This master should be used by designers working on Port of Portland construction projects and by designers working for PDX tenants (“Tenants”). Usage notes highlight a few specific editing choices, however the entire section should be evaluated and edited to fit specific project needs.

SECTION 260913–ELECTRICAL POWER MONITORING AND CONTROL

PART 1 - GENERAL

1.1DESCRIPTION

  1. This section describes devices, components, software, and accessories for the power monitoring, analysis, and control system (PMAC).

1.2RELATED WORK SPECIFIED ELSEWHERE

  1. Section 261100, Substations

1.3REFERENCES

  1. ANSI/IEEE: American National Standards Institute/Institute of Electrical and Electronics Engineers
  2. ANSI 50/51: Instantaneous/Time-Delay AC Over Current Relay
  3. ANSI C12.20: Electricity Meters - 0.2 and 0.5 Accuracy Classes
  4. CSA: Canadian Standards Associations
  5. CSA 22.2: Information Technology Equipment - Safety - Part 1: General Requirements
  6. FCC: Federal Communications Commission
  7. FCC Part 15: Radio Frequency Devices
  8. IEC: International Electrotechnical Commission
  9. IEC 1000-2
  10. IEC 1000-4
  11. IEC 1000-5
  12. ISO: International Organization for Standardization
  13. ISO 9000: Quality management systems -- Fundamentals and vocabulary
  14. NEC: National Electrical Code
  15. UL: Underwriters Laboratories
  16. UL 508: Standard for Industrial Control Equipment

1.4SUBMITTALS

  1. Submit technical data sheets, installation manuals, and/or user documentation manuals that describe product installation and operation, physical data, electrical characteristics, and connection requirements of the PMAC system.
  2. Submit shop drawings of the system design. Shop drawings shall:
  3. Be new, and prepared utilizing AutoCAD and backgrounds of the Port-provided reference drawings.
  4. Be of the size approved by the Port with title blocks, identifying drawing number and any reference drawings. Fully dimension all plans and elevations.
  5. Include, but not be limited to, the following:
  6. Complete floor plans with all systems included as part of the work of the section shown, at 1/8" = 1'-0" scale.
  7. Sections of congested areas shall be at 1/4" = 1'-0" scale.
  8. Indicate, but not be limited to, the following:
  9. Conduit routing and wiring.
  10. Control and riser diagrams.
  11. Schematic diagrams.
  12. Submit data regarding communication cables.
  13. Submit equipment installation details and drawings.
  14. Submit operation and maintenance manuals.
  15. Submit copies of all data file and application software for reload in the event of a system crash or memory failure.

1.5QUALITY ASSURANCE

  1. The Contractor shall be accredited to ISO 9000 quality assurance standards.
  2. The PMAC system shall not be a prototype. Similar systems shall have been fieldinstalled and successfully operated for at least three years.
  3. Calibrate the PMAC instrumentation at the factory using an instrument that is certified to have been calibrated using standards whose accuracies are traceable to the National Institute of Standards and Technology (NIST) or the National Research Council of Canada (NRC).

1.6SYSTEM DESCRIPTION

  1. General:
  2. The PMAC software shall gather building energy management information. The information may include several types of energy sources such as natural gas, water, steam, etc., in addition to electrical energy. The PMAC software shall run on server workstations and client workstations. Client workstations will access the PMAC software via the Port intranet.
  3. The PMAC system shall allow resources such as workstations, communication lines, PMAC instruments, peripherals, network bridges, application processors, additional printers, additional computer memory, and additional disk storage to be added without the need for software changes.
  4. System Integration:
  5. The PMAC system shall be easily integrated with third-party monitoring devices. The PMAC system shall be freely scalable and shall be able to support an arbitrary number of server and client workstations.
  6. Expansion shall not require the replacement of previously installed equipment. The system design shall anticipate increased requirements for processors, memory, IED (intelligent electronic device) channels, and peripherals.
  7. There shall be no single-vendor (proprietary) hardware components required for a workstation to operate as part of the PMAC system.
  8. Include application programs running on server workstations and client workstations. PMAC software running on server workstations and client workstations shall be the primary user interface to the PMAC information and control functions.
  9. The functions of the PMAC system shall include, but not be limited to:

1)Supervisory control.

2)Data acquisition from PMAC instruments and other telemetered data sources.

3)Processing of acquired data.

4)Collation of historical data.

5)LAN/WAN access to historical data.

6)Processing of events.

