Continuously variable/manually variable D.C. Rectifier unit to be
used in the Electrical Engineering Laboratories, with the following technical
specifications :-
|
Input
|
:
|
415
Volts, 3 phase A.C. 50 Hz.
| |
Output
|
:
|
0-250
Volts continuously variable.
| |
Cooling
|
:
|
Natural
air cooling.
|
|
a)
|
A continuously variable auto transformer of adequate capacity with motorised control
and ON/OFF switch with contactor and also manual correction facility.
|
|
b)
|
An isolated 3 phase transformer of input 0-415 Volts, star connected, output 0-250
Volts, delta connected, air cooled with 10% overloading capacity.
|
|
c)
|
Rectifier circuit block to connect with the above with suitable heat sink.
|
|
d)
|
Ripple soothning choke is connected to reduce the ripple at the output.
|
|
e)
|
A miniature circuit breaker is provided in input to protect the Variac and Transformer
for possible short circuit.
|
|
f)
|
A D.C. Circuit breaker is introduced in output to protect the unit from output
short circuit.
| |
g)
| |
Monitor
:
|
:A.C.
Voltage monitor analog with selector switch at input A.C. Volts
:Analog monitor at output D.C. Current and D.C. Voltage
|
|
|
100
Amps, 250 Volts.
| |
| |
|
75
Amps, 250 Volts.
| |
| |
|
50
Amps, 250 Volts.
| |
| |
|
30
Amps, 250 Volts.
| |
| |
|
20
Amps, 250 Volts.
| | |
h)
|
A.C.
Input R Y & B pilot lamps.
| |
i)
|
D.C. output pilot lamps.
| |
The
entire system will be housed in well ventilated M.S. cabinet duly powder coated
and all controlling devices will be brought out and terminated on top panel duly
marked for easy operation. The unit will be of floor mounting type with suitable
castors for easy transportation.
|
|
Top