| Name of product | Three Phase Standard Power Source |
| Model | YCSS-103 |
| Accuracy class | Class 0.02 |
| Main feature | Constructed by three sets of single phase multifunction standard AC power source, to output three phase voltage and three phase current signal. Suitable for calibrating Voltmeter, Ampere meter, Wattmeter, Energy meter. Etc. |
| Voltage range (4 physical range) | 0~480(V) |
| Voltage output accuracy | Class 0.02(50 ~ 400 V) |
| Resolution of output voltage | 1(mV) |
| Minimum voltage adjustment value | 1(mV) |
| Voltage output short term deviation | ≤30(PPM) |
| Voltage output power | 3*100 VA |
| Voltage wave form distortion | ＜0.2% |
| Stability of output voltage | Better than 50ppm/h (integration time 3 min) |
| Digit display on voltage | 6 digit |
| Current range(>10 physical ranges) | 0~120(A) |
| Current output accuracy | Class 0.02(0.1 ~ 100 A) |
| Resolution of output current | 0.2(mA) |
| Minimum voltage adjustment value | 0.2(mA) |
| Current output short term deviation | ≤30(PPM) |
| Current output power | 3*150 VA |
| Current wave form distortion | ＜0.2% |
| Stability of output current | Better than 50 ppm/h (integration time 3 min) |
| Digit display on current | 6 digit |
| Phase position range | 0~360° |
| Accuracy of phase position | 0.005° |
| Resolution of phase position | 0.001° |
| Minimum phase position adjustment value | 0.001° |
| Digit display on phase position | 6 Digit |
| Frequency range | 45~65(Hz) |
| Output frequency accuracy(power frequency) | ≤0.01% |
| Resolution of output frequency | 0.0001(Hz) |
| Minimum voltage adjustment value | 0.0001(Hz) |
| Digit display on frequency | 6 Digit |
| Output power | ≤0.01% |
| Basic error short term deviation | ≤±50(PPM) |
| Current deviation in one year | ≤±20(PPM) |
| Harmonic output | 2-21 Times harmonic, even harmonic, odd harmonic, subharmonic. |
| Harmonic magnitude accuracy | Best at Class 0.1(2-21 times standard harmonic) |
| Harmonic phase position range | 0~360° |
| Accuracy of harmonic phase position | 0.1° |
| Digit of energy power display | 7 Digit(not including the symbol) |
| Constant of pulse input by tested meter | Dual channel pulse input. Input frequency ≤1×105 imp/s |
| Communication port of tested meter | Dual port , RS-485 |
| The accuracy of Crystal | ≤±0.05(PPM) |
| The frequency of Crystal | FH = 1.5625×106 imp /s |
| Output energy pulse constant | ＞20A FH=107； ＞2A FH=108； ＞0.2A FH=109； ＞0.02A FH=1010； ＞0.002A FH=1011； ＜0.002A FH=1012； |
| Communication port | RS-232,RJ-45(LAN) |
