The Fluke 1732/EUS Three-Phase Electrical Energy Logger makes discovering the sources of electrical energy waste simple. Users can discover when and where energy in their facility is being consumed - from the service entrance to individual circuits.

Profiling energy usage across an entire facility helps users identify opportunities for energy savings, and provides them with the data they need to act on them. The Energy Analyze software package allows users to compare multiple data points over time to build a complete picture of energy usage, which is the first step to reducing energy costs.

Applications

Load studies: Users can discover how much energy individual pieces of equipment are consuming when they are operating at minimum and maximum capacity. They can check the capacity of circuits prior to adding additional loads (various standards exist for this process; in the US the NEC 220-87 is the recommended standard). Load studies can also identify situations where users might exceed the allowable load on a circuit or when an agreed peak demand applies from the utility. For convenience, some load studies simply measure current which makes installation quick and easy. It is often recommended that load surveys be performed for 30 days so that all typical load conditions are encountered during the test.

Energy assessments: Users can quantify energy consumption before and after improvements, in order to justify energy saving devices.

Energy surveys: Users often ask where measurements should be taken for an energy survey - the answer is multiple points within the facility. Users can start at the main service feeders, compare the power and energy measured with the readings from the utility meter (to ensure they are receiving the correct charges). Then the user can move downstream to the larger loads; these should be easy to identify by the current rating of the electrical panels downstream of the service entrances. Measuring at many points will allow a full picture of energy usage to emerge across the facility. The next question users typically have is how long an energy survey should last. This will depend on the facility, but it is recommended that users measure for a period that matches the facility's typical activity period. If the facility operates over a five day work week with down time on the weekend, a seven day survey will most likely capture typical conditions. If the facility operates at a constant level for 24 hours a day, 365 days per year, a single day could be reasonably representative.

Logging related analog measurements: When conducting energy studies, it is useful to log related analog measurements such as temperature, voltage, current or pressure. These variables provide a better overall picture of operating conditions and allow you to correlate asset performance data with energy consumption. Correlating these variables provides more of the data users need to make cost saving performance adjustments.

Power and energy logging: When a piece of equipment is in operation it instantaneously consumes a specific amount of power in watts (W) or kilowatts (kW). This power is accumulated over the operating time and expressed as energy consumed in kilowatt hours (kWh). Energy is what electric utility charges for; there will be a standard charge from the utility per kilowatt hour.

There might also be power factor charges which are based on the effects of the inductive or capacitive loads in the facility. Optimizing peak demand and power factor often results in lower monthly electricity bills. The 1732/EUS can measure and characterize these effects, enabling users to analyze the results and save money.

Simplified load studies: For situations where it is either difficult or impractical to make a voltage connection, the load study feature allows users to perform a simplified load study by measuring current, only. The user can enter the nominal expected voltage to create a simulated power study.

Easy to use

The three current probes are connected separately; the instrument automatically detects and scales the probes. The thin current probes are designed to easily get through tight conductor spacing and are easily set to 150 or 1500 A for high accuracy in nearly any application. An innovative tangle-free flat voltage lead makes connection simple and reliable and the 1732/EUS's intelligent 'Verify Connection'. This feature automatically checks to make sure that the instrument is connected correctly and can digitally correct common connection issues without having to disconnect measurement leads.

The detachable power supply can be conveniently and safely powered directly from the measured circuit—no more searching for power outlets or having to run multiple extension cords to the logging location.

Data downloading could not be easier or more flexible:

• Download directly to USB flash drive that plugs directly into USB port on 1732/EUS instrument
• Integrate energy measurement data along with other plant maintenance data all in one place

Analysis and reporting

Capturing logged data is just one part of the task. Once users have the data they need to create useful information and reports, they can easily be shared and understood by an organization or customers. Fluke Energy Analyze Plus software comes with the 1732/EUS and makes this task as simple as possible. With powerful analysis tools and the ability to create customized reports in minutes, users will be able to communicate their findings and quickly solve problems that optimize system reliability and savings.