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Current Transformers
As it is not possible to use line current directly for measurement and protective relays due to its high value & insulation problem. Our bar primary CTs, Cast Resin CTs current transformers and control transformers are used to :
  • Reduce the line current to a value (e.g 1 amp.) which is suitable for standards measuring instruments, relays etc.
  • To isolate the measuring instruments, meters, relays etc. from direct line.
  • To protect measuring instruments against short circuit current.
  • Principal of operation:-Current transformer works on the principal of variable flux. In the ideal current transformer, the secondary current would be exactly equal to(multiplied by turns ratio) the primary current. But in practice, some of the primary amp-turns are used for magnetizing the core.This causes an error, which is termed as current (ratio)error and phase error.



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Low tension transformer (Cast Resin )
We manufacture Bar primary cast resin CTs (ring type) which are mechanically stronger,dust proof,compact design and easy to connect in existing switchgear.They are used in Control panels ,Switchboard and Generator panels (?Metering, protection and special protection ps class).Its window is suitable for round or rectangular primary conductor or bus bar?and sealing arrangement for secondary terminals.

SPECIFICATIONS:

Primary Current
: 50 to 3000A
Secondary Current : 5, 1, 5/rt3, 1/rt3A
Accuracy Class :
For Metering : 0.5 to 5 A
For Protection : 5P, 10P accuracy limit factor 5,10,15,20
For PS Class : Knee point voltage (VK), secondary resistance
?????????????????????????? and magnetizing current is required.
Burden : 1.25 to 30 VA
Mounting : Threaded inserts for floor mounting.

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Low tension transformer (Tape wound & cap insulated)
We manufacture Tape Insulated Bar Primary CTs ( Ring & Rectangular Type) which are generally prefered because they are simple in construction, mechanically stronger, economical and easy to connect in existing switchgear. They are used in control panels and generator panels(Metering , protection and special protection ps class).they are available in round or rectangular window and suitable for a wide range of electrical test equipment.

SPECIFICATIONS :

Primary Current :
50A to 6000A
Secondary Current :
 5,1,5/rt3 and 1/rt3 A
Accuracy Class :
For Metering CTs : 0.5 to 5A
For Protection CTs : 5P,10P accuracy limit factor 5,10,15,20
Burden : 1.25 VA to 60 VA
Mounting :
M.S. clamp if required.


Low%20tension%20transformer%20%28Tape%20wound%20%26%20cap%20insulated%29
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Wound%20Primary%20Current%20Transformers
Wound Primary Current Transformers
We manufacture wound primary CTs (Tape and Resin Cast) designed for large burdens and better accuracies (Metering, Protection and Special protection PS Class). Secondary terminal with threaded insert and primary with brass plated studs suitable for precision measuring test apparatus. Multiratio C.T. available in the portable wooden case to be used as laboratory standard.

Specifications:

Primary Current : 1 to 100A

Secondary Current : 5, 1, 5/rt3, 1/rt3A

Accuracy Class :

For Metering : 0.1 to 1 A
For Protection : 5P, 10P accuracy limit factor 5,10,15,20
For PS Class :    Knee point voltage (VK), secondary resistance
                           and magnetizing current is required.
Burden :             5 to 60 VA

Mounting :          Threaded inserts for floor mounting.



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Summation Current Transformers
We?manufacture resin cast summation CTs which summates the current in a number of feeders in association with feeder current transformers.'When current flows in more than one feeder is required to be metered summation current transformer are used. These CTs are provided with more than one primary winding and one common secondary. The standard primary & secondary currents are 5 or 1 amp. Summation current transformers are generally manufacture-confirming to ISS 6949.


Specifications:

Primary Current :?5 to 1 A
Secondary Current : 5 or 1
Accuracy Class : 0.2, 0.5,1 A
Burden : 1.25 to 30 VA
Mounting : Threaded inserts for floor mounting.


Summation%20Current%20Transformers
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Interposing%20Current%20Transformers
Interposing Current Transformers
We manufacture Interposing CTs (Resin Cast ) for matching of ratio with main C.Ts in different protection scheme.

SPECIFICATIONS :

Primary Current
: 5 to 1A
Mounting : Threaded inserts for floor mounting.


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Core Balance or Zero Sequence Current Transformers
We manufacture Core balance or Zero sequence (Tape or Resin Cast ) CTs. These are  for sensitive earth leakage protection and earth fault protection. These are suitable for Bus bar of panels/ bus duct and cables etc.These are ring or rectangular type CTs & suitable for the measurement of the sum of three phase currents in a 3-ph cable. Under normal operating conditions this sum is zero. In the event of an earth-fault the sum of the current is equal to the zero sequence current. It is necessary to specify leakage current to be detected along with minimum setting of the relay and size of cable at the time of ordering CT.

Primary Current :

300 mA to 10 A
Core%20Balance%20or%20Zero%20Sequence%20Current%20Transformers
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High%20Tension%20Currrent%20Transformers
High Tension Currrent Transformers
We also manufacture high tension current transformers ( Upto 11Kv ).

Resin Cast Ring or Rectangular Type.

