Lower Monumental Nexus Meters
Intent The following specifications pertain to the purchase of two (2) power generation and quality meters for the main generating units 1-6 at Lower Monumental Lock and Dam. The meters are used to tr... Intent The following specifications pertain to the purchase of two (2) power generation and quality meters for the main generating units 1-6 at Lower Monumental Lock and Dam. The meters are used to transmit power generation data to BPA through the GDACS system. power meters The power generation and quality meter shall be model# Nexus 1252A-120-D2-60Hz-V1-INP200-X with the following salient features: Base: Nexus 1252 Memory options: A, advanced Operating voltage: 120, 0-150 Volts PH-N Control power: D2, 90-276 Volts AC/DC power supply Frequency range: 60Hz V-Switch pack: V1, standard Nexus 1252 meter Internal expansion port options: INP200, Total Web Solutions, 10/100BaseT Ethernet Revenue seal: X, none Additionally, the power meter shall be a multi-function, 3-phase, solid state unit with the ability to connect to either 3-phase, 4-wire Wye or 3-phase, 3-wire Delta circuits. The meter shall include two, 10-character, alphanumeric passwords to protect the unit from unauthorized tampering. Voltage and current inputs to the meter shall conform to the following, at a minimum: Monitor shall accept input of four (4) independent voltage inputs and four (4) independent current inputs of the stated capacity. Voltage input shall be 120 volts AC with available option for direct connection to voltage circuits of up to 600 VAC without the use of potential transformers. Voltage input shall be optically isolated to 2500 volts DC and shall meet or exceed ANSI C37.90.1 (Surge Withstand Capability). Current input shall be rated for 5 amps with inputs 2x continuous programmable to any CT range. Current inputs shall be solid U-Bolt stud inputs with a ten-second over-current rating of 100 amps, a three second over-current rating of 300 amps, and a one-second over-current rating of 500 amps; at 23 degrees C. Meter shall measure and report the following quantities, at a minimum: Voltage, both phase-to-neutral and phase-to-phase, for all three phases; auxiliary voltage; phase angles for each voltage relative to each other. One cycle, 200 milliseconds and one second readings shall be available simultaneously. Current, phase A, B, C, N-measured, and N-calculated; Phase angles for each current relative to voltages. One cycle, 200 milliseconds and one second readings shall be available simultaneously. Watts (total and per phase), VARs (total and per phase), VA (total and per phase), power factor (total and per phase) and frequency. 200 milliseconds and one second readings shall be available simultaneously. Accumulated Watt-hour, VA-hour, and VAR-hour; Watt-hour received; Watt-hour delivered. VAR-hour and VA-hour reading shall be stored in each of the four (4) quadrants of power. Power demand shall be calculated using four (4) different averaging methods: thermal average, fixed window average, sliding window average, and predicted average. Values for all averaging intervals shall be available simultaneously. Power meter shall provide updates of all voltage and current readings at intervals of 1 cycle, 200 milliseconds, and 1 second. Readings shall be available for both metering and control. All specified readings shall be made available via the RS485 ports. Power meter shall provide time-stamped maximum and minimum readings for every measured parameter. Power meter shall provide coincident VAR readings for all maximum Watt readings. Meter shall provide the following accuracies: Voltage accuracy shall be within less than 0.05% for the 1 second readings and less than 0.1% for the 200 millisecond readings. Current accuracy shall be within less than 0.025% for the 1 second readings and less than 0.10% for the 200 millisecond readings. Power and energy accuracy shall be within less than 0.06% at unity PF and within 0.10% at 0.50 PF. Frequency accuracy shall be within less than 0.01 Hz for the 1 second readings and less than 0.03 Hz for the 200 millisecond reading. The unit shall have an auto-calibration circuit designed to calibrate the readings using an internal reference. The calibration shall commence upon temperature change. Meter shall provide multiple digital communication ports and support multiple open protocols. The meter shall include four (4) independent, digital communication ports. Each port shall be RS485 architecture. Port 1 shall be user-selectable as either RS232 