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eGauge Systems LLC EG4030 Configuration Manual

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Before continuing, we highly recommend checking out our Getting Started guide at
1 Overview
This guide explains how to configure eGauge so it properly reflects the physical reality of an installation.
There are three sections to this guide: the first is a brief introduction to the web pages used to configure
eGauge, the second is the main section and consists of a list of examples reflecting common installation
scenarios. The third section contains tips on how to fix up installation mistakes through the web configura-
tion rather than having to go out to a site and correct the physical mistake.
Please review the Getting Started guide at http://eGauge.net/start for a short introduction on in-
stalling and configuring the eGauge meter.
eGauge Configuration Guide
(for firmware v4.0 or newer)
eGauge Systems LLC
1644 Conestoga St, Suite 2
Boulder, CO 80301
http://egauge.net/
September 9, 2022
http://egauge.net/start
1

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Summary of Contents for eGauge Systems LLC EG4030

  • Page 1 Configuration Guide (for firmware v4.0 or newer) eGauge Systems LLC 1644 Conestoga St, Suite 2 Boulder, CO 80301 http://egauge.net/ September 9, 2022 Before continuing, we highly recommend checking out our Getting Started guide at http://egauge.net/start 1 Overview This guide explains how to configure eGauge so it properly reflects the physical reality of an installation.
  • Page 2 1 OVERVIEW eGauge Configuration Guide As illustrated in Figure 1, the Installation page has five sections: 1. Potential Transformers (PTs) 2. Sensors 3. Remote Devices 4. Registers 5. Totals and Virtual Registers We describe the purpose of each section in more detail below. After any of the settings have been changed, they need to be saved by clicking on the “Save”...
  • Page 3 1 OVERVIEW eGauge Configuration Guide Figure 1: Example of eGauge Installation-Settings Page September 9, 2022...
  • Page 4 1 OVERVIEW eGauge Configuration Guide 1.1 Potential Transformer (PT) Configuration This section is used to inform the device of any potential-transformers (PTs) that may be installed. Usually, no PTs are installed and the settings here can be left at the default value of “direct (no PT)”. However, if PTs have been installed, the voltages that the device will measure at the L1, L2, or L3 pin will be lower than the actual line-voltage and the appropriate voltage-division ratios need to be selected in this section.

  • Page 5: Sensor Configuration

    1 OVERVIEW eGauge Configuration Guide 1.2 Sensor Configuration This section defines what kind of sensor or current-transformer (CT) is connected to each of the CT posi- tions. Depending on the eGauge model, there are between 12 and 30 inputs. A blank entry indicates that no CT or sensor is configured.
  • Page 6 1 OVERVIEW eGauge Configuration Guide MFG code Manufactuer J&D Continental Control Systems Magnelab AccuEnergy CR Magnetics Table 2: CT manufacturer code description MODEL Description Split-core CT JRFS Rogowski coil (rope CT) High accuracy split-core CT Split-core CT Rogowski coil (rope CT) Solid-core DC CT Split-core DC CT Table 3: CT model description...
  • Page 7 1 OVERVIEW eGauge Configuration Guide lower amperage-rated value. For example, enabling high-gain mode with a 100A CT will change the drop- down option to indicate a 10A CT. Likewise, a CT configured for 75A will appear as a 7.5A CT. 1.2.5 Rope CTs (Rogowski Coils) Self-powered rope CTs are wired directly to the eGauge with a green 2-pin power plug.
  • Page 8 1 OVERVIEW eGauge Configuration Guide • Remote device not reachable. Verify that the remote device can be reached from the eGauge. If the remote device is another eGauge, and both are using HomePlug, you can use the Settings HomePlug screen to verify that the remote device can be reached with good signal strength. For additional information on why it failed, you may click the info button (“i”...
  • Page 9 1 OVERVIEW eGauge Configuration Guide The entries in this popup-menu have the following meaning: P: Records the power calculated from one or more current/voltage-pairs. L: From a Line voltage input, records either normal value (AC), DC-only (mean) value, or frequency of the chosen Line input. S: From a Sensor input, records either normal value (AC), DC-only (mean) value, or frequency of the chosen Sensor input.
  • Page 10 1 OVERVIEW eGauge Configuration Guide Power Subtypes The subtypes to record for a power register are selected by clicking on the subtype- selector button to the right of the register-type button. This will pop up the dialog shown below: As shown here, there are five subtypes which can be recorded by turning on the corresponding checkbox: = (net): Checking this box ensures that the net flow of power is available as a register-value.
  • Page 11 1 OVERVIEW eGauge Configuration Guide calculate total power usage at a site with a photo-voltaic (PV) solar system. It can also be used to accurately track energy-flow of a utility meter, which can be helpful for cases where a utility charges a different rate for consumed power than it pays for power fed back into the grid.
  • Page 12 1 OVERVIEW eGauge Configuration Guide In this example, we named the register “Main Power Factor” and selected the equal-sign (formula- register) as the register type (see Section 1.4.2). Next, we selected the type of physical quantity that is being recorded by the register. As described in more detail in Appendix B, various choices are available here: power, voltage, irradiance, and so on.
  • Page 13 1 OVERVIEW eGauge Configuration Guide • You might wonder what would happen if a formula attempted to use the value of another formula register. The answer is that this is an undefined operation. It could return the current value of that register, the previous second’s value of the register, or any other value.
  • Page 14 1 OVERVIEW eGauge Configuration Guide Each power register will show up in several variations in the menu, namely with one variant for each available subtype. If you look back at the register configuration for Main Service, only the net (=) subtype is being recorded, so it shows up only once as Main Service (since net metering is the default for eGauge, the equal-sign is omitted from the name, unlike for any other subtype).
  • Page 15 1 OVERVIEW eGauge Configuration Guide With this setup, selecting view A in the dash-board will display register Mech Room Panel as the total site usage and nothing (zero) as the total site generation. That is, within a view, the register-names Usage and Generation serve as the totals for that view.

