Four positions Meter Test Bench

  • Product No:TB40
  • Manufacturer: Calmet Ltd.

The Calmet TB40 Four Position Meter Test Bench is used for calibration and testing of single and three phase electromechanical and electronic active and reactive electricity meters and portable test equipment.

The TB40 Test Bench comprises:

• three phase voltage and current power source with internal reference 0.05 or 0.02 accuracy class. Three phase power source generates voltage up to 560V and current up to 120A with programmable shapes, frequency in 40…500Hz range and phase shifts in 0…360° range,

• four position testing stand with photo scanning heads and cables,

• eight inputs multiplexer for received impulses from scanning heads,

• PC with Mpx8 PC software and Calpro 300 software.

The TB40 Test Bench, using Mpx8 PC software, performs the following automatic and simultaneous tests of 4 electricity meters:

• measure the basic error characteristics and repeatability,

• checking the starting current,

• checking the no-load run,

• measure the influence of frequency, voltage, self-heating, distortion and special shapes of currents and voltages, reversed phase sequence,

• checking the impulse output and energy meter counter,

• checking the maximum power indicator.

The TB40 Test Bench, using Calpro 300 software, enables additionally to test the following devices:

• protection relays,

• current transformers,

• current clamps,

• measurement transducers,

• Power Quality measurement devices.

The TB40 Test Bench employs modern precision power source with internal reference without need to use additional external reference energy meter with additional cables. By this conception of the TB40 Test Bench may be achieved simultaneously extremely compact size, light weight, high metrological properties at reasonable price. The TB40 Test Bench is controlled by means of personal computer with installed Mpx8 PC software and Calpro 300 software in Windows operating system.


Power source with reference



Parameter


Setting range


Accuracy 1)3)


Stability/1h 1)3)



Maximum Load





Voltage U


30.0000...560.000V


0.05%


0.01%




30VA per phase






0.5000…30.000


0.05%*


0.01%*
















Current I


0.050000...120.000A


0.05%


0.01%

5)



80VA per phase






0.005000…0.050


0.05%*


0.01%*
















Frequency f


40.000...99.999Hz


0.002Hz












100.000...500.000Hz


0.01Hz
























Phase shift


0.00... 360.00

2)

2)










0.1


0.03









Active Power P


0...3x50000.0W


0.05%  2)


0.01%  2)







Reactive Power Q


0...3x50000.0var


0.05%  2)


0.01%  2)







Apparent Power S


0...3x50000.0VA


0.05%  2)


0.01%  2)







Time


1...36000s


0.01%   0.001s











(for energy dosage)



























Energy

calc. from settings of power and   time


0.05%  2)


0.01%

2)








Distortion U   and I



0.1%













0…100%   and   0…3




independent superposition of   harmonic





Harmonics


4)

components in   each phase of current and






up to 31st or 3200Hz


0.02% and  0.5












voltage

















Special shapes


Phase Fired and Burst acc. to   EN50470









Power supply


single phase 230V 10%   /     45…65Hz   /   900VA     acc.   to  IE





Dimensions and weight


(width 530 x height 200 x depth   560)mm and 32kg






Testing stand















Test rack


Four position test rack is made of   light aluminum profiles







dimensions (width 1260 x height   1600 x depth 550)mm and weight 50kg











Set of cables


Set of safety   voltage cables (16 units), set of safety current cables up to 20A (15 units)   and up to 120A






(15 units), and   set of accessories for safety cables (56 units)













Photo scanning heads
















Photo scanning heads type CF106H (4   units) which detect the disc movement or the LED flash of the meter





Multiplexer















Impulse input


Eight impulse   inputs INL 0...2V, INH 4...27V up to 200kHz






Power supply



9…12…18V   and    1A@12V






Dimensions and weight


(width 290 x   height 70 x depth 200)mm and 1.3kg with cables





1)

–% - related to the measuring   value, %* - related to the measuring final value



2)

–in   0.05…120A     current   range   and     in   30…560V   voltage     range   an



3)

–power end energy errors related to apparent power



4)

–0.02% of output and 0.5  for 2nd harmonic with linear rise up to 0.10% of output and   2  for 31st harmonic



5)

–0.01% for I 20A with linear rise   up to 0.03% for I=120A