Introduction of system composing and technical parameters
1 To satisfy three-phase, one-phase measurement, transformer no-load and load should come to the following requirements:
Voltage measuring range: 0～650V, current measuring range: 10mA～2A,
Accuracy: 0.2 class; power: U*I, Accuracy: 0.2 class;
Power factor: 0.050～1.000,accuracy: 0.2 class;
Frequency: 40—70Hz, accuracy: 0.1 class; three-phase total power P;
No-load current I.%,No-load loss P.；
Load loss PK,impedance voltage UK；
Three frequency Pa(Pab),Pb,Pc(Pbc)；
Average three-phase line voltage Un;
Average three-phase current In. (including 19 harmonic wave analysis)
2. High-voltage precision current transformer should meet
the following requirements:
Rated operation voltage: 3kV
Withstand voltage:4kV
Capacity: 1VA
Measuring range: 0.1A～200A；
Accuracy: 0.05 class
The ratios are 200A,100A,50A,25A,10A,5A,2.5A/1A, total 7 steps.
3. High precision Voltage transformer should meet the
following requirements:
Rated operation voltage: 3kV
Withstand voltage: 4kV
Capacity: 1VA
Measuring range: 0.01kV～3kV；
Accuracy: 0.05 class;
The ratios are 3kV,2kV,1kV,0.5kV/0.1kV, total 4 steps. 7
4. 250kVA three-phase voltage regulator should meet the
following requirements:
Capacity；250kVA
Input voltage:380V
Output voltage:20-650V
Max load current: 222A
When the input voltage is steady,the voltage regulator can stepless and smoothly adjust the output voltage.
Technical Parameters:
