Question: What is the difference between “UL Listed” & “UL Component Recognized”? Answer: We are often asked several questions regarding our plug-in products & UL certifications: Why are some products…
Intrinsically Safe devices are not yet required to meet UL 913 8th Edition. So why does certification to the more stringent 8th Edition matter? Increased safety can reduce the risk…
Short Circuit Current Rating (SCCR) of Three-Phase Monitor Relays Since the 2005 edition, the NFPA70: National Electrical Code (NEC) requires that industrial control panels must be marked with an appropriate short…
Designing Intrinsically Safe Circuits When designing Intrinsically Safe Circuits, it is imperative to understand the entity parameters of the devices in your circuit. The entity parameters describe characteristics of the…
Issue: How do I make connections to my Alternating Relay? Solution/Resolution: Macromatic offers several versions of Duplex Alternating Relays. The following examples are typically the way connections are made to…
Intrinsic Safety Overview When installing electrical equipment in or near hazardous area locations, specific circuit design principles must be followed in order to prevent an explosion. Depending on the region…
Question: What is Phase Loss? How can I protect my Equipment? Answer: When one phase of a three-phase system is lost, a phase loss occurs. This is also called 'single…
Question: What Is Undervoltage? How Can I Protect My Equipment? Answer: Undervoltage occurs when the average voltage of a three-phase power system drops below intended levels, and is sometimes referred…
Question: What type of power systems can Macromatic Three-Phase Monitor Relays protect? Answer: Macromatic devices work on many systems. Here are the descriptions, recommended connections and guidelines for Corner Grounded, Open Delta and High…
Question: What Is Phase Unbalance? How Can I Protect My Equipment? Answer: Phase unbalance of a three-phase system exists when one or more of the line-to-line voltages in a three-phase…
Eliminate the PLC and Save with Macromatic ATP Series Relays Macromatic Triplexor Relays save panel space, reduce labor, with no programming.Macromatic. Specific-purpose ATP Series relays are ready to go…
Refer to directions on PC1MDUL Instruction Sheet Please ensure that you have completed directions on the PC1MDUL Instruction Sheet 901-0000-346 located under heading “Ethernet Configuration Using Web Browser” prior to the steps…
The Impact of IoT Technology Search Google for “Internet of Things” (IoT) and you will find about 5 billion articles listed. There are over 8 million listings for news about…
Protecting Critical Equipment from Voltage Faults New products that embed communication in phase monitor relays can dramatically change the way equipment is monitored and controlled in smart network control systems.…
Issue: I am using a time delay relay with a triggered function. My trigger switch will be closed before I apply voltage to the time delay relay. Will this work?…
Issue: Do your Alternating Relays work on DC voltages? Your catalog used to only mention AC and the products were only marked as AC. Solution/Resolution: Until early 2017, our ARP…
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