Utility Power Control™
Encorp Controls provide easier and faster installation, increased reliability and the latest cutting-edge technology.

Technical Data Sheet (PDF)


  • Embedded PLC software module, IEC 1131-3 Programming Language (Ladder Logic)
  • Communication through LONWORKS® AND Modbus® (RS-232/485)
  • UL recognized
  • Embedded software modules include master synchronizer, true RMS real power sensor, automatic transfer switch and import/export control, kW load-sharing control with softloading and unloading, base-load control, VAR/PF control, protective relays and PLC — all in one box.
  • Includes complete power metering and monitoring functions
  • Utility-grade device
  • Remote operation using a variety of communications methods and our Microgrid Secure™ software
  • Remote real and reactive power reference settings
  • Programmable, separately isolated switch inputs and relay outputs
  • Setup and configuration with standard PC (no handheld programmer required)
  • Complete Power Metering & Monitoring Functions
  • True RMS real power sensor
  • Remote power quality monitoring
  • Remote energy/electrical metering
  • Remote data logging

Customizable Design for Multiple Applications
  • Peak shaving/sharing
  • Distributed generation
  • Softloading closed-transition transfer
  • Import/export
  • Energy management
  • Cogeneration
  • Genset testing under load
  • Real-time pricing
  • Interruptible rates

Master Control for Multiple Generator Applications

The Gold Box™ with the Power Transfer Control (PTC) configuration provides safe, reliable transfer of power between a single generator and the utility grid. Standard options include a wide variety of traditional control modules and open-communication protocols integrated into a single unit.

The Gold Box™ with the kWS-enabled (kilowatt sharing) configuration provides safe, reliable paralleling of multiple generators. Combined with our Utility Power Control™, the kWS-enabled GPC is ideal for synchronizing and paralleling multiple generators to the utility grid. These integrated solutions provide easier and faster installation, increased reliability and the latest cutting-edge technology. Combined with our 2-year standard warranty and 24-hour technical support, the Gold Box™ is the complete solution for all power control needs.

Intuitive Graphical User Interface

  • Includes Network Service Tool (NST) setup and configuration tool for LONWORKS® based hardware
  • Store parameters for easy transfer between units
  • 32-bit application, Windows® 95 and NT® 4.0 compatible
  • Runs on standard desktop or laptop PC eliminating the need for a hand-held programmer
  • Basic monitoring functions built-in
  • Simple “drag-and-drop” interface
  • Reads and displays LONMARK® object names
  • Utilizes simple user-created forms
  • Industry standard ODBC-compliant database
  • High-speed OLE automation server
  • Reads and displays values and documentation for monitored data points

Protective Relaying Functions
  • Sync check (25)
  • Auto-synchronizer (25A) with voltage matching,
    two modes available:
    • Frequency and phase matching
    • Slip frequency
  • Over/under voltage for generator and utility tie (27/59)
  • Over/under frequency for generator and utility tie (81 O/U)
  • Directional power (32)
  • Directional reactive power (32VAR)
  • Reverse-phase/phase-balance current (46)
  • Phase sequence voltage (47)
  • Voltage-restrained overcurrent (51VR)


    Humidity: 95% at 38° C
    Temperature: -25°C to 70° C

    Power Requirements:
    18 to 75 Vdc (<10W)
    85 to 265 Vac (<25W)

    Single Phase Potential Input:
    60 to 150 Vac; 50/60 Hz; delta, open delta or wye configurations

    3-Phase Potential Inputs:
    60 to 150 Vac; 50/60 Hz; delta, open delta or wye configurations

    Single Phase Current Input:
    0 to 5 amps; 50/60 Hz

    3-Phase Current Inputs:

    0 to 5 amps; 50/60 Hz

    Digital Inputs:

    20 to 40 Vac/Vdc; 85 to 150 Vac/Vdc

    Digital Outputs:
    1 to 120 Vac/Vdc; 0.15 amps max

    Frequency and Voltage Bias Outputs:
    +/- 3 Vdc and 4-20 mA
    Designed to meet or exceed ANSI/IEEE C37.90-1989, IEEE Standards for Relays and Relay Systems Associated with Electrical Power Apparatus (5000 Volt Surge Withstand)

    Designed to comply with:
    IEC 1000-4-2 Electrostatic Discharge
    IEC 1000-4-3 Radiated Immunity
    IEC 1000-4-4 Fast Transient
    IEC 1000-4-5 Surge Withstand
    IEC 1000-4-6 Conducted Immunity
    ANSI/IEEE C37.90.1 Surge Withstand/Fast Transient
    ANSI/IEEE C37.90.1 Radiated Immunity

    Designed for LONMARK® Compatibility

    Recognized to U.S. and Canadian requirements under the Component Recognition Program of Underwriters Laboratories Inc.


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