Press Releases
New DG Series DC Ground Fault Relay Protects Machinery and Operators from Accidental Shocks
SAN JOSE, CA – NK Technologies (www.nktechnologies.com) introduces the DG Series DC Ground Fault Detector. The DG series was designed to keep operators and machinery safe from accidental shocks by detecting fault currents quickly and easily, and can be installed at a fraction of the cost of products currently available. The one-piece, solid-core design allows for installation over wires feeding loads to about fifty amps. The output relay will change state at factory setpoint between 5 and 50 mA of DC current to earth.
Features include:
- Electromechanical relay outputs
- Externally powered with choice of fail safe or standard auto reset, or latching contact
- Solid core case - ample sensing window for multiple conductors
- Designed for UL, CUL and CE approval for use worldwide
Applications include:
- Monitoring Photovoltaic Panels: Detect fault currents before damage can occur
- Water Treatment and Delivery: Detect moisture ingress in submersible pumps
- Heating Processes: De-energize circuits quickly if an element shorts to ground
- Communications Towers: Monitor and notify if a battery-powered supply is allowing current to earth
ABOUT NK TECHNOLOGIES
Founded in 1982, NK Technologies designed the first low-cost solid-state current sensing technology that underlies the industry today.
Today, NK Technologies is a leading provider of current sensing, ground fault detection and power monitoring products to the industrial and factory automation markets, with a product portfolio that includes more than 1300 models to satisfy a wide range of specific application needs. As the needs of these markets change, NK Technologies is well-positioned to respond with sophisticated new product designs and improved product functionality necessary to meet
NK Technologies Introduces New VTU-DIN Series: True RMS AC or DC Voltage Transducer in Space-saving Design
SAN JOSE, CA – NK Technologies introduces the VTU-DIN Series, a high-performance True RMS transducer for sensing voltage in single, three-phase or DC installations. The VTU-DIN measures 0-15 to 0-600 V with an industry standard output proportional to connected voltage in AC circuits with sinusoidal or non-sinusoidal (variable frequency) applications or DC circuits. Standard outputs make the VTU-DIN reliable and easy to use with existing controllers, data loggers and SCADA equipment. It is housed in a space-saving 35-mm wide, easy-to-install DIN rail mounting enclosure.
The VTU-DIN Series features zero to 5-KHz measurement for situations where the power supplied is non-sinusoidal (such as VFD applications), poor quality installations or other electrically harsh or challenging environments. It effectively detects a wide range of conditions that may cause damage to the motor and/or soft starter components (SCRs), including: below normal/brown-out, phase loss and over voltage conditions.
ABOUT NK TECHNOLOGIES
Founded in 1982, NK Technologies designed the first low-cost solid-state current sensing technology that underlies the industry today.
Today, NK Technologies is a leading provider of current sensing, ground fault detection and power monitoring products to the industrial and factory automation markets, with a product portfolio that includes more than 1300 models to satisfy a wide range of specific application needs. As the needs of these markets change, NK Technologies is well-positioned to respond with sophisticated new product designs and improved product functionality necessary to meet those applications.
NK Technologies, 3511 Charter Park Drive, San Jose, CA 95136; 800.959.4014; fax: 408.871.7515 sales@nktechnologies.com; www.nktechnologies.com.
New VTU Voltage Transducer from NK Technologies Measures Circuit Voltages to 1200 Volts with Single Sensor
SAN JOSE, CA – NK Technologies introduces the VTU Voltage Transducer, which can measure AC or DC circuit voltages to 1200 volts with a single sensor. The sensor produces an analog signal directly proportional to the RMS voltage, making it an ideal tool for detecting power generation issues – such brown outs and phase loss – from both conventional and alternative sources. With industry standard output options (4-20mA, 0 – 5 and 0 – 10 VDC), the VTU Voltage Transducer is compatible with most automation and control systems.
