Data Sheet for Product

Page 2 of 8
Siemens Industry, Inc.
Features (Continued)
• User-configurable alarm with isolated output
• Data updates occur every 1.0 seconds
• Patented PhaseChek™ technology confirms
proper CT orientation
Siemens MD-3 HD Model Power Meters use
interchangeable CT options such as split-core or
flexible Rogowski-style CTs. The meters have
embedded Rogowski Coil CT amplifier/integrator
circuitry, so there is no need to provide external power
to the CTs.
Communications interface to the meters is through an
RS-485 serial connection using BACnet MS/TP
(default) or Modbus RTU protocol. Advanced
configuration can be completed by using ViewPoint™
software.
The MD-3 HD Model Power Meter has an integrated
Ethernet port which supports BACnet IP or Modbus
TCP in addition to the RS-485 communication options
noted above. This model also provides a new backlit
display.
Up to 20 meters can be connected to a single RS-485
network for monitoring and recording power usage at
multiple locations within a single site.
Applications
• Tenant Submetering
• Bi-directional Metering
• Data Center monitoring
• Commercial
• Retail
• Industrial Power Reporting
Specifications
Technical
Service types Single Phase, Three Phase-Four Wire (WYE), Three
Phase-Three Wire (Delta)
Power From L1 Phase to L2 Phase, 90 to 600 Vac RMS
CAT III 50/60 Hz, 500 mA maximum
AC Protection 0.5A internal fuse protection. 200 KA interrupt
3 Voltage channels 80-346 Volts AC Line-to-Neutral, 600V Line-to-Line,
CAT III
3 Current channels 0.525 Vac max, 333 mV CTs, 0 to 4,000+ Amps,
depending on current transducer
Maximum current input 150% of current transducer rating (mv CTs) to
maintain accuracy. Measure up to 4000 Amps with
RoCoil CTs.
Measurement rating True RMS using high-speed digital signal
processing (DSP)
Line frequency 50/60 Hz
Sampling Continuous 1.8 kHz (no blind cycles)
Parameter update rate 1.0 second
Measurements Volts, Amps, kW, kVAR, kVA, aPF, dPF, kW
demand, kVA demand, Import (Received) kWh,
Export (Delivered) kWh, Net kWh, Import (Received)
kVAh, Export (Delivered) kVAh, Net kVAh, Import
(Received) kVARh, Export (Delivered) kVARh, Net
kVARh, THD, Theta, Frequency. All parameters for
each phase and element total.
Accuracy 0.2% ANSI C12.20-2015 Class 0.2 (3rd party
certification pending)
Resolution 32-bit floating point
Display 2 × 16-character display with tri-color backlight