Powering Life for Modern Humanity

PowerSense-Series APT Multi-Function Power Metering/Sensing/Relay Panel

Stand Alone Low & Medium Voltage Revenue Grade Current Accuracy & Potential Transformer Power Metering Panel

   Panel Information

The APT PowerSense Multi-Function Power Metering Panel offers powerful high accuracy low & medium voltage sensing & revenue grade current sensing with ANSI C12.20 metering accuracy. Voltage & current test switches with optional test plugs and relay integration allow for addition of high accuracy metering and power system protection to both new and existing power SCADA systems for remote monitoring.

   Standard Features

The following true RMS, 3 element power metering of each power source and bus shall be provided as a minimum:

  1. Line to line voltages:
    • Vab, Vbc, Vca
  2. Phase currents:
    • Ia, Ib, Ic
  3. Frequency, Hz
  4. Three phase power parameters:
    • kW (per phase and total)
    • Power Factor (per phase and total)
    • KVAR (per phase and total)
    • kVA (per phase and total)
  5. Three energy export and import power parameters:
    • kWh, kVARh, kVAh
  6. Power Quality parameters:
    • %THD Volts per phase
    • %THD Amps per phase
    • %TDD Amps per phase
    • K-factor per phase
    • Individual odd voltage harmonics per phase up to order 39
    • Individual odd current harmonics per phase up to order 39
    • Fundamental component of KW and Power Factor (per phase and total)
  7. Other parameters:
    • Percent ampere peak capacity of the highest phase
    • Neutral current
    • Current unbalance
    • Voltage unbalance
    • Maximum kW demand
    • Maximum kVA demand
    • Minimum and maximum values for voltages, currents frequency and power parameters


   Metering Accuracy

Metering accuracy shall be in accordance with ANSI C12.20-1998 and rated as follows:

  1. Class 10 0.5% for energy.
  2. 2% of reading and 0.02% of full scale for voltages and currents.
  3. 3% of reading and 0.02% of full scale for active and apparent power.

   Meter Display

  • Dedicated high-brightness digital LED displays shall be provided which are visible in the bright sun light or in the dark.

Engineering Bid Specifications

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Installation Drawings & Diagrams

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Applicable Standards

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