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Electro Industries Nexus 1262 Installation & Operation Manual

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"The Leader in Power Monitoring and Control"
"The Leader in Power Monitoring and Control"

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  • Page 1 “The Leader in Power Monitoring and Control” “The Leader in Power Monitoring and Control”...
  • Page 3 Nexus ® 1262 / 1272 High Performance Socket and Switchboard Meters Installation & Operation Manual Version 1.10 August 5, 2008 Doc #: E151701 V1.10 Electro Industries/GaugeTech 1800 Shames Drive Westbury, New York 11590 Tel: 516-334-0870 Fax: 516-338-4741 Sales@electroind.com www.electroind.com “The Leader in Power Monitoring and Control”...
  • Page 4 Doc # E151701 Electro Industries/GaugeTech...
  • Page 5 Electro Industries/GaugeTech. © 2008 Electro Industries/GaugeTech Nexus® is a registered trademark of Electro Industries/Gauge Tech. Printed in the United States of America. Doc # E151701 Electro Industries/GaugeTech...
  • Page 6 516-334-0870 or fax 516-338-4741. Product Warranty Electro Industries/GaugeTech warrants all products to be free from defects in material and workmanship for a period of four years from the date of shipment. During the warranty period, we will, at our option, either repair or replace any product that proves to be defective.
  • Page 7 About Electro Industries/GaugeTech History Founded in 1973 by engineer and inventor Dr. Samuel Kagan, Electro Industries/GaugeTech changed the face of power monitoring forever with its first breakthrough innovation: an affordable, easy-to-use AC power meter. A few of our many Technology Firsts include:...
  • Page 8 Electro Industries/GaugeTech Doc # E151701...

  • Page 9: Table Of Contents

    4.1: Testing Tools ....... 4-1 4.1.1: Test Pulse LED ......4-1 Electro Industries/GaugeTech Doc # E151701...
  • Page 10 6.2.2: Battery Safety and Disposal ......6-6 6.3: Mounting the Optional Nexus® P40N, P41N or P43N LED External Display . . . 6-7 Electro Industries/GaugeTech Doc # E151701...
  • Page 11 ......10-7 10.5.2: Normal Mode ......10-8 Doc # E151701 Electro Industries/GaugeTech...
  • Page 12 ......14-7 14.8: Performance Notes ......14-8 viii Doc # E151701 Electro Industries/GaugeTech...
  • Page 13 Figure 5.4: 1262/1272 2-Wire RS-485 Port Detail ....5-4 Figure 5.5: RS485 Daisy Chain Connection ..... . 5-5 Electro Industries/GaugeTech Doc # E151701...
  • Page 14 ....10-4 Figure 10.6: Multiple Output Modules ..... . . 10-5 Electro Industries/GaugeTech Doc # E151701...
  • Page 15 Figure 12.18: Form 36Z 2.5 Element Wye, 2 PTs, 3 CTs ....12-17 Chapter 14: Flicker Figure 14.1: Simulation of Eye Brain Response ....14-3 Electro Industries/GaugeTech Doc # E151701...
  • Page 16 ....C-7 Table C.3: Typical Power Quality Problems and Sources ....C-13 Electro Industries/GaugeTech Doc # E151701...

  • Page 17: Quick Start Guide For Nexus® Type S Meters

    Full Scale value in the Limit and Waveform Full Scales settings and will effect all other settings. NOTE: Make sure settings are correct for installation site. Fig. Q.6: CT & PT Settings Doc # E151701 Electro Industries/Gauge Tech...
  • Page 18 1262/1272 Power Meter. This guide does not purport to cover all details or variations in equipment. All work should be done by appropriate qualified personnel. For details, refer to later chapters & Communicator EXT User Manual. Electro Industries/Gauge Tech Doc # E151701...

  • Page 19: Chapter 1: Quick Start Up For Nexus® S Type Meters

    This completes a Common 95% test of meter functionality. Fig 1.3: Form 9S & 36S Aux Terminals Fig 1.4: Form 45S Aux Terminals Electro Industries/Gauge Tech Doc # E151701...

  • Page 20: Pc To Nexus® Meter Serial Communications

    Use Communicator EXT's Quick Connect (or Connect) function to set up the Communication link. The Command is: Connection > Quick Connect (or Connect). Ethernet Connection: Connect with Network, Modbus TCP, 57600. Modem: Connection Manager, Modbus ASCII, 57600. The Device Status Screen appears when the connection is complete. Electro Industries/Gauge Tech Doc # E151701...

  • Page 21: Configure Programmable Settings

    If you are using Block Demand, Transformer Loss Compensation, other than 15 minute demand or Load Profile Recording (Trending) the default values should be changed. NOTE: Be sure to set the CT and VT ratios to values that are correct for the installation site. Electro Industries/Gauge Tech Doc # E151701...
  • Page 22 See Chapter 4 of the Communicator EXT User Manual for details. When settings are complete, click OK to return to the Communications Settings screen. Click OK to return to the Main screen. Electro Industries/Gauge Tech Doc # E151701...
  • Page 23 Waveform - CBEMA Profile • Triggers for waveforms are set here based on a percentage of Full Scales (set on the Limit & Waveform Full Scales screen). Set Sampling Rate and Total Captures. Click OK. Electro Industries/Gauge Tech Doc # E151701...

  • Page 24: 1: Save The New Program

    You now have a tested meter with a program for the site where it will be installed. Meter installation is like any other meter of that Form. See Chapter 11 of this manual for Wiring Diagrams. Electro Industries/Gauge Tech Doc # E151701...

  • Page 25: The Nexus® 1262/1272 Multiparameter Power Meter

    The use of two A/D converters ensures that both signals have maximum resolution, accuracy and integrity. The second also isolates energy sampling and calculations from the waveform fault recording requirements. This provides both advanced energy and advanced waveform analysis. Electro Industries/GaugeTech Doc # E151701...

  • Page 26: Figure 2.2: How The Nexus 1272 Meter Processes Inputs

    Ethernet/Modem Combo Card.. External systems can be connected to either of the RS485 ports or the Ethernet/Modem port. Stored data can be downloaded through the RS485 ports, the Ethernet/Modem port or the IR port. Electro Industries/GaugeTech Doc # E151701...

  • Page 27: Figure 2.3: How The Nexus 1262 Meter Processes Inputs

    Ethernet/Modem Combo Card (separate connections that can be used simultaneously). External sys- tems can be connected to either of the RS485 ports or the Ethernet/Modem port. Stored data can be downloaded through the RS485 ports, the Ethernet/Modem port or the IR port. Electro Industries/GaugeTech Doc # E151701...

  • Page 28: Advanced Measurement Functionality

    • kW Demand, Delivered & Received, Max/Min • kVAR Demand, Delivered & Received, Max/Min • kVAR Coincident with kW Demand • kVA Demand, Max/Min • Amps Demand, Max/Min • Voltage Demand Max/Min Electro Industries/GaugeTech Doc # E151701...

  • Page 29: 2: Advanced Communications And I/O Capabilities

    The user can select from the following optional Output Modules for enhanced capability. • Analog Outputs • KYZ Outputs • Relay/ Alarm Outputs Control Options • ElectroLogic provides user-definable control outputs. • Action and/or alarm on Abnormal Condition. • Action on Boolean Logic Combinations. Electro Industries/GaugeTech Doc # E151701...

  • Page 30: 3: En50160 Flicker

    The Nexus® 1262/1272 Socket Meter features a back-lit LCD display built into the face of the meter. In addition, Electro Industries offers four optional external displays, each powered by a power supply (such as the PSIO). The P40N, P41N and P43N are LED displays which provide easy-to-use access to information stored in the meter when an additional display is required for remote access.

  • Page 31: Nexus® 1262/1272 Meter Forms

    2 1/2E Wye 2 1/2E Wye or 4W Delta NOTE: See Section 2.5 for Rated Voltages. Nexus® 1262/1272 Meter Accuracy Value Accuracy Voltage 0.02% Current 0.05% Frequency 0.001Hz 0.06% kWh@1.0PF 0.06% kWh@0.5PF 0.10% kVAR 0.10% 0.10% 0.10% Electro Industries/GaugeTech Doc # E151701...

  • Page 32: Nexus® 1262/1272 Meter Specifications Overview

    Data Speeds of up to 115k bps. Optional Communications • INP2: Internal Modem with data buffering for faster downloads and noise rejection.Connect speeds of 300 to 56k bps. • INP200: Internal 10Mbit Ethernet. • INP202: Ethernet (INP200) / Modem (INP2) Combination Electro Industries/GaugeTech Doc # E151701...
  • Page 33 Panasonic BR2032 3V Lithium Battery (or equivalent) maintains NVRAM and time during outages. Modem Battery • 3V Lithium Battery with custom leads and velcro mounting maintains Dial-Back Feature during outages. Call factory for replacement battery. Electro Industries/GaugeTech Doc # E151701...

  • Page 34: Nexus® 1262/1272 Meter Logging Specifications

    Freeze with Time Commands enable the Nexus® meter to have internal time-driven Frozen and Frozen Event data. When the meter receives the Time and Interval, the data will be created. For complete details, download the appropriate DNP User Manual from our website www.electroind.com. Electro Industries/GaugeTech Doc # E151701 2-10...

  • Page 35: Nameplate Information

    Test Amperes 2. Voltage Transformer Ratio (or PT Ratio) Watt-hour test constant 3. Current Transformer Ratio (see Glossary) 8. ANSI C12.20 Form Number 4. Primary Watt-hour constant 9. ANSI C12.20 Accuracy Class 5. Current class Electro Industries/GaugeTech Doc # E151701...
  • Page 36 • EIG Number: Model Number plus Option Numbers: (Example below) Model - Memory - Form - Freq - Power Supply - Outputs - Communication 1272 - - 9S - 60Hz - - 4PO1 - INP200 Electro Industries/GaugeTech Doc # E151701...

  • Page 37: Basic Operations

    “ACB” indicates reversed phase sequence. It will blink A, B or C if one phase is not present. If all phases are not present, the meter will turn off (unless you have an Aux pigtail connected to a power source). Electro Industries/GaugeTech Doc # E151701...

  • Page 38: Display Information

    The Backlight cannot be set to stay on indefinitely. It will turn off after the amount of time selected. One hour is the maximum setting. If the backlight has timed out and is off, you need to hit the Mode Switch once to turn on the backlight and redirect the screen automatically. Electro Industries/GaugeTech Doc # E151701...
  • Page 39 3.4: Nexus® 1262/1272 Meter Programmable Display Navigation Map Doc # E151701 Electro Industries/GaugeTech...

  • Page 40: Programmable Display Overview

    The Programmable Display can be edited through Communicator EXT even if the meter is not connected to the computer. Refer to the next section (Section 3.6) for instructions. See the Communicator EXT User Manual for additional details on programming and polling the Nexus® 1262/1272 meter. Doc # E151701 Electro Industries/GaugeTech...

  • Page 41: Programmable Display Setup

    0 - 3 (Primary Power) Display Leading Zeroes: check if desired. Energy Display: Select the Multiply by Constant value. Check Apply to the Demand Registers as Well if desired. A Preview appears at the bottom of the screen. Doc # E151701 Electro Industries/GaugeTech...
  • Page 42 9. When you have finished making any changes, click Update Display to send the new settings to the display. Pop-up windows will tell you that the changes have been made and you will return to the Communicator EXT Main screen. Doc # E151701 Electro Industries/GaugeTech...

  • Page 43: Programmable Display Screens

    Block W Demand Rec W Demand Last Reset Phase to Neutral Voltage Phase Current Phasors VAR, PF, Frequency Va, Vab Harmonics Vb, Vbc Harmonics Vc/Vca Harmonics Ia Harmonics Ib Harmonics Ic Harmonics Totalizer 1 Totalizer 2 Totalizer 3 Doc # E151701 Electro Industries/GaugeTech...
  • Page 44 TOU VARh, Q2 (Modifier 5) TOU VAh, Q3 (Modifier 5) TOU VARh, Q3 (Modifier 5) TOU W Demand, Rec (Modifier 5) TOU W Demand, Del (Modifier 5) TOU + VAR Demand (Modifier 5) TOU-VAR Demand (Modifier 5) Doc # E151701 Electro Industries/GaugeTech 3-10...

  • Page 45: Testing Tools

    Watt Demand pulses. Each calibration pulse is equal to the value assigned to Kt (Watthours per pulse) in the meter’s Device Profile. The millisecond duration of each output pulse is also programmable in the meter’s Device Profile. Doc # E151701 Electro Industries/GaugeTech...

  • Page 46: 2: Lcd Display

    To enter Test Mode, you must pass the meter’s security system. In most instances, this requires you to remove power from the meter, break the meter seal and remove the Lexan cover, and then repower the meter. Doc # E151701 Electro Industries/GaugeTech...
  • Page 47 1. All energy, demand and TOU values are stored in the meter’s nonvolatile memory. 2. Meter log recording is suspended, except for historical logging, which continues. Entries to the historical logs during testing, will reflect that Test Mode was in effect. Doc # E151701 Electro Industries/GaugeTech...

  • Page 48: 2: Using Test Mode

    Reset Button while in Test Mode. A Test Mode Reset causes all test quantities to be reset to zero and a new block interval to be started. The item displayed when the reset occured remains in the display but the value will be initialized. Doc # E151701 Electro Industries/GaugeTech...

  • Page 49: 3: Test Mode Preset Accumulators

    • Click Tabs at the top of the screens to access the individual screens. • Each screen has a Current Value, New Value and Preset Box for each accumulator. • A new meter has zeros for Current Values. Doc # E151701 Electro Industries/GaugeTech...

  • Page 50: 4: Exiting Test Mode

    If the meter does not recognize measureable load: The meter watches for user interaction by monitoring activity on the Test Button and the Reset Button. If neither button is pushed within the programmed Exit Delay time, the meter Doc # E151701 Electro Industries/GaugeTech...
  • Page 51 Upon exiting Test Mode, accumulation of billing and historical log quantities: 1. Resume from the values in place when Test Mode was entered, or 2. Continue from the Test Mode Preset values (see Section 4.2.4). Doc # E151701 Electro Industries/GaugeTech...
  • Page 52 Doc # E151701 Electro Industries/GaugeTech...

  • Page 53: Communication Overview

    RS232 RS485/232 Meter RS485 Converter 4000 Feet 50 Feet (Unicom 2500) Telephone Line, MODEM Fiber Optic Link or RS232 RS485 RS485/232 Converter Meter Radio Link (Modem Manager) 4000 Feet 50 Feet Figure 5.1: Communication Overview Electro Industries/GaugeTech Doc # E151701...

  • Page 54: Figure 5.2: Nexus® 1272 Meter Optical Port

    The A7Z requires no power supply. All power is received from the host computer serial port using transmitteer and receiver circuits within the probe. The RS232 standard limits the cable length to 50 feet (15.2m). Electro Industries/Gauge Tech Doc # E151701...

  • Page 55: Rs485 Serial Communication

    Two-wire, RS485 communication terminals: Connect the A(+) terminal of the Meter A(+)/B(-) Port to the (+) terminal of the device. Connect the B(-) terminal of the Meter Port to the (-) terminal of the device. Electro Industries/Gauge Tech Doc # E151701...

  • Page 56: Figure 5.4: 1262/1272 2-Wire Rs485 Port Detail

    For an RS485 Daisy Chain connection, in which you link multiple devices in a series, connect shield to RS485 Master and individual devices as shown in Figure 5.5. You may also connect the shield to earth-ground at one point. Electro Industries/Gauge Tech Doc # E151701...

  • Page 57: Figure 5.5: Rs485 Daisy Chain Connection

    Figure 5.5 shows a representation of an RS485 Daisy Chain connection. RS485 Master Last Slave Up to 31 Slaves Figure 5.5: RS485 Daisy Chain Connection Electro Industries/Gauge Tech Doc # E151701...

  • Page 58: Figure 5.6: Incorrect "T" And "Star" Topologies

    Incorrect Connection: “Star” “Star” Connection Incorrect! The three wires connected in a “Star” shape on both the (+) and (-) terminals will cause interference problems. RS485 Ports Figure 5.6: Incorrect “T” and “Star” Topologies Electro Industries/Gauge Tech Doc # E151701...

  • Page 59: 2: Using The Unicom 2500

    As shown in Figure 5.8, you connect the "RX-" and "TX-" terminals with a jumper wire to make the "-" terminal, and connect the "RX+" and "TX+" terminals with a jumper wire to make the "+" terminal Doc #: E151701 Electro Industries/GaugeTech...

  • Page 60: 3: Rs485 Connection-Meter To A Computer Or Plc

    Some of the fixed parameters for the Ethernet/Modem are: 8 Data Bits, Even Parity, 1 Stop Bit. The Ethernet/Modem’s Gateway’s Baud Rate and Delay Time are configurable. For more information on a meter with the INP202 Modem/Ethernet Combo Card, see Section 5.6. Electro Industries/Gauge Tech Doc # E151701...

  • Page 61: 7: Rs485 Connection-Meter To The P40N, P41N Or P43N Led Display

    See R T Note on page 5-5.. Please refer to Cable Color Key, page 6-4, and second bullet, page 5-5. 1262/1272 Port 4 Figure 5.9: Meter Connected to P40N, P41N or P43N LED External Display Electro Industries/Gauge Tech Doc # E151701...

  • Page 62: 8: Rs485 Connection- Meter To The P60N Touch Screen External Display

    Display Port Factory Test Connector Bottom P60N Touch Screen Connection Key Meter 5 DCIN (12-30V dc ) 4 (GND) 3 (485+) A(+) 2 (485-) B(-) 1 (GND) Figure 5.10: P60N Touch Screen Display Port 5-10 Electro Industries/Gauge Tech Doc # E151701...

  • Page 63: 9: Communication Ports On The Output Modules

    For more detail, refer below to Section 5.3.10 and to Chapter 10 of this manual. Mounting Brackets Female RS485 Side Port LEDs Output Port (Size and pin configuration vary) Male RS485 Side Port Figure 5.11: Communication Ports on the Output Modules 5-11 Electro Industries/Gauge Tech Doc # E151701...

  • Page 64: 10: Rs485 Connection-Meter To Output Modules

    R T * See R T Note on page 5-5. Please refer to Cable Color Key, page 6-4, 1262/1272 Port 4 and second bullet, page 5-5. Figure 5.12: Meter Connected to Output Module 5-12 Electro Industries/Gauge Tech Doc # E151701...

  • Page 65: 11: Steps To Determine Power Needed

    2.7 VA DISPLAYS’ VA RATINGS P40N, P41N, P43N LED Display 3.0 VA (typical)* P60N Touch Screen Display 5.0 VA (typical) * 3.0 VA is the typical VA Rating for P40N 2005 or later. 5-13 Electro Industries/Gauge Tech Doc # E151701...

  • Page 66: 13: Remote Communication Over Telephone Lines Using The Rs485 Port

    PC at office Originate Telephone Line Remote ® Nexus 1262/1272 Meter Modem Modem NULL Modem Adapter (Not required if Modem Manager is used RS232 to RS485 Converter (Modem Manager Recommended) Figure 5.13: Remote Connections—RS485 5-14 Electro Industries/Gauge Tech Doc # E151701...
  • Page 67 EIG recommends the Modem Manager to alleviate any communication line errors that might occur. Using the Modem Manager also eliminates the need to program default settings into the modem. This makes installation simpler. 5-15 Electro Industries/Gauge Tech Doc # E151701...

  • Page 68: 14: Programming Modems For Remote Communication

    • When programming the remote modem with a terminal program, make sure the baud rate of the terminal program matches the meter’s baud rate. 5-16 Electro Industries/Gauge Tech Doc # E151701...

  • Page 69: 15: Selected Modem Strings

    5.3.15: Selected Modem Strings Modem String/Setting Cardinal modem: AT&FE0F8&K0N0S37=9 Zoom/Faxmodem VFX V.32BIS(14.4K): AT&F0&K0S0=1&W0&Y0 Zoom/Faxmodem 56Kx Dual Mode: AT&F0&K0&C0S0=1&W0&Y0 USRobotics Sportster 33.6 Faxmodem: AT&F0&N6&W0Y0 (for 9600 baud) DIP switch setting: Up Up Down Down Up Up Up Down USRobotics Sportster 56K Faxmodem: AT&F0&W0Y0 DIP switch setting: Up Up Down Down Up Up Up Down...

  • Page 70: 17: Irig-B Connections

    (-) terminal of the meter to the (-) terminal of the signal generating device. Troubleshooting Tip: The most common source of problems is a reversal of the two wires. Try reversing the wires. 5-18 Doc #: E151701 Electro Industries/GaugeTech...

  • Page 71: 18: Time Synchronization Alternatives

    2. Script & Scheduler: Time Stamps Retrieved Logs and Data. 3. MV90: Can synchronize time on retrievals in the form of a Time Stamp. Refer to the Communicator EXT User Manual (HHF Converter) for more MV-90 details. 5-19 Electro Industries/GaugeTech Doc # E151701...

  • Page 72: 1: Hardware Overview

    The modem will respond to computer commands to download data or other actions authorized by the meter passwords. Refer to the Communicator EXT User Manual for instructions on programming the modem. 5-20 Electro Industries/GaugeTech Doc # E151701...

  • Page 73: 4: Dial-Out Function

    3. Peel and stick the velcro adhesive somewhere outside the meter (or use the old adhesive to fasten the battery in place). NOTE: Custom leads and Velcro mounting are not included in some earlier versions of the Switchboard Meter. Call the factory for installation/replacement part BATT4384. 5-21 Electro Industries/GaugeTech Doc # E151701...

  • Page 74: Inp200 Onboard Ethernet

    To configure the Network settings, use the following steps. 1. Using Port 1, Port 4 (RS485 connection), or the optical port connect a PC to the meter. An RS232/RS485 Converter may be required (Example: Electro Industries Unicom 2500). 2. Double click on Communicator EXT Software to open it.

  • Page 75: Inp202 Ethernet/Modem Combination

    The Nexus® 1262/1272 meter with the INP202 Option has all the components of an INP200 Nexus® meter plus a built-in modem. It has the capability of connecting to a network through an Ethernet LAN and with other devices via modem. 5-23 Electro Industries/GaugeTech Doc # E151701...

  • Page 76: 2: Hardware Connection

    To make the software connection, use the following steps. 1. Using Port 1 or Port 4 (RS485 connection), connect a PC to the meter. An RS232/RS485 Converter may be required (Example: Electro Industries’ Unicom 2500). 2. Double click on Communicator EXT Software to open it.

  • Page 77: Chapter 6: Hardware Installation

    Modem Battery, with the Outer Shroud on the meter, locate the battery cable at the back of the meter and insert the cable connector into the cable. Use the velcro (peel and stick) to attach the battery somewhere outside of the meter. See Figure 6.6. Doc # E151701 Electro Industries/GaugeTech...
  • Page 78 Cable 4 RS485 Cable 5 RJ-11 Modem Cable 7 Battery Cable 3 Cable 2 Optional KYZ Cable to High- Ethernet Cable Speed Inputs Cable 6 RJ-45 Ethernet ® Figure 6.2: Nexus 1272 Rear View Diagram Doc # E151701 Electro Industries/GaugeTech...

  • Page 79: Figure 6.3: Nexus 1262/1272 Meter Mounted In A-Base Bottom

    0.87” (22.1 10.4” (264.2mm) 6.84”” (173.7mm) ® Figure 6.3: Nexus 1262/1272 Meter Mounted in A-Base Bottom 4.57” 116.1 mm) 2.02” 6.60” (51.3mm) (167.6mm) ® Figure 6.4: Nexus 1262/1272 Meter A Base Side View Doc # E151701 Electro Industries/GaugeTech...

  • Page 80: 1: Cable Color Key

    Pink NORMALLY OPEN 4 White IMPORTANT NOTE: Cable colors are subject to change without notice in this manual. Refer to CABLE LABELS for color code verification. ® Table 6.1: Nexus 1262/1272 Meter Cable Color Key Doc # E151701 Electro Industries/GaugeTech...

  • Page 81: Internal Battery Installation And Maintenance

    Make sure you place the facing up. 6. Replace the internal shroud and the external meter cover. 7. Energize the meter. 8. Reset Time using Communicator software. If IRIG-B is connected, time is synchronized automatically. Electro Industries/GaugeTech Doc #: E151701...

  • Page 82: 1: Battery Holder Detail

    Do not expose contents of battery to water or to high humidity for extended periods of time. • Dispose of batteries in accordance with local, state and federal hazardous waste regulations. • NOTE: The replacement of the Modem Battery is detailed in section 5.4.4. Doc # E151701 Electro Industries/GaugeTech...
  • Page 83 Nexus P40N Display, Side View Nexus P40N Display, Front View 3.38” (8.58cm) Sq 4 X 0.198” (5.02mm) ANSI C39.1 Drill Plan 1.687” (14.28cm) ® Figure 6.7: Nexus P40N, P41N, P43N LED External Display Mounting Diagrams Doc # E151701 Electro Industries/GaugeTech...

  • Page 84: Mounting The Optional Nexus® P60N Touch Screen External Display

    (PSIO) to non-condensing pins 4, 5 NOTE: One of the display-mounting Meter to 485+, studs MUST be grounded (automatic if 485- mounted in a metal grounded panel). and GND ® Figure 6.9: Nexus P60N Back Detail Doc # E151701 Electro Industries/GaugeTech...

  • Page 85: Daisy Chain Meters With The P60N

    Chapter 10 details the screens and the Navigational Map for the P60N Display. 6. Click NEXT to select a screen from which you want to retrieve data. Figure 6.11: Daisy Chain Meters with the P60N Touch Screen Display Doc # E151701 Electro Industries/GaugeTech...

  • Page 86: Mounting The Nexus® External Output Modules

    0.015” (0.37mm) 4.1” (104.14mm) Mounting Bracket Figure 6.12: Nexus® Output Modules Mounting Diagram, Overhead View Mounting Brackets (MBIO) Female RS-485 Side Port Output Port Male RS-485 Side Port Figure 6.13: Nexus® Output Module Communication Ports Doc # E151701 Electro Industries/GaugeTech 6-10...
  • Page 87 Nexus® Output Modules with PSIO Mounting Diagram, Front View Mounting Bracket (MBIO) Mounting Bracket (MBIO) 1.25” (31.75mm)+Y Per Module+ X Per PSIO 2.20” (55.87mm) 3.44” 2x1.10” (27.93mm) (87.38mm) 0.6” 1.31” (31.37mm) (15.24mm) 1.73” (43.94mm) Figure 6.15 Electro Industries/GaugeTech Doc # E151701 6-11...
  • Page 88 Output module (see Figure 6.13), while the displays have the port on the back. See Chapter 5 for communication details. See Figure 5.11 for wiring details. Electro Industries/GaugeTech Doc # E151701 6-12...

  • Page 89: Introduction

    TOU accumulations continue until the next monthly bill date or next start-of-season is reached. Accumulation can span into the following year. If no following year is present, the last accumulation for the year will end on 12:31:23:59:59. Doc # E151701 Electro Industries/GaugeTech...

  • Page 90: Tou Frozen & Active Registers

    Integration Intervals and set the desired intervals. Click OK. To set Cumulative Demand Type, from the Device Profile click Revenue & Energy Settings > Cumulative Demand Type and select Block or Rolling Window. Click OK. Doc #: E151701 Electro Industries/GaugeTech...

  • Page 91: Chapter 8: Transformer Loss Compensation

    This condition is shown in Figure 8.2. Point of Ownership Change Figure 9.2: Joint Ownership Line Metering Requiring Loss Compensation Figure 8.2: Joint Ownership Line Metering Requiring Loss Compensation Electro Industries/GaugeTech Doc # E151701...
  • Page 92 Nexus® 1262/1272 Meter Transformer Loss Compensation: • Performs calculations on each phase of the meter for every measurement taken. Unbalanced loads are accurately handled. • Calculates numerically, eliminating the environmental affects that cause inaccuracies in electromechanical compensators. Electro Industries/GaugeTech Doc # E151701...

  • Page 93: Nexus® 1262/1272 Meter's Transformer Loss Compensation

    This process is described in the following sections. Electro Industries/GaugeTech Doc # E151701...

  • Page 94: 1: Loss Compensation In Three Element Installations

    “Three Element Loss Compensation Worksheet” below. In order to activate the Excel Spreadsheet, you must have MS Excel installed on your computer. NOTE: A copy of the Excel Spreadsheet with Example Numbers can be found in Appendix A of this manual. Electro Industries/GaugeTech Doc # E151701...

  • Page 95: 1: Three Element Loss Compensation Worksheet

    Test Voltage is generally Phase-to-Phase for three-phase transformers. Calculate Phase-to-Neutral Voltage by dividing Phase-to-Phase Voltage by √3. Calculate Full Load Current by dividing the (1-Phase kW Self-Cooled Rating) by the (Phase-to-Neutral Voltage) and multiplying by 1000. Electro Industries/GaugeTech Doc # E151701...
  • Page 96 = (%Exciting Current) * (1-Phase kVA Self-Cooled Rating) / 100 = (______________) * (________________) / 100 = _______________ kVA No-Load Loss VAR (kVAR) = SQRT((No-Load Loss kVA) - (No-Load Loss kW) = SQRT((_________________) - (________________) = SQRT((__________________) - (_________________)) = SQRT (_________________) = ____________________ Electro Industries/GaugeTech Doc # E151701...
  • Page 97 Calculate the “Value at Meter Base” by multiplying the (M/T Factor w/ Exp) times the (Value at Trf Base). Loss Watts Percentage Values Meter Base kVA = 600 * (PT Multiplier) * (CT Multiplier) / 1000 = 600 * (____________) * (___________) / 1000 = ________________ Doc # E151701 Electro Industries/GaugeTech...
  • Page 98 Calculate “% Loss at Meter Base” by dividing (Value at Meter Base) by (Meter Base kVA) and multiplying by 100. Enter calculated % Loss Watts values into the Nexus® meter using Communicator EXT software. Electro Industries/GaugeTech Doc # E151701...

