●The equipment supports the automatically test of smart energy meter and multifunction meter (Direct connected type and CT/PT installation type).

●The equipment supports the test of import/export active/reactive energy and four phase reactive energy.

●The equipment supports the testing of meters with different constant, accuracy and communication protocol at same time.

●Each test position has independent error display window, the accuracy displayed can be configured.

●The device supports the keyboard manual operation.

●The test software supports multiple level management authority and many kinds of weekly inspection plan.

●The test software supports multiple testing plan, which can be copy, modify, storage and delete at will.

●The test software supports multiple influence quantity test plan.

●The test software supports pause, continue operation and breakpoint continuation.

●The test software supports the storage, copy, print, upload and remote control of the test result.

         ○Starting power testing error is no more than ±5%.

○The deviation between the test error of each table and its average value shall not exceed the value specified in the following table for the same batch of specimens being tested at the same test site. 

○For the same batch of specimens being tested at the same test site, repeat the test at load point with load current is Ib, power constant is 1.0 and 0.5L, the total value of the maximum error changing between two neighbour test result should be no more than 0.2%.

○The tolerance error changing caused by the voltage changing from 0.8Un to 1.15Un should not exceed the three times of the limitation. 

○The changing ratio of daily timing error of the meter under test should be no more than 0.1s/d℃.