Full automated high precision transformers turns ratiometer Can be expanded for Capacitive Voltage Transformers Tests.
全自动高精度变压器匝比计可扩展为容性电压互感器测试。
The great advantage of the PWR3A compared to many of the other instruments on the market is its simple set-up.
In most cases the required parameters must be looked up in tables on the basis of the vector group and the code number of the transformer to be measured, and set up at the instru-ment by means of rotary switches or keys. This often results in a wrong set-up or uncertainty regarding the set-up since some of the tables are confusing.
与市面上的许多其他仪器相比，PWR3A的最大优点是它的设置简单，在大多数情况下，所需的参数必须根据矢量组和要测量的变压器的代码数在表中查找，并通过旋转开关或键在仪器处设置。这通常会导致错误的设置或设置的不确定性，因为其中一些表是混乱的。
| Ratio measurement |
|
| Total Range | 0.75 – 20,000 : 1 |
| Max. errors (0.75 .. 2,500) | ± 0.10 % ± 1d @ 8 V .. 230 V |
| Max. errors (2,501 .. 5,000) | ± 0.10 % ± 1d @ 40 V .. 230 V ± 0.15 % ± 1d @ 8 V |
| Max. errors (5,001 .. 10,000) | ± 0.10 % ± 1d @ 80 V .. 230 V ± 0.20 % ± 1d @ 8 V .. 40 V |
| Max. errors (10,001 .. 15,000) | ± 0.15 % ± 1d @ 80 V .. 230 V ± 0.30 % ± 1d @ 8 V .. 40 V |
| Max. errors (15,001 .. 20,000) | ± 0.30 % ± 2d @ 160 V .. 230 V ± 1.00 % ± 2d @ 40 V .. 80 V |
| Measuring voltage | 8 V, 40 V, 80 V, 160 V , 230 V or by external source (8V .. 240 V) |
| Measuring frequency | 45 Hz – 65 Hz |
| Range selection | full automatic |
| Phase angle measurement | |
| Range (one phase) | – 9.9 ° to + 9.9 ° |
| Range (three phase) | – 179.9 ° to + 180 ° |
| Max. error | ± 0.1 ° ± 2 digit |
| Mag.current measurement | 1 mA – 2000 mA ± 1 mA |
| Multiplexer | |
| Connections HV | 1U, 1V, 1W, 1N / H0,1,2,3 Amphenol |
| Connections LV | 2U, 2V, 2W, 2N / X0,1,2,3 Amphenol |
| Connections ext. excitation | 8 V – 240 V (1/3-phase) AC, STASEI 5 |
| Error detection | Contact- and stability errors displays: HV / LV too low; bad line stability |
| Set point input | using front panel, via RS232 or chipcard |
| Deviances | shown on display, via RS232 |
| Start of measurement | using front panel, via RS232 or IEEE – 488 |
| Result format | vectorgroup, actual phase, actual tap-position, ratio and deviation, phase angle and deviation, exiting current, deviation ref. to setpoints |
| Measuring Time | 5 … 20 s depending on line noise/distortion |
| Measurement Storage | ca. 2000 sets of data on internal memory |
| Data Transfer | direct or later on with PWR3A-XFER – Program |
| Correct Connections | tested before each measurement |
| Ports | USB, RS232C (full device control) printer (parallel, ANSI standard, optional) |
| Temperature | Operating: -10° .. 50°C Storage: -20° … 65°C |
| Humidity | 0 … 90% (Storage 95%) non condensing |
| EMC, Safety, Vibration | CE , IEC61010-1 , ASTM D 999.75 |
| Dimensions, Weight | 490 x 400 x 190 mm (WxDxH, mobile ABS rugged case), approx. 10 kg without cables |
| Power Supply | 230VAC +10% -15% (196 – 250VAC) / 48..62Hz |
