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EM-3000  
Electrical Machines System

 

    The electrical machines system leads students to distinguish the mechanical similarities and differences among all electrical machinery. Students study and turn all kind of electrical machinery into circuit models for the foundation. Moreover, it enhances students ability for further application and control. Besides facilitating teaching, it makes students be familiar with a different kind of electrical mechanical test.
 
 
 
1. Single-Phase Transformer
    (1) Polarity test
    (2) Turns ratio test
    (3) Open circuit test
    (4) Short circuit test
    (5) Load characteristic tests
         Resistive load
         Inductive load
         Capacitive load
 
2. Three-Phase Transformer
    Three-phase connections
          Y -Y  connection
          Y -  connection
          Y -Z  connection
          -Y  connection
          -  connection
          - Z  connection
 
3. DC Machines
    (1) DC permanent-magnet motor
         Connection and motor direction  control
         Torque-speed characteristic
    (2) DC shunt wound motor
         Connection and motor direction control
         Torque-speed characteristic
         Speed control
    (3) DC separately excited generator
         No load saturation characteristic
         Load characteristic
    (4) DC shunt wound generator
         No load characteristic
         Load characteristic
    (5) DC series wound motor
         Connection and motor direction control
         Torque-speed characteristic
         Speed control
    (6) DC series wound generator
          Load characteristic
    (7) DC compound wound motor
         Connection and direction control of DC cumulative-compound wound motor
         Torque-speed characteristic of DC cumulative-compound wound motor
         Speed control of DC cumulative-compound wound motor
         Connection and direction control of DC differential-compound wound motor
         Torque-speed characteristic of DC differential-compound wound motor
         Speed control of DC differential-compound wound motor
    (8) DC compound wound generator
          Load characteristic of DC cumulative-compound wound generator
          Load characteristic of DC differential-compound wound generator
 
4. Induction Machines
    (1) Single-phase induction motor
         Torque-speed characteristic with split-phase winding starting
         Torque-speed characteristic with capacitor starting and running
    (2) Three-phase squirrel cage induction motor
         Connection and motor direction control
         Y- starting
         PF correction
         No-load characteristic
         Blocked-rotor test
         Torque-speed characteristic
    (3) Three-phase rotor winding induction motor
         Connection and motor direction control
         Blocked rotor test
         Torque-speed characteristic
    (4) Three-phase salient pole synchronous motor
         Connection and motor direction control
         Excitation characteristic
         Load characteristic
    (5) Three-phase salient pole synchronous generator
          Armature resistance measurement
          No load saturation and short circuit characteristic
          Load characteristic
          Excitation characteristic
 
Remark : System Transformer is provided at extra charge for the                         area where 3-phase 220 V power is not available.

 

  1. Modular design provides flexible experimental requirement
  2. Each Module panel height compatible with DIN A4 standard
  3. Using 4 mm safety sockets and plugs
  4. Each DC/AC power supply equipped with overload protection 
  5. Rotary machine and brake with overheating protection
  6. Adopting digitized and microprocessor-based measuring instrument to provide high-accuracy measurement
  7. Brake with constant speed / constant torque function, easy to operate
  8. Drawing complete T/N curve
  9. Connecting to PC, measuring and drawing characteristic curve available
10. 300W-grade designed equipment suitable for learning the theory and characteristics of electrical machines
11. Stand-alone machine design equipped with two shaft ends and aluminum alloy base for coupling to other machines
12. Training panel uses 5 mm isolation bakelite, printed component symbol, value and function, easy to connect
13. Fully protected system safe to connect various kind of machines
14. Providing powerful computer measuring software for saving graphic file, drawing and printing characteristic curves
15. For the sake of safety, the system normally operates at three-phase 220V. Different line voltages can be adjusted
      by system transformer.
 
 

K&H MFG. CO., LTD.
Address: 5F, No. 8, Sec. 4, Ziqiang Rd., Sanchong Dist, New Taipei City 241, Taiwan (R.O.C.)
E-Mail: education@kandh.com.tw Tel: 886-2-2286-0700 Fax: 886-2-2287-3066