In high or medium voltage systems, relays are the most used devices. Its main objective is to isolate a bad section in just a few cycles, but ensuring minimal disruption to healthy sections. An ideal relay is a unit that acts in anticipation of damage to the imperfect section. The relay connections become contaminated with use, or deteriorated by carbon particles, etc. Therefore, it is advisable for the manufacturer and also the end user to verify the behavior of the relay after a certain period of time.
Over time, relay technology has evolved, and so has relay testing. Various test systems assisted by the latest microprocessor relays have been developed. When it comes to the smallest, lightest and unrivaled relay test equipment, the best tools you need to test your meters and protection relays are provided. The teams are capable of tackling all types of tasks that have previously been performed by large teams.
Today's protection relays offer multiple protection functions that require a new level of refined testing software and hardware, which can fully analyze the operation of the unit in real time. Relay testing and every facet of it can be easily handled with advanced relay testing equipment. Previously, relay test equipment was associated with something heavy and bulky. Under this condition, his transfer to the work camp turns out to be a task only possible for a very strong person. But nowadays, with technological advancement, relay testing equipment is smaller and easier to operate.
The purpose of relay testing, testing and verification, taking into account that relays are discrete devices, unlike integrated circuits; is to provide a low power logic signal to drive a much larger power circuit. The relay helps to isolate the high voltage circuit from the low voltage logic circuit to protect the low voltage circuit. To achieve this, the relay has a small electromagnetic coil to control the logic circuit, and when the coil is energized; results in a high power capacity magnetized switch that activates the high power circuit. The relay that supplies a large amount of current to the headlights of a car is an example of this. During relay control, the low-voltage logic circuit of the car dashboard activates the headlights.
A relay usually has a coil, a set of contacts and a pole. There are two types of contacts in relay testing: normally open and normally closed. Normally Open (N/O) are the set of contacts that are open when the relay is not activated and Normally Closed (N/C) are the set of contacts that are closed when the relay is not activated.
Using relay test equipment requires proper knowledge. Equipment needs understanding about its use. There are many new products for relay testing, each accompanied by its user manual to understand the operation. Modern relay test sets typically incorporate features such as linear amplifiers with switched mode or feedback, protection for open channels, overheating, shorted voltage channels, and internal faults.
They are designed with an intelligent control system that realistically simulates the power system. To avoid damage and for best performance of relay test instruments, it is essential to know the basics of the equipment before using it, making sure to store and transport your test kit correctly, not attempting to force 1800 watts through a 100' 14 AWG extension cord or undersized bench wiring, and being careful of condensation conditions. Likewise, the ventilation openings must be properly cared for, preventing foreign material from entering the test equipment. You should never attempt to connect a current amplifier to an external voltage source, such as a battery or any other source, nor trip the circuit breaker, wind a lock, or connect any significant load to the contact output.
Entering fully into relay testing, testing and verification equipment, Amperis stands out for beginning and extending its marketing with the most modern and sophisticated devices, since they have DSP and FPGA technology integrated with its own patent for high performance of the amplifier technology. In addition, they were the first devices intended for testing relays capable of analyzing all types of relays (current, voltage, frequency, power, impedance, harmonics, distance,...) through advanced GPS trip functions, oscillation, protection frequency. repeat transient with comtrade file and IEC61850 solution (optional).
They have complete self-protection & alarm indicators for incorrect connection, open circuit, short circuit, overload & overheating, etc. All this with a super friendly and intuitive interface valid from inexperienced users to those with more experience.
With Amperis' complete and sophisticated line of relay test equipment, each and every phase of relay testing can be handled effectively. In that sense, Amperis offers the powerful range of relay test equipment that can live off its reputation as a colossus. Amperis Relay Testing equipment includes:.