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1252
Nexus 1252 Manuals
Manuals and User Guides for Nexus 1252. We have
2
Nexus 1252 manuals available for free PDF download: Installation & Operation Manual, Quick Start Manual
Nexus 1252 Installation & Operation Manual (186 pages)
Power meter and Power quality recorder
Brand:
Nexus
| Category:
Measuring Instruments
| Size: 4 MB
Table of Contents
Product Warranty
5
Safety Symbols
6
Disclaimer
6
Table of Contents
9
1 :Three-Phase Power Measurement
13
Three-Phase System Configurations
13
1: Wye Connection
13
2: Delta Connection
16
3: Blondell's Theorem and Three-Phase Measurement
18
Power, Energy and Demand
20
Reactive Energy and Power Factor
24
Harmonic Distortion
26
Power Quality
29
2 : Meter Overview
31
The Nexus System
31
DNP V.3.00 Level 1 and
32
Flicker
33
INP2 Internal Modem with Dial-In/Dial-Out Option
33
1: Hardware Overview
33
2: Dial-In Function
34
3: Dial-Out Function
34
Total Web Solutions
34
1: Hardware Overview
35
2: Hardware Connection
35
3: Software Overview
35
4: Network Settings
36
Measurements and Calculations
38
Demand Integrators
42
Nexus® External I/O Modules (Optional)
45
Nexus® 1250/1252 Meter Specifications
47
Nexus P40N+, P41N+, P43N+ LED External Display Specifications
48
Upgrading the Nexus® 1252 Meter's V-Switch
49
TM Key
49
3 : Hardware Installation
51
Mounting the Nexus 1250/1252 Meter
51
Mounting the Nexus External I/O Modules
55
4 : Electrical Installation
57
Considerations When Installing Meters
57
Wiring the Monitored Inputs and Voltages
61
Fusing the Voltage Connections
61
Wiring the Monitored Inputs - Vref
61
Wiring the Monitored Inputs - Vaux
61
Wiring the Monitored Inputs - Currents
61
Isolating a CT Connection Reversal
63
Instrument Power Connections
63
Wiring Diagrams
64
Extended Surge Protection for Substation Instrumentation
74
5 : Communication Wiring
75
Communication Overview
75
RS232 Connection (Port 1)
78
RS485 Communication
78
1: RS485 Connection
81
2: Connection to an RS485 Master (Unicom or Modem Manager)
81
3: Using the Unicom 2500
82
4: RS485 Connection to the Nexus® P40N+ External Display
83
RJ11 (Telephone Line) Connection-Nexus® Meter with Internal Modem Option (INP2) to a PC
84
RJ45 Connection-Nexus® Meter with Internal Network Option (INP200) to Multiple Pcs - 10/100Baset
84
Communication Ports on the Nexus® I/O Modules
84
1: RS485 Connection-Nexus® Meter to Nexus® I/O Modules
85
2: Steps to Determine Power Needed
85
Linking Multiple Nexus® Meters in Series
87
Remote Communication Overview
88
1: Remote Communication-RS232
88
2: Remote Communication-RS485
89
3: Programming Modems for Remote Communication
89
1: Selected Modem Strings
91
High Speed Inputs Connection
91
IRIG-B Connections
92
Time Synchronization Alternatives
94
6 : Using the External Displays
97
Overview
97
Nexus® P40N/P40N+, P41N+ and P43N+ LED External Displays
97
1: Connect Multiple Displays
102
2: Nexus® P40N/P40N+ Display Modes
102
Dynamic Readings Mode
103
Navigation Map of Dynamic Readings Mode
107
Nexus® Information Mode
108
Navigation Map of Nexus® Information Mode
109
Display Features Mode
110
Navigation Map of Display Features Mode
112
7 : Transformer Loss Compensation
113
Introduction
113
Nexus® 1250/1252 Meter's Transformer Loss Compensation
116
1: Loss Compensation in Three Element Installations
117
1: Three-Element Loss Compensation Worksheet
118
8 : Time-Of-Use Function
125
Introduction
125
The Nexus® Meter's TOU Calendar
125
TOU Prior Season and Month
126
Updating, Retrieving and Replacing TOU Calendars
126
Daylight Savings and Demand
127
9 : External I/O Modules
129
Hardware Overview
129
1: Port Overview
130
I/O Module Installation
131
1: Power Source for I/O Modules
131
Using the PSIO with Multiple I/O Modules
132
1: Steps for Attaching Multiple I/O Modules
133
Factory Settings and Reset Button
135
Analog Transducer Signal Output Modules
136
1: Overview
136
2: Normal Mode
137
Analog Input Modules
138
1: Overview
138
2: Normal Mode
139
Digital Dry Contact Relay Output (Form C) Module
140
1: Overview
140
2: Communication
141
3: Normal Mode
141
Digital Solid State Pulse Output (KYZ) Module
142
1: Overview
142
2: Communication
143
3: Normal Mode
143
Digital Status Input Module
145
1: Overview
145
2: Communication
146
3: Normal Mode
146
10 : Meter with Internal Modem Option (INP2)
147
Hardware Overview
147
Hardware Connection
147
Dial-In Function
148
Dial-Out Function
148
11 : Meter with Internal Network Option (INP200)
151
Hardware Overview
151
Network Connection
152
12 : Flicker and Analysis
155
Overview
155
Theory of Operation
155
1: Summary
157
Flicker Setting (Nexus® 1250 Meter and 1252 V-1)
158
Flicker Polling Screen
160
Logging
164
Polling through a Communication Port
164
Log Viewer
164
Performance Notes
165
EN50160/IEC61000-4-30 Power Quality Compliance Analysis
166
(Nexus® 1252 Meter with V-2)
166
1: EN50160/IEC61000-4-30 Configuration
166
2: EN50160/IEC61000-4-30 Analysis
168
13 : Substation 19-Inch Rack Mount Assembly (Nexus 1252 Meter)
171
Overview
171
Features
171
Options
172
Dimensions
172
Installation
172
Wiring
173
Ordering Information
173
Glossary
175
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Nexus 1252 Quick Start Manual (8 pages)
Brand:
Nexus
| Category:
Measuring Instruments
| Size: 1 MB
Table of Contents
Mechanical Installation
2
Installing an External Display
2
Electrical Installation
3
Installing Optional Output Modules
3
Programming the Meter through Communicatorpqa Software
5
Program CT, PT Ratios
6
Program Communications Setting
6
Program Meter Time
8
Program Meter Name
8
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