NETA Certification: When "Qualified" Isn't Certified Today, virtually every electrical testing company has a website. Most of them make some reference to NETA (InterNational Electrical Testing Association), the professional organization that establishes industry standards for electrical testing companies. But what many of these companies can't do, unlike Reuter Hanney, is…

Generator Rental - Better Too Soon Than Too Late A generator rental can help maintain power distribution when you need to respond to a natural disaster.  If you wait until you really need it, it can be far too late. The power grid we take for granted most days is…

Electrical Safety Equipment Hazards - Company Equipment Required! Establish a protocol for safe work practices and electrical safety management requirements. Employees must use approved electrical safety equipment that meets or exceeds recognized industry standards. Three reasons employees should not use their own electrical safety equipment: 1- No control over when…

Testing electromechanical relays involves the following steps: • An inspection of the relay for loose screws, friction in moving parts, iron filings between induction discs and permanent magnets, and any evidence of damage to the relay. • Correct settings should be applied or verified. • Pickup Test: measures the point…

Technician Tips In order to test relays, the technician should: • Understand the construction, operation, and testing of the particular relay • Have the manufacturer’s instruction manual available • Be given the settings to be applied to the relay and test points • Have a test instrument available that is…

Three Protective Relays Types are: • Electromechanical • Solid state • Numerical Protective relays should be acceptance tested prior to being placed in service. Thereafter, they should be tested periodically to ensure reliable performance.  In normal industrial applications, relays should be tested at least every 2 years. In critical systems,…

Protective relays are designed to respond to electrical systems anomalies in: • Current • Voltage • Frequency • Phase angle • Direction of current or power flow • And other parameters Protective relays should be acceptance tested prior to being placed in service. Thereafter, they should be tested periodically to…

Most medium-voltage circuit breakers have a protective relay to monitor the electrical system. Protective relays are used in conjunction with medium voltage circuit breakers to: Sense abnormalities Isolate the problem with minimal disturbance to the system Minimize the damage to the faulted equipment. Protective relays should be acceptance tested prior to…