Close-Link Three Phase Energy Meters Test Bench with Isolated CT for 24 Positions

Description

First steps in the production of fully electronic automatic electricity meter calibration systems were made 10 years ago by KAIPU. The system described and offered here comprises components based on most modern technologies. It therefore combines long term experience in this field with the application of state of the art technology.The recently developed new software is based on KAIPU ’s historical experience in providing various testing solution to numbers of manufacturers, Utility companies, Metrological institutes etc.

^{Technical specification}

Power supply: 220V+10%, 50Hz/60Hz
Maximum power consumption: 1000VA (reference for 24 positions)

Features

The offered universal meter testing equipment is designed for the simultaneous testing,
adjustment and certification of meters.
The following electricity meters of the accuracy classes 0.2, 0.5, 1 and 2 can be tested:
*2 wire-, 3 wire- and 4 wire meters for active and reactive energy (true and cross-connected),

The test system incorporates a completely electronic test current- and test voltage
generation. The working standard is a wide range substandard meter directly connected to the test circuit.

A PC system controls the test system and supervises the test procedure. The actual
values of test voltage and -current and the errors of the meters under test are displayed on the monitor. The errors of the meters are indicated additionally on error displays at each measuring position.

Structure and main parts

  Error calculator    

Bracket(socket) for tested meter

  RS485 Communication Port

  pulse input

  power switch

 Power on for amplifier

 Power off for amplifier

 signal generator

 three phase reference meter

 voltage output from power source

 current shortcut(In this test bench, when worker use meter position 1 - meter position 8, the             above 3 current shortcut should be closed and the under 2 current shortcut should be open.    

      When worker use meter position 9 - meter position 16, the above 3 current shortcut should be

      open and the under 2 current shortcut should be closed. )

 amplifier (voltage & current)

 range shifter (voltage & current)