ABS-Encapsulated Low-Voltage Current Transformers for Indoor Use (Window-Type)
About the Product
The POS Series window-type low-voltage current transformers, intended for 600V (max.) power systems, are appropriate for electric engineering applications and distribution switchgears. Every POS Series current transformer is contained in an ABS exterior (self-extinguishing) and encloses a high-quality coil, along with an annealed oriented core - all manufactured for rated accuracy and output. On the primary side, wiring can be done with a busbar or with insulated wire. Compact and lightweight, each of these current transformers can be installed either horizontally or vertically; in addition, the product is designed in such a way that installation in a smaller space (e.g. in a motor control center) poses no difficulty for secondary wiring or fastening the CT base. The range of Rated Burden is from 1.0 VA to 40 VA, and the Accuracy is Class 0.5, 1.0, or 3.0, depending on the Primary Ampere-Turn (AT). The POS Series products meet various international standards and have consistently earned a high level of customer satisfaction.
- Standards: IEC, IEEE
- Rated Voltage: ≤ 0.72 kV
- Frequency: 50 / 60 Hz
- AC/BIL: 3 / - kV
- For indoor applications
- Self-extinguishing ABS exterior provides a high level of insulation and excellent moisture resistance
- Compact and lightweight – ideal for wiring and installation in smaller spaces
- Top-facing terminals for easy wiring
- Terminal covers (optional)
- Other Standards and Specifications available
Burden (VA) & Accuracy (Class) *
Rated Burden: 1 ~ 40 VA
Accuracy: 0.5, 1.0 & 3.0 CL.
Primary Ampere-Turn (AT) **
Secondary Current (A)
75 ~ 300
5 or 1
100 ~ 500
300 ~ 800
500 ~ 2000
800 ~ 3200
* The Burden (VA) and its corresponding Accuracy (Class) are determined by the Primary Ampere-Turn (AT) of the Current Transformer.
** Primary Ampere-Turn (AT) = Primary Current (A) x Primary Turns (T).
- Related Products
EOS-RN / EOS-RM Series
Current transformers with a Primary Current of 100A~3200A. Burden & Accuracy: 15～30VA/1.0CL. Wiring with insulated wire or a busbar on the primary side. Alternative billing-purpose usage. Many window sizes.
1 core. Rectangular, low-voltage, resin-insulated current transformers for switchgear-panel makers et al. For use with measuring or monitoring instruments. This current transformer can be mounted on a busbar or fixed directly to the switchgear panel.
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.
For the need of a higher current ratio and accuracy. A greater window diameter facilitates installation and wiring in a high-current application. Multi-ratio models available. Araldite® epoxy.
Low-Voltage Current Transformers / Extended Range Current Transformers (ERCTs) for Billing, Window-Type
For 600V (max.) power systems, these current transformers offer a 0.3 Metering Class accuracy. ERCT specifications also available. Secondary side includes a short-circuiting device. Terminal cover sealable. Various window diameters and current ratios.
2-core & single-core models. Indoor window-type current transformers for the main panel or motor control panel of a MV (≦ 3.6 kV) power system. Good for protection and appropriate for measuring and monitoring instruments. Araldite® epoxy resin.
- 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.