7)Annunciation of alarms.

8)Processing of requests from workstations.

9)Database generation and modification.

10)Customized data display generation and modification.

11)PMAC network system configuration.

12)Diagnostics and equipment test functions.

13)Customized application functions as required.

  1. PMAC Instrumentation:
  2. The PMAC instrumentation shall include, but not be limited to, panel-mounted metering/monitoring devices, digital and analog input and output devices, display panels, communications devices, and ancillary equipment.
  3. Provide appropriate potential transformers and current transformers to supply sensing signals for the PMAC instruments.
  4. Installation of PMAC devices and ancillary equipment, and wiring connections to all electrical circuits, PMAC devices, and terminal strips for external devices, shall conform to all local and national electrical codes.
  5. Provide shorting switches or test blocks for all meter CT inputs.
  6. System Communication:
  7. The PMAC shall utilize an Ethernet LAN.
  8. The system shall use a non-proprietary digital packet polling protocol to send data between each server workstation (or client workstation) and PMAC instruments connected on the data bus. The packet protocol shall provide unit and broadcast addressing, error checking, and bus control transfer capability.

1.7SITE CONDITIONS

  1. The PMAC instruments will be subjected to the following environmental conditions:
  2. Temperature: 32ºF to 122ºF.
  3. Humidity: 5 percent to 95 percent non-condensing.

1.8MAINTENANCE

  1. Provide preferred technical support service. This service shall include the following:
  2. Technical consultation via telephone for an unlimited number of hours per month, for the duration of the warranty period.
  3. Free upgrades to new firmware for PMAC instrumentation for the duration of the warranty period.

PART 2 - PRODUCTS

2.1PMAC INSTRUMENTS

  1. Manufacturers: Square D, or pre-bid approved equal.

Add or delete instruments as required.

  1. Circuit Monitors (CM-4000):
  2. Provide true rms metered values. Information provided by each circuit monitor shall include frequency, temperature, current, demand current, voltage, real power, reactive power, apparent power, demand power, predicted demand power, power factor, accumulated energy, accumulated reactive energy, total harmonic distortion (THD) of each current and voltage, and K-factor of each current.
  3. The current and voltage signals shall be digitally sampled at a rate high enough to provide true rms accuracy to the 255th harmonic (based on fundamental of 50/60 Hz).
  4. Be rated for an operating temperature range of -25°C to 70°C and shall have an overcurrent withstand rating of 500 amps for 1 second.
  5. Setup parameters required by the circuit monitors shall be stored in nonvolatile memory and retained in the event of a control power interruption.
  6. Accept metering inputs of up to 600Vac direct connection or from industry standard instrument transformers (120Vac secondary PTs and 5 A secondary CTs). Connection to 480Y/277Vac circuits shall be possible without use of PTs.
  7. PT primaries through 1.2 MV shall be supported.
  8. CT primaries through 32 kA shall be supported.
  9. The circuit monitor shall be accurate to 0.04 percent of reading plus/minus 0.025percent of full scale for voltage and current metering and 0.08 percent of reading plus 0.025 percent for power.
  10. The circuit monitor’s energy readings shall meet the revenue accuracy requirements of ANSI C12.20 0.2 class metering.
  11. Annual recalibration by users shall not be required to maintain published accuracy.
  12. Voltage and current for all phases shall be sampled simultaneously to assure high accuracy in conditions of low power factor or large waveform distortions (harmonics).
  13. Be capable of application in three-phase, three- or four-wire systems. A fourth CT input shall be available to measure neutral or ground current. If the fourth CT is not used, then a residual current shall be calculated by vectoral addition of the phase currents. In four-wire connections the circuit monitor shall utilize the circuit neutral common reference and not earth ground, to provide metering accuracy.
  14. Be capable of being applied without modification at nominal frequencies of 50, 60, or 400 Hz.
  15. Operate properly over a wide range of control power including 100305Vac or 100-300Vdc. Connections to 18-60Vdc shall also be available.
  16. Ride-through capability shall be available for backup control power for up to 2 seconds.
  17. Circuit monitor displays shall allow the user to select English, French, or Spanish language. The circuit monitor display shall also allow the user to select a date/time format and to create additional screens for user-specified views and/or custom quantities without overwriting existing standard screens. The circuit monitor display shall provide local access to the following metered quantities as well as the minimum and maximum value of each instantaneous quantity since the last min/max reset:
  18. Current, per phase rms, three-phase average and neutral (if applicable).
  19. Voltage, phase-to-phase, phase-to-neutral, and three-phase average (phase-to-phase and phase-to-neutral).
  20. Real power, per phase and three-phase total.
  21. Reactive power, per phase and three-phase total.
  22. Apparent power, per phase and three-phase total.
  23. Power factor, per phase and three-phase total.
  24. Frequency.
  25. Demand current, per phase and three-phase average.
  26. Demand real power, three-phase total.
  27. Demand apparent power, three-phase total.
  28. Accumulated energy, (MWh and MVARh).
  29. Total harmonic distortion (THD), current and voltage, per phase.
  30. K-factor, current, per phase.
  31. Reset of the following electrical parameters shall also be allowed from the circuit monitor display:

