en - Products / Solutions - Electricity meters

EMS

EMS (Multifunctional)

Versatile and reliable three-phase electronic electricity meter EMS provides a wide range of modifications: from simple to multifunctional. Meter can be customized for use almost in all areas: residential, commercial or industry. Meter EMS measures either active or active and reactive electrical energy and is approved in accordance with IEC 62052-11, IEC 62053-21 and IEC 62053-23. Upon request meter can be provided with maximum demand registration, instantaneous values measurement, load profile recording. There is also a possibility to connect meter to AMR system.

Features:

Measuring

Meter operates in three-phase electricity networks and measures:

Active energy (bi-directional or unidirectional) with accuracy class 1 or 2 (IEC 62053-21) or
Active energy (unidirectional) with accuracy class 1 (IEC 62053-21) and reactive energy (import-export) with accuracy class 2 (IEC 62053-23)
Maximum Demand with date & time in meters with internal clock
[Optional] Load profiles
[Optional] Instantaneous values (A, V, kW, kVAr) of each phase

Tariff module

Multifunctional meter EMS has internal real-time clock with Li-ion or Super-cap backup and complex tariff structure (Time-Of-Use):

Number of energy tariffs	Up to 4 tariffs;
Number of seasons	Up to 12-tariff seasons;
Number of week profiles	Up to 10-week profiles;
Number of day profiles	Up to 16-day profiles;
Special days	Up to 365 permanent and 16 movable days;
Number of maximum demand tariffs	Up to 4 tariffs.

Data storage

EMS meter has non-volatile memory, which allows to store metering data without influence of power outages. Capacity of stored data:

Total energy	from installation date;
Monthly energy	of last 16 months;
Daily maximum demand values	up to 480 days;
Monthly maximum demand values	of last 12 months;
Events logbook records	up to 32 records of each event type;
[Optional] load profiles	up to 3 channels.

Load Profiles [Optional]

In order to help utilities and customers to meet deregulated market needs, meter EMS can have load profiles:

Load profiles capacity	up to 252 days with integration period 60 minutes;
Programmable integration period	5, 10, 15, 20, 30 or 60 min.

Communications

Meter has optical communication interface in accordance with IEC62056-21. Optical communication interface allows the user to read data and program meter in the field or in the workshop.
EMS meter has electrical communication interface (20 mA current loop or RS485) with protocol in accordance with IEC 62056-21 or IEC 62056-31, allowing connection of meters to AMR system through external GSM/GPRS, RF, PSTN, and LAN controllers.

Outputs

Up to 3 electric pulse outputs (S0)

Up to 2 LED test outputs

[Optional] Relay, normally open contacts are connected:

When specified energy tariff is valid;
For two programmed periods during the 24-hour interval (periods are set in 15 minutes step).

Security features

Hardware protection allows only authorized persons to access meter:

Two seals on main cover;

Two seals on terminal cover;

[Optional] optical communication interface sealing.

Software protection allows only authorized persons to program meter with software for meter programming and data reading:

Meters programming feature is protected by a password; if incorrect password is entered four times in a day, the password acceptance will be locked for 24 hours. During that period meter programming is impossible.

Meter with internal clock has Events logbook, registering the following events:

Power outages	total #, last 32 events with date & time;
Phase sequence change	last 10 events with date & time;
Missing of any phase voltage	last 10 events with date & time;
Meter programming	last event with date & time;
Magnetic field influence	total #, duration, last event with date & time;
Reverse current flow	duration, last event with date & time;
[Optional] main cover openings	last event with date & time;
[Optional] cover openings	total #, duration, last event with date & time.

Display

EMS meter is equipped with LCD (Liquid crystal display). LCD contains 8 digits with programmable decimal point: 8-5 for whole numbers and 0-3 digits for decimal numbers. LCD displays majority of data accumulated in meter and parameterization constants. Features:

Cyclic (automatic) and static (manual) data scroll;

Data indication on LCD during power outages;

Reverse current flow indication;

Energy direction, load quadrant, phase sequence indicator;

Li-ion battery (Super-cap) status indication;

Menu control by push-button or [optional] light signals

Technical Specification:

Ratings
System	Three-phase 4-wire or 3-wire
Accuracy class: For active energy For reactive energy	Class 1.0 or Class 2.0 Class 2.0
Reference voltage, Un: 4 wire networks 3 wire networks	3x57,7/100; 3x63,5/110; 3x69,2/120; 3x120/208; 3x127/220; 3x220/380; 3x230/400 3x100; 3x110; 3x220; 3x230; 3x120
Reference (max.) current, Ib (Imax): Direct connection, A CT or CT/VT connection, A	5(60); 5(80); 10(60); 10(100); 5(100) 1(1,2); 5(6); 5(10)
Current threshold	0,4% Ib (0,2% In if CT or CT/VT connection)
Reference Frequency, Hz	50 or 60
Meter constant, imp/kWh	500 or 1000 (direct connection), 5000 or 10000 (CT or CT/VT connection)
Power consumption: In voltage circuit In current circuit	< 0,5 W; < 1 VA < 0,05 VA (< 0,5 VA if CT or CT/VT connection)
Temperature ranges: Meter operating Meter storage	-40°C to +60°C -50°C to +70°C
Internal real-time clock
Accuracy	< 0,5 s/24 h (T = 23 °C)
Backup power supply	Li-ion battery or Super Cap (rechargeable)
Operation duration using only backup: Li-ion battery Super Cap	> 16 years > 7 days
Case & Dimensions
Case	UV stabilized polycarbonate
Insulation	Protective class II
Degree of protection	IP51
Dimensions, mm	325 x 177 x 55
Weight, kg	< 1,5

Downloads:
Product brochure

More information about the meter available to download can be found here

Other products >>