Current Transformers


BAR PRIMARY AMMETER CTs
TYPE 2501

These CTs are housed in Black ABS plastic moulded cases. They are meant to be used with AMMETERS ONLY. Ratio error is adjusted to ± 1% Phase error not being important fs teft Uncompensated.


RATIOS AVAILABLE
:
100/5A to 600/5A
BURDEN
:
2.5VA
ACCURACY
:
±1%

BAR PRIMARY TAPE INSULATED
TYPE 2502 / TYPE 2503

MEASURING CTs

TYPE 2502

RING TYPE
RECTANGULAR TYPE
TYPE 2503
These are air cooled, Tape insulated suitable for use directly on busbars. Ring type CTs can also be supplied with mounting clamps.

RATIOS AVAILABLE
:
50/5A to 6000/5A
ACCURACY
:

Class 0.2 to class 5 depending upon the burden and ratio

BURDEN
:
2.5VATO30VA
NOTE : For rectangular CTs minimum order qty should be 25 pes per range.

BAR PRIMARY RESIN CAST MEASURING CTs
TYPE 2504

These CTs are Resin Cast type having round central hole. Can be used in dusty and corrosive atmospheres. The CTs are supplied complete with bracket for fixing to boards and with cap for sealing secondary terminals.


RATIOS AVAILABLE
:
100/5A to 2000/5A.
ACCURACY
:
Class 1
BURDEN
:
5VA for ratios 100/5 - 300/5A
15VA for ratios 400/5 - 2000/5A

BAR PRIMARY PROTECTION CTs
TYPE 2505

These CTs are Tape insulated air cooled Bar Primary Type suit­able for protection of switchgears & associated equipments, Relays etc.


RATIOS AVAILABLE
:
100/5 to 3000/5A
ACCURACIES
:
Class 5P & 10P
ACCURACY LIMIT FACTOR
:
5,10,15
BURDEN
:
5VA-15VA, 20VA, 30VA

WOUND PRIMARY RESIN CAST MEASURING CTs
TYPE 2506

The Primary winding is wound over the secondary winding of the CT and forms an integral part of the CT. These CTs are used to obtain better accuracies for ratios where the primary current is less than 100A such as 10/5,15/5,20/5 etc. Can be used in oily, dusty or corrosive atmospheres. These CTs are supplied complete with mounting clamps and cap for sealing secondary terminal.


RATIOS AVAILABLE
:
10/5 to 400/5A
ACCURACY
:
Class 1&0.5
BURDEN
:
5VA, 10VA, 15VA.

PORTABLE PRECISION GRADE CTs
TYPE 2508

These CTs are housed in wooden cases with bakelite insulated panel with appropriate terminals for primary & secondary. Arrangement for shorting the secondary terminals is also provided. The boxes are provided with carrying handles and rubber gromets. A central hole is provided (in some models) to extend the primary rating of the CTs. These are used in Laboratories and Test Benches as Standard CTs. CTs of other ratios can be made against request.


TYPE

PRIMARY

SECONDARY

BORDEN

ACCURACY

MCTP-1

600, 300, 200, 100, 50, 25, 10, 5A

5A

5VA

0.5

MCTP-2

1200, 600, 400, 300, 200, 150, 100, 75, 50, 30, 20, 10A

5A

15VA

0.2

MCTP-3

1500, 750, 500, 300, 250, 100, 50, 30, 15, 10A

5A

15VA

0.2

MCTP-4

100, 50, 25, 10, 5, 2.5, 1, 0.5A

5A

15VA

0.2


BAR PRIMARY PLASTIC CASE CTs AS PER DIN STANDARDS

These CTs are encased in ABS Plastic casing and are suitable for metering application. The central opening is rectangular in shape and hence can be slipped over bus bar easily. These CTs can be used in dusty atmospheres. They are supplied with cap for sealing the secondary. Mounting brackets are supplied.

TYPE 2509
RATIOS AVAILABLE : 50/5A to 2000/5A ACCURACY : Class 1& 0.5 BURDEN : 1.5VA to 15VA.
NOTE :

1) Model 250909 of ACC 0.5 & 15 VA can be supplied.
2) CT's with 1A secondary can be supplied at extra cost.


 

MINIATURE CURRENT TRANSFORMERS


BAR PRIMARY TYPE MINIATURE CURRENT TRANSFORMERS
Ratio
Burden
Acc. Class
100/5A
5VA
1.0
125/5A
5VA
1.0
10VA
3.0
150/5A
5VA
1.0
10VA
3.0
 
  1. Short time Thermal current 80 In for 1sec.
  2. Saturation Factor >5
 
Ratio
Burden
Acc. Class
200/5A
10VA
1.0
250/5A
10VA
1.0
300/5A
10VA
1.0
 
  1. Short time Thermal current 80 In for 1sec.
  2. Saturation Factor >5

 

WOUND PRIMARY TYPE MINIATURE CURRENT TRANSFORMERS
Ratio
Burden
Acc. Class
2/5A
5VA
1.0
5/5A
5VA
1.0
10/5A
5VA
1.0
15/5A
5VA
1.0
20/5A
5VA
1.0
30/5A
5VA
1.0
40/5A
5VA
1.0
50/5A
5VA
1.0
60/5A
5VA
1.0
75/5A
5VA
1.0
 
  1. Short time Thermal current 40 In for 1sec.
  2. Saturation Factor >5
 
Moving Iron AC Panel
Moving Coil DC Panel
Portable Meters
Current Transformers
Ohms Meter
Shunts & Miniature Shunts.
Cell Testers.
Frequency Meters.
Vibrating Reed Type
 
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