New meter GAMA 300 is developed for a very rapidly changing electricity market, adapted to deregulation and customers' growing demands. Electronic electricity meter GAMA 300 operates in three-phase electricity networks and is approved in accordance with the standards IEC 62052-11, IEC 62053-21, IEC 62053-23, EN 50470-1 and EN 50470-3. The electricity meter satisfies the requirements of Directive 2004/22/EC of the European Parliament and of the Council of 31 March 2004 on measuring instruments.
Meter has optical and electrical communication interfaces and additionally can be equipped with internal communication modules upon request, allowing easy connection of meters to AMR system directly. GAMA 300 meter can have changeable (without uninstalling meter from site) Li-ion battery and internal relay for remote user disconnection.

Meter operates in three-phase electricity networks and measures:

Meter GAMA 300 can be single-tariff or multi-tariff. Multi-tariff modification of the meter GAMA 300 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 fixed and 16 movable days;
Number of maximum demand tariffs	Up to 4 tariffs;
"Emergency" tariff	Programmable.

At the end of the billing period, the billing period reset signal triggers the storage of the current values to the non-volatile memory. The billing period reset may be initiated:

Manually:	by pressing push-button;
Automatically (programmable):	on decade days; on ½ month; on predefined day

GAMA 300 meter has non-volatile memory, which allows to store metering data without influence of power outages. Capacity of stored data:

In order to help utilities and customers to meet deregulated market needs, meter GAMA 300 can have load profiles:

Meter has optical communication interface in accordance with IEC62056-21 or DLMS. Optical communication interface allows the user to read data and program meter in the field or in the workshop. GAMA 300 meter can have up to two electrical communication interfaces, allowing connection of meters to AMR system through external GSM/GPRS, RF, PSTN and LAN controllers:

Primary electrical communication interface:

• 20 mA current loop (protocols: IEC 62056-21 or IEC 62056-31 or DLMS)

[Optional] available auxiliary electrical communication interfaces:

• 20 mA current loop (protocol IEC 62056-31 or DLMS)
• RS485 (protocol IEC 62056-31 or DLMS)
• RS232 (protocol IEC 62056-31 or DLMS)
• M-bus (protocol M-bus) for retrieving data from Water, Gas, Heat meters

[Optional] Also meter can have internal GSM/GPRS or RF communication modems, allowing connection of meters directly to AMR system.

Up to 4 electric pulse outputs (S0);

Up to 2 LED test outputs [Optional];

Clock synchronization input [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).

Internal disconnection relay is used to disconnect/reconnect electricity to the user. User disconnection may be done by the following means:

Automatically when contractual power limit is exceeded;

By external signal through communication interfaces.
The user himself does reconnection by pressing a scroll-push button on the meter. This ensures maximum safety to the user.

Hardware protection allows only authorized persons to access meter:

Two seals on main cover;

Two seals on terminal cover;

Improved resistance to permanent magnetic field;

Seal on battery cover;

[Optional] Sealed optical communication interface unblocking.

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:

GAMA 300 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: