Nexus 1500+
Nexus 1450
Nexus 1252
Nexus 1262
Nexus 1272
 nexus-1500+nexus-1252nexus-1252nexus-1262nexus-1272
Typical Application Uses     
 Utility and Industrial Switchgear – Power Quality MeasurementUtility and Industrial Switchgear – Power Quality MeasurementUtility and Industrial Switchgear – Power Quality MeasurementUtility and Industrial Revenue MeteringUtility and Industrial Revenue Metering
Basic Measurements and Accuracy     
Multifunction Metering (V/A/W/Frequency, etc.)
Accuracy Class (ANSI C12.20)0.2 CL0.1 CL0.2 CL0.2 CL0.2 CL
Stated Energy Accuracy %0.060.060.060.060.06
Number of 3 phase circuits11111
Frequency Range(45 to 69.9) Hz(20 to 500) Hz(20 to 65) Hz(45 to 75) Hz(45 to 75) Hz
Calibration Method     
AccuMeasure™ Auto-Calibration  
Constant Calibration™ Technology    
Multi-Gain™ Sensing Technology    
Advanced Revenue Measurements     
CT/PT Compensation
Transformer Loss Compensation
Time of UsePerpetual TOUPerpetual TOU20 year TOU calendar20 year TOU calendar20 year TOU calendar
Accuracy Test Pulse
Accuracy Test Mode  
Logging     
Non-volatile Random-access MemoryUp to 4 GBUp to 4 GBUp to 4 MBUp to 2 MBUp to 4 MB
Historical logs88222
Maximum Length of Logging 4 Values at 15 Minute Intervals259 Days341 Days560 Days480 Days560 Days
Limit Log
I/O Log
PQ Log
System Events Log
ITIC/CBEMA Log 
Max Waveform Sampling800,000+ samples/cycle1,024 samples/cycle512 samples/cycle512 samples/cycle512 samples/cycle
Max Stored Waveform Events (before FIFO)
*Events=>1 Second
19,0008,19695 95
Power Quality     
Programmable Alarm Limits
THD
TDD
K-Factor
Harmonic Magnitude
Flicker 
IEC 61000 ReportingClass A Edition 3Class A Edition 3   
Customizable EN 51060 Report    
kHz Transient Recording 
mHz Transient Recording    
Communication Options (S= standard, O=optional)     
Optical Port/IrDA Port(1-S)  (1-S)(1-S)
RS485(2-0)(4-S)(4-S)(2-S)(2-S)
RS232 (1-S)(1-S)  
RJ45 Ethernet(1-S, 1-0)(1-S)(1-S)(1-0)(1-0)
USB(1-S) with P40N+ with P40N+  
Fiber Optic(1-0)(1-S)   
WiFi     
Modem  (1-0)(1-0)(1-0)
Max. No. of Communication Ports66455
Protocols     
Modbus RTU/ASCII
Modbus TCP/IP
Simultaneous Modbus Sockets3228121212
DNP3 
IEC 61850    
GOOSE    
BACnet     
SNMP (simple network management protocol)    
SMTP (simple mail transfer protocol) Email on Alarm
Display     
Integrated  
External   
Programmable   
I/O     
High Speed Digital Inputs(8-S)(8-S)(8-S)(8-S)(8-S)
Digital Inputs(16, 32-O)(8, 16-O)(8, 16-O)(8, 16-O)(8, 16-O)
Relay Outputs(6,12-O)(4, 8, 12, 16-O)(4,8-O)(4,8-O)(4,8-O)
KYZ (Pulse) Outputs(4-O internal card)+(4,8,2, 16-O)(2-S)+(4, 8, 12, 16-O)(4, 8-O)v(3-S)+(4, 8-O)(3-S)+(4, 8-O)
Analog Outputs(4,8,12,16, 24, 32-O)(4, 8, 12, 16, 24, 32-O)(4, 8, 12, 16-O)(4, 8, 12, 16-O)(4, 8, 12, 16-O)
Analog Inputs(8, 16, 24, 32-O)(8, 16, 24, 32-O)(8, 16-O)(8, 16-O)(8, 12, 16-O)
Time Synchronization     
IRIG-B
NTP   
Line Frequency Sync
End of Interval Pulse
Meter Security     
Password Control
Multi Level User Passwords
Sealing Switch/Mechanism
Advanced Cyber Security   
Meter Physical Form     
Socket Form   
Switchboard   
Panel meter  
Multi-circuit     
Prewired Enclosure    
Transducer