  • Page 99: Overview

    The Nexus® 1262/1272 Socket Meters have a backlit LCD display built into the meter. In addition, Electro Industries offers two optional external displays, each powered by an additional power supply (such as PSIO). The P40N is our LED display, which provides easy-to-use access to the information stored in the Nexus®...

  • Page 100: Dynamic Readings Mode

    Fixed (Block) Window Average Maximum +kWatt/+kVAR/CoIn kVAR • Predictive Sliding (Rolling) Window Maximum +kWatt/+kVAR/CoIn kVAR Group 5:VA/PF/Frequency (Use the LEFT/RIGHT arrows to access the following readings, in order.) • kVA/PF lag/Hz • Maximum kVA/Hz • Minimum kVA/Hz Electro Industries/GaugeTech Doc # E151701...
  • Page 101 • • • • • Group 9: Phase Angles (Use the LEFT/RIGHT arrows to access the following readings, in order.) • Phase Angle Van/bn/cn • Phase Angle Ia/b/c • Phase Angle Vab/bc/ca • Phase Sequence Electro Industries/GaugeTech Doc # E151701...

  • Page 102: Navigational Map Of Dynamic Readings Mode

    Return to Negative Positive Positive kVARhr kVARhr kWatthr kVAhr First kVAhr Q2+Q3 Reading Return to First Reading Phase Angles V Phase Angles I Phase Angles V Return to First Phase AN,BN,CN A,B,C AB,BC,CA Reading Sequence Electro Industries/GaugeTech Doc # E151701...

  • Page 103: Nexus® Information Mode

    Group 5: Firmware Versions and Serial Numbers (Use the LEFT/RIGHT arrows to access the following readings, in order.) • RunTime External Display/RunTime DSP/RunTime Comm • Boot External Display/Boot DSP/Boot Comm • Serial Number External Display; Serial Number Nexus Meter Electro Industries/GaugeTech Doc # E151701...
  • Page 104 Port 2 Port 3 Port 4 Port 1 Return PT Ratio CT Ratio First Reading Display Primary/Secondary Return Serial # Run-time Boot Display, Serial Display, Display, First DSP, Comm DSP, Comm # Monitor Reading Electro Industries/GaugeTech Doc # E151701 9- 6...

  • Page 105: Display Features Mode

    Press Enter to turn the scroll feature on or off. When the scroll feature is on, the P40N External Display will scroll through the first reading of each group in the Dynamic Readings Mode. If a button is pressed during the scroll, scrolling pauses for one minute. Electro Industries/GaugeTech Doc # E151701...

  • Page 106: Navigational Map Of Display Features Mode

    9.8: Navigational Map of Display Features Mode Use UP/DOWN arrows to scroll between groups. Reset Max/Min Reset Energy Baud Rate/Address Communication Protocol EIG Use Only EIG Use Only Lamp Test Display Scroll On/Off Electro Industries/GaugeTech Doc # E151701...

  • Page 107: Figure 9.5: Nexus® P60N Touch Screen External Display

    View Limits View / Change Settings Figure 9.5: Nexus® P60N Touch Screen External Display GENERAL PAGE: Overview of Real Time Readings • Volts AN/BN/CN/AB/BC/CA • Amps A/B/C • Watts • VARS • • FREQ • Electro Industries/GaugeTech Doc # E151701...
  • Page 108 AMPS: Current Readings Details • Real Time Current A/B/C • Maximum Current A/B/C • Minimum Current A/B/C • Current Calculated N/Measured N • Maximum Current Calculated N/ Measured N Touch A-B-C to view Current Detail. Electro Industries/GaugeTech Doc #: E151701 9-10...
  • Page 109 +VARhr Quadrant 2 (Primary) • +VAhr Quadrant 3 (Primary) • -VARhr Quadrant 3 (Primary) • +Watthr Quadrant 1+Quadrant 4 (Primary) • +VAhr for all Quadrants (Primary) Touch TOU button to view TOU Register Accumulations screen. Electro Industries/GaugeTech Doc # E151701 9-11...
  • Page 110 START or STOP will appear, depending on Status. FLICKER - SHORT TERM: • Volts A/B/C • Max Volts A/B/C • Min Volts A/B/C Touch INST or LONG TERM to view screens. START or STOP will appear, depending on Status. Electro Industries/GaugeTech Doc # E151701 9-12...
  • Page 111 • Phase Angle Ia/b/c • Phase Angle Vab/bc/ca WAVEFORM: Real Time Waveform Graph • Channel Va/b/c • Channel Ia/b/c • % THD, KFactor, Frequency for selected channel Touch CHANNEL button to scroll through channels. Electro Industries/GaugeTech Doc #: E151701 9-13...
  • Page 112 Touch OK to return to Trending Analysis screen. REAL TIME TRENDING DETAIL: A Table of Logs for the Selected Channel (Volts AN shown here). Touch BACK to return to the Trending Analysis screen. Touch PREVIOUS LOGS to view other logs. Electro Industries/GaugeTech Doc # E151701 9-14...
  • Page 113 Nexus® Address (000 - 255). Touch Up/Down buttons to increase/decrease settings. Protocol (selected). Baud (selected). To Add an Address: Click UP to Add an Address. SAVE Button will appear. Click SAVE to Save the New Address. Electro Industries/GaugeTech Doc #: E151701 9-15...
  • Page 114 On Time: Current Date and Time Firmware Versions: • Nexus® 1262 meter Boot: Run-time: DSP Boot: DSP Run-time: LCD Display: This screen displays the current firmware version for the Nexus® meter and the display. Electro Industries/GaugeTech Doc # E151701 9-16...

  • Page 115: Navigational Map For P60N Touch Screen External Display

    9.10: Navigational Map for P60N Touch Screen External Display Electro Industries/GaugeTech Doc # E151701 9-17...

  • Page 116: Optional P40N, P41N, P43N Led External Display Specifications

    Nominal Power Consumption Approximately 5 Watts Operating Temperature Range C to +50 C / +32 F to +122 Overall Dimensions (HxWxL) 1.6 x 5.4 x 8.0 in / 4.0 x 13.7 x 20.3 cm Electro Industries/GaugeTech Doc # E151701 9-18...

  • Page 117: Hardware Overview

    Mounting Brackets (MBIO): used to secure one or more modules to a flat surface. Mounting Brackets (MBIO) Female RS485 Side Port LEDs Output Port (Size and pin Integrated Fastening System configuration vary) Male RS485 Side Port Reset Button Figure 10.1: Output Module Components Electro Industries/GaugeTech Doc # E151701 10-1...

  • Page 118: 1: Port Overview

    10.1.1: Port Overview All Electro Industries Output Modules have ports through which they interface with other devices. The port configurations are variations of the three types shown below. Four Analog Outputs Eight Analog Outputs Four Relay Outputs (0-1 1 mA and 4-2 2 0mA)

  • Page 119: Installing Nexus® External Output Modules

    Figure 10.2: Nexus Meter Connected to Output Module * NOTE: Termination Resistors are only needed with runs typically more than 500 feet. The meter has some level of termination internally and usually resistors are not needed. Electro Industries/GaugeTech Doc # E151701 10-3...

  • Page 120: 1: Power Source For Output Modules

    Figure 10.3: The PSIO Power Source (Side View) showing Male RS485 Side Port Figure 10.4: Power flow from PSIO to Output Module Figure 10.5: Labels for the PSIO Power Source (Labels are Red & White.) Electro Industries/GaugeTech Doc # E151701 10-4...

  • Page 121: Using Multiple Output Modules

    User Manual for details on configuring and programming the Output Modules. 2. Determine how many power sources (such as PSIO) are needed for the number of modules in use. See Section 5.3.11 for details. Electro Industries/GaugeTech Doc # E151701 10-5...

