The Z-Brick, the newly introduced Line-to-Line Impedance Test option for the EPA1000 & EPA2000 - accurately monitors a site before equipment is installed!

Now it is possible to measure both the power quality and the line impedance of a circuit. The goal of this new measurement is to find out what the total line impedance (phase-to-phase) of the circuit is feeding the equipment. The circuit would typically consist of a transformer, a circuit breaker, wire, connectors and any loads.

Z-Brick simulates a pulsed load (X-Ray, CT, MRI, etc.) being added to the customer’s existing feeder and determines if the line can handle this new load (before the system is event delivered)!

This new option is the most accurate method to test a line prior to the installation of the equipment. It also is good for trouble shooting in order to determine if the line’s impedance is contributing to the problem as well as aiding in the selection of the correct type of power treatment.

How it Works:

• The Z-Brick is connected between the circuit where the load will be added (if not already installed) and the EPA.
• The EPA controls the Z-Brick and stores all of the data from the test in the EPA’s memory.
• The Z-Brick adds a known three-phase load to the circuit and measures the nominal RMS voltages before, during, and after the load is added.
• A contactor is energized and the resistive load is engaged causing a voltage drop on the circuit under evaluation.
• The voltage is measured and the line’s impedance is then calculated and recorded on the EPA.

We recommend that you press the Z-Brick’s Test button 4 to 5 times in order to assure the most accurate test data.

The entire test takes about ten minutes (including installation).

For Help & Support:

Z-Brick Data Sheet

Z-Brick EPA 1000 Installation Instructions

Z-Brick EPA 2000 Installation Instructions