Nexus 1250 - Table of Contents

Doc# E107706 TOC-1
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Table of Contents
Table of Contents
Customer Service and Support ii
Product Warranty ii
Limitation of Warranty ii
Statement of Calibration iii
Disclaimer iii
About Electro Industries/GaugeTech iv
1:Three-Phase Power Measurement 1-1
1.1: Three-Phase System Configurations 1-1
1.1.1: Wye Connection 1-1
1.1.2: Delta Connection 1-4
1.1.3: Blondell’s Theorem and Three-Phase Measurement 1-6
1.2: Power, Energy and Demand 1-8
1.3: Reactive Energy and Power Factor 1-12
1.4: Harmonic Distortion 1-14
1.5: Power Quality 1-17
2: Meter Overview 2-1
2.1: The Nexus® System 2-1
2.2: DNP V.3.00 Level 1 and 2 2-2
2.3: Flicker 2-3
2.4: INP2 Internal Modem with Dial-in/Dial-out Option 2-3
2.4.1: Hardware Overview 2-3
2.4.2: Dial-In Function 2-4
2.4.3: Dial-Out Function 2-4
2.5: Total Web Solutions 2-4
2.5.1: Hardware Overview 2-5
2.5.2: Hardware Connection 2-5
2.5.3: Software Overview 2-5
2.5.4: Network Settings 2-6
2.6: Measurements and Calculations 2-8
2.7: Demand Integrators 2-12
2.8: Nexus® External I/O Modules (Optional) 2-15
2.9: Nexus® 1250/1252 Meter Specifications 2-17
2.10: Nexus® P40N+, P41N+, P43N+ LED External Display Specifications 2-18
2.11: Upgrading the Nexus® 1252 Meter’s V-Switch
TM
Key 2-19
3: Hardware Installation 3-1
3.1: Mounting the Nexus® 1250/1252 Meter 3-1
3.2: Mounting the Nexus® LED External Displays 3-2
3.3: Mounting the Nexus® External I/O Modules 3-5
4: Electrical Installation 4-1
4.1: Considerations When Installing Meters 4-1
4.2: Wiring the Monitored Inputs and Voltages 4-5
4.3: Fusing the Voltage Connections 4-5
4.4: Wiring the Monitored Inputs - VRef 4-5
4.5: Wiring the Monitored Inputs - VAux 4-5
4.6: Wiring the Monitored Inputs - Currents 4-5
4.7: Isolating a CT Connection Reversal 4-7
4.8: Instrument Power Connections 4-7