SRS 121.3

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