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Lindsey - Polysil Overhead Line Post Voltage & Current Sensors
FromLindsey Systems
Accurate, Real-Time Measurement. Lindsey Systems’ line post sensors have provided excepOonally reliable and highly accurate voltage and current monitoring for substaOon, overhead and pad-mount distribuOon applicaOons since 1982. These sensors are constructed out of Polysil, an advanced silica/resin composite insulaOon material developed in conjuncOon with EPRI. Line post sensors are available in various sensor configuraOons and in four different physical packages. All sensors can be used in place of any verOcal or horizontal line post insulator. This provides great flexibility both in installaOon and in applicaOons.
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- Voltage-only sensing using precision resistive divider sensors providing 0.5% accuracy.
- Current-only sensing using either Lindsey Systems MultiCore or window CT sensors. MultiCore sensors offer fundamental frequency accuracy of 1%. Window CTs provide up to 0.3% accuracy and flat frequency response through the
- 40th harmonic.
- Voltage and current sensors, incorporating a combination of the above sensors.
- Calibration of current and voltage signals is virtually unaffected by conductor material, size, temperature, armor rod, adjacent phases, line angle or insulator contamination.
- RaOo : By catalog number
- Output Impedance : Calibrated for a 1 MΩ load
- Accuracy* : +/- 0.5% from -40° C to +55°C
- Phase Shift : 0 degrees for sensors with raOos of 1400:1 or greater, -2 degrees per 10 feet of cable for lower raOos