Electro-Voice 1252 - Manuals

Page 2 - Electro Industries/GaugeTech

Page 4 - ii; Customer Service and Support

Electro Industries/GaugeTech Doc # E107706 V1.2 5 ii Customer Service and Support Customer support is available 9:00 am to 4:30 pm, eastern standard time, Monday through Friday.Please have the model, serial number and a detailed problem description available. If the problem concerns a particular rea...

Page 5 - iii; About Electro Industries/GaugeTech

Electro Industries/GaugeTech Doc # E107706 V1.2 5 iii About Electro Industries/GaugeTech Electro Industries/GaugeTech was founded in 1973 by Dr. Samuel Kagan. Dr. Kagan’s first innovation,an affordable, easy-to-use AC power meter, revolutionized the power-monitoring field. In the 1980s Dr.Kagan and ...

Page 6 - iv

Electro Industries/GaugeTech Doc # E107706 V1.2 5 iv

Page 7 - Table of Contents; Chapter 2: Nexus Overview

Table of Contents Chapter 1: Three-Phase Power Measurement 1.1: Three-Phase System Configurations . . . . . . . . . . . . . . . . . . . . . 1-11.1.1: Wye Connnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11.1.2: Delta Connection . . . . . . . . . . . . . . . . . . . . . . . . . ....

Page 8 - : Navigational Map for P60N Touch Screen External Display; Chapter 7: Transformer Loss Compensation

Chapter 5: Communication Wiring 5.1: Communication Overview . . . . . . . . . . . . . . . . . . . . . . . . . 5-15.2: RS-232 Connection-Nexus Meter to a Computer . . . . . . . . . . . . . . . 5-55.3: RS-485 Wiring Fundamentals (with RT Explanation) . . . . . . . . . . . . . . 5-55.4: RS-485 Connecti...

Page 9 - vii

8.3: TOU Prior Season and Month . . . . . . . . . . . . . . . . . . . . . . . 8-28.4: Updating, Retrieving and Replacing TOU Calendars . . . . . . . . . . . . . . 8-28.5: Daylight Savings and Demand . . . . . . . . . . . . . . . . . . . . . . . 8-2 Chapter 9: Nexus External I/O Modules 9.1: Hardware...

Page 11 - Chapter 1; EEI Handbook for Electricity Metering; Phase System Configurations; Phase A

Electro Industries/GaugeTech Doc # E107706 V1.2 5 1-1 Chapter 1 Three-P Phase Power Measurement This introduction to three-phase power and power measurement is intended to provide only a briefoverview of the subject. The professional meter engineer or meter technician should refer to moreadvanced do...

Page 12 - Fig 1.2: Phasor Diagram Showing Three-phase Voltages and Currents; The phasor diagram shows the 120; Table 1.1: Common Phase Voltages on Wye Services

Electro Industries/GaugeTech Doc # E107706 V1.2 5 1-2 Fig 1.2: Phasor Diagram Showing Three-phase Voltages and Currents Q The phasor diagram shows the 120 o angular separation between the phase voltages. The phase-to- phase voltage in a balanced three-phase wye system is 1.732 times the phase-to-neu...

Page 17 - Table 1.2: Power and Energy Relationship Over Time; Time Interval

Table 1.2: Power and Energy Relationship Over Time As in Table 1.2, the accumulated energy for the power load profile of Figure 1.7 is 14.92 kWh. Q Demand is also a time-based value. The demand is the average rate of energy use over time. Theactual label for demand is kilowatt-hours/hour but this is...

Page 18 - : Reactive Energy and Power Factor; Intervals

Q Figure 1.8 shows another example of energy and demand. In this case, each bar represents the energy consumed in a 15-minute interval. The energy use in each interval typically falls between 50and 70 kWh. However, during two intervals the energy rises sharply and peaks at 100 kWh in interval number...

Page 19 - Figure 1.9: Voltage and Complex

Q The voltage (V) and the total current (I) can be combined to calculate the apparent power or VA.The voltage and the in-phase current (IR) are combined to produce the real power or watts. The volt-age and the quadrature current (IX) are combined to calculate the reactive power. The quadrature curre...

Page 20 - Figure 1.10: Nondistorted Current Waveform

result, it does not include the impact of harmonic distortion. Displacement power factor is calculatedusing the following equation: Displacement PF = cos θ, where θ is the angle between the voltage and the current (see Fig. 1.9). In applications where the voltage and current are not distorted, the T...

Page 22 - and; higher order harmonics.

Q Inductive and capacitive impedance are present in all power systems. We are accustomed to thinkingabout these impedances as they perform at 60 Hz. However, these impedances are subject to frequency variation. X L = j ω L and X C = 1/j ω C At 60 Hz, ω = 377; but at 300 Hz (5 th harmonic) ω = 1,885....