1)Peak demand current.

2)Peak demand power (kW) and peak demand apparent power (kVA).

3)Energy (MWh) and reactive energy (MVARh).

  1. Allow for setup for system requirements from the circuit monitor display. Setup provisions shall include:
  2. CT rating.
  3. PT rating.
  4. System type (three-phase, 3-wire; three-phase, 4-wire).
  5. Demand interval (5-60 min.).
  6. Watt-hours per pulse.
  7. Provide a hardware security switch to protect all revenue related metering configuration from unauthorized/accidental changes. The circuit monitor shall support the use of a wire seal to further deter inadvertent configuration changes and provide visual tamper indication.
  8. For ease in operator viewing, two displays shall be offered for local viewing of circuit monitor data. The liquid crystal display (LCD) shall include backlighting. The enhanced vacuum fluorescent display (VFD) shall be automatically activated by a proximity sensor as the operator approaches.
  9. Communicate via RS-232, RS-485, and Ethernet simultaneously.
  10. Provide Modbus communications using Modbus TCP via an Ethernet network at 10/100Mbaud using UTP or Fiber connections. Provide the circuit monitor with the capability to communicate to 31 additional Modbus devices existing on RS-485 daisy chains and report data back to the PMAC application software or across the Ethernet network to other software applications.
  11. Circuit monitor displays shall provide an RS-232 communications port on board the metering module as well as an IR RS-232 communications port located on the display. The display port shall be completely accessible during normal operation and shall not require exposure of the operator to life-threatening voltage when in use. The operator shall be able to quickly connect a small personal computer (PC) to either the module port or the display port without use of tools or splices. Both the metering module port and the display port shall have all of the communication functionality of the standard hard-wired port. When a connection is made to either the metering module port or the display port, the circuit monitor shall continue simultaneous operation of all communication ports associated with the circuit monitor.
  12. It shall be possible to field upgrade the firmware in the circuit monitor to enhance functionality. These firmware upgrades shall be done through either the display port or communication connection. Circuit monitor disassembly or changing of integrated circuit chips shall not be required. It shall not be necessary to de-energize the circuit or the equipment to upgrade the firmware.
  13. Perform all power demand calculations using any one of the following calculation methods, selectable by the user:
  14. Thermal demand calculated using a sliding window and updated every second. The sliding window length shall be defined by the user from 1 to 60 minutes, with 1minute increments.
  15. Block interval, with optional sub-intervals. The window length shall be set by the user from 1 to 60 minutes in 1-minute intervals. The user shall be able to set the sub-interval length from 1 to 30 minutes in 1-minute intervals.
  16. External pulse synchronization, utilizing a synch pulse provided externally. An optional status input shall be used to sense the pulse.
  17. Sliding block interval with continuous sliding 1-second sub-intervals.
  18. The default demand calculation method shall be a 15-minute continuous sliding block.
  19. Report the following demand readings:
  20. Average demand current, per phase.
  21. Peak demand current, per phase.
  22. Average demand for real power, reactive power, and apparent power.
  23. Predicted demand for real power, reactive power, and apparent power.
  24. Peak demand for real power, reactive power, and apparent power.
  25. Provide generic demand capability to supply demand calculations on any metered parameter.
  26. Be capable of receiving a broadcast message over the communications network that can be used to synchronize demand calculations by several circuit monitors. This message need not be addressed specifically to any one circuit monitor.
  27. Report the following energy readings:
  28. Accumulated energy.
  29. Accumulated reactive energy.
  30. Accumulated apparent energy.
  31. Reactive energy by quadrant.
  32. For real and reactive energy reported values, separate totals for energy flow in each direction shall be kept, as well as an arithmetic sum.
  33. Each circuit monitor shall be capable of operating a solid state KYZ output relay to provide output pulses for a user definable increment of reported energy. Minimum relay life shall be in excess of one billion operations.
  34. Include current and voltage waveform capture capability. Waveform capture shall be user selectable for 12, 24, 36, 48, or 60 cycles of data, user-specified up to 30 seconds.
  35. Waveform capture shall be initiated either from a PC workstation running the PMAC software or by the circuit monitor as a user-defined response to an alarm condition.
  36. Waveform capture manually triggered from the PMAC software shall be captured at 512 samples/cycle for one cycle providing harmonic content up to the 255th harmonic for Ia, Ib, Ic, I4, Va, Vb, Vc, and Vg.
  37. Two types of waveform capture shall be available for response to an alarm condition.

