Three-Phase Monitor Relays

Using smart devices in a connected communication network, with HMI displays, SCADA monitoring and IoT devices, can create a wealth of data for use in the cloud. Products like Macromatic's PC Series empower systems with a rich variety of data including system faults, line voltages, and operating frequency.

New products that embed communication in phase monitor relays can dramatically change the way equipment is monitored and controlled in smart network control systems. These smart devices give users both control and data connectivity in one device for a fraction of the cost of installing a power monitor.

Many industries are using smart devices with embedded communication to improve decision making, simplify troubleshooting, and increase efficiency. Companies that use this new technology can increase their competitive advantages. Embedded communication in devices is the heart of IoT. 

Configuring your computer to access the PC1MDUL web configuration. Refer to directions on PC1MDUL Instruction Sheet 901-0000-346 .

Phase unbalance of a three-phase system exists when one or more of the line-to-line voltages in a three-phase system are mismatched. Line-to-line voltages typically vary by a few volts, but a difference that exceeds 1% can damage motors and equipment. How Can I Protect My Equipment?

Macromatic devices work on many systems. Here are the guidelines and recommended connections for Open Delta, Corner Grounded and High Leg (Red Leg, Wild Leg) Delta systems. Contact Macromatic for technical information on other systems.

What Is Undervoltage? How Can I Protect My Equipment? Undervoltage occurs when the average voltage of a three-phase power system drops below intended levels, and is sometimes referred to as a brown-out. Operating in Undervoltage conditions can drastically reduce the life of the electromechanical equipment and lead to premature failure.

When one phase of a three-phase system is lost, a phase loss occurs. This is also called 'single phasing'. What causes a phase loss? How can this condition be monitored and equipment failure and downtime be prevented?

Macromatic Plug-In Three-Phase Monitor Relays provide protection for motors against premature failure caused by voltage faults. This series of relays retain fault indication and continue to monitor all voltages even with a lost phase.

Calculating the Short Circuit Current Rating for control panels requires establishing the SCCR for each of the individual, relevant power circuit components. What about the Phase Monitor Relay used to measure the circuit voltage?