be connected to metering network according to schematic of collective and independent measurement and supply voltage paths.
    In case of independent measurement and supply circuit connection electric power meter indicators and communication interfaces function, when supply voltage is available and metering network voltage is not available.

Energy accounting
    Electric power meters provide independent (separate) accounting in each current measuring channel (for electric power meters with two measuring and accounting channels) of active and reactive energy of accrued total in direct and reverse directions (4 accounting channels).

Measurement of network parameters
        Electric power meters measure instantaneous values (with programmed integration time from 0.2 to 0.5 seconds) of physical quantities, characterizing single-phase electric network in two measuring channels and may be used as parameter meters or sensors in each measuring channel.

• active, reactive and gross power;
• voltage and voltage waveform distortion factor;
• current and current waveform distortion factor;
• active power factor;
• network frequency;
• temperature inside electric power meter body.

Test outputs and calibration mode on input
Four integrated by plus test outputs of main transfer device function in electric power meters.
Each test output may be configured for forming of telemetering pulses in one of channels for energy accounting (active, reactive , of direct and reverse direction) for the first and second current measuring channel and operate:

• in basic mode (A) with transmission ratio 5000 pulse/(kW·h), pulse/(kvar·h);
• in calibration mode (Â) with transmission ratio 160000 pulse/(kW·h), pulse/(kvar·h).

    Switching from basic telemetering mode (À) in to calibration mode (Â) is carried out with the aid of voltage, applied to calibration mode on input.

Display device
Electric power meters have liquid-crystal display (LCD) for representation of accounted energy and measured values, one (for single-channel meters) and two (for double-channel meters) display mode control buttons.
    Electric power meters in mode of basic parameters display allow to display the following for each measuring and accounting channel:

• current active and reactive energy of accrued total in current direction;
• accounted active and reactive energy of accrued total in direct and reverse direction.

 Electric power meters in auxiliary parameter display mode allow to display the following data of auxiliary measurement modes:

• active power,W;
• reactive power, var.;
• gross power, VA;
• voltage, V;
• current, À;
• network frequency, Hz
• power factor;
• temperature inside electric power meter, °Ñ.

    All data of basic and auxiliary measurement modes are displayed with account of entered into electric power meters transformation voltage and current ratios for each measuring channel.

Communication interfaces
Electric power meters provide possibility to program the following parameters from external computer via interface RS-485 or optical port:

• network address;
• password of the first and second levels of data access;
• rates of exchange via interface RS-485;
• rates of exchange via interface CAN and period of data output to CAN;
• numbers of powerhouse and section numbers (name of accounting point);
• current transformation ratio;
• period of data output to display;
• programmable indicators;
• test output configuration;
• electric power meter identification.

    Electric power meters provide possibility to control the following from external computer via interface RS-485 or optoport:

• display mode;
• accounted energy register reset;
• recording of auxiliary measurement mode data;
• restart of electric power meter;
• electric power meter startup.

    Electric power meters provide possibility to read the following parameters and data by external computer via interface RS-485 or optoport:

• electric power meter serial number and date of manufacture;
• network address;
• numbers of powerhouse and section numbers (name of accounting point);
• current transformation ratio value;
• accounted active and reactive energy of direct and reverse direction ;
• current values of active and reactive energy of direct and reverse direction;
• instantaneous values of active, reactive and gross power;
• voltage, current and power factor;
• network frequency;
• temperature inside electric power meter;
• electric power meter software version;
• electric power meter status word;
• programmable indicators;
• electric power meter version;
• display mode and period of data output to display;
• exchange rate via CAN and period of data output into CAN;
• exchange rate via RS-485;
• electric power meter identification;
• test output configuration.

    Electric power meters may be operated via communication interfaces with application of software Configurator SET-4TM.
   Electric power meters with CAN-interface provide data exchange with 11 and 29-bit identifiers in compliance with CAN Specification version 2.0 Part B.
Electric power meters with CAN-interface provide reading and updating of object identifier via CAN-interface with the aid of SS protocol according to standard DSP305.

TECHNICAL SPECIFICATIONS OF ELECTRIC POWER METER

ELECTRIC POWER METER VERSIONS