Page 23 - Cause

1.5: Power Quality Q Power quality can mean several different things. The terms "power quality" and "power qualityproblem" have been applied to all types of conditions. A simple definition of "power quality problem" is any voltage, current or frequency deviation that results ...

Page 25 - Chapter 2; Communicator EXT User Manual

e Electro Industries/GaugeTech Doc # E107706 V1.25 2-1 Chapter 2 Nexus Overview 2.1: The Nexus System Electro Industries’ Nexus 1250/1252 combines high-end revenue metering with sophisticated power quality analysis. Its advanced monitoring capabilities provide detailed and precise pictures of anymet...

Page 27 - Out Option; Refer to the; Out Function

e Electro Industries/GaugeTech Doc # E107706 V1.25 2-3 2.4: INP2 Internal Modem with Dial-IIn/Dial-O Out Option 2.4.1: Hardware Overview Q The INP2 Option for the Nexus 1250/1252 meter provides a direct connection to a standard tele-phone line. No additional hardware is required to establish a commu...

Page 28 - Communicates using the industry standard Modbus/TCP protocol.; software connection; Double click on Communicator EXT Software to open.

e Electro Industries/GaugeTech Doc # E107706 V1.25 2-4 2.5: Total Web Solutions Q The 10/100BaseT Ethernet Option (INP 100) is a fully customizable web server that uses XML to provide access to real time data via Internet Explorer. EIG’s name for this dynamic system is Total Web Solutions. The syste...

Page 31 - Wye; Wye; For; Wye; For; Wye; For; Delta; VA

e Electro Industries/GaugeTech Doc # E107706 V1.25 2-7 Q Power (Watts) per phase: For Wye : x = a, b, c Q Apparent Power (VA) per phase: For Wye : x = a, b, c Q Reactive Power (VAR) per phase: For Wye : x = a, b, c Q Power (Watts) Total: For Wye : For Delta : c b a T W W W W + + = n i v i v W n t C ...

Page 33 - cos

e Electro Industries/GaugeTech Doc # E107706 V1.25 2-9 Q Phase Angles: Q % Total Harmonic Distortion (%THD): For Wye : x = VAN, VBN, VCN, IA, IB, IC For Delta : x = IA, IB, IC, VAB, VBC, VCA Q K Factor: x = IA, IB, IC Q Watt hour (Wh): Q VAR hour (VARh): ) ( cos 1 PF − = ∠ 1 127 2 2 ) ( x h x RMS RM...

Page 34 - Thermal Demand; : This convention records the average (arithmetic mean) demand; Predictive Window Demand; : Predictive Window Demand enables the user to forecast average

e Electro Industries/GaugeTech Doc # E107706 V1.25 2-10 2.7: Demand Integrators Power utilities take into account both energy consumption and peak demand when billing customers.Peak demand, expressed in kilowatts (kW), is the highest level of demand recorded during a set periodof time, called the in...

Page 37 - Specification

e Electro Industries/GaugeTech Doc # E107706 V1.25 2-13 2.9: Nexus 1250/1252 Meter Specifications Specification Nexus Meter Control Power Requirements Option D: 24V DC (-20%) – 48V DC (+20%) Option D2: 120V AC/DC (-20%) – 230V AC (+20%) Input Voltage Range 150 Volts Phase to Neutral (Standard; for u...

Page 38 - : Nexus P60N Touch Screen Display Specifications

e Electro Industries/GaugeTech Doc # E107706 V1.25 2-14 2.10: Nexus P40N, P41N, P43N LED External Display Specifications Specification Nexus P40N, P41N, P43N LED External Display Maximum Input Voltage 30V DC Minimum Input Voltage 7V DC Maximum Power Consumption 8 Watts Nominal Power Consumption Appr...

Page 39 - enclosed and protected environment; , such as in a switchgear cabinet. Install; switch or circuit breaker; nearby label it clearly as the meter’s disconnecting mechanism.

Chapter 3 Hardware Installation 3.1: Mounting the Nexus 1250/1252 Meter Q The Nexus 1250/1252 Meter is designed to mount against any firm, flat surface. Use a #10 screw ineach of the four slots on the flange to ensure that the unit is installed securely. For safety reasons,mount the Meter in an encl...

Page 40 - Nexus Meter Mounting Diagram, Side View

Electro Industries/GaugeTech Doc # E107706 V1.2 5 3-2 Figure 3.2 2.35” (5.96cm) 3.40” (8.63cm) (MAX) Nexus Meter Mounting Diagram, Side View

Page 41 - : Mounting the Nexus LED External Displays; Figure 3.3: Nexus P40N LED External Display Mounting Diagrams

Electro Industries/GaugeTech Doc # E107706 V1.2 5 3-3 3.2: Mounting the Nexus LED External Displays Q The Nexus 1250/1252 LED Displays, Model # P40N, P41N and P43N, mount using a standardANSI C39.1 drill plan. Q Secure the four mounting studs to the back of the panel with the supplied nuts. Q Six fe...