  • Page 122: Factory Settings And Reset Button

    Model # Module Factory-Set Address 1mAON4 0±1mA, 4-Channel Analog Output 1mAON8 0±1mA, 8-Channel Analog Output 20mAON4 4–20mA, 4-Channel Analog Output 20mAON8 4–20mA, 8-Channel Analog Output 4RO1 4 Latching Relay Outputs 4PO1 4 KYZ Pulse Outputs Doc # E151701 Electro Industries/GaugeTech 10-6...

  • Page 123: Analog Transducer Signal Output Modules

    The Nexus® 1262/1272 unit does not supply power for the Analog Output modules. See Section 10.2 for power and communication details. All outputs share a single common point. This is also an isolated connection (from ground). Electro Industries/GaugeTech Doc # E151701 10-7...

  • Page 124: 2: Normal Mode

    3. Read and average the A/D and adjust values for Process 2 above. The device will operate with the following default parameters: Address 247 (F7H) Baud Rate 57600 Baud Transmit Delay Time Normal Operation is prevented by a number of occurrences. See Section 10.4.1 for details. Electro Industries/GaugeTech Doc # E151701 10-8...

  • Page 125: Digital Dry Contact Relay Output (Form C) Module

    The Modbus Map for the Relay Output Module (and operating details) can be found in the Modbus Communicating Output Modules Manual. Each latching relay will hold its state in the event of a power loss. Doc # E151701 Electro Industries/GaugeTech 10-9...

  • Page 126: 2: Communication

    Some situations will cause the device to operate with the above Default Parameters. See Section 10.4.1 for details of Default Mode. 10.6.3: Normal Mode Normal Mode consists of one process: 1. The device accepts new commands to control the relays. Electro Industries/GaugeTech Doc # E151701 10-10...

  • Page 127: Digital Solid State Pulse Output (Kyz) Module

    See Section 10.2 for power and communication details. The Modbus Map for the KYZ Pulse Output Module (and operating details) can be found in the Modbus Communicating Output Modules Manual. NC = Normally Closed; NO = Normally Open; C = Common. Electro Industries/GaugeTech Doc # E151701 10-11...

  • Page 128: 2: Communication

    Bit 5: 1 = 1 or more Programmable Settings are invalid Bit 6: 1 = 1 or more Programmable Settings have been modified Bit 7: 1 = Forced Default by Reset Value Bit 15: 1 = Normal Operation of the device is disabled Electro Industries/GaugeTech Doc # E151701 10-12...

  • Page 129: Specifications

    Other Output Module Accessories PSIO: External Power Supply which is necessary if you are connecting Output modules to a Nexus® 1262 or 1272 Socket Meter. MBIO: Bracket for surface-mounting Output modules to any enclosure. Electro Industries/GaugeTech Doc # E151701 10-13...
  • Page 130 Electro Industries/GaugeTech Doc # E151701 10-14...
  • Page 131 3-Wire Delta, 2 PTs, 2 CTs 11.14 4-Wire Delta, no PTs, 2 CTs 11.15 4-Wire Delta, 2 PTs, 2 CTs 11.16 9S in S/A Form 9S mounted in S/A Adapter (showing connectors) 11.17 Table 11.1: Nexus® 1262/1272 Meter Forms Electro Industries/GaugeTech Doc # E151701 11-1...
  • Page 132 Meters may be externally powered using a (120 to 230)V AC or (125 to 400)V DC power supply. NOTE: For forms not on the above list, contact the factory and let us know your requirements. Electro Industries/GaugeTech Doc # E151701 11-2...
  • Page 133 Fig 11.1: Form 9S Wye, no PTs, 3 CTs Electro Industries/GaugeTech Doc # E151701 11-3...
  • Page 134 Fig 11.2: Form 9S Wye, 3 PTs, 3 CTs Electro Industries/GaugeTech Doc # E151701 11-4...
  • Page 135 Fig 11.3: Form 9S 4-Wire Delta, no PTs, 3 CTs Electro Industries/GaugeTech Doc # E151701 11-5...
  • Page 136 Fig 11.4: Form 9S 4-Wire Delta, 3 PTs, 3 CTs Electro Industries/GaugeTech Doc # E151701 11-6...
  • Page 137 Fig 11.5: Form 9S 4-Wire Delta, no PTs, 2 CTs (Neutral is not shown for simplicity) Electro Industries/GaugeTech Doc # E1151701 11-7...
  • Page 138 Fig 11.6: Form 9S 4-Wire Delta, 2 PTs, 2 CTs (Neutral is not shown for simplicity) Electro Industries/GaugeTech Doc # E151701 11-8...
  • Page 139 Fig 11.7: Form 9S 3-Wire Delta, no PTs, 2 CTs Electro Industries/GaugeTech Doc # E151701 11-9...
  • Page 140 Fig 11.8: Form 9S 3-Wire Delta, 2 PTs, 2 CTs Electro Industries/GaugeTech Doc # E151701 11-10...
  • Page 141 Fig 11.9: Form 36S 2.5 Element Wye, no PTs, 3 CTs Electro Industries/GaugeTech Doc # E151701 11-11...
  • Page 142 Fig 11.10: Form 36S 2.5 Element Wye, 2 PTs, 3 CTs Electro Industries/GaugeTech Doc # E151701 11-12...
  • Page 143 Fig 11.11: Form 45S Wye, no PTs, 3 CTs Electro Industries/GaugeTech Doc # E151701 11-13...
  • Page 144 Fig 11.12: Form 45S Wye, 2 PTs, 3 CTs Electro Industries/GaugeTech Doc #: E151701 11-14...
  • Page 145 Fig 11.13: Form 45S 3-Wire Delta, no PTs, 2 CTs Electro Industries/GaugeTech Doc # E151701 11-15...
  • Page 146 Fig 11.14: Form 45S 3-Wire Delta, 2 PTs, 2 CTs Electro Industries/GaugeTech Doc # E151701 11-16...
  • Page 147 Fig 11.15: Form 45S 4-Wire Delta, no PTs, 2 CTs (Neutral is not shown for simplicity) Electro Industries/GaugeTech Doc # E151701 11-17...
  • Page 148 Fig 11.16: Form 45S 4-Wire Delta, 2 PTs, 2 CTs (Neutral is not shown for simplicity) Electro Industries/GaugeTech Doc # E151701 11-18...
  • Page 149 “pushed” into the S/A Adapter until the meter “snaps” into place. The blades on the back of the socket meter make the proper connection. See section 11.1 for the 9S Form wiring diagrams. Fig 11.17: Form 9S Mounted in an S/A Adapter (Front Terminal Cover Removed) Electro Industries/GaugeTech Doc # E151701 11-19...
  • Page 150 Electro Industries/GaugeTech Doc # E151701 11-20...

  • Page 151: Chapter 12: Nexus® 1262/1272 Switchboard Meter (Type Z)

    (see Section 12.5); dimensions are obviously different (see Section 12.3); installation is different and easy (see Section 12.4). Caution: The Power Supply Input on 1262/1272 units is configured differently. Please check wiring carefully. 12-1 Electro Industries/GaugeTech Doc # E151701...

  • Page 152: Labels

    3 of this manual for a description of the components on the front and shroud labels. Fig. 12.2: Front view of the 1272 Switchboard Meter Fig. 12.3: Example Options Label for the 1262 or 1272 Switchboard Meter 12-2 Electro Industries/GaugeTech Doc # E151701...

