Low-Voltage Current Transformers (0.72 kV max.)
EO1M6, EO1M20, EO1M150
About the Product
Widely used by public utilities and private sectors, these epoxy-cast multi-ratio bushing current transformers (BCTs, or bushing CTs) are typically installed in 23 kV C-GIS (cubicle-type gas-insulated switchgear) for use with measuring or monitoring instruments, or protective relays. Insulated with Araldite® epoxy resin, these products are characterized by superior moisture resistance, excellent electrical performance, and high mechanical properties.
Specifications
- Standards: IEC or IEEE
- Indoor application
- Cast in Araldite® epoxy resin
- Multi-Ratio Bushing CTs (BCTs) / Window-type current transformers
- Designed for 23 kV C-GIS
- Insulation Level: 0.72 kV
- Frequency: 50/60 Hz
- AC/BIL: 4/10 kV
- Other standards and specifications available upon request
Selection Table
| Model | Current Ratios (Multi-Ratio*) | Accuracy/Burden | Approx. Weight(kg) | Window Diameter(mm) | Design |
|---|---|---|---|---|---|
| EO1M150 | 600-500-450-400-300-250-200-150-100-50 / 5A | c100 or 0.3 B-0.9 (600/5A) | 16 | 150 | Fig.1 |
| EO1M6 | 600-500-450-400-300-250-200-150-100-50 /5A | c100 or 0.3 B-0.9 (600/5A) | 16 | 130 | Fig.2 |
| EO1M20 | 2000-1600-1500-1200-1100-800-500-400-300 / 5A | c100 or 0.3 B-0.9 (2000/5A) | 10.5 | 130 |
* Current ratios according to IEEE C57.13
Downloadables
Bushing-Type Current Transformers for 23kV C-GIS
Easy-to-print document, containing product description, specifications, and a selection table.
CT & PT Selection Guide: How to Choose a Current Transformer or Potential Transformer
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.