Page 42 - : Mounting the Nexus P60N Touch Screen External Display; Figure 3.4: Nexus P60N Touch Screen Display Mounting Diagram

Electro Industries/GaugeTech Doc # E107706 V1.2 5 3-4 3.3: Mounting the Nexus P60N Touch Screen External Display Q The Nexus 1250/1252 P60N Touch Screen Display mounts easily, using the diagrams above and onthe next page. A bezel and a gasket are included with the P60N. Since the P60N employs an LCD...

Page 43 - Figure 3.6: Cutout for Nexus P60N Touch Screen Display; Carefully “drop in” the P60N with bezel and gasket attached.

Figure 3.6: Cutout for Nexus P60N Touch Screen Display Electro Industries/GaugeTech Doc # E107706 V1.2 5 3-5 Q To bezel mount the P60N, cut an opening in the mounting panel. Follow above cutout dimensions. Q Carefully “drop in” the P60N with bezel and gasket attached. Q Fasten the unit securely with...

Page 44 - Mounting Bracket

Electro Industries/GaugeTech Doc # E107706 V1.2 5 3-6 3.4: Mounting the Nexus External I/O Modules Q Secure the mounting brackets to the I/O using the screws supplied (#440 pan-head screws). Next,secure the brackets to a flat surface using a #8 screw with a lock washer. Q If multiple I/O modules are...

Page 45 - Per Module; Nexus I/O Modules Mounting Diagram, Front View

Electro Industries/GaugeTech Doc # E107706 V1.2 5 3-7 Figure 3.9 Mounting Bracket (MBIO) Mounting Bracket (MBIO) 0.605” (1.53cm) 2x1.10” (2.79cm) Y 1.235” (3.13cm) 1.25” (3.17cm)+Y Per Module 3.41” (8.66cm) 2.20” (5.58cm) Nexus I/O Modules Mounting Diagram, Front View

Page 47 - Chapter 4; : Wiring the Monitored Inputs and Voltages

Electro Industries/GaugeTech Doc # E107706 V1.2 5 4-1 Chapter 4 Electrical Installation 4.1: Wiring the Monitored Inputs and Voltages Q Select a wiring diagram from Section 4.8 that best suits your application. Wire the Nexus 1250/1252exactly as shown. For proper operation, the voltage connection mu...

Page 48 - : Isolating a CT Connection Reversal; Or, go to the Phasors screen of the Communicator EXT software (see; EIG Recommendations; WA; DO NOT; shorting block on the secondary of the CT.

Electro Industries/GaugeTech Doc # E107706 V1.2 5 4-2 Q It is important to maintain the polarity of the CT circuit when connecting to the Nexus. If thepolarity is reversed, the Nexus will not provide accurate readings. CT polarities are dependent uponcorrect connection of CT leads and the direction ...

Page 49 - Externally fuse the power supply with a 5 Amp fuse.; Control Power

Electro Industries/GaugeTech Doc # E107706 V1.2 5 4-3 Q Do not ground the unit through the negative of the DC supply. Separate grounding is required. Q Externally fuse the power supply with a 5 Amp fuse. 4.8: Wiring Diagrams Q Choose the diagram that best suits your application. Diagrams appear on t...

Page 59 - Chapter 5

Figure 5.1: Communication Overview e Electro Industries/GaugeTech Doc # E107706 V1.25 5-1 Chapter 5 Communication Wiring 5.1: Communication Overview RS-232 communication is used to connect a single Nexus 1250/1252 Meter with another device,such as a computer, RTU or PLC. The link is viable for a dis...

Page 60 - PC

e Electro Industries/GaugeTech Doc # E107706 V1.25 5-2 RJ-11 Telephone Line allows a Nexus Meter with the Internal Modem Option to communicate witha PC. No other hardware is necessary for this easy-to-use connection. The Nexus 1250/1252 Meterwith the Internal Modem Option can connect via RS-485 to o...

Page 61 - over Ethernet; Daisy Chain

e Electro Industries/GaugeTech Doc # E107706 V1.25 5-3 RJ-45 Network Connection allows a Nexus Meter with the Internal Network Option to communicate with multiple PC’s concurrently. No other hardware is necessary for this easy-to-useconnection. The Nexus Meter with the Internal Network Option can co...

