Single-Core Low-Voltage Current Transformers (Rectangular Window-Type)
About the Product
Intended for switchgear-panel manufacturers and other users, these rectangular, resin-insulated, low-voltage window-type current transformers are self-extinguishing and highly water-resistant. Each of these current transformers can be mounted on a busbar (the busbar can be either horizontally or vertically installed in the switchgear panel). Alternatively, the current transformer can be fixed directly to the switchgear panel; in this case, wiring can be done with a busbar or with insulated copper wires. The product comes with one type of mounting accessories, to be chosen by the customer from available options.
Features of the ES-1S-A Series
- Designed to be used with measuring or monitoring instruments
- Standard: IEC or IEEE
- For indoor use
- Rated voltage: ≦ 0.72 kV
- Frequency: 50/60 Hz
- AC/BIL: 3/- kV
- Ith = 40 In/1S
- Included: a choice of mounting accessories
- 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|
* Models marked with an asterisk require caution when mounted on a busbar. Care must be taken, when the switchgear panels are being moved or when during an earthquake, to prevent the current transformer from sliding due to its weight.
- Related Products
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- 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.