PCS-ME 1.0

Expanded uncertainty of AC active/reactive power measurements:

• ±0.004 % (PF = 1)
• ±0.006% (PF = 0.5)

Field of application:

• Direct dissemination of active (W) and reactive (Var) measurement units from the State Primary Standard of AC power to measuring instruments of reference and service class
• Accuracy testing and top-level calibration of measuring instruments mentioned above
• Generating test waveforms

PCS can be certified as a secondary standard of AC power.

Components:

• Phantom Power Source based on Energoforma 3.1 programmable generator (synthesizer) of AC voltage and current waveforms
• Input scaling converters of current and voltage (current shunts and voltage divider)
• Two Analogue-to-Digital Converters based on two multimeters Agilent 3458A (ADCs synchronously take instantaneous values of current and voltage)
• Precision source of sampling frequency based on Agilent 33521B (synchronizes signals of ADCs and devices under test)
• PC-based control, data processing and display system operating under EnergoEtalon™software

GPS/GLONASS based Clock Module (required to create a uniform time base) provides 1s interval synchronization and generates UTC-synchronized pulses at 1Hz frequency (1 PPS).

CVFC (Current/Voltage-to-Frequency Converter) may be used to test the devices with pulse output by the method of comparing two frequencies.