integrated motor and transformer test equipment

I. Features 1, a comprehensive and strong: that is to complete the "motor drive" experiment can complete a single, three-phase transformer test, can be expanded electrical control experiments. 2, the package is strong: from the instruments, dedicated power supply, motor and other experiments to test cable components are complete. 3, motor rail made of stainless steel floor with 20mm thick rolled steel plate, motor noise, never deformation to ensure long-term operation of the equipment. 4, with the "correction DC dynamometer" test prime mover output power, completely overcome the past, "Eddy Current Dynamometer" dead zone big, big error shortcomings. Matching small motors have been specially designed to simulate the characteristics and parameters of small and medium sized motors, students can learn more about the motor through the experimental understanding of the theory. 5, with voltage-and current-leakage protection, and white, line overload or short circuit between the MCU monitor the entire process by the automatic protection function. 6, with timer and alarm recording devices to adapt to the open laboratory teaching, the teacher of the experiment to facilitate the management and assessment. Second, the technical performance 1, input power: Three-phase four-wire 380V ± 10% 50Hz 2, the working environment: temperature -10 °C +40 °C Relative humidity <85% (25 °C) 3, the installed capacity: <1.5KVA 4, Weight: 300Kg 5, Dimension: 1600 × 750 × 1300 (mm) Third, the pilot project: (A) of the DC motor experiment 1, experimental knowledge 2, the DC generator 3, the DC shunt motor 4, DC motor start: string resistance starting, step-down start 5, the DC motor to change the method of turning 6 Experimental DC motor speed control: changes in resistance of the armature circuit of the series, the series resistance of excitation circuit to reduce the armature voltage (B) of the experimental single-phase transformer 1, single-phase transformer ratio K 2, single-phase transformer no-load test, the transformer no-load test data obtained IO, PO and UO. 3, single-phase transformer short-circuit test, the transformer short-circuit test data obtained UK, IK, and RK. 4, single-phase transformer load experiment, the measured transformer load data obtained UZ = f (IZ). (C) three-phase transformer test 1, Determination of three-phase transformer winding polarity 2, the determination of three-phase transformer connection group (D) Experimental induction motor 1, the three-phase induction motor stator winding resistance test 2, three-phase asynchronous motor load test: Test to take no-load voltage U0, current I0, three-phase power P0, draw the load characteristic curve 3, three-phase asynchronous motors short-circuit test: short circuit voltage for Measuring UK, current IK, power PK, short-circuit characteristic curve drawn 4, to strike a three-phase asynchronous motor parameters 5, three-phase asynchronous motor running in a variety of mechanical properties under Fourth, the device's basic equipment (A) Training Panel (iron double guide matt spray pattern density, aluminum panel) 1, AC power: to provide adjustable three-phase 0 450V AC power, and get single-phase 0 250V AC power adjustable (with a three-phase coaxial joint auto voltage regulator, power 1.5KVA). AC power supply with adjustable output of over-current protection device, when the white, over-current or direct line between the alarm and cut off the power supply can short circuit. With a three pointer AC voltmeter, through the switch, may direct the three-phase power voltage and phase voltage regulator output voltage, and a light indicates the work of the external power input and power output. 2, high voltage DC power supply: provides 220V (0.5A) excitation power and 0 250V (2A) continuously adjustable armature voltage power supply. And several were voltmeter instructions. 3, timer and alarm recorder: a set time, timer alarm, cut off the power and record the number of all alarm functions. 4, measuring instruments (1) Three DC digital ammeter: range 2000mA, 0.5 (2) DC digital voltage meter three: range 300V, 0.5 (3) AC Digital Ammeter three: Range 3A, 0.5 (4) AC digital voltmeter three: range 500V, 0.5 (5) Intelligent power, power factor meter two: the 24-bit dedicated DSP, 16-bit high precision and high-speed AD converters designed by MPU unit by keying, digital machine conversation window function control mode. Software RTOS design ideas with the same time with a PC monitoring software to enhance analysis. Circuit can measure power, power factor. Power measurement accuracy of 1.0, range 0.3-1.0 power factor measurement, voltage and current range for the 450V and 5A, can automatically determine the loads nature (emotional display "L", capacitive display "C", pure resistance does not show), and 15 sets of measurement data stored for at any time. 5, three-phase switch two groups, a group of single-phase switch 6, three-phase adjustable resistor (three 90Ω × 2/1.3A) 7, three-phase adjustable resistor (three 900Ω × 2/0.41A) (B) equipment with 1, three single-phase transformers, the primary 220V/0.35A, secondary 55V/1.4A 2, DC, and (he) motors 1 set 3, DC dynamometer calibration 1 set 4, AC induction motor winding machine 1 set 5, stainless steel motor rails: optical encoder speed systems and digital tachometer, stainless steel rails, good flatness, no stress and deformation, fine processing, concentricity and interchangeability, and motor noise. 6, light box load 7, safety wire: The high reliability and plug connection method **** jacket structure, with soft, high pressure, strength, anti-hardening, toughness and good. (C) of the experimental table Tables of the main experiment for the double structure of iron matte spray pattern density, the desktop is fireproof, waterproof, wear-resistant high- density, nice shape.