DC Meter Calibration System
DC Meter Calibration System
The DC Meter Calibration System is designed to test single-phase DC electricity meters with open and closed I-P links. It is fully electronic, using only solid state electronic components and is controlled by a PC via the integrated ethernet interfaces.
DC Meter Calibration System Technical Data
The SRS 121.1 DC is a 6-channel single-phase reference standard for DC Power/Energy accuracy class 0.04 for verification of 1 up to 6 DC Meters or DC Energy Measuring Units of EVSE (Electric Vehicle Supply Equipment) at the same time. The voltage is measured with 6 independent channels U1 to U6. The current is measured common for all channels with two external Zero Flux Precision Current Transducers connected to the two Current Transducer inputs CT1 and CT2. The DC Power/Energy measurement with 6 channels (voltage Ux multiplied with current I) allows to calibrate up to 6 DUTs with closed test link (voltage and current path connected) at the same time. The DC Meter Calibration System is designed to test single-phase DC electricity meters with open and closed I-P links. It is fully electronic, using only solid state electronic components and is controlled by a PC via the integrated ethernet interfaces. The system is equipped with following components:
Included Components
- DC Power source with one DC voltage amplifer and two DC current amplifiers
- DC reference standard SRS 121.1 DC
- Control unit STE 10
DC Power Source Fully static single-phase DC sources for the generation of voltage and current for the meters under test. The power sources run completely distinct/independent from that of the mains power supply. DC Reference Standard The SRS 121.1 DC is a 6-channel single-phase reference standard for DC power / energy class 0.04 for verification of 1 up to 6 DC Meters or DC Energy Measuring Units of EVSEs (Electric Vehicle Supply Equipment) at the same time.
| DC Voltage Source | Fully static single-phase DC sources for the generation of voltage and current for the meters under test. The power sources run completely distinct/independent from that of the mains power supply. | |
| DC Voltage Amplifier | Voltage range | 0… 1200 VDC / 2400 W |
| Accuracy | ≤ ±0.2 % | |
| Stability | ≤ ±0.05 % | |
| DC Current Amplifiers | Current range | 0… 80 ADC / 0… 600 ADC |
| Accuracy | ≤ ±0.2 % | |
| Stability | ≤ ±0.05 % | |
| SRS 121.1 DC | Voltage range | 0.5… 1000 VDC (1500 VDC on demand) |
| Current range | 0.1… 600 ADC | |
| Accuracy | ≤ ±0.04 % |
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