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Selection case for AC/DC standard sources, selection方案 for multimeter calibrators
Release time:
2026-02-27
Alternative names: Three-phase AC/DC indicating instrument calibration device, three-phase multifunction energy meter calibration device, on-site energy meter verifier, three-phase AC/DC instrument verification device, transmitter/AC sampling on-site verifier, multimeter calibration device, AC/DC standard source, three-phase programmable precision test power supply, standard test power supply, three-phase standard source.
Overview:
The MC-YJZ1 single-phase AC/DC standard source is suitable for the verification and calibration of various indicating instruments, including ammeters, voltmeters, ohmmeters, and multimeters with accuracy classes of 0.2 or lower. It can also be used as a high-stability test power supply, in conjunction with high-grade reference meters, to calibrate ammeters and voltmeters with accuracy classes of 0.2 or higher.
The MC-YZJ3 three-phase AC/DC standard source features an integrated meter-source design and employs fully digital closed-loop standard-source technology. It incorporates an embedded system, a large-screen TFT color LCD display, CPLD chips, and high-precision A/D and D/A converters, among other advanced components. With its compact size and lightweight construction, it is widely applicable in the electric energy metering industry, electrical laboratories, and other relevant departments, and is conveniently portable for field use.
Technical Specifications
MC-YJZ1 Single-Phase AC/DC Standard Source:
1. Stability: DC < 0.01% of full scale per 2 minutes
AC < 0.03% of full scale per 2 minutes
2. Intermodulation Distortion: <0.5%
3. DC Ripple Factor: <0.1%
4. Output frequency and accuracy: 50 Hz, 60 Hz, 400 Hz, <1%
5. Range and accuracy of output voltage and current (at 23°C ± 2°C, with output values greater than 10% of the measurement range)
6. Power Supply Power Consumption: AC supply voltage 220 V ±10%, frequency 50 Hz ±1 Hz; power consumption < 180 VA
7. Operating Environment: The operating environment shall have a temperature range of 5°C to 35°C and a relative humidity no greater than 80%.
8. Working Hours: Continuous
9. External dimensions: 135 × 480 × 420 mm³
10. Weight: approximately 16 kg 
MC-YZJ3 Three-Phase AC/DC Standard Source Tester:
Technical Indicators
1. Power Output
a. Voltage: 10–456 V (internal voltage settings: 57.7 V, 100 V, 220 V, 380 V); maximum output power: 20 VA.
b. Current: 0.001–12 A (24 A) (internal current ranges: 1, 2.5, 5, and 10 A (20 A)); maximum output power: 20 VA.
c. Output frequency: 45–65 Hz.
d. Output phase: 0–359.99°.
e. Stability: For classes 0.1 and below, the stability of voltage, current, and power shall not exceed 0.02%; for class 0.05, the stability of voltage, current, and power shall not exceed 0.01%.
f. Distortion: At the internal rated output level, the voltage and current distortion shall not exceed 0.5% (non-capacitive load).
g. Harmonics: 2nd to 31st orders, with the total harmonic content not exceeding 40% of the fundamental wave; multiple harmonics may be superimposed.
2. Output and display accuracy:
| Output accuracy | Level 0.1 | Class 0.05 |
| Voltage | 0.1% | 0.05% |
| Electric current | 0.1% | 0.05% |
| Frequency | 0.02Hz | 0.005Hz |
| Phase | 0.05° | 0.02° |
| Power factor | 0.1% | 0.05% |
| Active power | 0.1% | 0.05% |
| Reactive power | 0.2% | 0.1% |
| Apparent power | 0.1% | 0.05% |
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