Portable Working Standard PWS 2.3 PLUS Portable Working Standard

Advantages / Benefits U, I, P, Q, S, , cos, f, ... measurements Vector diagram Burden measurements Ratio test of C.T.´s and P.T´s U, I, P, Q, S, , cos, f, ... measurements Print functions Meter error measurements Memory functions Harmonics measurement

Advantages / Benefits Robust rubber protected housing Supply from measurement circuits or auxiliary supply Data memory for test results and customer data Wide measuring range with auto ranging Automatic clamp detection Small dimensions and light in weight Advantages / Benefits

Reduction of annual losses caused by circuit & wiring problems  faulty wirings are at the expense of the supplier / utility Service-orientated handling of customer complaints with presence and consultation Short reaction time on customer complaints Reduced expenses of complaints (fast and on-site) Putting-into-operation tests to eliminate faulty wirings Periodical tests after changes in wiring to ensure a correct performance of the installation Sampling tests of contractors for metering Why to use

Energy utilities / suppliers in metering and service departments Contractors in metering and transformer sector Metrological laboratories and institutes Industry with large number of meters and measuring transformers (airports, exhibitions areas, …) Manufacturers of meters Where to use

Technical data Basic Characteristics 20 mV ... 300 V (phase-neutral) 1 mA ... 12 A direct connection 1 mA ... 100 A via clamp-on CTs Measurements of all electrical parameters (incl. vector diagram) CT / PT testing (burden, ratio) Accuracy  0.1 %,  0.2 % Options: CALSOFT I Software Clamp-on CTs for 1000A  LEMflex© up to 3000A  LiteWire Sensors up to 2000 A and 40 kV

Connections Top view [1] Current outputs I1*, I2*, I3* [5] Connection for clip-on CT’s [2] Current inputs I1, I2, I3 [6] Impulse output [3] Voltages connection U1, U2, U3 [7] Impulse input [4] Neutral connection for voltage N

Connections Bottom view [8] Serial Interface RS 232 C [9] Sockets for supply from [10] Auxiliary supply connector measurement circuits

Optional current clamps to the PWS 2.3 PLUS Error compensated clamp-on CT’s for measurements in the range up to 100 A Clamp-on CT’s for measurements in the range up to 1000 A Flexible current transformers LEMflex for measurements up to 30 / 300 / 3000 A Hot sticks for measurement on high voltage potential - AmpLiteWire up to 2000 A - VoltLiteWire up to 40 kV

Operation Concept Display Symbols Control Keys   

Software Status Indications

Software Main Menu Meter Test / Error Measurement Measurement, Harmonics, Oscilloscope, Vector Analysis, Circuit testing Transformer Test, Burden & Ratio Energy Measurement, Dial Test Installation (Setup)

Software Error Measurement

Software Measurement of load values UI, power values PQS and display of vector diagram

Software Harmonic Analysis and Waveform display

Software Energy measurement, test of the energy register error and maximum demand

Software Burden measurement of voltage and current transformer

Software Current transformer ratio measurement

Software Administrative data set (ADS)

Software Examples of test results

Software Example of printouts

Windows©-Software CALSOFT Selection of real time readout or readout of sets of data from PWS 2.3 PLUS memory