Combined Low Power Instrument Transformer
NEW ! Read our 2020 CIGRE Paper “Accuracy study of a combined low-power instrument transformer in different climatic and pollution conditions. This paper presents an investigation of the behavior of a novel combined low-power instrument transformer with electronic voltage transformer (EVT) and optical current transformer (OCT) in various climatic conditions, along with the ageing influence caused by extreme weathering conditions on the primary parts and converters. The performance of the LPIT is evaluated at different times during the project based on comparison with a conventional solution.
CONDIS|Profotech Combined LPIT (Low Power Instrument Transformer) provides a digital measurement solution for revenue-metering, protection and power quality assessment within your substation.
The Combined Instrument Transformer consists of an Electronic Fiber-Optical Current Transformer (EFOCT) and an Electronic Voltage Transformer with a Capacitive Divider (EVTCD), integrated into a single unit. The digital interface fully conforms to the IEC 61850 standard.
Patented optical fiber in the EFOCT enables highly accurate digital measurements. The precise and reliable EVTCD is based on our over 100 years of CONDIS technology innovation.
The CONDIS|Profotech combined LPIT is easily integrated into existing utility infrastructure to achieve a modernized substation.
Blog articles about cLPIT
|Rated voltage, kV||100 to 145 *|
|Rated primary current, A||100 to 3'000|
|Accuracy class according to IEC 61869|
|Range of operating temperatures, °С|
|Nominal load (analog output, per phase), VA:|
|Distance between sensor and electronic unit, m||up to 1200|
|Power consumption, W||100|
|*others on request|