  • Page 153: Specifications And Dimensions

    The specifications are detailed in Chapter 2 of this manual. The Nexus® Switchboard Meter is essentially the socket meter in an optional oblong case. The dimensions are detailed in Figures 12.1 (Front View), 12.4 (Back View) and 12.5 (Side View). Electro Industries/GaugeTech www.electroind.com Fig. 12.4: Switchboard Meter, Back View Caution: Power In on new units is configured differently.
  • Page 154 Fig. 12.5: Switchboard Meter, Side View 12-4 Electro Industries/GaugeTech Doc # E151701...
  • Page 155 Please check DRILL HOLES for the mounting screw you are using. Check to see that the mounting screw fits the box tightly enough to hold the box in place. You can use a washer for a slightly smaller mounting screw. 12-5 Electro Industries/GaugeTech Doc # E151701...

  • Page 156: Installation

    Position the case front against the four screw holes. Secure the front of the case by turning the four built-in screws in each of the corners. Built-in Screws Fig. 12.7: Front Case showing Built-In Screws 12-6 Electro Industries/GaugeTech Doc # E151701...
  • Page 157 All wiring should be done by a licensed professional. Actual installation procedures, materials, equipment and connections must conform to applicable codes and standards. Fig. 12.8: Back Angle View of Switchboard Meter 12-7 Electro Industries/GaugeTech Doc # E151701...
  • Page 158 Caution: Power Supply Input on new units is configured differently. Please check wiring carefully. Fig. 12.9: 9Z Transformer Rated Wye, no PTs, 3 CTs. 12-8 Electro Industries/GaugeTech Doc # E151701...
  • Page 159 Caution: Power Supply Input on new units is configured differently. Please check wiring carefully. Fig. 12.10: 9Z Transformer Rated Wye, 3 PTs, 3 CTs. 12-9 Electro Industries/GaugeTech Doc # E151701...
  • Page 160 Caution: Power Supply Input on new units is configured differently. Please check wiring carefully. Fig. 12.11: 9Z Transformer Rated 4-Wire Delta, no PTs, 3 CTs. 12-10 Electro Industries/GaugeTech Doc # E151701...
  • Page 161 Caution: Power Supply Input on new units is configured differently. Please check wiring carefully. Fig. 12.12: 9Z Transformer Rated 4-Wire Delta, 3 PTs, 3 CTs. 12-11 Electro Industries/GaugeTech Doc # E151701...
  • Page 162 Caution: Power Supply Input on new units is configured differently. Please check wiring carefully. Fig. 12.13: 9Z Transformer Rated 4-Wire Delta, no PTs, 2 CTs. 12-12 Electro Industries/GaugeTech Doc # E151701...
  • Page 163 Caution: Power Supply Input on new units is configured differently. Please check wiring carefully. Fig. 12.14: 9Z Transformer Rated 4-Wire Delta, 2 PTs, 2 CTs. 12-13 Electro Industries/GaugeTech Doc # E151701...
  • Page 164 Caution: Power Supply Input on new units is configured differently. Please check wiring carefully. Fig. 12.15: 9Z Transformer Rated 3-Wire Delta, no PTs, 2 CTs. 12-14 Electro Industries/GaugeTech Doc # E151701...
  • Page 165 Caution: Power Supply Input on new units is configured differently. Please check wiring carefully. Fig. 12.16: 9Z Transformer Rated 3-Wire Delta, 2 PTs, 2 CTs. 12-15 Electro Industries/GaugeTech Doc # E151701...
  • Page 166 Caution: Power Supply Input on new units is configured differently. Please check wiring carefully. Fig. 12.17: 36Z 2.5 Element Wye, no PTs, 3 CTs. 12-16 Electro Industries/GaugeTech Doc # E151701...
  • Page 167 Caution: Power Supply Input on new units is configured differently. Please check wiring carefully. Fig. 12.18: 36Z 2.5 Element Wye, 2 PTs, 3 CTs. 12-17 Electro Industries/GaugeTech Doc # E151701...
  • Page 168 12-18 Electro Industries/GaugeTech Doc # E151701...

  • Page 169: Chapter 13: Nexus® Meter Calculations

    For Delta: x = a, b, c ∑ Root Mean Square (RMS) of Phase to Phase Voltages: n = number of samples For Wye: x,y = an, bn or bn, cn or cn, an ∑ − Electro Industries/GaugeTech Doc # E151701 13-1...
  • Page 170 For Wye: X = A, B, C VA V • Reactive Power (VAR) per phase: For Wye: X = A, B, C VA W − Q per phase: For Wye: X = A, B, C VAR W For Delta: unused Electro Industries/GaugeTech Doc # E151701 13-2...
  • Page 171 ⎝ ⎠ ⎛ ⎞ ∑ • ⎜ ⎟ bc t ⎜ ⎟ • − ⎜ ⎟ ⎜ ⎟ ⎝ ⎠ Apparent Power (VA) Total: For Wye: VA VA VA VA For Delta: W VAR Electro Industries/GaugeTech Doc # E151701 13-3...
  • Page 172 Power Factor (PF): For Wye: X = A, B, C, T For Delta: X = T Total Average Power Factor: X = Quadrants 1 & 4 (positive Wh), Quadrants 2 & 3 (negative Wh) Total Ave Electro Industries/GaugeTech Doc # E151701 13-4...
  • Page 173 For Delta: X = I A , I B , I C , V AB , V BC , V CA ∑ K Factor: X = I A , I B , I C ∑ h RMS KFactor ∑ Voltage Imbalance: ∑ v v v Current Imbalance: CalcN Electro Industries/GaugeTech Doc # E151701 13-5...

  • Page 174: Demand Integrators

    During the next subinterval, as actual power readings occur, the value for the subinterval consists of the portion actually mesured plus a predicted guess, prorated to the subinterval time remaining. Electro Industries/GaugeTech Doc # E151701 13-6...
  • Page 175 ⎡ ⎤ − ∑ ⎢ ⎥ ⎡ Len Cnt ⎤ − − ⎡ ⎤ ⎢ ⎥ xPct − ⎢ ⎥ ⎢ ⎥ − − ⎢ ⎥ ⎣ ⎣ ⎦ ⎦ ⎢ ⎥ ⎣ ⎦ Electro Industries/GaugeTech Doc # E151701 13-7...
  • Page 176 Electro Industries/GaugeTech Doc #: E151701 13-8...

  • Page 177: Overview

    Flicker is computed using the three phase-to-neutral voltages in WYE configurations and the three phase-to-phase voltages when in DELTA. Evaluation occurs in the following forms: Instantaneous, Short Term or Long Term. Each form is detailed below: Electro Industries/GaugeTech Doc # E151701 14-1...
  • Page 178 Flicker = Changes in the illumination of light sources due to cyclical voltage variations. Pinst = Instantaneous flicker values in Perceptibility Units (PU). Pst = Value based on 10-minute analysis. Plt = Value based on 12 Pst values. Electro Industries/GaugeTech Doc # E151701 14-2...

  • Page 179: Setup

    Initially the user must set up several parameters to properly configure Flicker. Using Communicator EXT, from the Icon Menu select Edit Device Profile. From the Device Profile, select Power Quality and Alarm Settings, EN50160 Flicker. The following screen will appear: Electro Industries/GaugeTech Doc # E151701 14-3...

  • Page 180: Software - User Interface

    From the Communicator EXT Icon Menu select Real Time Poll, Flicker. The following screen appears: This section describes the Main Screen functions. The available values (Instantaneous, Short Term, Long Term) will be described below. Electro Industries/GaugeTech Doc # E151701 14-4...
  • Page 181 Instantaneous tab to display the Instantaneous screen. The PU values, Pinst for Voltage Inputs Va, Vb and Vc are displayed here and are continuously updated. The corresponding Current Voltage values for each channel are displayed for reference. Electro Industries/GaugeTech Doc # E151701 14-5...
  • Page 182 Current Plt Max values for Va, Vb and Vc since the last reset and the time of the last reset. • Current Plt Min values for Va, Vb and Vc since the last reset and the time of the last reset. Electro Industries/GaugeTech Doc # E151701 14-6...

