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. V.
• Dips / Swells / Interruptions
• Harmonics / Interharmonics / Signal voltages
• Unbalance
• Under- and Overdeviation
• Rapid Voltage Changes RVC
• Flicker
• Transient capture  100s (26.7 kHz)

The SRS 121.3 three-phase, electronic reference standard in 0.05 accuracy class for use in meter test systems.

Key features of the SRS 121.3
• Three-phase reference standard
• Precision measurement unit for AC values in the frequency range of 45 to 70 Hz
• Simultaneous availability of the measured values over the RS 232 C serial line interface
• Test of two, three and four-wire meters
• Integrated measurement connection mode switching
• Easy operation due to the use of processor technology
• Operation verification with error indication
• Integrated RS 232C serial line interface for data transmission and programmed operation using an external computer
• Current and voltage ranges:
30 V to 520 V, 1 mA to 120 A

The SRS 121.3 / 200 A three-phase, electronic reference standard in 0.05 accuracy class for use in meter test systems.

Key features of the SRS 121.3
• Three-phase reference standard
• Precision measurement unit for AC values in the frequency range of 45 to 70 Hz
• Simultaneous availability of the measured values over the RS 232 C serial line interface
• Test of two, three and four-wire meters
• Integrated measurement connection mode switching
• Easy operation due to the use of processor technology
• Operation verification with error indication
• Integrated RS 232C serial line interface for data transmission and programmed operation using an external computer
• Current and voltage ranges:
30 V to 520 V, 1 mA to 200 A

The SRS 400.3 three-phase, electronic reference standard in 0.02 accuracy class for use in meter test systems.

Key features of the SRS 400.3
• Three-phase reference standard
• Precision measurement unit for AC values in the frequency range of 45 to 70 Hz
• Simultaneous availability of the measured values over the RS 232 C serial line interface
• Test of two, three and four-wire meters
• Integrated measurement connection mode switching
• Easy operation due to the use of processor technology
• Operation verification with error indication
• Integrated RS 232C serial line interface for data transmission and programmed operation using an external computer
• Current and voltage ranges:
30 V to 520 V, 1 mA to 120 A

The SRS 400.3 / 200 A three-phase, electronic reference standard in 0.02 accuracy class for use in meter test systems.

Key features of the SRS 400.3
• Three-phase reference standard
• Precision measurement unit for AC values in the frequency range of 45 to 70 Hz
• Simultaneous availability of the measured values over the RS 232 C serial line interface
• Test of two, three and four-wire meters
• Integrated measurement connection mode switching
• Easy operation due to the use of processor technology
• Operation verification with error indication
• Integrated RS 232C serial line interface for data transmission and programmed operation using an external computer
• Current and voltage ranges:
30 V to 520 V, 1 mA to 200 A

The SWS 1.3 three-phase, electronic reference standard in 0.1 accuracy class for use in meter test systems

Key points of the SWS 1.3
• Three-phase working standard
• Precision measurement unit for AC values in the frequency range of 45 to 66 Hz
• Measurement of active, reactive and apparent power in 3 and 4 wire networks
• Impulse output for energy
• Current, voltage and Frequency measurement
• Control of output relays to control the energy dosage of register tests
• Error measurement