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Product Name:DDSZ-E1 Electric Machines & Electrical Technology Lab System
Product Series:Electric Machine& Drive Series
Product Introduction

Technical Description
    The DDSZ-E1 is designed for the experiments for the courses of "Electrical Machines & Drives", "Relay Control", "PLC Control Technology" and "Factory Electrical Control", which address the requirements of colleges and vocational schools. It is also a useful platform for teachers and post graduates to explore new experiments.
    This equipment consists of a power control panel, a desk with metal framework, and optional lab-exercise units designed to perform different experiments in accordance with the curriculum and teaching programs. The modular concept benefits updating and expanding of experiments. Safety is paramount during the development of this equipment and every effort has been made to protect both the user and instruments.
Specification
    Power supply: 3-phase 4-wire AC380V±10% 50Hz
    Environment temperature: -10℃~+40℃
    Power capacity: <1.5kVA
    Weight: 480kg
    Dimensions: 187×73×160 cm
Lab exercises
   
(1) DC machines
      Basic exercise
      DC generators
      DC shunt motors
      DC series motors
      Rotational inertia measurement of DC shunt motors
    (2) Transformers
      Single-phase transformers
      3-phase transformers
      Connections and asymmetric short circuit of 3-phase transformers
      3-phase 3-winding transformers
      Single-phase transformers in parallel
      3-phase transformers in parallel
    (3) Asynchronous motors
      Operating characteristics of 3-phase squirrel-cage asynchronous motors
      Start & speed drive of 3-phase asynchronous motors
      Capacitor-start single-phase asynchronous motors
      Capacitor-run single-phase asynchronous motors
      Resistance-start single-phase asynchronous motors
      Double-speed 3-phase asynchronous motors
      3-phase squirrel-cage asynchronous generators
      Unsymmetrical operation of 3-phase squirrel-cage asynchronous motors
      Temperature rising of 3-phase squirrel-cage asynchronous motors
      Rotational inertia measurement of 3-phase squirrel-cage asynchronous motors
    (4) Synchronous machines
      Operating characteristics of 3-phase synchronous generators
      Operation of 3-phase synchronous generators on an infinite bus
      3-phase synchronous motors
      Parameters determination of 3-phase synchronous generators
      Sudden short circuit of 3-phase synchronous generators
      Unsymmetrical operation of 3-phase synchronous machines
    (5) Mechanical characteristics test of motors
      Mechanical Characteristics of DC Separately Excited Motors
      Mechanical Characteristics of 3-phase Asynchronous Motors
      M-S Curve Measurement of 3-phase Asynchronous Motors
    (6) Servo motors
      Permanent magnet DC tachogenerators
      AC tachogenerators
      Rotary encoders
      Torque synchros
      Control synchros 
      Sine/Cosine resolvers
      Step motors
      AC servo motors
      DC servo motors
      3-phase permanent magnetic synchronous motors
      Linear motors
      High-voltage DC brushless motors
      Switched reluctance motors
    (7) Relay Contact Control and electrical control
      Jog and self-locking control of 3-phase asynchronous motors
      Forward and reverse rotation control of 3-phase asynchronous motors
      Sequential control
      Reduced-voltage start of 3-phase squirrel-cage asynchronous motors
      Starting control of 3-phase wound-rotor asynchronous motors
      DC brake control of 3-phase asynchronous motors
      Unidirectional start and plugging control of 3-phase asynchronous motors
      Control at two locations
      Automatic circulation motion control of worktable
      Electrical control of C620 lathe
      Electrical control of electric hoist
      Bidirectional start and plugging control of 3-phase asynchronous motors
      Control of double-speed 3-phase asynchronous motors
      Electrical control of M7130 grinder
      Commissioning of the X62W miller control circuit
      Starting of DC motors
      Speed control of DC motors
      Forward and reverse rotation of DC motors
      Forward and reverse rotation of DC motors with dynamic brake
    (8) PLC exercises
      Basic instructions programming
      Vending machine control
      3-floor elevator control
      4-floor elevator control
      Liquid mixer control
      Motor control (jogging, self-locking, forward/reverse rotating, Y/〉 start)
      4-segment conveyor belt
      Auto feed system simulation
      Robot arm
      LED display
      Step motor control
      Traffic lights control
      Assembly line control
      Water level control of tower
      Rolling mill control
      Post sorting system
      Neon lamp control
      Load vehicle control
      Fountain control
      Machining center control
Equipment list
   
(1) DD01 power control panel
      1) AC power supply
      3-phase 380V, single-phase 220V, 3-phase variable 0~450V, and single-phase variable 0~250V;
      With protections against overcurrent, short circuit and leakage.
      2) DC power supply
      220V @0.5A for excitation, 40~250V @3A for armature.
      3) Timer & alarm recorder
      Function of lab service supervision including lab time set, alarming at expire time, password setting, faults inquiry, clock display, request etc.
      4) AC voltmeter
      Indicating power mains input and regulable voltage output;
      Measuring range: 0~450V; accuracy: 2.5%.
      5) DC voltmeter
      Indicating excitation and armature voltage.
