This testing kit is capable of
test insulation in
transformers, particulars between turns, coil to coil which should be able to
withstand surges due to transients, example, caused
by switching of inductive loads or by lighting strokes.
Transient high voltage pulses are applied instead of testing with continuous voltage (50
Hz.) or DC thereby, simulating actual fault
conditions. The rapid rise time permits
the detection of
insufficient insulation that continuous voltage
testing will not be able to detect.
Solid state electronic control circuitry is provided to
generate pulses at a rate of either 6 / mins. or 12 / mins. Successive
pulses are limited to 50. After the 50th cycle the set automatically gets tripped off.
Single over voltage pulse can also be applied with
a specific push button operation. One voltmeter
will indicate
the amplitude of the output pulse. Pulse will appear between
H. V. output terminal and ground.
Output can be of either polarity
i.e. positive or negative, selectable by polarity select
switch.
Input
:
230 volts, 50 Hz, single phase, AC.
Output
:
Pulsed
High Voltage variable between 0 to 10 kV.
The
set consists of the following:
High
Frequency High Voltage Pulse transformer.
Continuously
variable auto transformer for pulse control.
Solid
state switching components.
Capacitor
& resistors to control pulse shape.
Current
limiting resistor.
Pulse
generating & control circuit consisting of solid state
electronic components.
Indicators
& Control switches.
Pulse
height measurement circuit & indicator.
Mains
switch, fuse, indicating LED & mains input chord of at least
two
meters length.
Coaxial H.V. cable of at least two meters length for
connecting the output to the test sample.
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HIGH VOLTAGE REGULATED POWER SUPPLY
A wide range of High Voltage DC regulated power supply of high
stability is manufactured for
research applications.
PINHOLE TESTER
(Type: PNHT)
PinHole Tester for super enameled wire has following features:
Operation Voltage : 230 volts, 50 C/S, 1 phase, AC.
Drive
Speed
: Constant at 30
cms/second driven by synchronous motor.
Reeling
: Will have sets
of nylon pulleys and drum to drive wire sample inside
mercury
pool.
Drive
: The linear speed
will be 30 cms/sec. + 10%.
Sensitivity
: The relay will
be factory adjusted for sensitivity as required.
Supplies
: Internal
auxiliary supply will be there to generate 24 volts DC or 50 volts DC
for the main test, to drive electronic gears, to drive
relay etc.
Stopping Mechanism :
The drive will be stopped after certain duration by a timer
.By this time only
50 meters of wires tested through the * Mercury Pool.
Pinhole Tester |
NOTE :
THE SCOPE OF UNIT DOES NOT INCLUDE THE SUPPLY OF MERCURY
THE MERCURY
WILL HAVE TO BE PROCURED BY YOU.
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power
thyristor test jig
TYPE-PTTJ01
The
Test Jig is capable to conduct three major tests like, OFF state
forward and reverse blocking voltage, DC triggering characteristics,
ON state current conduction & voltage drop measurement on SCR
under test.
Power
Thyristor Test Jig |
Input voltage: 230 volts, 50 Hz, single phase, AC.
Output-1
[For Blocking state mode]
Continuously
variable 0 to + 3 kV DC peak.
Max. Capacity: 200 mA.
Metering:
Digital voltmeter & ammeter to read peak output DC voltage &
current.
Protection:
One snap acting over current protective device which will "trip
off" the output voltage circuit
in
case
of breakdown of the thyristor under test.
Output-2 [FOR DC triggering characteristics
mode]
Continuously
variable 0-15V DC output with current control facility from 100mA to
1A.
This power source is isolated from the power side.
Metering:
Digital voltmeter & ammeter to read output DC voltage &
current.
One DC triggering module named as gate power source.
Output-3 [FOR ON state current conduction & voltage
drop measurement mode]
Continuously variable DC source to check forward voltage drops of
the device & loading of the device up
to 100A peak DC.
Metering:
Digital voltmeter to measure forward drop peak voltage of the
thyristor under test & digital
ammeter to
read output direct peak current.
Protection:
Snap acting over load circuit.
One Test Chamber is provided with the test jig. The sample
under test is fitted within this Test Chamber
during testing. Interconnecting cables are also
provided.
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CAPACITOR DISCHARGE UNIT
As
per requirement of customer. The above Units are manufactured
particularly for plasma physics
research.
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IMPULSE
CURRENT GENERATOR
As
per requirement of customer.
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