FPA AC CURRENT TRANSDUCERS
Quick Overview
交流电流、电压变送器是一种能将被测交流电流、电压转换成按线性比例输出的直流电流或电压的仪器。配以相应的指示仪表或装置,可在电力系统交流电路中实现对电流、电压的测量和控制。 FPAR、FPVR与FPA、FPV、FPAX、FPVX的区别是真有效值变换,不随波形畸变而影响测量精度,因此特别适用于波形畸变严重的地区。
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1.Introduction:
The AC current feeder is an instrument that converts the measured AC current into a DC current or voltage that is output in a linear ratio. With the corresponding indicator instrument or device, the measurement and control of current and voltage can be realized in the AC circuit of the power system.
The difference between FPAR and FPA is the true rms transformation, which does not affect the measurement accuracy with waveform distortion, so it is especially suitable for areas with severe waveform distortion.
Models and specifications:
FPA: 1 unit of avg. to rms conversion
FPAX: 3 unit of avg. to rms conversion
FPAR: Ture rms conversion
FPAT:Dual output(avg. to rms conversion)
2.Specification
Accuracy ( 23±3℃) : |
| 0.2% RO:FPA, FPAX;0.4% RO:FPAR | |
Maximum output load: |
| DC current mode : maximum 10V drop DC voltage mode : maximum 5mA drive | |
Dielectric strength |
| AC 2KV 1 minute between terminals AC 2.6KV 1 minute / terminals to case | |
Surge and impulse test |
| ANSI C37.90 / 1989,IEC 255-3 (1989) 4 KV 1.2 x 50 us | |
Maximum input over |
| 1A/5A | 10A |
| 4xrated/continuous | 2xrated/continuous | |
| 10xrated/10 seconds | 25xrated/1 second | |
| 50xrated/1 second | 50xrated/0.5 second | |
| 80xrated/0.5 second |
| |
Input burden |
| Current less 0.2 VA; | |
Response time & ripple |
| ≤400 ms for step change 0-99% ripple less 0.5% ro peak to peak | |
Frequency |
| 45 ~ 400 Hz | |
Stability |
| Temperature range ( 20 to 26°C ) long term stability / year Maximum 60 ppm / °C less 0.2% draft / year typically. | |
Storage condition |
| Temperature range -25 to 70℃, RH 20 to 95% non condensed | |
Operating condition |
| Temperature range -20 to 65°C, RH 0 to 99% non condensed | |
Magnetic field effect |
| < 0.01% under 100 ampere turns at 1M center | |
Power dissipation |
| Maximum 3.5 VA for FPA / FPAR; 8 VA for FPAX |
3.Dimensional Drawings
1.Order form:
Input & Output parameters
An: Current input | An: | A1: 1A 0-1.2A | A2: 5A 0-6A | A3: 10A 0-12A | Ay: Specified |
Fn: Input frequency | Fn: rating range | F1: 50Hz 45-55Hz | F2: 60Hz 55-65Hz | F3: 400Hz | Fy: Specified |
Pn: Auxiliary power | Pn Rating | P1: AC110 V 120 V ± 15% | P2: AC220 V 240 V ± 15% | Ps: Internal Power | Py: Specified |
PDn ratingrange | PD1: DC110 V 120 V ± 15% | PD2: DC220 V 240 V ± 15% | PD3: DC24 V 24 V ± 20% | PDy: Specified | |
On:Output | O1: 0-1mA | O2: 0-20mA | O3: 4-20mA | O4: 0-5mA | O5: 0-10mA |
O7: 0-1V | O8: 0-5V | O9: 0-10V | O10: 2-10V | O11: 1-5V |
Note:
1. FPA/FPV can be dual output;
2. "*" auxiliary power supply optional PD1: DC 110V, PD2: DC 220V.
When signing the order contract, the required model and specifications should be specified in detail. The selected model and specifications should be filled in with the code in the following format.
Example 1. FPA-A2-F1-P2-O3
Current transducer
Input: 0-5A
Frequency: 50Hz
Auxiliary power supply: AC 220V
Output: 0-5V/0-1mA