Low-Voltage Split-Core Current Transformers (Rectangular Window-Type) for Protection
About the Product
Intended for switchgear-panel manufacturers and other users, these resin-insulated, low-voltage, window-type current transformers have a rectangular shape and are designed for wiring through a busbar. Each of the these current transformers can be mounted on a busbar. Alternatively, it can be fixed onto a switchgear panel through the provided metal installation fittings, which allow both horizontal and vertical installation. Two types of metal installation fittings are included with each ES-1S-C current transformer. As an option, insulated wires can be used instead as the primary conductor. Caution should be exercised if any ES-1S-C current transformer with a current of more than 1200A is mounted on a vertically installed busbar. In this case, care must be given, when the switchgear panels are being moved or when during an earthquake, to prevent the current transformer from sliding due to its weight. Insulated with self-extinguishing resin, ES-1S-C current transformers are characterized by excellent insulation and moisture resistance.
- Split-core window-type
- For protective purposes
- Can be installed onto an existing system without cutting (or removing) the primary busbar or insulated wires.
- Standard: IEC 60044-1 or IEEE
- For indoor use
- Rated voltage: ≦ 0.72 kV
- Frequency: 50/60 Hz
- AC/BIL: 3/- kV
- Ith = 40 In/1S
- Included accessories: two types of metal installation fittings
- Other specifications and standards available upon request
Other standards and specifications available.
|Secondary Current (A)||Burden/Accuracy
|Core 1||Core 2|
|ES-1S-A||ES-1S-60A||400～800||5||-||30VA/1.0 or 15VA/0.5||2.1||Single-Core|
|ES-1S-80A||600～1200||5||-||30VA/1.0 or 15VA/0.5||2.1||Single-Core|
|ES-1S-100A||1000～2000||5||-||30VA/1.0 or 15VA/0.5||2.2||Single-Core|
|ES-1S-120A||2500～4000||5||-||40 VA/1.0 or 30VA/0.5||3.7||Single-Core|
|ES-1S-165A||4000～7000||5||-||40 VA/1.0 or 30VA/0.5||4.3||Single-Core|
- Related Products
1 core. Rectangular, low-voltage, resin-insulated current transformers for switchgear-panel makers et al. Used with meters. Wiring through a busbar. To be mounted on a busbar or fixed to a switchgear panel.
2 cores. Rectangular, low-voltage, resin-insulated current transformers for switchgear-panel makers et al. For protection or meters. Wiring through a busbar. Mounting on a busbar or fixed to a switchgear panel.
- Download Materials
Easy-to-print document, containing product description, specifications, and a comparison 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.