It is intended for checking and calibration of reference standard power and energy meters, for calibration of precision current and voltage sources and for verification of electrical standard measurements and electricity meter test systems. The unit uses analogue – digital converters (ADCs) for its data acquisition, these being controlled and read by a digital signal processor (DSP).

The comparator may be directly connected to an external computer system over its RS 232 C serial interface. The comparator is distinguished by having very wide measuring ranges for all AC values while still being of accuracy class 0.01%:
Voltage: 30 V … 500 V
Current: 50 mA … 160 A.
In addition low currents from 1 mA are measured. Range selection may be made either manually or automatically. The advanced conception of the K 2006 Comparator
is based on our considerable previous experience of reference standard meters and comparators. The instrument is capable of measuring all principle parameters of a mains frequency network, from 15 to 70 Hz, and harmonics up to 3500 Hz. The basic accuracy of the system is 0.01%. The transfer error of the unit can be verified at any time by using an external DC reference voltage.

Features:
·Excellent price / performance ratio.
·Universal unit for many applications.
·One wide range input for each signal: Voltage:30 V – 500 V.
·Current: 1 mA – 160 A.
·High precision and long term stability.
·Can be used with computer system.
·Automatic range switching.
·Analogue – digital data acquisition with 6 x ADCs.
·Verification against D.C. reference voltage.
·Error calculator for test of reference standard meters.
·Harmonics measurement up to 32nd.
·Display of vector diagram or waveform.

K2008 is a three-phase comparator of accuracy class 0.005 (50ppm) with direct voltage and current inputs. It has been designed for universal laboratory and test applications and is intended for checking and the calibration of reference standards for electrical power and energy. In addition, it can be integrated into meter or reference standard test systems of highest accuracy.

Advantages

• Wide range voltage input 30 … 520 V (phase – neutral)
• Wide range current input 1 mA … 160 A
• DC standard input of 1 VDC / 10 VDC •Large 9” (800 x 480 pixels) TFT touch screen colour dis-play with graphical user interface
• Data transfer and communication via USB (Type B), ETHERNET or WLAN
• Data storage on removable SD memory card
• Two USB (type A) connectors for connection of periph-erals like mouse, keyboard
• Built in web server for remote display of graphical user interface and remote control of the unit

Functions

• Active, reactive and apparent power / energy measurement for three phase, 3- or 4-wire systems with inte-grated error calculator with 3 pulse inputs for testing of reference standards
• 3-phase electrical measurements, vectorial analysis, harmonic and waveform display
• 3 programmable pulse outputs (one electrical and optical) for calibration and integration in test systems
• Synchronisation inputs for sample frequency and signal period
• Verification against DC standards and frequency standards

The PRS 600.3 is a combination of a three-phase Portable Reference Standard of class 0.02% and an IEC 61000-4-30 Class A compatible Power Quality Analyzer with 3 voltage and 3 current
channels. The device is equipped with two 8.4” colors TFT displays based on touch screen operation. The Reference Standard is used to test single and three phase meters, instrument transformers and
installations on site. The Power Quality Analyzer is used as reference for PQ test systems, to resolve disputes at contractual applications, for statistical surveys, including EN 50160 reporting, and for online troubleshooting of different kind of power quality problems. The unit can be used with various types of clamp-on CTs and current and voltage sensors. Therefore, it is possible to easily and accurately
test both CT/PT and direct connected meters.

WORKING STANDARD – Functions
·Meter testing of pulse outputs (LED/disc mark/S0) and registers of active, reactive, apparent 1- or 3-phase, 3- or 4-wire energy meters with 3 pulse inputs and 3 pulse outputs.
·Measurement of electrical parameters (UI , PQS, f, PF) including vector diagram, harmonic analysis and wave form display.
·Instrument transformer testing (CT/PT burden, CT/PT ratio).
POWER QUALITY ANALYZER – Functions
In accordance with IEC 61000-4-30 Class A, IEC 62586-2, certified by ISO/IEC 17025 accredited laboratory NMi Certin B.
·Dips / Swells / Interruptions
·Harmonics / Interharmonics / Signal voltages
·Unbalance
·Under- and Overdeviation
·Rapid Voltage Changes RVC
·Flicker
·Transient capture  100s (26.7 kHz)

The PWS 2.3 GEnx Portable Test Calibration and Instrument is a three-phase portable meter tester with an accuracy class of 0.1%, which is used to test single-phase and three-phase electricity meters in the field. PWS 2.3 GEnx allows all meter installation parameters and related circuits to be controlled. Device December 1 to December 12 with direct connection in the range of 1mA to 12mA or 3 active 120A fault compensated EC set with UCT clamp in the range of 120A to 120A (included in the standard accessory set) can be used by using. For this reason, it is possible to test both the meters connected directly through the Current transformer and easily and accurately.

The PWS 3.3 is a combination of a three-phase Portable Working Standard of class 0.05% or 0.1% and an IEC 61000-4-30 Class A compatible Power Quality Analyzer with 3 voltage and 4 current channels.

Advantages

·Two instruments in one compact case
·Data transfer and communication via USB or ETHERNET
·Data storage on removable Compact Flash memory card

Measurement Inputs

·3 voltage inputs U1, U2, U3
·3 direct current inputs I1, I2, I3
·1 clamp-on CT current input for IN/IE
·2 clamp-on CT current inputs for I1, I2, I3