Page 62 - Modem/Ethernet Gateway; Nexus P40N External Display; You must also connect the shield to

– – + + G A(+) B(-) S - V + A(+) B(-) S - V + + V - S B(-) A(+) + V - S B(-) A(+) + V - S B(-) A(+) + V - S B(-) A(+) 8 7 6 5 4 3 2 1 C - + Port 1 RS-232 or RS-485 (Set) RS-232 RS-485 Port 2 Normally Slave Modem/Ethernet Gateway High Speed Inputs IRIG-B RS-485 Master Unicom or Modem Manager Nexus P4...

Page 63 - Nexus Meter Port 1; Voltage terminals for power connections; connect these pins to devices that receive power from

+ V - S B(-) A(+) e Electro Industries/GaugeTech Doc # E107706 V1.25 5-5 Figure 5.5: Nexus Port 1—RS-232/RS-485 Communication Switch set for RS-232 communication RS-232 RS-485 5 4 3 2 1 9 8 7 6 RS-232 Port Pin #2=TransmitPin #3=ReceivePin #5=Ground RS-485 Port (see Section 5.3 for details) Nexus Met...

Page 64 - Shield; next device

e Electro Industries/GaugeTech Doc # E107706 V1.25 5-6 For All RS-485 Connections: Use a shielded twisted pair cable 22 AWG (0.33 mm 2 ) or larger, grounding the shield at one end only. Establish point-to-point configurations for each device on a RS-485 bus: Connect (+) terminals to(+) terminals; co...

Page 65 - Incorrect Connection: “T”; Figure 5.7: Incorrect “T” and “Star” Topologies; Incorrect Connection: “Star”; “Star” Connection Incorrect!

Electro Industries/GaugeTech Doc # E107706 V1.25 5-7 Incorrect Connection: “T” Figure 5.7: 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 causeinterference problems. RS-485...

Page 66 - : RS-4485 Connection—Nexus Meter to a Computer or PLC; You; must; to a PC; of this

Electro Industries/GaugeTech Doc # E107706 V1.25 5-8 5.4: RS-4485 Connection—Nexus Meter to a Computer or PLC Use any Port on the Nexus 1250/1252. If you use Port 1, set the selector switch beneath the port toRS-485 (see Figure 5.3). The link using RS-485 is viable for up to 4000 feet (1219 meters)....

Page 69 - Communicator EXT; Nexus Meter Port 3; Top

Nexus P40N, P41N or P43NDisplay, Back View Electro Industries/GaugeTech Doc # E107706 V1.25 5-11 5.8: RS-4485 Connection—Nexus Meter to the Nexus P40N External Display Insert one end of the supplied RS-485 cable into Port 3 of the Nexus 1250/1252 Meter. Port 3 is factory-set to match the Nexus Displ...

Page 71 - : use to connect to another module’s female RS-485 side port.; Male RS-485 Side Port; to another module’s male RS-485 side port.; Female RS-485 Side Port

Electro Industries/GaugeTech Doc # E107706 V1.25 5-13 5.10: Communication Ports on the Nexus I/O Modules Female RS-485 Side Port : use to connect to another module’s female RS-485 side port. Male RS-485 Side Port : use to connect to the Nexus Meter’s Port 4 (see section 5.8) or to connect to another...

Page 72 - Male Side Port on Nexus I/O Module

Electro Industries/GaugeTech Doc # E107706 V1.25 5-14 5.11: RS-4485 Connection—Nexus Meter to Nexus I/O Modules Six feet of RS-485 cable harness is supplied. Insert one end of the cable into Port 4 of the Nexus1250/1252 Meter. Insert the other end of the cable into the I/O module’s female RS-485 sid...

Page 73 - : Steps to Determine Power Needed; Add together the VA Ratings for I/Os and Displays in use.; Communicator EXT User; I/O MODULES’ FACTORY SETTINGS AND VA RATINGS

Electro Industries/GaugeTech Doc # E107706 V1.25 5-15 5.12: Steps to Determine Power Needed • Available power for All Ports of the Nexus 1250/1252 is 12 VA. • Refer to the table below to determine the VA Ratings for I/O modules and displays. • Add together the VA Ratings for I/Os and Displays in use...

Page 74 - Figure 5.14: Linking Multiple Nexus Devices in Series; : Linking Multiple Nexus Devices in Series; must be assigned a unique address

Electro Industries/GaugeTech Doc # E107706 V1.25 5-16 Figure 5.14: Linking Multiple Nexus Devices in Series Nexus RS-485 Port Nexus RS-485 Port RS-485 to RS-232 Converter (RS-485 Master) + V - S B(-) A(+) + V - S B(-) A(+) GND TX- RX- TX+ RX+ R Up to 31 Nexus 1250/1252 Meters Maximum 5.14: Linking M...

