Meter Test Bench with 3 Positions

TST 3/3 Universal

General

The Test Bench is designed in an innovative way and is able to test meters with closed U-I link without Isolating Current Transformers (ICTs).

Each test position has its own 3-phase Current Generator and Energy Standard Class 0.04 or 0.02.

The Test Bench can test all types of electricity meters  – mechanical or electronic, single-phase or three-phase (Wye or Delta), for active, reactive or apparent energy.

Tests – Error, Register, Starting Current, No-Load, Constant, Maximum Demand, Load Only.

Components of the test bench

  • A Three-Phase Voltage Source “EE-350V-bench” with up to 350 Vac generation per phase

  • Three identical Modules “EE-120A-BENCH”, each comprising a 3-phase current generator in the range 1 mA to 120 A (100 VA per phase each) and a 3-phase Energy Standard Class 0.04 or 0.02

  • Meter Suspension Rack with 3 positions for hanging the meter, Scanning Heads with 3D Mechanical Support, IR Optical Reader, Tariffs, Panic Button, Lamp,

  • Error Indicator above each test position

  • PC with EE Software for automatic control, search in MySQL Database, print of Test Reports, export in Excel, Statistics

Advantages

  • Meter Tests with closed U-I links, no need of Isolating CTs or VTs

  • Overall Accuracy – ±0.04% or ±0.02%; No additional Error from ICTs or voltage drops

  • If a meter is missing, no need of re-connections, just switch off the Module

  • Very safe, simple, modular construction; easy for mounting, support and calibration

  • The needed output power for the current generator is twice less, compared with conventional Benches, because of the short cables and lack of Isolating CTs

  • Meters with different constant can be tested on each test position

  • Automatic reading of the meter registers with IR Head, according to IEC 62056-21

  • Export of Test Results in Excel

  • Statistics – up to 10 repeats, calculation of Average Error, Standard Deviation