Energy meter CT’s made using hybrid cores are DC immune current transformers for energy meters meeting IS 13779 / IEC 62053. The CT is small in size with customized casing and metal shield, (optional) for protection against external magnetic field. The wound CT is epoxy potted for durable and long life performance. Number of turns can be wound/adjusted as per customer requirements. CTs can be provided with or without metal shield in custom casings.
Electrical Specification:
Model
CT (10-60 Amps) / ( 5 - 30Amps)
Inductance
80-100H -- 90-200H
DC Resistance
80-100 ohms
No. of turns
2500
Operating temp.
-40° C ≈ 70° C
Storage Temp
-40° C ≈ 85° C
Core material
Nano crystalline and Amorphous (Hybrid)
Accuracy
0.1 class
Mechanical Specification:
Plastic Casing
Nylon 6 / ABS / PC / PBT ( as per customer spec)
Secondary termination
PVC / PTFE multi-strand wires or pcb solder pins
Approx wt.
As per model
Metal shield
Zinc plated Mild Steel, app 1.5 /1.6mm thick, deep drawn
Epoxy material
Non- hygroscopic Transparent / black potting material
Primary conductor
Finished CTs with 8 / 9 mm dia hole or with built-in copper bus bar/braided wire of suitable current rating
Mechanical Dimensions :
Application
For direct connected / whole current Energy Meters
DC Immunity as per IS 13779 / IEC 62053
Advantages
Many custom designs possible
Can be provided as full assembly, comprising of CT with primary conductor and welded brass terminals
Small size
Material List:
No.
Item
Description
Material
1
Core
24.5 OD x 16.5 ID x 8.0 Th (10-60A)
Hybrid Core
2
Wire
38 /40 SWG
Copper-Multi Strand
3
Epoxy
Acrabond 774 /Dr Beck
Epoxy
4
Lead wire
PVC/PTFE Multi strand
--
5
Metal shield
Deep drawn, Zinc plated, 1.5mm
Mild Steel
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