Page 75 - : Networking Groups of Nexus Meters

Electro Industries/GaugeTech Doc # E107706 V1.25 5-17 Nexus Nexus Nexus Nexus Nexus Nexus Nexus Nexus Nexus Nexus Maximum 31 Nexus 1250/1252 Meters, RS-485 Maximum 31 Nexus Meters, RS-485 Maximum 31 Repeaters Figure 5.15: Networking Groups of Nexus Meters 5.15: Networking Groups of Nexus Meters You ...

Page 76 - EIG recommends using; Remote Connection—RS-232

Electro Industries/GaugeTech Doc # E107706 V1.25 5-18 Telephone Line Remote Modem NULL Modem Adapter (Required if 232/485 Converter does not support DTE/DCE reconfigura tion) RS- Originate Modem RS-232 to RS-485 Converter (Modem Manager Recommended) Nexus 1250/1252 Meter PC at office Figure 5.16: Re...

Page 77 - Figure 5.17: Remote Connections with Internal Modem Option

Electro Industries/GaugeTech Doc # E107706 V1.25 5-19 Use RJ-11 Telephone Lines when devices are at great distances. Connections are simple, requiringno additional hardware. RJ-11 RS-485 Figure 5.17: Remote Connections with Internal Modem Option PC Originate Modem(or Internal to PC) Daisy Chain Stan...

Page 78 - Network; Figure 5.18: Remote Connections with Internal Network Option

Electro Industries/GaugeTech Doc # E107706 V1.25 5-20 Or, use RJ-45 Network Connection when devices are at great distances. Connections are simple,requiring no additional hardware. MODBUS/TCP over Ethernet 10/100BaseT or 10BaseT RJ-45 Network Daisy Chain MODBUS/RTU RS-485 Figure 5.18: Remote Connect...

Page 79 - Pins at Null Modem Female End

Electro Industries/GaugeTech Doc # E107706 V1.25 5-21 5.17: Remote Communication—RS-2232 EIG recommends using RS-485 wiring with a Modem Manager. See section 5.13. For RS-232 communication, use Port 1. Set the selector switch under the port to RS-232 (Fig. 5.3). Use an RS-232 serial extension cable ...

Page 80 - : Programming Modems for Remote Communication; If you are; not

Electro Industries/GaugeTech Doc # E107706 V1.25 5-22 5.19: Programming Modems for Remote Communication When a modem speaks to most RS-485 or RS-232-based devices, it must be programmed for the communication to work. This task is often quite complicated because modems are quirky when talkingto remot...

Page 81 - Up Up Down Down Up Up Up Down; Optional 150V Max for wet contacts; The Nexus High Speed Inputs can be used in many ways:; Figure 5.20: High Speed Inputs Connection

Electro Industries/GaugeTech Doc # E107706 V1.25 5-23 5.20: 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 S...

Page 82 - : Five Modes of Time Synchronization; approximately 1 minute per month.; Modbus Commands Time Synchronization:; The meter uses Serial Modbus-Based Commands; DNP Line Synchronization:; The meter uses DNP Protocol Commands to change the date and

Electro Industries/GaugeTech Doc #: E107706 V1.25 5-24 5.22: Five Modes of Time Synchronization The Nexus meter offers up to five modes of Time Synchronization, depending on options selected atthe time of ordering. 1. Internal Crystal: The Default Time Constant is an Internal Crystal. The crystal is...

Page 83 - B Connections; Signal; GPS; Click Time Settings. Set the Time Zone and Daylight Savings (Select; AutoDST; or; Enable; GPS does not supply the YEAR

Electro Industries/GaugeTech Doc # E107706 V1.25 5-25 + + - Nexus IRIG-B Port 5.23: IRIG-B B Connections IRIG-B is a standard time code format that synchronizes event timestamping to within 1 millisecond.An IRIG-B signal-generating device connected to the GPS satellite system will synchronize Nexus1...

Page 85 - Master; for this; Figure 6.1: Nexus P40N LED External Display

Chapter 6 Using the Nexus External Displays 6.1: Overview Q Electro Industries offers four external displays for use with the Nexus 1250/1252. The P40N, P41Nand P43N are LED displays that provide easy-to-use access to the information stored in the Nexus1250/1252. The P60N is our Touch Screen Display...

Page 89 - : Navigational Map of Dynamic Readings Mode; Use LEFT/RIGHT arrow keys to navigate Readings

1 Second Volts AN,BN,CN Maximum Volts AN,BN,CN Maximum Volts AB,BC,CA Minimum Volts AB,BC,CA Minimum Volts AN,BN,CN %THD Volts AN,BN,CN Max %THD Volts AN,BN,CN Min %THD Volts AN,BN,CN Return to First Reading Return to First Reading Return to First Reading Return to First Reading Return to First Read...

