KnowledgeBase & Blog | Macromatic Industrial Controls

New 575V AC Three-Phase Monitor Relays

Thursday: November 6, 2014 : Three-Phase Monitor Relays

Macromatic announces an exciting addition to its plug-in series of Three-Phase Monitor Relays. To provide solutions for a greater variety of voltage applications, four new 575V AC Three-Phase Monitor Relays are now available that monitor a voltage range of 460 to 600V AC. This new voltage option is available in the following part numbers: Product Number Protects

Protection on a Corner Grounded Delta System

Wednesday: November 5, 2014 : Three-Phase Monitor Relays

Issue: Can I use a phase monitor for protection on a corner grounded delta system? Answer: Yes, Macromatic phase monitor relays provide the same reliable protection on corner grounded delta systems. A corner grounded delta system is a common way to establish a reference to safety ground when dealing with an otherwise floating output from a

Macromatic Adds 3-D CAD Models

Wednesday: October 8, 2014 : Blog

A comprehensive set of 2-D and 3-D models of Macromatic products are now available for download from the website on the product overview page.

TAA2U and TAD1U Start, Inhibit and Reset Inputs

Friday: August 22, 2014 : Time Delay Relays

The Macromatic TAA2U and TAD1U offer a wide variety of functionality and application versatility by offering START, INHIBIT and RESET inputs. The information below explains the functionality of these 3 circuits. TAA2U TAD1U START INPUT TAA2U Terminal 6 and TAD1U Terminal 3 The START circuit initiates the timing function when connected. There are 2 common ways to use

SSAC Obsoletes Selected ECS Current Sensing Relays

Monday: July 7, 2014 : Blog

As part of their continuing practice to obsolete selected catalog numbers, SSAC has eliminated many products from their ECS Series of encapsulated Current Sensing Relays.

What is True RMS? And Why is it Important in a Phase Monitor?

Monday: April 14, 2014 : Three-Phase Monitor Relays

RMS stands for Root Mean Square. True RMS is a mathematical formula that is used to calculate the effective value of an AC wave shape. To understand why this is important, it is helpful to first discuss what a phase monitor does. A phase monitor measures voltage to confirm the presence of a desired voltage; it

Undervoltage Settings on Universal Voltage Three Phase Monitor Relays

Monday: April 14, 2014 : Three-Phase Monitor Relays

Issue: Your new PMPU three-phase monitor relay can work on any voltage between 190 & 500V. It also includes an adjustable undervoltage trip setting of 80-95% and a fixed overvoltage trip setting of 110%. How do these percentages work depending on where you set the line-line voltage?

Phase Monitor Relays & Different Frequencies

Monday: April 14, 2014 : Three-Phase Monitor Relays

Issue: Do your Phase Monitor Relays work at both 60hz as well as 50hz? What is the tolerance at either value?

Maximum Voltage Ratings of Phase Monitor Relays

Monday: April 14, 2014 : Three-Phase Monitor Relays

Issue: What is the maximum voltage that your phase monitors can handle? What about the units that offer overvoltage protection?

Troubleshooting for a Phase Reversal (Phase Sequence) Problem

Thursday: February 27, 2014 : Three-Phase Monitor Relays

Issue: I have purchased one of your three phase monitor relays and have connected it per the diagram on the unit. However, I cannot get the unit to operate–it just won't turn on. What's wrong? Solution/Resolution: Most problems when first installing and applying a three-phase monitor relay are due to phase sequence issues. Although you