The RATIOMETER PWR1-3B is constructed to measure the transformation ratio, phase error and magnetizing current of power- and distribution- transformers for all three-phases simultaneously. Voltage and current transformers are single phase, power transformers normally three-phase. Due to the bad quality on industrial lines (phase jitter and shifting, voltage differences between the three phases) all measurements normally are done single phase, even on three phase ratiometers.
研制了PWR1-3B型电流互感器，同时测量了三相电源和配电变压器的转换比、相位差和磁化电流。电压和电流互感器是单相的，电力变压器通常是三相的.由于工业线路质量差(相位抖动和位移，三相电压差)，所有测量都是单相的，即使是三相比计也是如此。
| Ratio range Accuracy ResolutionPhase angle Test voltage… … and current Test frequency Input protection Error and … …warning messagesDisplay Interface Printer Power supply Dimensions |
1: 0.8 to 1: 2,500 (..to 1:4,000 Option AC) 0.2% of reading +/- 3d (0.08% of rdg. +/- 2d Opt.AC) 0.9 to 9.999:1 >> 0.001 / 10.1 to 99.99:1 >> 0.01 100:1 to 999.9:1 >> 0.1 / 1,000:1 to 4,000:1 >> 1 +/- 180.0° +/- 0.2° 10/100 VAC ( Other voltages on request ) 120 mA max. @ 100 V 50 Hz / 60 Hz (other frequencies as option ) Surge absorbers and fuses Continuity error (HV and LV) / Shorted windings Tap misconnections / Current error External voltage / HV-LV Reversal / Battery low Large LCD with back light, 7 lines of information USB 20 Character printout, 7 lines of information (Option) Mains 48…62 Hz, 90…260 VAC 25 VA ; Rechargeable battery for 6h operating ABS rugged case, W410 x D330 x H180mm. approx. 8.5 kg net 0…60°C not condensing |
