GDDS-2C.NET Network Intelligent Electrical Laborat

Experiment items 1. Experiments for electro technology and circuit 1.The use of analog measuring instruments. Analyze and calculation of measurement errors. 2.Correction methods for the systematic errors of DC instruments 3.The basic characteristics and the usage of the commonly used electro technical instruments and the calculation of its measurement errors 4.Comparison and analysis of the measurement errors of the commonly used electro technical instruments, digital multimeter and analogue instruments. 5.Experiments and design of the extended circuit for the voltage range of the instruments. 6.Experiments and design of the extended circuit for the current range of the instruments 7.Test for the Volt-ampere Characteristic( linear and non linear) 8.Test for circuit and potential diagrams 9.Kirchhoff’s law on circuit 10.Test for principle of superposition 11.Test for the venin theorem 12.Equivalent conversion between voltage sources and current sources 13.Test and principle for network equivalent alternation 14.Test for maximum power transfer condition 15.Measurement of the controlled source and its characteristics 16. Characteristics comparison of the inductance elements, capacitor elements and resistor elements in DC circuit. 17.Characteristics comparison of the inductance elements , capacitor elements and resistor elements in AC circuit 18.Observation of the sine signal and its parameter measurement 19.Experiment on the phasor relations in sine steady circuit 20.Test one of the equivalent parameters in AC circuit 21.Test two of the equivalent parameters in AC circuit 22.Series resonant circuit and parallel resonant circuit 23.Test for two-port networks( isolated networks and grade chain networks) 24.Experiment of coefficient of mutual inductance 25.RC first order circuit transient state and response state 26.The transient state and response state of the over damping, critical dumping and under damping in RLC second order circuit 27.Zero damping and under damping in RLC second order circuit 28.Characteristic test of the operational amplifier 29.Experiment on the add subtract and integral operation by operational amplifier 30.Characteristic test of the negative resistance converter 31.Experiment on negative resistance oscillator 32.Characteristic test of gyrator 33.Parallel resonance test of gyrator 34.Experiment on the curve of the improvement of power factor of fluorescent lamp 35.Characteristic test of single phase transformer 36.Voltage and current measurement in three phase circuits and observation of the effect of the mid line 37.Measuring methods of the reactive power and active power in three phase circuit 38.Experiment on the phase sequence indicator 39.Experiment on the non- sine periodic circuit and analysis of harmonics 40.Characteristic test of passive filter 41.Characteristic test of active filter 42.Observation of state locus 43.All kinds of designing and comprehensive experiments 44.The starting and use of three phase squirrel cage induction motor 45.The direct start of three phase squirrel cage induction motor controlled by contractor and relay and its reversible movement 46.The Y—Δ delayed start control circuit of three phase squirrel cage induction motor 47.Braking controls of three phase squirrel cage induction motor 2. Advanced and designing experiments (Exemplary experiments for electro technology and circuit) Besides the convention experiments meeting the short term teaching requirements, the GDDS high performance electrics and electronics experiment device can also satisfy the demand for advanced and designing experiments for medium term teaching requirement without adding any instruments to fully realize the open type optimized experimental teaching mode. Here we listed some experiment items which have higher requirements on the testing technique, precision, methods, depth and extent of knowledge and the operating ability than the conventional experiments have. A certain amount of conventional experiments and basic training are needed for students before doing these experiments. (1)Designing of phase sequence indictor (2)Analysis of the non- sine periodic circuit and harmonics (3)Designing and testing of the circuit in step voltage generator (4)Test and principle of single phase and three phase leakage protection circuit (5)Design of phase shifting bridge circuits and phase test (6)Connecting methods of three phase transformer and the obtain of specific phase (7)Characteristics of gyrator and design of parallel resonance circuit (8)Design and characteristic test of passive filter (9)Design and characteristic test of active filter (10)Measuring methods of the reactive power and active power in single phase and three phase circuits