Page 90 - Energy Manager User Manual; Group 5: Firmware Versions and Serial Numbers

6.5: Nexus Information Mode Q Use the MODE button to access the Nexus Information Mode from other Modes. Use the UP/DOWN arrows to navigate from Group to Group within this Mode. See section 6.6 for a navigational map of the Nexus Information Mode. Q Group 1: Device Time • Meter Time Q Group 2: Commu...

Page 91 - Readings; : Navigational Map of Nexus Information Mode; Use UP/DOWN arrows to scroll between groups.

Meter Time Display Primary/Secondary CT Ratio PT Ratio Serial # Display, Serial # Monitor Boot Display, DSP, Comm Run-time Display, DSP, Comm G r o u p s Readings Return To First Reading Return To First Reading 6.6: Navigational Map of Nexus Information Mode Q Use UP/DOWN arrows to scroll between gr...

Page 93 - : Navigational Map of Display Features Mode

Reset Max/Min Reset Energy Communication Protocol Baud Rate/Address EIG Use Only EIG Use Only Display Scroll On/Off G r o u p s 6.8: Navigational Map of Display Features Mode Q Use UP/DOWN arrows to scroll between groups. Electro Industries/GaugeTech Doc # E107706 V1.2 5 6-9 Lamp Test

Page 94 - : Nexus P60N Touch Screen External Display

6.9: Nexus P60N Touch Screen External Display Q The P60N Touch Screen External Display is ready to use upon power-up. Touching the “buttons” atthe top of the screen will take you to the Groups of Readings listed below. With the “buttons” at the bottom of the screen, you can use the touch screen to r...

Page 100 - Touch; OK; to refresh screen (go back to original; LCD SCREEN SETTINGS

Q LOG STATUS: Logging Statistics An Overview of the Logs for the Primary Meter. The Number of Records and Memory Used are listed for each log. Q RESET: Meter Reset Commands. WARNING! RESETS cause data to be lost. Touch the window for the Reset you want to perform.Don’t Reset changes to Reset. Touch ...

Page 102 - : Navigational Map for P60N Touch Screen External Display

6.10: Navigational Map for P60N Touch Screen External Display Electro Industries/GaugeTech Doc # E107706 V1.2 5 6-18

Page 103 - Chapter 7; The Edison Electric Institute’s

Electro Industries/GaugeTech Doc # E107706 V1.2 5 7-1 Chapter 7 Transformer Loss Compensation 7.1: Introduction Q The Edison Electric Institute’s Handbook for Electricity Metering, Ninth Edition defines Loss Compensation as: A means for correcting the reading of a meter when the metering point and p...

Page 104 - Total Secondary Watt Loss =

Electro Industries/GaugeTech Doc # E107706 V1.2 5 7-2 Q A single meter cannot measure the losses in a transformer or transmission line directly. It can however, include computational corrections to calculate the losses and add or subtract those losses tothe power flow measured at the meter location....

Page 105 - Performs Bidirectional Loss Compensation.

Electro Industries/GaugeTech Doc # E107706 V1.2 5 7-3 • Performs Bidirectional Loss Compensation. • Requires no additional wiring; the compensation occurs internally. • Imposes no additional electrical burden when performing Loss Compensation. Q Loss Compensation is applied to 1 second per phase Wat...

Page 106 - : Loss Compensation in Three Element Installations; TLC Calculator

Electro Industries/GaugeTech Doc # E107706 V1.2 5 7-4 7.2.1: Loss Compensation in Three Element Installations Q Loss compensation is based on the loss and impedance values provided on the transformer manufacturer’s test report. A typical test report will include at least the following information: •...

Page 109 - Meter Base kVA

Electro Industries/GaugeTech Doc # E107706 V1.2 5 7-7 Full-Load Loss Watts (kW) = 1-Phase Kw Load Loss = ______________ Full-Load Loss VA (kVA) = (%Impedance) * (1-Phase kVA Self-Cooled Rating) / 100 = (______________) * (________________) / 100 = _______________ kVA Full-Load Loss VAR (kVAR) = SQRT...

Page 111 - Chapter 8; schedule

Electro Industries/GaugeTech Doc # E107706 V1.2 5 8-1 Chapter 8 Nexus Time-o of-U Use 8.1: Introduction Q A Time-of-Use (TOU) usage structure takes into account the quantity of energy used and the time at which it was consumed. The Nexus 1250/1252 TOU function, available with the CommunicatorEXT sof...

Page 112 - Nexus Communicator User Manual

Electro Industries/GaugeTech Doc # E107706 V1.2 5 8-2 8.3: TOU Prior Season and Month Q The Nexus 1250/1252 Monitor stores accumulations for the prior season and the prior month. Whenthe end of a billing period is reached, the current season or month becomes stored as the prior. Theregisters are the...

