DESCRIPTION
The Working Standard WS 2×20 is a single-phase (WS 2120) and three-phase (WS 2320) precision reference meter for electrical power and energy measurement, dedicated to on-site meters testing. The device can be used also as hand-held unit for local data exchange with smart meters (programming and data readout of meters). The device is designed for operation in single, two and three-phase systems, where it evaluates and displays all individual quantities per phase and cumulative three- phase ones as well. Universal inputs can be equipped with any combination of interchangeable precision voltage sensors working up to 600 V and current sensors working up to 6000 A or more. Measurement is based on precision A/D conversion and DSP technology and enables accurate high-speed real time evaluation of all main and informative quantities. Beyond measurement of power, voltage, current and phase the device indicates voltage sequence, evaluates active, reactive and apparent energy and measures distortion and wave-form of measured signals.
Key Features
Lightweight compact size
Single- and three-phase versions, accuracy classes 0.2, 0.1, 0.05, 0.02
Color graphic display and alphanumerical keypad
USB, RS-232 and optical interface for local data exchange with multi-functional meters according to IEC 62056-21
Configuration and data stored in high capacity memory (min. 2 GB)
Vector diagram and signal shape display (oscilloscope mode)
Harmonics analysis in tabular and graphical format
LED and TTL impulse outputs with programmable energy proportional meter constant or programmable frequency
Enhanced internal database system for tested meters and measured results with search capabilities
Enhanced self-adjusting optical scanning head
Synchronous differential energy consumption measurement
Two universal input channels for any combination of Voltage and Current probes for Power or CT / VT ratio, phase and burden measurement
Optional wireless communication interface and wireless scanning head network for simultaneous testing of multiple delivery nodes
Enhanced fast synchronization of measured data and configuration with PC
PC software for MS Windows
Transport case with high protection degree
Optional portable printer for printing of results and actual display content
Optional universal isolated input/output (relay, logic signal)
Configurable user interface (regional and functional modifications)
