Outdoor Revenue-Metering Instrument Transformers: Exceptional Reliability Driving Popularity
2023/07/14 Challenge Industrial Co., Ltd. (CIC)Since their first introduction, CIC’s outdoor revenue-metering instrument transformers have been well-received by power companies not only in Taiwan but in several Asia and American countries, including Japan, Mexico, and the Philippines.
CIC offers a range of outdoor instrument transformers for 10 - 36 kV applications. These include the VPF Series voltage transformers, with accuracy ranging from Class 0.2 to Class 0.5, as well as the AWF Series current transformers, which come in accuracy classes such as 0.2, 0.3, 0.15 and 0.15S, along with the option for extended-range current transformers (ERCT).
Extended-range current transformers are made for precise metering of even the smallest currents, optimizing revenue generation for utility providers. An AWF Series ERCT has a Rating Factor (RF) of 2.0, which means it can maintain its rated accuracy and burden rating while measuring 1% to 200% of its rated current, surpassing the usual metering-class requirement, which is 5% to 100%. The wider measuring range of ERCTs allows utility companies to streamline their inventory requirements by stocking fewer current transformer models.
Made with cycloaliphatic epoxy resin, CIC's outdoor instrument transformers exhibit exceptional durability against harsh environmental elements. They withstand long-term exposure to solar ultraviolet radiation, salt fog, high temperature, and high humidity while maintaining stable performance. This resilience is particularly valued by power companies operating in maritime climates.
In addition to offering numerous standard specifications requested by clients, CIC specializes in providing customized models to meet unique usage requirements and conditions, further enhancing customer satisfaction.
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Outdoor-Type Current Transformers / Extended Range Current Transformers (ERCTs) for Revenue Metering (12~36 kV)
AWF-12, AWF-24, AWF-36
These outdoor current transformers for revenue metering, intended for 12~36 kV power systems, are used as part of an MOF (Metering Outfit) or for current monitoring. Insulated with UV-resistant cycloaliphatic epoxy resin, these medium-voltage (MV) current transformers are ideal for outdoor use and can be available as Extended Range Current Transformers (ERCTs) when requested.
Outdoor-Type Voltage Transformers (Potential Transformers) for Revenue Metering
VPF Series
Cast in Araldite® UV-resistant cycloaliphatic epoxy resin, these medium-voltage (MV) voltage transformers (potential transformers) for revenue metering are designed for long-term outdoor use in harsh conditions such as solar ultraviolet radiation, salt fog, high temperature, and high humidity. Designed to be part of a Metering Outfit (MOF).