11
3 Meter modifications
3.1 Modifications
Meter G1B is multi-tariff meter (measures active and reactive energy).
Detailed explanation of meter modification is presented in Table 3-1.
Table 3-1 GAMA 100 meter modifications
Type explanation example:
XXX.
G1B.
X
1
X
5
X
2
Construction
G1B (LCD, multi-tariff, active energy or active and reactive energy, max demand, extended
functionality)
G1B
Accuracy class
A (EN 50470-3), 2.0 (IEC 62053-21)
0
B (EN 50470-3), 1.0 (IEC 62053-21)
1
Measurement circuits
1 elements, 2 wire
5
2 elements (current measurement in neutral), 2 wire
6
In/Imax, Iref/Imax
1:8
0
1:10
1
1:12
2
1:16
3
1:20
4
Example: G1B.152 is G1B construction meter that conforms to the requirements of accuracy class B and 1.0. Meter is
designated for measurement of energy in 2 wire alternate current networks; it has 1 measurement element. It is direct-
connected meter with maximum current up to 60 A. Ratio of reference current and maximum current is 1:12.
3.2 Technical specifications
Table 3-2 Technical specifications
Accuracy class:
Active energy measurement
B (EN 50470-3), 1.0 (IEC 62053-21)
Reactive energy measurement
2.0 (IEC 62053-23)
Reference voltage U
n
, V:
See Table 4-2
Operating voltage range, % from U
n
:
-20... +15
Reference I
ref
(maximum I
max
) current, A:
See Table 3-1 and Table 4-2
Starting current, % from I
ref
:
0,4 (class B)
Reference frequency, Hz:
50
Power consumption, VA:
In voltage circuits
<1.0 VA (<0.5 W)
<4.0 VA (<1.3 W) with +5V power
supply for external modem
<10 VA (<1.0 W) with PLC module
<10 VA (<1.3 W) with PLC and wired
MBus modules
<10 VA (<2.2 W) with PLC and wireless
MBus modules
In current circuits
< 0,05
Meter constant, imp/kWh, imp/kvarh:
50T150000
Internal clock (IEC 62052-21, IEC 62054-21):
Error
< 0,5 s/24 h (T=23°C),
< 0,15 s/°C/24 h
Backup power supply for clock
Li-ion battery and/or supercapacitor
Operation duration using only backup power supply (Li-ion battery)
> 10 years
Tariff module functions:
Number of energy tariffs
Programmable (T1 T T6)
“Emergency” tariff
Programmable (T1 T T6)
Number of maximum demand tariffs
Programmable (M1 T M6)
Data storage duration when voltage disconnected
>20 years
S0 outputs (IEC 62053-31):
Number
1
Output constant, imp/kWh (imp/kvarh)
50T150000
Summary of Contents for G1B Series
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