or RS485 architecture. The meter shall offer both Modbus and DNP 3.0 level 2 plus open protocols as standard configurations. All instantaneous data, logged data, event data, power quality analysis and waveform information shall be available using these open protocols. Meter shall be capable of recording time-stamped Flicker readings in an EN50160 log, provide a separate IRIG-B input for time synchronizing to GPS time signal, and provide an external display to accommodate access to readings locally and/or remotely. Meter shall be equipped with non-volatile RAM for recording logs and programming information and shall provide historical data logging for trending of measured values. Meter shall provide waveform recording to capture and record transients and quality problems on current and voltage waveforms. Meter shall be programmable by software supplied by the meter manufacturer. Meter shall offer ElectroLogic programmable logical protection and control, with the following salient features: 1. Measure no less than 7000 values and be programmable with limits and logic that trigger operations. 2. The programmable logic structure shall allow users to develop up to three levels of logic control based on limits and status conditions. 3. The logic structure shall be programmable through a graphical tree structure, and shall allow the user to set logical descriptors. 4. The graphical programming structure shall be easily configurable to the user’s desired logical scheme. 5. The control function shall be extendible to at least sixteen (16) relay outputs. MANUFACTURER’S manuals The Contractor shall supply two (2) copies of the manufacturer’s Installation & Operation manuals and I/O Modules manuals. Copies shall be provided in both hard and electronic (PDF) formats and clearly labeled. Shipment and Delivery Meters shall be delivered FOB to Lower Monumental Lock and Dam within 8 weeks of contract award. The Contractor shall be responsible for packing and shipping the components in a manner that will ensure undamaged and complete arrival to Lower Monumental Lock and Dam. Shipments are only allowed during normal business hours of Monday - Thursday 7:00 a.m. to 4:00 p.m., excluding federal holidays. All shipments shall be delivered to: Lower Monumental Lock and Dam Attn: Contract Performance Specialist 5520 Devils Canyon Road Kahlotus, WA 99335 Intent The following specifications pertain to the purchase of two (2) power generation and quality meters for the main generating units 1-6 at Lower Monumental Lock and Dam. The meters are used to transmit power generation data to BPA through the GDACS system. power meters The power generation and quality meter shall be model# Nexus 1252A-120-D2-60Hz-V1-INP200-X with the following salient features: Base: Nexus 1252 Memory options: A, advanced Operating voltage: 120, 0-150 Volts PH-N Control power: D2, 90-276 Volts AC/DC power supply Frequency range: 60Hz V-Switch pack: V1, standard Nexus 1252 meter Internal expansion port options: INP200, Total Web Solutions, 10/100BaseT Ethernet Revenue seal: X, none Additionally, the power meter shall be a multi-function, 3-phase, solid state unit with the ability to connect to either 3-phase, 4-wire Wye or 3-phase, 3-wire Delta circuits. The meter shall include two, 10-character, alphanumeric passwords to protect the unit from unauthorized tampering. Voltage and current inputs to the meter shall conform to the following, at a minimum: Monitor shall accept input of four (4) independent voltage inputs and four (4) independent current inputs of the stated capacity. Voltage input shall be 120 volts AC with available option for direct connection to voltage circuits of up to 600 VAC without the use of potential transformers. Voltage input shall be optically isolated to 2500 volts DC and shall meet or exceed ANSI C37.90.1 (Surge Withstand Capability). Current input shall be rated for 5 amps with inputs 2x continuous programmable to any CT range. Current inputs shall be solid U-Bolt stud inputs with a ten-second over-current rating of 100 amps, a three second over-current rating of 300 amps, and a one-second over-current rating of 500 amps; at 23 degrees C. Meter shall measure and report the following quantities, at a minimum: Voltage, both phase-to-neutral and phase-to-phase, for all three phases; auxiliary voltage; phase angles for each voltage relative to each other. One cycle, 200 milliseconds and one second readings shall be available simultaneously. Current, phase A, B, C, N-measured, and N-calculated; Phase angles for each current relative to voltages. One cycle, 200 milliseconds and one second readings shall be available simultaneously. Watts (total and per phase), VARs (total and per phase), VA (total and per phase), power factor (total and per phase) and frequency. 