  • Page 16: Configuration Examples

    2 CONFIGURATION EXAMPLES eGauge Configuration Guide 2 Configuration Examples The following pages illustrate various common installation scenarios and matching configurations. • Pay attention to phasing: CTs must be configured for the correct phase they are on. E.g., if a breaker feeding the eGauge L1 is black, CTs around the any black phase must be applied to L1.
  • Page 17 2 CONFIGURATION EXAMPLES eGauge Configuration Guide 2.1 Standard Split-Phase back-fed Basic installation measuring power coming from a power utility (grid) and from a single-phase solar-system inverter. Registers Grid [P] [= ] S1 * L1 + S2 * L2 Solar [P] [=+] S3 * L1 + -S3 * L2 Totals and Virtual Registers Usage Grid + Solar+...
  • Page 18 2 CONFIGURATION EXAMPLES eGauge Configuration Guide 2.2 Direct-Feed Solar Same as Standard Split-Phase installation, except that the inverter feeds directly into the power utility’s grid. That is, the Solar CT is closer to the utility than the Grid CTs. This situation often arises when solar power is delivered via a line-side tap.
  • Page 19 2 CONFIGURATION EXAMPLES eGauge Configuration Guide 2.3 Three-Phase 120/208 or 277/480 Wye w/ single-phase inverter Standard three-phase installation measuring power coming from a power utility (grid) and from a single- phase solar-system inverter. The color coding shows 120/208V, but applies to 277/480V as well. This diagram is for a Wye system with a neutral.
  • Page 20 2.4 Submetering single-phase units on a 120/208V service The EG4xxx series meters are capable of monitoring up to 7 single-phase units (EG4015) or 15 single- phase units (EG4030) with a single meter. Single-phase units require 2 CTs each, one for each phase. Registers...
  • Page 21 2 CONFIGURATION EXAMPLES eGauge Configuration Guide 2.5 Three-Phase High-leg Delta Three-phase high-leg delta installation measuring power coming from a power utility (grid). Registers Grid [P] [= ] S1 * L1 + S2 * L2 + S3 * L3 Totals and Virtual Registers Usage Grid Notes:...
  • Page 22 2 CONFIGURATION EXAMPLES eGauge Configuration Guide 2.6 Three-phase 347/600V Wye Three-phase 347/600V Wye installation measuring power coming from a power utility (grid). Registers Grid [P] [= ] S1 * S4 + S2 * S5 + S3 * S6 Totals and Virtual Registers Usage Grid Notes:...
  • Page 23 2 CONFIGURATION EXAMPLES eGauge Configuration Guide 2.7 Three-Phase High-leg Delta Three-phase high-leg delta installation measuring power coming from a power utility (grid). Registers Grid [P] [= ] S1 * L1 + S2 * L2 + S3 * L3 Totals and Virtual Registers Usage Grid Notes:...
  • Page 24 2 CONFIGURATION EXAMPLES eGauge Configuration Guide 2.8 Three-phase 347/600V Wye Three-phase 347/600V Wye installation measuring power coming from a power utility (grid). Registers Grid [P] [= ] S1 * S4 + S2 * S5 + S3 * S6 Totals and Virtual Registers Usage Grid Notes:...
  • Page 25 2 CONFIGURATION EXAMPLES eGauge Configuration Guide 2.9 Three-Phase Delta Three-phase delta installation measuring power coming from a power utility (grid). The color diagram below shows a 208V delta, but this also applies to a 120V delta or 240V delta. Registers Grid [P] [= ] S1 * L1 + S2 * L2 Totals and Virtual Registers...
  • Page 26 2 CONFIGURATION EXAMPLES eGauge Configuration Guide 2.10 Three-Phase Delta 480V High-voltage (480V) three-phase delta installation measuring power coming from a power utility (grid). This same method may applies to a 600V delta. Registers Grid [P] [= ] S1 * S4 + S2 * S5 Totals and Virtual Registers Usage Grid...
  • Page 27 eGauge Configuration Guide 2 CONFIGURATION EXAMPLES 2.11 Subpanels This example illustrates how to measure subpanels. Registers Subpanel 1 [P] [= ] S1 * L1 + S2 * L2 Subpanel 2 [P] [= ] S3 * L1 + S4 * L2 Totals and Virtual Registers Usage + Subpanel 1 + Subpanel 2...
  • Page 28 2 CONFIGURATION EXAMPLES eGauge Configuration Guide 2.12 Appliances This example illustrates how to configure 120Vac (single pole) and 240Vac (two pole) appliances. Registers Grid [P] [= ] S1 * L1 + S2 * L2 Fridge [P] [= ] S3 * L1 Oven [P] [= ] S4 * L1 + -S4 * L2 Totals and Virtual Registers...

