Current sensing switch for motor monitoring

The ASXP Current Sensing Switch from NK Technologies is designed to solve maintenance requirements for single- and three-phase motors

09/07/2012


The ASXP Current Sensing Switch from NK Technologies is designed to solve maintenance requirements for single- and three-phase motors. Courtesy: NK TechnologiesNK Technologies' ASXP Current Sensing Switch is now available with a user-adjustable setpoint from 1 A - 80 A. ASXP Series Current Operated Switches are powered versions of the company’s switches with integral time delay. For use with 24 V ac/dc or 120 V ac supplies, these switches deliver OEM-caliber accuracy, precision tolerances, low hysteresis and an operation range between 40 Hz and 100 Hz, functionality, said to be ideal for monitoring single- and three-phase motors. They come standard with a robust solid-core enclosure and LED indicators for trip point contact status.

In motor protection applications these sensors provide electronic proof-of-operation and detect current draw changes in the motor caused by pumps running dry or impending bearing failure. The ASXP is less expensive to install and serves as a non-intrusive alternative to differential pressure flow sensors or thermal switches. They also deliver quicker response times than Class 10 overload relays. Users will also benefit from repeatable performance, constant hysteresis and linear response.

NK Technologies

www.nktechnologies.com 



No comments
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
Water use efficiency: Diminishing water quality, escalating costs; Lowering building energy use; Power for fire pumps
Building envelope and integration; Manufacturing industrial Q&A; NFPA 99; Testing fire systems
Labs and research facilities: Q&A with the experts; Water heating systems; Smart building integration; 40 Under 40 winners
Maintaining low data center PUE; Using eco mode in UPS systems; Commissioning electrical and power systems; Exploring dc power distribution alternatives
Protecting standby generators for mission critical facilities; Selecting energy-efficient transformers; Integrating power monitoring systems; Mitigating harmonics in electrical systems
Commissioning electrical systems in mission critical facilities; Anticipating the Smart Grid; Mitigating arc flash hazards in medium-voltage switchgear; Comparing generator sizing software
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.