      6) Components
      Three illuminated fuse holders @10A; one fuse holder @1.5A; two reset buttons; multi indicating LEDs; one fluorescent lamp (220V, 40W) and corresponding switch.
      Several 3-pole blue sockets for providing 220V voltage; several 4p XLR sockets for providing 33V voltage and overrange alarm signal; one 380V 4p socket; one 220V 3p socket; one 220V double-breasted flush socket; and two stainless steel tubes for mounting experimental units.
      7) Safety system
      Available protection devices: a 3-phase isolation transformer, two voltage type leakage protectors, a current type leakage protector, fully shrouded sockets and safety test leads.
    (2) DD02 experimental desk
      The desk is used for holding power control panel and lab-exercise units, it is moveable with steel framework. The design of cabinet and drawers facilitates storing wires, and facilities, etc.
    (3) Optional lab-exercise units
      1) DD03-3 kit
      The DD03-3 unit provides a stainless steel guide rail, a rotary encoder, and a rotation speed meter. All components are easy coupled on a slide-rail base.
      2) DD03-4 kit
      The DD03-4 kit consists of a rotary encoder and an eddy current dynamometer. All components are easy coupled on a slide-rail base.
      3) DD05 torque kit
      It comes with a torque frame, a torque disc, and a spring scale.
      4) DJ11 shell-type transformer
      5) DJ12 3-phase core-type transformer
      6) DJ13 DC compound generator
      7) DJ14 DC series motor
      8) DJ15 DC shunt motor
      9) DJ16 3-phase squirrel-cage asynchronous motor
      10) DJ17 3-phase wound-rotor asynchronous motor
      11) DJ17-1 resistors for wound-rotor asynchronous motor
      12) DJ18 3-phase synchronous machine
      13) DJ19 capacitor-start 1-phase asynchronous motor
      14) DJ20 capacitor-run 1-phase asynchronous motor
      15) DJ21 resistance-start 1-phase asynchronous motor
      16) DJ22 double-speed 3-phase asynchronous motor
      17) DJ23 purpose-designed DC dynamometer
      18) DJ23-1 DC motor
      19) WDJ24 3-phase squirrel-cage asynchronous motor (〉 220V)
      20) DJ25 DC separately excited motor
      21) WDJ26 3-phase squirrel-cage asynchronous motor (〉 380V)
      22) HK10 DC Permanent magnet tachogenerator
      23) HK27 AC tachogenerator
      24) D31 DC digital V/mA/A meter
      This unit consists of a DC digital voltmeter (0~1000V), a DC milliammeter (0~2000mA), and a DC ammeter (0~5A). All meters feature  -digit display, and their measuring accuracy are 0.5%, with functions of alarm, indicating and cutting off power if over range.
      25) D31-2 intelligent DC V/mA/A Meter
      This unit consists of an intelligent DC voltmeter (0~300V), an intelligent DC milliammeter (0~1000mA), and one intelligent DC ammeter (0~5A). All of them feature  -digit display, with functions of alarm, indicating, cutting off power if over range, communication with PC, and storing up to fifteen groups of data.
      26) D31-3 intelligent DC V/mA/A Meter
      It is the same as D31-2.
      27) D32 AC digital/analog A meter
      It includes one true RMS A meter (0~5A) and two AC A meters (0~5A), with functions of alarming, indicating, and cutting off power supply if overrange.
      28) D33 AC digital/analog A meter
      It comprises one true RMS V meter (0~500V) and two analog AC V meters (0~500V), with functions of alarming, indicating and cutting off power if overrange.
      29) D34-3 intelligent P/COSφ meter
      It consists of two power/power factor meters and one power meter, featuring microcomputer, high speed and high accuracy A/D conversion chip and digital displayed circuit. The power measuring accuracy is 0.5%, input voltage ranges from 3 to 450V, and current ranges form 5mA to 5A, with functions of storage and recording 15-group measuring results.
      30) D34-2 intelligent P/COSφ meter
      The D34-2 is the same as the D34-3 unit except a communication function.
      31) D35 intelligent true RMS A meter
      It includes three intelligent true RMS ammeters with function of data recording.
      32) D35-1 intelligent true RMS A meter
      The same as D35 unit except a communication function.
      33) D36 intelligent true RMS V meter
      It includes three intelligent true RMS voltmeters with function of data recording.
      34) D36-1 intelligent true RMS V meter
      The same as D36 unit except a communication function.
      35) D37 analog/intelligent digital true RMS A meter
      36) D37-1 analog/intelligent digital true RMS A meter
      The same as D37 unit except a communication function.
      37) D38 analog/intelligent digital true RMS V meter
      38) D38-1 analog/intelligent digital true RMS V meter
      The same as D38 unit except a communication function.
      39) D41 adjustable resistor
      The D41 unit consists of three coaxial resistors (90Ω×2/1.3A, 150W), 1.5A fuse protection for each. The resistors can be used as motor load or starting resistance and such.
