High Speed Multiple Current Voltage Instrument transformers Calibration System

Features:

1. Full automatic testing bed is based on single chip to measure, control and display

2. With computer interface to achieve office automation, work efficiency much higher than before

3. Large LCD screen, user-friendly operation interface, massive measurement information

4. Auto measure the instrument transformer, auto switch the voltage current loading box

5. Good capture function, timely report to user about the errors

6. Accuracy: 2

7. The standard transformer is not necessary to be have the same turn ratio with the tested transformer, the test can carry out as long as the rated primary voltage or rated primary current of the standard transformer is larger than the rated value of the tested transformers.

Technical indicators:

1. Working condition

1) Temperature: 5℃~40℃

2) Relative humidity: <80%(25℃)

3) Altitude: <2500m

4) Power supply frequency: 50Hz ±0.5Hz

5) Power supply voltage: 220V±5V

2. Measuring range

1) In-phase component (%): 0.0001~200.0 resolution: 0.0001

2) Quadrature component (min): 0.001~999.9 resolution 0.001

3) Impedance: (W): 0.0001~60.0 resolution:0.0001

4) Admittance(ms): 0.0001~60.0 resolution:0.0001

3. Basic error

1) In phase component: DX=±(X×2%+Y×2%±2d)

2) orthogonal component: DY=±(X×2%+Y×2%±5d)

“X”“Y”——instrument display value,“5d”—— instrument quantization error

3) Percentage: 1

4.Working scope:

1) Current (1%-149%)In(In=5A);(5%-149%)In(In=1A)

5. Working load: current: To relative to Tx < 0.12Ω cosΦ=1

6.Polarity error indication: there should be polarity indication when rated working current over 5%, error > 180%, Note: if there is no polarity reminding when rated working current is over 10%, it is software failure, don’t increase current any more in order not to burn the instrument

7. Turn ratio error indication

1) There should be turn ratio error indication when rated working current over 5%, error >30%

8. Insulation and withstand test statement

1) Terminal Tx is linked with grounding terminal

2) Both K and D terminal are not linked with grounding terminal

3) Power supply socket can withstand 1.5KV to the case, time: 1min