Bitronics PowerPlex II Automation Transducer

Setup and Sync in (Micro)seconds

One-Cycle RMS Updates and Dual 3-Phase Voltage Inputs for Generation and Synchronization Applications

The PowerPlex II (PPX II) is a new Automation Transducer built in the same package as the original PowerPlex, or with digital I/O added, in the M571 case. It is an Ethernet transducer with fast, 1-cycle updates that can be used in SCADA automation schemes and in synchronizing applications in conjunction with PLCs. It is an excellent choice as a replacement for the Bitronics M571 in non-recording applications. Two sets of three-phase voltages that allow direct connect for 600V ac systems are provided.

The PowerPlex II transducers are simple to set up and use, and provide the following features:


  • No need for PC software – Ethernet service port provides access to web server in the instrument so meters can be interfaced with just a web browser for viewing and configuration
  • Ethernet protocol support for DNP3, Modbus TCP, or IEC 61850
  • Built-in Ethernet switch allows pass-through from one device to another
  • An option for both standard secondary “optimal resolution” or primary units makes communications with SCADA/RTU more flexible
  • Optional display port and IRIG-B port
  • Optional configurable RS-232/RS-485 serial port


  • Full basic measurement set with demand and harmonic values plus phase angle, voltage differential and slip frequency used in synchronizing applications
  • 0.2% revenue accuracy
  • .001Hz accuracy
  • Updates every 1 cycle

Built for the Substation

  • Wide-range universal power supply
  • Rugged aluminum case
  • Reduce inventory cost as one model covers all wiring options
  • Easy to mount with compact transducer footprint


  • Synchronizing, voltage control, power factor control, and load shedding
  • Digital front-end to SCADA systems
  • Intelligent Electronic Device (IED) interfacing to RTUs and PLCs
  • Plant equipment, line, power & energy monitoring
  • Breaker status, rack-in, rack-out in switchgear


  • Operating temperature range -40° to 70°C, storage temperature -40° to 85°C
  • Humidity 0-95% non-condensing
  • Surge withstand to ANSI/IEEE C37.90.1: 2002
  • UL/CSA Recognized, File Number E164178, CE Marked


Standard chassis: 5.28” H x 5.60” W x 5.63” D – overall depth including handle is 5.75” D (134mm H x 142mm W x 143mm D – overall depth including handle is 146mm D). Wide chassis (with I/O and serial port): 5.2” H x 8.5” W x 5.9” D (132mm H x 216mm W x 150mm D).

Weight: Standard chassis: 2.3 lbs. (1.04 kg). Wide chassis (with I/O and serial port: 3.5 lbs. (1.59 kg).

Power Supply: 12 – 40V dc nominal, intended to connect to 12 and 24V batteries or 48-250V dc/55-240V ac with built in monitoring

Current Inputs: 5A nominal to maximum of 10A (2x overload)

Voltage Inputs: 600V ac nominal, 45-65Hz

Outputs: Dual RJ45 10BaseT/100BaseTX ports (Ethernet switch) for service port functions, Modbus or DNP3 TCP/IP support; IEC 61850 support optional display and IRIG-B ports

Digital Inputs: Optional 4 or 8; High speed, suitable for 1ms SOE

  • Nominal Input Range: 24V dc to 250V dc
  • Threshold Voltage: 15V dc +/-1V or 80V dc +/-5V (at 25C)
  • Input Resistance: 33kohm
  • Input De-bounce Time: Selectable, from 1 ms to 2 s

Digital Outputs: Optional 4

  • Tripping duty relay
  • Resistive: 30A
  • Continuous Carry: 5A
  • Break Inductive @48V dc: 700mA
  • Break Inductive @125V dc: 200mA
  • Output Operate Time (time from command by Host, does not include protocol delays:
    • Assert (Close time with “N.O.” jumper): 8ms
    • Release (Open time with “N.O.” jumper): 3ms

Isolation:  I/O Terminals to Case: 2000Vac, 1 min. I/O Terminals to Channel: 2000Vac, 1 min (channel 4 to other channels).

IP Address Identity Tool

The PPX II supports the Inverse Address Recognition Protocol (InARP), a software utility program that requests the IP address for a specific MAC address on an Ethernet network and can also scan for a range of MAC addresses and print the IP address for any devices which respond.

Available Measurements
Amps A, B, C, Residual
Average 3-Phas Amps
Average 3-Phase Volts (1 & 2)
Average Volts AN, BN, CN, AB, BC, CA (Bus 1)
Average (Max.) Volts AN, BN, CN, AB, BC, CA (Bus 1)
Average (Min.) Volts AN, BN, CN, AB, BC, CA (Bus 1)
Average Watts A, B, C, Total
Average (Max.) Watts A, B, C, Total
Average (Min.) Watts A, B, C, Total
Average VARs A, B, C, Total
Average (Max.) VARs A, B, C, Total
Average (Min.) VARs A, B, C, Total
Average VAs A, B, C, Total
Average (Max.)  VAs A, B, C, Total
Average (Min.) VAs A, B, C, Total
Class 0 Response Setup
CT Scale Factor
CT Scale Factor Divisor
Demand (Max.) Amps A, B, C, Residual
Demand (Max.) Fund. Amps A, B, C, Residual
Demand Amps A, B, C, Residual
Demand Fundamental Amps A, B, C, Residual
Displacement Power Factor A, B, C
Displacement Power Factor Total
Factory Version Hardware
Factory Version Software
Frequency (System)
Frequency Volts A, B, C (1 & 2)
Fund. Amps A, B, C, Residual
Fund. Volts AN, BN, CN, AB, BC, CA (1 & 2)
K-factor Amps A, B, C, Residual
Meter Type
Phase Angle Amps A, B, C
Phase Angle Volts A, B, C
Phase Angle Volts AB, BC, CA
Phase Angle Volts A 1-2, B 1-2, C 1-2
Power Factor A, B, C, Total
Protocol Version
PT Scale Factor
PT Scale Factor Divisor
Slip Frequency Volts A 1-2, B 1-2, C 1-2
Symmetrical Components Bus 1 & 2 Volts (Magnitude and Angle)
Symmetrical Componenets Current (Magnitude and Angle)
Tag Register
TDD Amps A, B, C, Residual
TDD Denominator A, B, C
THD Volts AN, BN, CN, AB, BC, CA
Unbalance Amps
Unbalance Volts (1 & 2)
Uncompensated VARs, Total
Uncompensated Watts, Total
VAR-Hrs Lag
VAR-Hrs Lead
VARs A, B, C, Total
VAs A, B, C, Total
Volts AN, BN, CN, AB, BC, CA (1 and 2)
Volts Aux
Watt-Hrs Net
Watt-Hrs Normal
Watt-Hrs Reverse
Watts A, B, C, Total

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