Solar Panels
Photovoltaic arrays are used primarily in two ways to:
- Charge batteries that are used to power remote loads where installing a connection to the utility grid would be cost prohibitive
- Energize installations where the DC power is converted to 60 HZ AC power through a solid-state inverter
NK Technologies’ DC Current Transducers can be installed so the output of the arrays can be monitored. These transducers are available in bipolar versions so that current may be measured during charging or discharging of the batteries.
Additionally NK Technologies’ Power Transducers can be installed to monitor the voltage, current and frequency output from the inverter.
Equipment Ground Fault Monitoring
As we become more aware of occupational health and safety so the need for 
protection against ground faults is growing. Industrial electrical equipment is fed via a distribution system which in turn is connected to a main feed. Ground fault protection may be installed, for instance at a main breaker, protecting the branch circuit but not necessarily a valuable or critical piece of equipment. Industrial Ground Fault Sensors from NK Technologies are designed to be installed in individual pieces of equipment or their electrical feed. The sensors provide an on/off output that may be used to operate a circuit interruption device like a shunt trip breaker or feed into an alarm system. With over 100 models to choose from, there’s sure to be one to fit your application.
Insulation Breakdown
Industrial electrical heaters are prone to ground leakage due to the breakdown or
contamination of insulators. The use of NK Technologies’ Ground Fault Sensors enables early detection of leakage Currents as small as 5mA. The on/off output of the sensor can be used to trigger a circuit interruption device (for example a shunt-trip breaker) or a monitoring device like a PLC to determine the required action. Latching and auto-reset models are available in both normally energized and normally de-energized configurations suitable for most applications.