  • Page 29: Troubleshooting

    3 TROUBLESHOOTING eGauge Configuration Guide 3 Troubleshooting If an installation does not work as expected, we recommend using the channel checker tool to troubleshoot the problem. This tool is available through “Tools” link in the top right menu of the eGauge web pages then click on “Channel Checker”...
  • Page 30 3 TROUBLESHOOTING eGauge Configuration Guide In addition to the currents and voltages, the page also reports power figure for each component of all registers. The power figure is accompanied by a power-factor, which is a value between 0 and 1. A value of 1 indicates a purely resistive load whereas a value of 0 indicates either a purely inductive or purely capacitive load.
  • Page 31 A FORMULA OPERATORS AND FUNCTIONS eGauge Configuration Guide A Formula Operators and Functions The following operators are available in register formulas (in decreasing order of precedence): Operator: Precedence: Description: $”r ” The value of register r. The value of parenthesized sub-expression e. The negative of e.
  • Page 32 A FORMULA OPERATORS AND FUNCTIONS eGauge Configuration Guide The following table describes the list of functions that are available in formula registers using up-to-date firmware. Please refer to the function documentation on your specific device for the most up-to-date listing of available functions and full descriptions.
  • Page 33 B PHYSICAL UNIT eGauge Configuration Guide B Physical Unit The table below lists the various physical units supported by eGauge. In this table, column Name lists the name as it appears in the Web configuration interface (see Section 1.4.4). Column Records shows the physical quantity the register records and column Unit shows the physical unit that the data is being recorded with.
  • Page 34 B PHYSICAL UNIT eGauge Configuration Guide Note: Monetary registers do not have a pre-defined unit. Instead, such values are displayed using the currency-symbol selected via one of the preference settings, for example $. The res- olution for this type is very fine because the cost of electricity per second is generally extremely low.

This manual is also suitable for:

Eg4015