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 |