This document summarizes information about low voltage polycarbonate current transformers provided by Bhairav Joshi. It describes the product range including tube, plug-in, wound primary, and ring type current transformers. It also discusses testing, manufacturing processes involving design, moulding, assembly, acceptability in meeting industry standards, typical business volumes, and packaging options.

1. Converging Innovations, Expanding Solutions

2. Low Voltage Polycarbonate Current Transformers

3. Prepared By:
Bhairav Joshi
Product Range
Testing
Manufacturing
Acceptability
Business Volume
Packaging

4. Prepared By:
Bhairav Joshi
Product Range
Tube Current Transformers Plug-In Current Transformers
Wound Primary Current Transformers Ring Type Current Transformers

5. Prepared By:
Bhairav Joshi
Product Range
Tube Current Transformers Plug-In Current Transformers
Primary Current
(A)
Burden
(VA)
Accuracy
(%)
25 to 800
1, 1.5, 2.5, 3.75,
5, 7.5,10, 15, 20
0.2,0.5,0.5S, 1.0,
3.0, 5 P 5 &
5 P 10
Primary Current
(A)
Burden
(VA)
Accuracy
(%)
30 to 7500
1, 1.5, 2.5, 3.75,
5, 7.5,10, 12.5,
15, 20, 25, 30,
35, 40, 45, 50,
60
0.2,0.2S, 0.5,
0.5S, 1.0, 3.0, 5 P
5 &
5 P 10
Bus Bar Sizes
25 x 10
to
4 x 200 x 10
Inner Diameter = 15 to 21 mm

6. Prepared By:
Bhairav Joshi
Product Range
Wound Primary Current Transformers Ring Type Current Transformers
Primary Current
(A)
Burden
(VA)
Accuracy
(%)
1 to 150 5, 7.5, 10, 15, 20 0.5, 1.0
Primary Current
(A)
Burden
(VA)
Accuracy
(%)
30 to 3200
2.5, 5, 7.5, 10,
15, 20
1, 3, 5

7. Prepared By:
Bhairav Joshi
Product Range

8. Prepared By:
Bhairav Joshi
Product Range
Testing
Manufacturing
Acceptability
Business Volume
Packaging

9. Prepared By:
Bhairav Joshi
Manufacturing
Designing
• Electrical Design
• Mechanical Design
Moulding of polycarbonate casings & Accessories
Assembly
• Winding on core.
• Final Assembly in polycarbonate casing.

10. Prepared By:
Bhairav Joshi
Manufacturing - Design
Component Manufacturing
Tool / Mould Manufacturing
Tool Design & Developments
Product Design & Conceptualization
Product Requirements

11. Prepared By:
Bhairav Joshi
Manufacturing – Moulding & Metal formed parts.
Production facility of polycarbonate casings
Production facility for metal formed parts

12. Prepared By:
Bhairav Joshi
Manufacturing – Assembly
• 10000 Sq. Feet Floor shop for Manufacturing
• Winding & Assembly consisting of:
• Programmable coil winding machine
• Ultrasonic welding machine
• Core Test Bench
• Semi Automatic Hydraulic technique for Resin cast
CTs
• Various molds for Polycarbonate casings & Resin
molding

13. Prepared By:
Bhairav Joshi
Product Range
Testing
Manufacturing
Acceptability
Business Volume
Packaging

14. Prepared By:
Bhairav Joshi
Testing
• Type Tested as per IEC 61869 – 2 (replacing IEC : 60044-1 & IEC 60044-6)
 One minute power frequency High Voltage withstand test on Primary winding.
 One minute power frequency High Voltage withstand test on Secondary winding.
 Over Voltage Inter Turn withstand test.
 Verification of terminal markings and Polarity.
 Measurement of Ratio Error & Phase Angle Error.
 Measurement of Instrument Security Factor for Metering CT.
 Measurement of Composite Error for protection CTs.
 Temperature Rise Test.
 Short Time Thermal Current and Dynamic Current Test.

15. Prepared By:
Bhairav Joshi
Testing
• Routine Test
 One minute power frequency High Voltage withstand test on Primary winding.
 One minute power frequency High Voltage withstand test on Secondary winding.
 Over Voltage Inter Turn withstand test.
 Verification of terminal markings and Polarity.
 Measurement of Ratio Error & Phase Angle Error.
 Measurement of Instrument Security Factor for Metering CT.
 Measurement of Composite Error for protection CTs.
 Temperature Rise Test.
 Short Time Thermal Current and Dynamic Current Test.
 Measurement of Knee Point Votlage(Vk), Winding resistance corrected at 75 ⁰ C (RCT) & Excitation
Current (Iex) at Vk.

16. Prepared By:
Bhairav Joshi
Testing
• Performance Guarantee
‘elmex’ guarantees performance of current transformers according to IEC 618692 – 2 Clause
5.6.201.2 Table 201, as follows:
Accuracy
Class
Ratio Error
±%
Phase Displacement
± Minutes
at current (% of rated) at current (% of rated)
5 20 100 120 5 20 100 120
0.1 0.4 0.2 0.1 0.1 15 8 5 5
0.2 0.75 0.35 0.2 0.2 30 15 10 10
0.5 1.5 0.75 0.5 0.5 90 45 30 30
1 3.0 1.5 1.0 1.0 180 90 60 60

17. Prepared By:
Bhairav Joshi
Product Range
Testing
Manufacturing
Acceptability
Business Volume
Packaging

18. Prepared By:
Bhairav Joshi
Acceptability
• Elmex CTs are
• Elmex Current Transformer have proved its performance at various utilities and are
fully compliant to the specification of these utilities:

19. Prepared By:
Bhairav Joshi
Product Range
Testing
Manufacturing
Acceptability
Business Volume
Packaging

20. Prepared By:
Bhairav Joshi
Packaging
Packaging Options
Finished Product
Pre-branded as required
Tested as per IEC 61869 – 2
Ready for use / Ready for sale
Can handle ‘Trans-Shipments’
LV CTs in
Completely Knock Down
Assistance for setting-up assembly line
Assistance to establishing
Testing system as per IEC 61869-2

21. Prepared By:
Bhairav Joshi
Product Range
Testing
Manufacturing
Acceptability
Business Volume
Packaging

22. Prepared By:
Bhairav Joshi
Business Volume
• INCOTERMS: EXW / FOB / C & F
• Feasible Business Volume: 100,000 USD
• What we need?
• Brand information.
• Agreement to produce for brand.
• Packing information.

23. Thank YouThank You