  • Page 183: Logging

    Max and Min values are only displayed; they cannot be graphed. But, Max and Min values are available for export. Graphed values include Pst and Plt Va, Vb and Vc. Displayed values include Pst and Plt Max and Min for Va, Vb and Vc. Electro Industries/GaugeTech Doc # E151701 14-7...

  • Page 184: Performance Notes

    Operation is at 230V for 50Hz and 120V for 60Hz as per specification. If the input voltage is different, the system will normalize it to 230V or 120V for computational purposes. Electro Industries/GaugeTech Doc # E151701 14-8...

  • Page 185: Appendix A Transformer Loss Compensation Excel Spreadsheet With Examples

    Loss screen of the Device Profile. The copy of the Spreadsheet with Example Numbers found on the following pages will assist you. Important! Refer to Appendix B of the Communicator EXT User Manual for additional instructions and information on the Transformer Line Loss application. Electro Industries/GaugeTech Doc # E151701...
  • Page 186 Electro Industries/GaugeTech Doc # E151701...
  • Page 187 Electro Industries/GaugeTech Doc # E151701...
  • Page 188 Electro Industries/GaugeTech Doc # E151701...
  • Page 189 Electro Industries/GaugeTech Doc # E151701...
  • Page 190 Electro Industries/GaugeTech Doc # E151701...

  • Page 191: Appendix B Blade Configuration For Forms 9S, 36S And 45S

    9S and the 36S are the same. There is a drawing showing the knockout holes for each configuration. Note: The forms referred to in this chapter comply with ANSI forms 9S, 36S and 45S. Electro Industries/GaugeTech Doc # E151701...
  • Page 192 Fig. B.1: Form 9S & 36S Base with Knock Out Holes Fig. B.2: Form 45S Base with Knock Out Holes Note: The forms referred to on this page comply with ANSI forms 9S, 36S and 45S. Electro Industries/GaugeTech Doc # E151701...

  • Page 193: Appendix C: Three-Phase Power Measurement

    The three voltages are separated by 120 o electrically. Under balanced load conditions with unity power factor the currents are also separated by 120 o . However, unbalanced loads and other conditions can cause the currents to depart from the ideal 120 o separation. Electro Industries/GaugeTech Doc # E151701...

  • Page 194: Table C.1: Common Phase Voltages On Wye Services

    Table C.1, even though a neutral or ground wire is not physically present at the load. The transformer is the best place to determine the circuit connection type because this is a location where the voltage reference to ground can be conclusively identified. Doc # E151701 Electro Industries/GaugeTech...

  • Page 195: C.1.2: Delta Connection

    On a 120/240 volt, four-wire, grounded delta service the phase-to-ground voltage would be 120 volts on two phases and 208 volts on the third phase. Figure C.5 shows the phasor diagram for the voltages in a three-phase, four-wire delta system. Electro Industries/GaugeTech Doc # E151701...

  • Page 196: C.1.3: Blondell's Theorem And Three-Phase Measurement

    In modern digital meters, Blondell's Theorem is still applied to obtain proper metering. The difference in modern meters is that the digital meter measures each phase voltage and current and calculates the single-phase power for each phase. The meter then sums the three phase powers to a Electro Industries/GaugeTech Doc # E151701...
  • Page 197 In the circuit of Figure C.6 we must measure the power flow in three wires. This will require three voltage coils and three current coils (a three element meter). Similar figures and conclusions could be reached for other circuit configurations involving delta-connected loads. Electro Industries/GaugeTech Doc # E151701...

  • Page 198: C.2: Power, Energy And Demand

    1/60 (converting the time base from minutes to hours). Kilowatts Time (minutes) Figure C.7: Power Use Over Time Figure .7: Power use over time Electro Industries/GaugeTech Doc # E151701...

  • Page 199: Table C.2: Power And Energy Relationship Over Time

    59.68 kWh. The same process is applied to calculate the 15-minute demand value. The demand value associated with the example load is 59.68 kWh/hr or 59.68 kWd. Note that the peak instantaneous value of power is 80 kW, significantly more than the demand value. Electro Industries/GaugeTech Doc # E151701...

  • Page 200: C.3: Reactive Energy And Power Factor

    (angularly rotated 90 or perpendicular) to the voltage. Figure C.9 shows a single-phase voltage and current and breaks the current into its in-phase and quadrature components. Electro Industries/GaugeTech Doc # E151701...

  • Page 201: Figure C.9: Voltage And Complex Current

    A second type of power factor is Displacement Power Factor. Displacement PF is based on the angular relationship between the voltage and current. Displacement power factor does not consider the magnitudes of voltage, current or power. It is solely based on the phase angle differences. As a Electro Industries/GaugeTech Doc # E151701...

  • Page 202: Figure C.10: Nondistorted Current Waveform

    Figure C.11 shows a current waveform with a slight amount of harmonic distortion. The waveform is still periodic and is fluctuating at the normal 60 Hz frequency. However, the waveform is not a smooth sinusoidal form as seen in Figure C.10. Electro Industries/GaugeTech Doc # E151701...

  • Page 203: Figure C.11: Distorted Current Wave

    When harmonics are present it is important to remember that these quantities are operating at higher frequencies. Therefore, they do not always respond in the same manner as 60 Hz values. Electro Industries/GaugeTech Doc # E151701...
  • Page 204 Waveform capture is a real-time data collection event. Waveform capture should not be confused with waveform recording that is used to record multiple cycles of all voltage and current waveforms in response to a transient condition. Electro Industries/GaugeTech Doc # E151701...

  • Page 205: C.4: Harmonic Distortion

    If a power quality problem is suspected, it is generally wise to consult a power quality professional for assistance in defining the cause and possible solutions to the problem. Electro Industries/GaugeTech Doc # E151701...
  • Page 206 Electro Industries/GaugeTech Doc # E151701...
  • Page 207 The Block (Fixed) Window Average is the average power calculated over a (Power) user-set time interval, typically 15 minutes. This calculated average corresponds to the demand calculations performed by most electric utilities in monitoring user power demand. (See Rolling Window Average.) Electro Industries/Gauge Tech Doc # E151701 Glossary-1...
  • Page 208 An Ethernet LAN consists of at least one hub device (the network backbone) with multiple devices connected to it in a star configuration. The most common versions of Ethernet in use are 10BaseT Electro Industries/Gauge Tech Doc # E151701 Glossary-2...
  • Page 209 KYZ Output: Output where the rate of changes between 1 and 0 reflects the magnitude of a metered quantity. LCD: Liquid Crystal Display. LED: Light Emitting Diode. Doc # E151701 Electro Industries/Gauge Tech Glossary-3...
  • Page 210 (which is equal to two pulses). Q Readings: Q is the quantity obtained by lagging the applied voltage to a wattmeter by 60 degrees. Values are displayed on the Uncompensated Power & Q Readings screen. Electro Industries/Gauge Tech Doc # E151701 Glossary-4...
  • Page 211 A voltage quality event during which the RMS voltage is lower than normal for a period of time, typically from 1/2 cycle to 1 minute. Secondary Rated: Any Register or pulse output that does not use any CT or VT Ratio. Doc # E151701 Electro Industries/Gauge Tech Glossary-5...
  • Page 212 This input can be scaled to any value. However, the actual input voltage to the meter should be of the same magnitude as the voltages applied to the Va, Vb and Vc terminals. Electro Industries/Gauge Tech Doc # E151701 Glossary-6...

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