Page 113 - Chapter 9; All Nexus External I/O modules have the following components:; : used for functions specific to the type of module; size and pin configuration vary; Press and hold for three seconds to reset the module’s; LEDs; : used to secure one or more modules to a flat surface.

Electro Industries/GaugeTech Doc # E107706 V1.2 5 9-1 Chapter 9 Nexus External I/O Modules 9.1: Hardware Overview Q All Nexus External I/O modules have the following components: •• Female RS-485 Side Port : use to connect to another module’s male RS-485 side port. •• Male RS-485 Side Port : use to c...

Page 114 - Four Analog Outputs

Electro Industries/GaugeTech Doc E107706 V1.2 5 9-2 9.1.1: Port Overview Q All Electro Industries I/O Modules have ports through which they interface with other devices. The port configurations are variations of the four types shown below. Four Analog Outputs Eight Analog Outputs (0-11mA and 4-220mA...

Page 115 - Nexus

Electro Industries/GaugeTech Doc # E107706 V1.2 5 9-3 9.2: Installing Nexus External I/O Modules Q I/O modules must use the Nexus 1250/1252 Meter’s Port 3 or 4. Six feet of RS-485 cable harness is supplied. Attach one end of the cable to the port (connectors may not be supplied); insert the otherend...

Page 116 - You must also do the following:; PSIO Power Source; SIDE LABEL

Electro Industries/GaugeTech Doc # E107706 V1.2 5 9-4 9.2.1: Power Source for I/O Modules Q The Nexus 1250/1252 will supply power to a limited number (3) I/O MODULES. For more, youmust use an external power source , such as the EIG PSIO (12V). Refer to sections 5.12 and 5.13 to Determine Power Neede...

Page 118 - modules stay securely connected.; : Factory Settings and Reset Button; Reset Button; Modbus Communicating I/O Modules User Manual; Module; Latching Relay Outputs

Electro Industries/GaugeTech Doc # E107706 V1.2 5 9-6 NOTE: The PB1 can also be used for a Low Voltage Power Supply. It must be mounted separately. 5. Once you have combined all the I/O modules together for the group, fasten tightly. This final tightening will lock the whole group together as a unit...

Page 119 - : Analog Transducer Signal Output Modules; supports up to 2 Modules

Electro Industries/GaugeTech Doc # E107706 V1.2 5 9-7 9.5: Analog Transducer Signal Output Modules 9.5.1: Overview Q The Analog Transducer Signal Output Modules (0±1mA or 4–20mA) are available in either a 4- or8-channel configuration. Maximum registers per request, read or write, is 17 registers. Q ...

Page 120 - Modbus

Electro Industries/GaugeTech Doc # E107706 V1.2 5 9-8 Q The Modbus Map for the Analog Output Module (and operating details) can be found in the Modbus Communicating I/O Modules Manual. 9.5.2: Normal Mode Q Normal Mode is the same for the 0-1mA and the 4-20mA Analog Output Modules except for thenumbe...

Page 121 - Programmable

Electro Industries/GaugeTech Doc # E107706 V1.2 5 9-9 Default Settings (Reset Button) 9.6: Analog Input Modules Analog Input Modules Specifications Model Numbers 8AI1: 8-Channel Analog Input, 0±1mA 8AI2: 8-Channel Analog Input, 0±20mA 8AI3: 8-Channel Analog Input, 0±5Vdc 8AI4: 8-Channel Analog Input...

Page 123 - RO1: 4 Latching Relay Outputs; Transmit Delay Time: 0

Electro Industries/GaugeTech Doc # E107706 V1.2 5 9-11 9.7: Digital Dry Contact Relay Output (Form C) Module Digital Dry Contact Relay Output (Form C) Module Specifications Model Number Communication Power Requirement Operating Temperature Maximum Load Impedance 4RO1: 4 Latching Relay Outputs RS-485...

Page 125 - Modbus Communicating

Electro Industries/GaugeTech Doc # E107706 V1.2 5 9-13 9.8: Digital Solid State Pulse Output (KYZ) Module Digital Solid State Pulse Output (KYZ) Module Specifications Model Number Communication Power Requirement Operating Temperature Memory Factory Settings Default Settings (Reset Button) 4PO1 RS-48...

Page 127 - Maximum registers per request, read or write, is 4 registers.orm; supports up to 4 Modules

Electro Industries/GaugeTech Doc # E107706 V1.2 5 9-15 9.9.1: Overview Q The Digital Status Input Module is used for either additional status detect or for accumulating pulsesfrom external equipment, such as power meters, water meters, etc. Q Nexus 1250/1252 Unit supplies power for up to 4 connected...