NK Technologies’ VTU Series of voltage transducers provide high accuracy and safety in a panel or DIN rail mounted housing. The VTU Voltage Transducer is used to measure voltage in a variety of applications, including pumps and aerators for water delivery and treatment systems, allowing them to be shut down quickly if the supplied voltage falls to a dangerous level. The unit can also monitor voltage of field windings in the DC motors of cranes and heavy-lifting equipment, among many other applications.
ABOUT NK TECHNOLOGIES
Founded in 1982, NK Technologies designed the first low-cost solid-state current sensing technology that underlies the industry today.
Today, NK Technologies is a leading provider of current sensing, ground fault detection and power monitoring products to the industrial and factory automation markets, with a product portfolio that includes more than 1300 models to satisfy a wide range of specific application needs. As the needs of these markets change, NK Technologies is well-positioned to respond with sophisticated new product designs and improved product functionality necessary to meet those applications.
NK Technologies, 3511 Charter Park Drive, San Jose, CA 95136; 800.959.4014; fax: 408.871.7515 sales@nktechnologies.com; www.nktechnologies.com.
NK Technologies Introduces AGLD Fault Sensors: Large LED Display Allows Clear Viewing of Trip Point in Any Light Condition
SAN JOSE, CA – NK Technologies now offers the AGLD Series Ground Fault Sensors to keep machinery and operators safe from accidental shocks. The AGLD’s one-piece, solid-core design allows for installation over wires feeding heavy loads. The output relay will change state at any point between 5 and 100mA or 80 and 950mA. A delay can be set to allow downstream protection to activate before the sensor, keeping the main circuit protection hot and equipment energized while smaller faults are cleared. The large LED display shows the precise trip point and extra delay clearly in any light condition. Applications for the AGLD Series include monitoring of large machines, moisture ingress detection in water delivery and treatment systems, and safety in heating processes.
Key features and benefits of the AGLD Series include:
- Electromechanical relay output provides both normally open and normally closed contacts
- Compatible with most automation and control systems
- Externally powered with a choice of fail safe or standard operation
- Single-turn potentiometer with the setpoint shown on the display for easy adjustment in the field
- Solid-core case with large sensing window provides ample space for multiple conductors
- Simple DIN rail mount for quick installation
ABOUT NK TECHNOLOGIES
Founded in 1982, NK Technologies designed the first low-cost solid-state current sensing technology that underlies the industry today.
Today, NK Technologies is a leading provider of current sensing, ground fault detection and power monitoring products to the industrial and factory automation markets, with a product portfolio that includes more than 1300 models to satisfy a wide range of specific application needs. As the needs of these markets change, NK Technologies is well-positioned to respond with sophisticated new product designs and improved product functionality necessary to meet those applications.
NK Technologies, 3511 Charter Park Drive, San Jose, CA 95136; 800.959.4014; fax: 408.871.7515 sales@nktechnologies.com; www.nktechnologies.com.
NK Technologies Introduces CT-MS 5A Secondary Current Transformer with Split-Core Design and Larger Aperture for Easy Installation
SAN JOSE, CA – NK Technologies has a new addition to its line of 5A Secondary Current Transformers. The CT-MS has 
a split-core design and larger than average sensing window, making it ideal for installing over large wires or bus bars. The CT-MS measures AC current and produces a 0 – 5 amp output proportional to the current flowing through the sensing window.
The CT-MS 5A Secondary CT offers a compact and cost-effective way of measuring primary current. Key features include:
- Compatibility with standard power monitors and panel meters designed for 5-amp input
- Large 2.22” x 1.19” sensing window
- Measures current from 0 – 150 to 0-800 amps
- Plated terminals for reliability
- UR-recognized file E475131
- Meets ANSI/IEEE C57.13 and IEEE C57.13.2
ABOUT NK TECHNOLOGIES
Founded in 1982, NK Technologies designed the first low-cost solid-state current sensing technology that underlies the industry today.
