Technical Specifications

Specifications

• Aluminum rack: of 1 X 4 matrix used as flat panel demo panel system to house 4 panels needed for the trainer ordered.
• Dimensions : 500(H)X910(L)X300(D)mm
• Power Analyzer, Panel : The micro-processor-based instrument Displays, Stores, and Communicates up to 63 major electrical parameters including true RMS Voltage, Current, PF, Frequency, Active Power, Reactive Power, Apparent Power, Active Energy, Reactive Energy, Apparent Energy, Total Harmonic Distortion (THD), Maximum Demand. The instrument offers simple user-friendly programming of Voltage, Current and Power measurement parameters using a menu driven interface. Status of all parameters can be viewed on LED Displays. The instrument offers the option of digital RS485 communication.

1]   3 Phase HV Thyristor control Trainer

      Electrical Specifications

• Sturdy stud type 6 SCRs (anode to body type) with PIV rating 1000V/25Amp and 6 diodes with PIV ratings of 1000V/16A, however actual use is limited to 300W for equipment safety.
• 6 Nos. of Snubbers for protection of thyristors consisting of capacitor 0.1uF/1000V and 0.1E/5W ceramic resisters.
• The Power Module with 36 shrouded bananas to construct 3 phase HV circuit configurations.
• Cosine firing scheme to facilitate linear control between firing angle & DC load voltage, also gives better harmonic ripple control.

 Panels:

• Input 3 phase DOL/MCB Starter panel
• Integrated 3 phase AC measurement panel.
• 3 phase SCR firing/Synchronizing Panel + 6 SCR/Diode Power Module
• Lamp load panel 100W x 3nos.
• EMT6B : Voltmeter(600V), Ammeter(5A)
• Inductive Load panel (Optional).
• Optionally 3f step down (430/110Vac) Isolation Transformer or 3f dimmer of 500VA may be ordered from safety point of view.
• Optional 3 phase induction motor (F.H.P.).

Experiments

• Study of 3 phase SCR cosine firing circuits
• 3 Phase half bridge uncontrolled
• Full bridge uncontrolled
• Half bridge controlled
• Full bridge controlled
• Single phase cyclo-converter (25Hz / 12.5Hz).
• 3 phase AC power control for resistive lamp load / 3f Induction motor (Optional).

2] Single phase dual converter trainer

       Electrical specifications

• 2 No. CTs (1A/ 30mA) to detect current zero condition in each converter bridge
• 2 No. current limiting chokes with rating 750mH/1A
• 15W/60W lamp loads / DC motor 200Vdc/200W with1500rpm.
• 4 SCR based full bridge output 0V-195V / 3 Amp, cosine firing with linear charateristics

       Panels 

• Instrumentation power supply panel.
• 2 Nos. of SCR actuator panels as Forward & Reverse controlled converter
• Single phase dual converter controller panel.
• 1phase MCB isolator panel.

       Experiments covered.

• Study of Dual converter topology & control strategy.
• Study of Dual converter operation: Resistive load / motor load.

3]   Motor speed control trainer    

4]  UPS Trainer (OFF line)

      Electrical Specification

• Input Range is 170 – 270V A.C. / 50Hz.
• Output (Input present) 195 – 250V sine.
• Output (Input unhealthy/ absent) 230 +/- 5% Quasi-sine.
• Capacity 200W lamp load on AVR.
• Battery 12V / 7Ah, ‘Panasonic’ (maintenance free lead acid).
• Backup of 5 mins on 200W lamp load or 20 min. on one PC with colour monitor (14”).
• Test points provided are 17

Panels

• Input / Output Module / UP1.
• Battery / Transformer Module / UP2.
• AVR / Charger Module / UP3.
• Inverter Module / UP4.

Experiments covered:

• Study of charger
• Study of Inverter
• Study of UPS