Thứ Hai, 1 tháng 8, 2011

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Fault Indicators and Sensors

The Fault Indicator and Sensor Division designs and manufactures fault indicators and sensors, supplying utilities around the world with products that help reduce fault-finding time so that power can be restored quickly after a fault occurs. In business since 1950, this division of SEL is the electric power industry's leader in fault indicator technology, producing the widest variety of fault indicator products.
Top Five Reasons to Use the AR360 
  1. Best visibility through full 360-degree viewing
  2. Superior inrush restraint logic
  3. Lowest trip value
  4. Trip response time of 24 ms nominal
  5. Widest clamping range


Overhead Fault Indicators
SEL offers a variety of fault indicators for use on unfused taps, long feeders with midline reclosers or sectionalizers, overhead to underground transitions, and feeders that experience recurring faults.
Choose from manual, timed, or automatic reset models, line or battery powered. Easy to install and maintenance-free, SEL fault indicators help identify and locate temporary and permanent faults faster, enabling the utility to make repairs and restore power faster.
Underground Fault Indicators
SEL offers a variety of fault indicators for use on subsurface or pad-mounted transformers, subsurface or pad-mounted switchgear and sectionalizing cabinets, junction boxes, and splices. Choose from single-phase underground or three-phase underground (single-phase sectionalized or three-phase sectionalized), depending on your application. Select from manual, timed, or automatic reset models, cable- or battery-powered. An auxiliary contact option provides SCADA compatibility. SEL fault indicators help identify and locate temporary and permanent faults faster, enabling the utility to make repairs and restore power faster.
Wireless Solutions
SEL is continuously developing new radio communications products for underground applications. The SEL RadioRANGER® Wireless Fault Indication System works with an RF link between the Wireless Interface and a Remote Fault Reader, enabling crews to determine the fault indicator status and locate faults on distribution networks, without needing to enter a vault or open a pad mount. The WSO - Wireless Sensor for Overhead Lines stores load and temperature data, and monitors the distribution line for loss of voltage, loss of current, or fault events. Data packets are periodically transmitted by radio. With either product, faulted sections of cable are detected in half the time, line crews can be dispatched faster, and service is restored.
Tools and Sensors
These may be used in conjunction with SEL fault indicators or as stand-alone devices.

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