Today, NK Technologies is a leading provider of current sensing, ground fault detection and power monitoring products to the industrial and factory automation markets, with a product portfolio that includes more than 1300 models to satisfy a wide range of specific application needs. As the needs of these markets change, NK Technologies is well-positioned to respond with sophisticated new product designs and improved product functionality necessary to meet those applications.
NK Technologies, 3511 Charter Park Drive, San Jose, CA 95136; 800.959.4014; fax: 408.871.7515 sales@nktechnologies.com; www.nktechnologies.com.
New Easy-to-Install AT/ATR-MS Series Current Transducer From NK Technologies Accurately Monitors Loads Up to 800 Amps
SAN JOSE, CA – NK Technologies introduces the AT/ATR-MS Series AC Current Transducer, combining 
a current sensing element and signal conditioner into a single package. The large, easy-to-install, split-core design allows for installation over existing conductors without the need to disconnect the load, even in applications with multiple conductors per phase. Whether installing over existing conductors or in a new control system, installation is very simple and quick.
AT/ATR-MS Series AC Current Transducer features include:
- Industry Standard Output: 4 – 20 mA signal proportional to the AC current, compatible with most automation systems
- Loop Powered: Use the “live zero” output to verify proper connections where the sensor output is 4 mA with no current through the sensing ring
- Split-core Case: Sensing window provides ample space for bus bar, single or multiple conductors
- Factory Calibrated: Eliminates zero and span potentiometer adjustment
- Meets UL, CUL and CE Approval
The MS Series is ideal for applications such as: monitoring large machines (measures current use to detect over/under current conditions before breakdowns occur); water delivery and treatment (detects open discharge lines and locates clogged filters and blocked intake to pumps); and grinding/shredding (allow for brief periods of drive overload when the processed product varies in density – if the blades hit something foreign the control will alarm or shut down the process.)
ABOUT NK TECHNOLOGIES
Founded in 1982, NK Technologies designed the first low-cost solid-state current sensing technology that underlies the industry today.
Today, NK Technologies is a leading provider of current sensing, ground fault detection and power monitoring products to the industrial and factory automation markets, with a product portfolio that includes more than 1300 models to satisfy a wide range of specific application needs. As the needs of these markets change, NK Technologies is well-positioned to respond with sophisticated new product designs and improved product functionality necessary to meet those applications.
NK Technologies, 3511 Charter Park Drive, San Jose, CA 95136; 800.959.4014; fax: 408.871.7515 sales@nktechnologies.com; www.nktechnologies.com.
New DC Current Transducer Remains Accurate Across Wider Range of Changing Temperatures
Greater simplicity and usability across PLC’s, DAQ’s and power management systems
SAN JOSE, CA – NK Technologies introduces the DT Series DC Current Transducer with ambient 
temperature compensation for increased usability and accuracy. The DT Series improved accuracy is due to a new patent-pending, microprocessor-based method of signal conditioning – sensor output is automatically adjusted as temperature changes (e.g. installers do not need to add algorithms to adjust output as ambient temperature varies), eliminating one of the primary issues with Hall Elements-based products. The added signal conditioning can also eliminate the need to heat/cool the control equipment encloser, reducing considerable expense.
The DT Series DC Current Transducer is ideal for applications such as measuring photovoltaic output in panels producing less than 50 amps or less than 100 amps, as well as monitoring smaller DC motors (used in conveyors and other material positioning equipment) and electrical heaters. Key features include:
- Temperature range: -20°C to +50°C
- 333mVDC, 5 or 10 VDC output proportional to DC current
- 5 VDC or 12 VDC powered
- Monitors circuits of 600 V or lower
- Housed in split-core package so existing wiring remains undisturbed
- “Finger-safe” power supply and output terminals
- Simple two-screw panel mount or DIN-rail brackets
- Safety standards: Designed to UL508,CE standards
NK Technolgies has filed for a patent on the DT Series circuit design, and plans to offer the temperature compensation feature in its other DC current transducers in the future.
