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Apart
from manufacturing the mentioned test sets, we also
manufacture equipment according to
specific requirements of
customer.
 AC
PRIMARY CURRENT INJECTION SET
DC HIGH CURRENT LOW VOLTAGE SET
Control
Unit |
Loading
Unit |
|
AC
Primary Current Injection Set is designed to carry out tests
of circuit breakers, current transformers and many other
applications where heavy current supply of short duration is
required. During installation, especially if the protective
gear is connected to the power line via a current transformer,
the set can be used as a convenient means for delivering,
controlling and measuring heavy current in a comparatively low
voltage and low impedance circuit.
Input:
230volts, single phase, 50Hz. AC upto 10KVA. Above this
range, generally, the power supply of the
set is 415V (two phase out of three phase), 50Hz. AC |
Output:
Continuously
variable output current is available either in one (1R) / two
(2R)/three (3R) /four(4R)
/ five (5R) current setting mode (range) and
one current output mode is available at a time.
Series:
PCNTXRU;
X denotes the current setting mode, either one (1R) /two (2R) /three
(3R) /four (4R)
/five
(5R). U denotes no. of units i.e. either 1 (one) or 2(two) units.
Type: YYYAZZV;
YYY denotes the maximum current capacity in Amp.
While, for YKAZZV; Y denotes
the maximum current capacity in kAmp.
ZZ denotes the open circuit voltage rating.
We manufacture these sets in wide range upto 6KA and of
various capacities. Sets of three phase current
output are also manufactured upto a range
mentioned before.
Sets
above 2.5KVA are usually manufactured in two units namely, (I)
Control & measuring unit
(ii) Current loading unit.
For
sets in one unit, variable voltage supplied to the current loading
transformer are available at a pair of
output terminals
named as low current voltage terminals. A voltmeter is provided to measure the output
voltage. But sets in two units do not have these provisions.
Loading
transformers are air natural .The KVA rating of each output mode is
same upto 3-range (3R).
In
general all the equipment are designed for a standard duty cycle of
5 minutes ON and 10 minutes OFF.
Built-in
type "Ntpl"
digital time interval meter can be provided at extra cost.
Multi-ratio
wound primary measuring CT with analog metering is provided. Digital ammeter can be
provided at extra cost.
Protection
against overload, short circuit provided.
"Ntpl"
is also interested to supply current injection sets according to
customers’ requirements.
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DC
HIGH CURRENT LOW VOLTAGE SET
The
above test is capable to test samples having low resistance and
where high direct current injection is required like switches,
busbars, relays
etc.
Input: 3 phase, 415 volts, 50Hz AC,
subject to variation between 380 to 440 volts.
Output:
By smooth variation of three phase Auto-Transformer, which
supplies variable voltage to the
primary of a three phase double wound, delta/double
star rectifier transformer, secondary of which
is connected to a rectifier stack
using silicon diodes along with surge suppressor. The D.C. output
is obtained from
the rectifier bank output and the star points of the transformer through an
interphase transformer.
Series:
LVHDCXXU; XX denotes DR or OC i.e. either the transformer will be
dry type or oil cooled
type.
U denotes no. of units – either one (1) or two (2).
Type:
YYYAZZV; YYY denotes the maximum
current capacity in Amp.
While,
for YKAZZV; Y denotes the maximum current capacity in kAmp.
ZZ
denotes the open circuit voltage rating.
We manufacture these sets in wide range upto 6KA and of
various capacities.
Duty Cycle: Intermittent.
Protection against overload & short circuit is provided.
“Zero Start Interlock” protection is also
incorporated.
Metering: Analog Voltmeter & shunt operated Ammeter.
Digital meters can be provided at extra cost.
NOTE: Beside above standard models we will be glad to
manufacture High D.C. Injector of other current
&
voltage rating as required by the customer.
This set can also be used as loading
unit for electroplating applications.
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