Description

 

Single Phase Power Transformer Trainer

The fore panel is made of aluminum alloy. Two models of high-voltage power transmission lines are represented with international electric symbols.

Proper educational terminals and jumpers with a high degree of protection against accidental contacts allow to use of the lines separately or in series/parallel connection.

Electric parameters (resistance, inductance, and capacitance) may be changed by means of lever selectors according to the different sections and lengths of the line.

 

TRAINING PROGRAM:

Training refers to the study of power transmission in medium voltage high-voltage networks and to the study of single-phase

transformers.
Main subjects dealt with:
*Models of power transmission lines with concentrated parameters
* Voltage drops and losses in power transmission lines
* Types of line (copper, aluminum)
* Ideal transformer, real transformer
* No load, load and short-circuit tests of transformers, efficiency of a single-phase transformer?

Protection devices of transformers

TECHNICAL CHARACTERISTICS:
SIMULATOR OF POWER TRANSMISSION LINES
A framework is made of chemically treated sheet steel, painted with many epoxy coats; the base is provided with rubber feet and it may be positioned on any working top.

Lines are protected against overload and short circuits by quick blow fuses.
Main installed components:
Modifiable parameter: length (km)
Model of line used: PI
Simulated Un: 11-120 kV, operating Un 400V
Operating In: 1 A
Equivalent distributed R: 10 – 18 – 35
Distributed inductance equivalent to 144 – 72 – 36 mH
Distributed capacitance equivalent to 0.1 – 0.2 – 0.4 μF
Breakers of line start and end Possibility of using lines separately or in series/parallel connection. Dimensions: 1175 x 150 x 750 mm

SINGLE-PHASE POWER TRANSFORMER
It is used as a step-up transformer at the output of the generator, the output is connected with medium- high voltage transmission lines.
Power: 600 VA
Primary voltage: 220V, 50-60 Hz
Secondary voltage: 220V with voltage variation ±5 %,
+ 10 %, + 15 %; phase variation between Primary and Secondary
+/- 5 – 10 – 20 electrical degrees with a zig-zag connection.
Protection: IP 22
Safety terminals with section 4 mm
Dimensions: 360+- x 200+- x 300+- mm