AMT B1x-OxxTEI for active and reactive energy measuring, single- and double-rate, up to 100 A

Three-phase static electricity meters AMT B1x-OxxTEI are determined for direct and indirect measurement of active and reactive energy with measured consumption displaying on LCD. They are manufactured in single-rate and double-rate versions with external switching of rates. The measured values are stored into special registers according to the OBIS codes. They are displayed on LCD in cyclic or step mode. The data are stored in non-volatile memory during power outage. The performance of internal circuits is monitored during the operation of a meter and the statuses are stored in the particular registers. The content of registers can be displayed. The test pulses indicated by red LED are proportional to the consumed energy. The meters can be produced in version with measurement in summary mode (measurement „using an unidirectional mechanical register“) or with measurement in separation mode (measurement of “consumption – supply”).


  • Passive transmitting pulse SO output for remote transmission;
  • Energy, voltage and current measurement;
  • Event records (about influence of magnetic field, missing voltage, covers removal,...) – number of events;
  • Welded case on a customer requirement;
  • Complies with IEC/EN 62052-11, IEC/EN 62053-21; EN 50470-1, EN 50470-3 and with requirements of European Parliament and EC Directive 2014/32/EU (MID);
  • It is supplied initially verificated for billing measurement.

Technical data

Precision class – active energy A, B, C (MID), 2, 1, 0,5S
Precision class – reactive energy 3 and 2
Reference voltage [V] 3 x 220/380, 3 x 230/400
3 x 240/415, 3 x 120/208,
Refer. frequency [Hz] 50 or 60
Refer. current Iref [A]
direct connection
5 and 10
Nominal current In [A]
indirect connection

Transient current Itr [A]
direct/indirect connection
0,5 and 1 / 0,25
Starting current Ist [A]
direct/indirect connection
≤ 0,02 and 0,04 / 0,01
Minimal current Imin [A]
direct/indirect connection
0,25 and 0,5 / 0,05
Maximal current Imax [A]
direct/indirect connection
Power consumption - voltage circuit  [VA/W] ≤ 1/0,4
Power consumption - current circuit  [VA] ≤ 0,1 
Impulse constant for test output kTO [imp/kWh]
1000, 5 000
Impulse constant for impulse output kSO [imp/kWh]
1000, 5 000
Transistor output SO 24 V / 30 mA
Operating temperature -40 °C up to +70 °C
Mean temperature coefficient [%/K] ≤ 0,02
Terminals current ; voltage ; auxiliary [mm] ø 8 ; ø 3 ; ø 3 
Degree of protection IP54
Fixing holes distance - w x h [mm] 150 x 215-230
Meter dimensions - w x h/h´x d [mm] 177 x 187/251 x 60
Weight [kg] ≤ 1,12