ABOUT NK TECHNOLOGIES
Founded in 1982, NK Technologies designed the first low-cost solid-state current sensing technology that underlies the industry today.
Today, NK Technologies is a leading provider of current sensing, ground fault detection and power monitoring products to the industrial and factory automation markets, with a product portfolio that includes more than 1300 models to satisfy a wide range of specific application needs. As the needs of these markets change, NK Technologies is well-positioned to respond with sophisticated new product designs and improved product functionality necessary to meet those applications.
NK Technologies, 3511 Charter Park Drive, San Jose, CA 95136; 800.959.4014; fax: 408.871.7515 sales@nktechnologies.com; www.nktechnologies.com.
AGT Series Ground Fault Indicators from NK Technologies Combine Current Transformer & True RMS Signal in One Package
SAN JOSE, CA – NK Technologies offers a wide range of ground fault indicators, including the AGT Series Ground Fault Indicator. The AGT Series produces an analog 4–20 mA signal proportional to earth or ground fault current. When connected to a controller or data logger, NEC requirements for alarm can be met. Applications include current leakage detection (monitors heating or other loads to detect increases in leakage current) and accurate measurement of very light loads (providing faster response than temperature measurement).
Key features AGT Series features include True RMS Output – remains accurate on distorted waveforms like VFD or SCR outputs; Single Range – eliminates field range selection errors and zero and span pots; and Isolation – magnetically isolates output from the input for safety and eliminates insertion loss.
AGT Ground Fault Indicator Series specifications include:
- Output Signal: 4 – 20 mA, Loop-powered, True RMS
- Output Limit: 23 mA
- Accuracy: 1,0% FS from 10% to 100% of range
- Frequency Range: 40-400 Hz
- Power Supply: 24 VDC Nominal, 12-24 VDC
- Response Time: 600 ms (to 90% step change)
- Standards: UL, CUL 508 Listed
ABOUT NK TECHNOLOGIES
Founded in 1982, NK Technologies designed the first low-cost solid-state current sensing technology that underlies the industry today.
Today, NK Technologies is a leading provider of current sensing, ground fault detection and power monitoring products to the industrial and factory automation markets, with a product portfolio that includes more than 1300 models to satisfy a wide range of specific application needs. As the needs of these markets change, NK Technologies is well-positioned to respond with sophisticated new product designs and improved product functionality necessary to meet those applications.
NK Technologies, 3511 Charter Park Drive, San Jose, CA 95136; 800.959.4014; fax: 408.871.7515 sales@nktechnologies.com; www.nktechnologies.com.
NK Technologies Successfully Completes ISO-9001/ISO-14001 Recertification Audit
NK Technologies announces it has successfully completed an ISO-9001/ISO-14001 recertification audit of its quality assurance and environmental management systems. The systems have been consolidated in order to provide for efficiencies in managing both systems collectively versus separately. The four day audit was performed by SGS, an ANAB accredited independent third party registrar. Previously each management system had been audited independently as the initial ISO-9001 and ISO-14001 registrations were achieved at different points in time, 14 months apart. Ron Rapczynski, NK Technologies Quality Assurance and Environmental Systems Manager says: “The consolidation of both systems has reduced each systems maintenance and operating costs. More importantly however it has increased the effectiveness of each system. This translates to the company continuing to provide the highest quality products while being good stewards of the environment.”
NK Technologies offers an industry leading five year warranty in order to demonstrate the confidence it has in the design and manufacture of its products.
NK Technologies’ ASL Switches Honored as 2013 Design News Golden Mousetrap Finalist
NK Technologies announces that ASL Series AC Current Operated Switches have been selected as a Golden Mousetrap Finalist in the Components, Hardware and Interconnects category for Electronics and Test. The Awards celebrate the companies, products, and people who are energizing North American design, engineering, and manufacturing. The Golden Mousetrap Awards were announced at the Golden Mousetraps Ceremony held February 11, 2014 at the Anaheim Marriott.