High Performance Revenue Meter
· Meets 0.1% revenue accuracy (tested to 0.05%)
· Active energy: class 0.2S precision ANSI C12.20 class 10/20
· Time Of Use (TOU) tariffs
· Unique anti-vandalism & anti-tampering features
· Transformer/Line Compensation (TLC)
· PT/CT errors correction (up to 8 points)
Advanced Power Quality Analysis
· Power Quality Analysis according to IEC 61000-4-30 Class A
· Built-in EN50160 statistics & reports
· Auxiliary power supply for continuous recording major dips & interruptions
· Harmonics & Inter-harmonics according to IEC 61000-4-7
· Directional power harmonics and power factor phasors
· Flicker measurement according to IEC 61000-4-15
· Waveform recording, up to 1024 samples/cycle
Transient Recorder
· Records fast transients overvoltages >17 microseconds
· Transients measured relative to ground
· Measures up to 2 kV pulses
· Up to 50 amp fault currents (10xIn)
Event/Data Log
· Event statistics complimented by waveform recording
· Logging memory 16 Mb built-in
· Time Synchronization - IRIG-B or Ethernet (SNTP)
Alarm & Control Functions
· 16 programmable set points and hysteresis
· 2 standard digital inputs with 1 ms sample rate + 8 DI (optional module)
· 1 programmable relay output (KYZ relay output, form C) + 6 RO (optional module)
Communication
· Built-in infra-red port
· Ethernet (100Mb/s), USB & RS232/485
· Modbus Master/Slave mode
· IRIG-B & RS232/485
· GSM/GPRS (Class 10)
· Protocols
o Master/Slave Modbus Binary & ASCII
o Modbus RTU
o DNP 3.0
o TCP/IP
o IEC 61850 protocol
o IEC 62056-21/61
Optional Modules for EM920
· Transient module (sampling rate up to 1024 samples per cycle)
· Auxiliary Power Supply module
· Communication module (Ethernet, IRIG-B, RS232/485)
· 6 Relay Outputs module
· 8 Digital Inputs module
· 4 Analog Output module