1)The first type shall support up to 512 samples/cycle resolution for 12 cycles with user defined 2 to 10 pre-event cycles.

2)The second type shall offer variable resolution for up to 30 seconds of continuous waveform recording. The circuit monitor shall be capable of triggering the second type of waveform capture on the occurrence (pickup) of an event and continue recording until the event ends (dropout) for up to 30seconds maximum duration.

  1. Transmit waveform samples over the network to the PC workstation for display, archival, and analysis.
  2. Each voltage and current of all the phases shall be sampled concurrently so that proper phase relationships are maintained, so that harmonic flow analysis can be performed, and so that the effect of a disturbance can be observed on all phase voltages and currents.
  3. Harmonic analysis performed on the captured waveforms shall resolve harmonics through the 255th using PMAC software.
  4. All waveforms shall reflect actual circuit performance. Waveforms synthesized or composed over time will not be acceptable.
  1. Data logging may be accomplished either within the circuit monitor, at the PC workstation, or both. Each circuit monitor shall be able to log data, alarms and events, and multiple waveforms. The monitors shall offer 8MB of onboard nonvolatile memory, which can be field upgraded without requiring disassembly or removal of the circuit monitor. Onboard data logs shall be communicated to the PC workstation upon demand or at scheduled intervals. Logged information to be stored in each circuit monitor includes:
  2. Up to 14 separate data logs shall be configurable by the user. Each log entry shall be date- and time-stamped. The type of data for the log shall be selected from a list of over 150 monitored values. Each log entry shall be user configurable to consist of from one to over 75 values of instantaneous data. It shall be possible to set up each log to record data at independent user-defined intervals. In addition, it shall be possible for a user to define an event or new minimum/maximum conditions that will trigger log file entries.
  3. Data logs shall be configurable by users to be fill and hold or circular (FIFO).
  4. A minimum/maximum log file shall include the time, date, and value for the minimum and maximum of each of the instantaneous metered values since last reset. A minimum/maximum/average log shall record the minimum/maximum/average readings for pre-defined quantities at a user-specified interval.
  5. An alarm and event log shall contain time, date, event information, and coincident information for each user-defined alarm or event. This log shall have a capacity of up to 1,000 events.
  6. Waveform logs shall store captured waveforms as defined by the user. Schedule waveform log entries at user-defined intervals, externally triggered, or forced in response to a user-defined event. Waveform logs shall be either fill and hold or circular (FIFO) as defined by the user.
  7. The PMAC software shall enable the user to allocate onboard circuit monitor memory for each logging function.
  8. Provide preconfigured, field-replaceable input/output (I/O) modules and also provide I/O options to be configured as applicable to each installation:
  9. Option One - One solid state output suitable for KYZ pulse initiation; four solid state status inputs; three (10A) mechanical output relays.
  10. Option Two – Four solid state status inputs; four analog inputs (4-20 mA).
  11. Option Three – Four inputs (32Vdc); 2 solid state outputs (60Vdc); 1 analog input (0-5Vdc); 1 analog output (4-20mA).
  12. Option Four - Eight solid state status inputs (120Vac).
  13. Option Five – Configurable I/O options including solid state input modules for 120Vac, 200Vac, and 32Vdc; solid state outputs modules for 120Vac, 240Vac, 60Vdc, 240Vdc; analog input modules for 0-5Vdc, 4-20mA; analog output module for 4-20mA.
  14. Time synchronization to 1 millisecond between monitors shall be accomplished via GPS synchronization.
  15. Alarm events shall be a combination of factory pre-configured events and user-definable events. Multiple levels of alarms shall be configurable for each metered parameter.
  16. The following classes of events shall be available as alarm events:

1)Over/under current.