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GAMA300 balance G3G

High quality level

Reliability

Wide functionality range

Data security assurance

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Features
Technical specifications
Product brochure

Transformer connection electricity meter G3G is recommended for operations in transformer substations, because meter measures not only active [kWh], reactive [kvarh] and apparent [kVAh] energies in both consumption and generation directions, but also stores the measurement data profiles (accounting, load and voltage profiles, event logs) and registers the qualitative electrical energy indicators. Voltage fluctuations, voltage harmonic distortion coefficient (THD), three-phase network disbalance and voltage flicker are registered in accordance with EN 61000-4-30 for Class B equipment. In addition, the meter estimates electricity losses both on the transmission line (I2t measurements) and in the power transformer (U2t measurements). Electricity meter interfaces (Ethernet, RS485, optical) support DLMS / COSEM communication protocol, therefore the G3G meter is compatible with equipment of other manufacturers and can work in the automated meter reading systems operating on TCP / IPv4 and HDLC communication networks. The meter is capable of communicating in encryption and authentication mode (AES-128, GCM), which ensures secure data exchange in a common system.

Active (bi-directional), reactive (4-quadrant) and apparent (bi-directional) energy measurements

Accuracy class 0.5s (IEC 62053-22) or C (EN 50470-3)

Single or Multi-tariff

Internal real time clock

Load, billing and voltage profiles, instantaneous values

Expanded protection against unauthorized actions

Event logbook (influence of magnetic field, opening of meter cover, opening of terminal cover, clock setting, parameter change, internal error, firmware update, unauthorized request, voltage deviations)

Optical and electrical communication interfaces in accordance with DLMS/COSEM

Ethernet interface (10BASE-T/100BASE-TX) in accordance with DLMS/COSEM (TCP/IP; IPv4)

RS485 interface (9600 ... 115200 bps) in accordance with DLMS/COSEM (HDLC)

High-level security (encryption and authentication) (AES-128, GCM)

External power supply input (+24 Vdc)

Voltage quality monitoring: voltage deviation, harmonic distortion coefficient (THD), three-phase network disbalance, flicker in accordance with EN 61000-4-30 class B

Weekly reports on voltage quality indicators

Registration of line and transformer losses on the basis of I²h and U²h measurements

Connection type	Three-phase 4-wire via current transformer
Accuracy class: -for active energy -for reactive energy
	0.5s (IEC 62053-22), C (EN 50470-3)
	2.0 (IEC 62053-23)

Reference voltage V: -4-wire connection -multi-range connection
	3x220/380; 3x230/400;
	3x57,7/100…230/400

Reference (max) current, Ib (Imax):
-transformer connection	5(6) A; 5(10) A

Starting current	0,1% Ib
Reference frequency, Hz	50
Meter constant, imp/kWh, imp/kVArh	10000 (transformer connection)
Power consumption per phase: -In voltage circuit -In current circuit
	<2.7 VA (<1 W)
	< 0,05 VA
Temperature range:	-40°C to +70°C
Internal real-time clock accuracy	< 0,5 s/24 h (T = 23 °C)
Backup power supply of clock	Li-ion battery and/or Super Cap
Operation duration using only backup: -Li-ion battery -Super Cap	> 12 years > 7 days
Frequency measurement accuracy and range	±0,05Hz ; [42,5 … 57,5] Hz
Voltage (RMS) measurement accuracy and range	±1% ; [46…276] V
Voltage harmonic distortion coefficient (THD) measurement accuracy and range	±1% (THD) ; [0 … 15] % (THD)
Three-phase network disbalance measurement accuracy and range	±0.3% u_N ; [0 … 5]% u_N u_N– negative sequence component
Voltage flicker measurement accuracy and range	±20% P_st ; [0.4…4] Pst
Case and dimensions
Case	UV stabilized polycarbonate
Insulation	Protective class II
Protection class	IP53 (Optional IP54)
Dimensions, mm	260 x 175 x 80
Weight, kg	1,5

G3G meter brochure