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 or 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
2 cores. Rectangular, low-voltage, resin-insulated current transformers for switchgear-panel makers et al. Dual-purpose current transformer, for use with measuring or monitoring instruments in addition to protective relays (simultaneously). This current transformer can be mounted on a busbar or fixed directly to the switchgear panel.
Split-core, rectangular, low-voltage, resin-insulated protective current transformers for switchgear-panel makers et al. Installs easily onto an existing power system.
ABS-encapsulated and rectangularly shaped, these split-core, window-type, low-voltage current transformers are self-extinguishing and have a high level of insulation and moisture resistance.
- Download Materials
Easy-to-print document, containing product description, specifications, and a comparison table.
Download PDF for basic drawing(s) and dimensions of this product. For more detailed information, please contact CIC.
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.