      40) D42 adjustable resistor
      The D42 unit includes three coaxial resistors (900Ω×2/0.41A, 150W), 0.5A fuse protection for each. The resistors can be used as motor load or field resistance and such.
      41) D43 adjustable reactor
      The D43 unit is equipped with one fixed reactor (127V@0.5A) and one autotransformer (0~250V).
      42) D44 circuit components
      It contains two coaxial resistors (90Ω×2/1.3A/150W and 900Ω×2/0.41A/150W) with fuse protection for each, capacitors (1μF/500V, 2μF/500V, 35μF/450V, 4μF/450V), two double-pole double-throw switches, and two power resistor (10kΩ/8W, 20kΩ/8W).
      43) D46 capacitor
      It consists of three adjustable power capacitors (0~2.7μF). All the terminals are brought out to the faceplate.
      44) D47 frequency meter/counter
      It is provided with a frequency meter and counter.
      45) D51 waves test & switch
      The D51 unit comprises waveform tester, two 3-pole 3-throw switch, and one 2-pole 3-throw switch.
      46) D52 synchronizing lamp/switch/excitation power supply
      The D52 unit provides three groups of lamps (yellow/green/red), one switch and an excitation power supply.
      47) D53 synchroscope
      It consists of one synchroscope and one three-pole three-throw switch.
      48) D54 step motor control
      The D54 unit is capable of setting various running status for 3-phase/4-phase/5-phase step motors, presetting number of steps for step and continuous operation, and performing various drive modes of 3-phase step motor and reversing operation.
      49) D55-3 intelligent torque/rotation speed/power test
      The D55-3 unit is capable of measuring the torque, rotation speed and power for various DC/AC motors, features MCU technology and digital displayed circuit in human-machine mode, with functions of storage and recording 15-group measuring results.
      50) D55-4 eddy current dynamometer control
      51) D56 resolver & 400Hz power supply
      It offers a resolver and a 400Hz power supply.
      52) ZSZ-1 selsyns experimental equipment
      53) D57 transformer & capacitor
      It contains one single-phase autotransformer (0~250V), one transformer (220V/127V), and one adjustable capacitor (0~6.5μF).
      54) D91 3-phase permanent magnet synchronous motor control
      It comes with a Mitsubishi frequency converter (FR-S540E-0.75k-CHR), and a 3-phase permanent magnet synchronous motor (Y 380V, 180W, 1500rpm).
      55) D92 linear motor control
      56) D93 high-voltage DC brushless motor control
      57) D94 switched reluctance motor control
      58) D60 electrical control device
      The D60 unit provides devices for DC motor control.
      59) D61 relay contact control (1)
      The D61 unit provides three AC contactors, one thermal relay, one time relay, three push buttons, one transformer, one bridge rectifier, and a brake resistance, with all ends being terminated to the faceplate and clearly symbol marked. It is capable of performing the lab exercises of motors including jogging start, Y-〉 start, interlock, and self lock control.
      60) D62 relay contact control (2)
      This unit consists of two intermediate relays, one thermal relay, four limit switches, one pushbutton, two 3-pole 3-throw switches, one 2-pole 2-throw switch, three fuses, and one pilot lamp, with all ends being terminated to the faceplate and clearly symbol marked.
      61) D63 relay Contact Control (3)
The D63 unit includes two intermediate relays, one time relay, two pushbuttons, with all ends being terminated to the faceplate.
      62) D64 relay Contact Control (4)
      It is the same as D61 in addition to two limit switches and one time relay (the operating voltages of contact and relay are 380V).
      63) D65 PLC & its simulation (1)
      The D65 unit is equipped with a Mitsubishi FX1S-20MR PLC, a Mitsubishi FX-20P-E programmable controller, DC 24V power supply, three PLC applications (basic instructions exercises, 3-floor elevator, and vending machine), and overvoltage protection is available. All the input and output terminals of PLC have been brought out to the faceplate, facilitating connections.
      64) D65S PLC & its simulation (2)
      The same as D65 unit except Siemens CPU224 PLC is adopted.
      65) D66 PLC application (1)
      Application modules: 4-segment conveyor belt, Y/〉 start control, liquid mixer, and robot arm, with all ends being terminated to the faceplate.
      66) D67 PLC application (2)
      Application modules: step motor, water level of tower, LED display, assembly line, and traffic lights, with all ends being terminated to the faceplate.
      67) D68 PLC & its application (3)
      The D68 unit contains a Mitsubishi FX1N-40MR PLC, a Mitsubishi FX-20P-E programmable controller, DC 24V power supply, three PLC applications (basic instructions exercises, 4-floor elevator, and vending machine), and overvoltage protection is available. All the input and output terminals of PLC have been brought out to the faceplate, facilitating connections. Its features and protection system are the same as D65 unit.
      68) D68S PLC & its application (4)
      It is the same as D68 unit except a Siemens CPU224 PLC is adopted.
      69) D69 PLC application (3)
      Application modules: fountain, Neon lamp, Post sorting, Machining center, Load vehicle, and Rolling mill. All the wiring terminals have been brought out to the faceplate.
      70) DD06 lead set (fully shrouded safety test leads)

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