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Summarize
FYLTS-3a Three-phase Watt-hour Meter Test Bench is semi-automatic equipment designed according to the national standards and regulations. This device is composed of three power source, three wide-range standard power watt-hour meters and error calculator. 3 to 32 watt-hour meters (1.0 and below) may be tested at one time, and three or single phase electronic or inductive watt-hour meters are all feasible. It is of high accuracy, wide range and can be easily operated.
Main technical parameters
1 Accuracy of test bench: 0.1/0.2
Accuracy of standard meter: 0.1/0.2
2Accuracy of monitoring meter (digital displayed):
Voltage/current/power meter: 0.5%
(Equipped with electronic compensated voltage power source)
3Input voltage: AC 3*380V/220V 50Hz
4Straight current range of regulation: 150mA\A? a% 0~120% continuously
5Adjustment range & step as per the attached table

Main Function and Characteristic
1 There is large improvement compared electrician source of the device with traditional source:
Three-phase symmetrical isolation transformer for voltage symmetrical adjustment; Having a hand-combined with the scope of the adjustment; With the characteristic of wide-range adjustment, good symmetry of the output voltage and high-stability.
2 Use the two-pole rising for current part; Reduce the influence of input voltage undulation to the current stability; Overcome the bad characteristic of stability of the former electrician source.
3 Safe index:
Insulation resistance: voltage return to current return, all returns to cover are more than 10MIc
Electric compression test: all circuit to cover and circuits are more than 2kV/1min
4 Add the input high-frequency pulse of three single-phase standard meters as the three-phase standard of the meter...
5 Matched with the wide-range standard meter and just placed the constants of the checked meter(also should placed connection factor for checking non-power meter), then we can examine in the scope of whole measuring range. The results will be input the computer through interfaces.