Dry-Type Bushing Current Transformers for GIS or Power Transformers
About the Product
Dry-Type Bushing Current Transformers TB-1M Series, suited to power transmission and distribution systems, are intended to work with measuring or monitoring instruments, or with protective relays. These current transformers can also be used in gas-insulated switchgear (GIS) – the CT is placed in either SF6 gas or in air. Alternatively, these current transformers can be used in conjunction with power transformer bushings; in this case, the CT is immersed in insulation oil. CT sizes can be specially requested, and the customer can choose between insulation tape or epoxy resin for the insulation material. The secondary side can be equipped with either lead wires or secondary terminals.
- Standards: IEEE or IEEE
- Frequency: 50 or 60 Hz
- AC/BIL: 4/10 kV
* Current ratios according to IEEE C57.13
Note: Other standards and specifications available upon request
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- Download Materials
Easy-to-print document, containing product description, specifications, and a selection table.
How to select, based on application and power system attributes, the primary and secondary currents, burden, accuracy, rated frequency, type (indoor vs. outdoor), insulation material, etc.