Page 128 - Digital Dry Contact Relay Outputs (Multiple modules can be used.)

Electro Industries/GaugeTech Doc # E107706 V1.2 5 9-16 9.9.3: Normal Mode Q The device is polling the inputs at 100Hz (once every 10 msec), debouncing the inputs and incrementing the Transition Accumulators for each channel as appropriate. The inputs are represented by Channel 1 in the LSB through C...

Page 129 - Nexus Monitor with Internal Modem Option; PLUS; the cabability of connecting to a PC via standard phone line. No; Figure 10.1: Nexus with Internal Modem Option

Electro Industries/GaugeTech Doc # E107706 V1.2 5 10-1 Chapter 10 Nexus Monitor with Internal Modem Option 10.1: Hardware Overview Q The Nexus 1250/1252 Monitor with the INP2, Internal Modem Option, has all the components of thestandard Nexus Monitor PLUS the cabability of connecting to a PC via sta...

Page 130 - Communicator EXT Software Manual

Electro Industries/GaugeTech Doc # E107706 V1.2 5 10-2 10.2: Hardware Connection Q Use RJ-11 Standard Telephone Line to connect with an INP2 Option Nexus. The RJ-11 line is inserted into the RJ-11 Port on the face of the Nexus 1250/1252 with Internal Modem Option. The connection using RJ-11 into the...

Page 131 - Nexus Meter with Internal Network Option; the cabability of connecting to a multiple PC’s via Modbus/TCP over; Figure 11.1: Nexus with Internal Network Option

Electro Industries/GaugeTech Doc # E107706 V1.2 5 11-1 Chapter 11 Nexus Meter with Internal Network Option 11.1: Hardware Overview Q The Nexus 1250/1252 Meter with the Internal Network Option has all the components of the standard Nexus Meter PLUS the cabability of connecting to a multiple PC’s via ...

Page 133 - Ethernet Gateway

Electro Industries/GaugeTech Doc # E107706 V1.2 5 11-3 11.2: Hardware Connection Q Use Standard RJ-45 10/100BaseT cable to connect with the Nexus 1250/1252. The RJ-45 line is inserted into the RJ-45 Port on the face of the Nexus with Internal Network Option. Q Set the IP Address using the following ...

Page 135 - Flicker; Block 1; level. This simulates the behavior of a lamp.; Block 3

Chapter 12 Flicker 12.1: Overview Flicker is the sensation that is experienced by the human visual system when it is subjected tochanges occurring in the illumination intensity of light sources. The primary effects of flicker areheadaches, irritability and sometimes epilepsy. IEC 61000-4-15 and form...

Page 137 - Measurement Procedure; Data available; Figure 12.1: Simulation of Eye Brain Response

Measurement Procedure 1. Original Signal with amplitude variations.2. Square demodulator.3. Weighted filter. 4. Low pass filter 1 st order. 5. Statistical computing. Q Data available Pst, Pst Max, Pst Min values for long term recordingPlt, Plt Max, Plt Min values for long term recording Figure 12.1:...

Page 138 - Main screen

• Select a Pst time range from 1 to 10 minutes. The standard measurement period is nominally 10minutes. • Select a Plt time range from 1 to 240 minutes. The standard measurement is nominally 12 Pstperiods (120 minutes). Plt time must always be equal to or great than and a multiple of Pst time.This i...

Page 140 - Current Pst values for Va, Vb and Vc and the time of computation.; Long Term Readings; Current Plt values for Va, Vb and Vc and the time of computation.

Q Short Term Readings Click on the Short Term tab to access the screen containing three groups of Pst readings. Pst Readings Displayed • Current Pst values for Va, Vb and Vc and the time of computation. • Current Pst Max values for Va, Vb and Vc since the last reset and the time of the last reset. •...

Page 143 - Appendix A; A.2: Excel Spreadsheet with Example Numbers

Electro Industries/GaugeTech Doc # E107706 V1.2 5 A-1 Appendix A Transformer Loss Compensation Excel Spreadsheet with Examples A.1: Calculating Values Q Transformer Loss Compensation is discussed in Chapter 7 of this manual. Values for three elementinstallations can be calculated in two ways: • Clic...

Page 149 - Electro Industries/Gauge Tech; Glossary; Relating to a system of numbers having 2 as its base (digits 0 and 1).

e Electro Industries/Gauge Tech Doc # E107706 V1.25 Glossary-1 Glossary Glossary 0.1 Second Values: These values are the RMS values of the indicated quantity as calculated after approximately 50 milliseconds (3 cycles) of sampling. 1 Second Values: These values are the RMS values of the indicated qu...