Resin Cast Bar Primary with Embedded Bar.

Resin Cast Wound Primary (Termination on Stud/Bar).  

SPECIFICATIONS :

Voltage :                  3.3/6.6/11Kv       
PrimaryCurrent :      10A to 2000A 
Secondary Current : 1A, 5A
Insulation Level :      30 KV
Short Time Current : Upto 26.2 KA for 1 second
Class Of Insulation : F
Double Ratio - Triple Core
            
                              Burden           Class Of Accuracy

Core 1 (Metering) :   15 VA                     0.5

Core 2 (Protection):  15 VA             5P , 10P Accuracy Limit 
                                                   Factor  5, 10,15,20

Core 3 (PS Class) :   15 VA             PS ( Knee Point Voltage 
                                                         is required)
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Cast Resin CTs (Rectangular Type)
We manufacture Bar primary cast resin CTs (Rectangular type) which are mechanically stronger,dust proof and easy to connect in existing switchgear.They are used in Control panels ,Breaker panels and Switchboard ( Metering, Protection and Special protection PS class).Its window is suitable for aluminium and copper bus bar and sealing arrangement for secondary terminals.


SPECIFICATIONS :

Primary Current : 600 to 10,000A
Secondary Current : 5, 1, 5/rt3, 1/rt3A
Accuracy Class :
For Metering : 0.5 to 1 A
For Protection : 5P, 10P accuracy limit factor 5,10,15,20
For PS Class : Knee point voltage (VK), secondary resistance
                            and magnetizing current is required.
Burden :          5 to 60 VA
Mounting : Threaded inserts for floor mounting.





Cast%20Resin%20CTs%20%28Rectangular%20Type%29
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High%20Tension%20Potential%20Transformers
High Tension Potential Transformers
We manufacture high tesnion potential transformers (up to 11KV), with dry type resin cast (single phase and three phase) for indoor applications.The primary and secondary winding of potential transformer is magnetically coupled by a core. PT is used to step down the system voltage (3.3,6.6,11 KV) measurable upto 110/rt3, 110 V. The class of accuracy of metering PT is 0.2,0.5,1.0 and of protection PT is 3P.

SPECIFICATION :

Primary Voltage :      3.3 - 6.6 – 11 KV/rt3
Secondary Voltage : 110/rt3 , 110 V
Burden :                    Upto 200 VA
Accuracy Class :       0.2 , 0.5 ,1.0 and 3P
Over Voltage Factor : 1.2 continous and 1.5 for 30 sec.for effectively earth system and 1.9 for 8 hour for non effectively earthed system.
Neutral : Connected to earth.
 
         Connection : Y/Y , Y/
Insulation Class : F
Insulation Level : 30 KV
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Control Transformers
We manufacture control transformers that are designed with very low temperature rise and ensure excellent voltage regulation. These also ensure extreme overload capacity of high momentary in-rush current demand by the contractors, relays and solenoids. The output voltage drop under high momentary in-rush current is also very low, which ensures satisfactory operation of contactors, relays and solenoids.

SPECIFICATIONS :

Input Voltage :
  380 V to 415 V
Output Voltage :
110 V to 220 V
Burden : 50 VA to 2500 VA 
Type : Air Cooled
Control%20Transformers
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CT-PT%20Combined%20Units
CT-PT Combined Units
CT-PT Combined Unit (Upto 11kv) are also called metering units. These units can be offered as dry type or oil immersed. The metering unit consists of :
  • 02 nos. single phase CTs and 01 no. three phase PT.
  • 03 nos. single phase CTs and 01 no. three phase PT.
  • 02 nos. or 03 nos. single phase CTs and 03 nos. single phase PT.
 
CT-PT Combined units are used for both indoor/outdoor applications.
 
 


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Digital meter  new
The Digital panel Meters indicates the voltage, current, freuency, power factor, kilowatt in a single phase and three phase system.

DIGITAL VOLTMETER (AC AND DC)

Range              : 0 to 1000V AC OR DC
Input voltage    : 240 VAC
Type                ; 3 1/2 Digits
Size                 : 96 * 96mm sq.
                         72 * 72mm sq.

DIGITAL AMPAREMETER (AC OR DC)

 Range                 : 0 to 20A  AC OR DC
                         (Higher Ranges in AC or DC
                          With CT & Shunt)
Input voltage         : 240V AC
Type                     : 3 1/2 Digits
Size                      : 96 *96mm sq.
                            : 48 * 96mm sq.

DIGITAL FREQUENCY METER

Range                   : 0 to 99.9 Hz
Input voltage         : 240 V AC
Type                     : 3 Digits
Size                      : 96 * 96mm sq.
                            : 48 * 96mm sq.

DIGITAL POWER FACTOR METER  (SINGLE PHASE & Three
                                                                  phase system)

DIGITAL KILOWATT METER ( THREE PHASE FOUR WIRE 
                                                        SYSTEM)

DIGITAL TEMPERATURE CONTROLER ( J, K, PT100 TYPE)

DIGITAL TIMERS (TWO OR THREE DIGIT)
Digital%20meter
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