200 milliseconds and one second readings shall be available simultaneously. Accumulated Watt-hour, VA-hour, and VAR-hour; Watt-hour received; Watt-hour delivered. VAR-hour and VA-hour reading shall be stored in each of the four (4) quadrants of power. Power demand shall be calculated using four (4) different averaging methods: thermal average, fixed window average, sliding window average, and predicted average. Values for all averaging intervals shall be available simultaneously. Power meter shall provide updates of all voltage and current readings at intervals of 1 cycle, 200 milliseconds, and 1 second. Readings shall be available for both metering and control. All specified readings shall be made available via the RS485 ports. Power meter shall provide time-stamped maximum and minimum readings for every measured parameter. Power meter shall provide coincident VAR readings for all maximum Watt readings. Meter shall provide the following accuracies: Voltage accuracy shall be within less than 0.05% for the 1 second readings and less than 0.1% for the 200 millisecond readings. Current accuracy shall be within less than 0.025% for the 1 second readings and less than 0.10% for the 200 millisecond readings. Power and energy accuracy shall be within less than 0.06% at unity PF and within 0.10% at 0.50 PF. Frequency accuracy shall be within less than 0.01 Hz for the 1 second readings and less than 0.03 Hz for the 200 millisecond reading. The unit shall have an auto-calibration circuit designed to calibrate the readings using an internal reference. The calibration shall commence upon temperature change. Meter shall provide multiple digital communication ports and support multiple open protocols. The meter shall include four (4) independent, digital communication ports. Each port shall be RS485 architecture. Port 1 shall be user-selectable as either RS232 or RS485 architecture. The meter shall offer both Modbus and DNP 3.0 level 2 plus open protocols as standard configurations. All instantaneous data, logged data, event data, power quality analysis and waveform information shall be available using these open protocols. Meter shall be capable of recording time-stamped Flicker readings in an EN50160 log, provide a separate IRIG-B input for time synchronizing to GPS time signal, and provide an external display to accommodate access to readings locally and/or remotely. Meter shall be equipped with non-volatile RAM for recording logs and programming information and shall provide historical data logging for trending of measured values. Meter shall provide waveform recording to capture and record transients and quality problems on current and voltage waveforms. Meter shall be programmable by software supplied by the meter manufacturer. Meter shall offer ElectroLogic programmable logical protection and control, with the following salient features: 1. Measure no less than 7000 values and be programmable with limits and logic that trigger operations. 2. The programmable logic structure shall allow users to develop up to three levels of logic control based on limits and status conditions. 3. The logic structure shall be programmable through a graphical tree structure, and shall allow the user to set logical descriptors. 4. The graphical programming structure shall be easily configurable to the user’s desired logical scheme. 5. The control function shall be extendible to at least sixteen (16) relay outputs. MANUFACTURER’S manuals The Contractor shall supply two (2) copies of the manufacturer’s Installation & Operation manuals and I/O Modules manuals. Copies shall be provided in both hard and electronic (PDF) formats and clearly labeled. Shipment and Delivery Meters shall be delivered FOB to Lower Monumental Lock and Dam within 8 weeks of contract award. The Contractor shall be responsible for packing and shipping the components in a manner that will ensure undamaged and complete arrival to Lower Monumental Lock and Dam. Shipments are only allowed during normal business hours of Monday - Thursday 7:00 a.m. to 4:00 p.m., excluding federal holidays. All shipments shall be delivered to: Lower Monumental Lock and Dam Attn: Contract Performance Specialist 5520 Devils Canyon Road Kahlotus, WA 99335
Data sourced from SAM.gov.
View Official Posting »