MODIFICATION
61 -- UNINTERRUPTIBLE POWER SUPPLY (UPS) - PART II
- Notice Date
- 3/1/2002
- Notice Type
- Modification
- Contracting Office
- FISC Seal Beach Det., 800 Seal Beach Blvd., Bldg 239, Seal Beach, CA 90740-5000
- ZIP Code
- 90740-5000
- Solicitation Number
- N0024402R0025
- Response Due
- 4/2/2002
- Point of Contact
- Gretchen Ye, Contract Specialist
- E-Mail Address
-
Email your questions to Use this e-mail address to contact the contract specialist
(yeh.gretchen@sbeach.navy.mil)
- Description
- SPECIFICATIONS FOR UNINTERRUPTIBLE POWER SUPPLY(UPS) 1. SCOPE 1.1 The specifications below define the minimum technical and support requirements for the 300 KVA Uninterruptible Power Supply (UPS) to be procured. 1.2 The contractor shall provide the personnel, facilities, materials, and supplies as required to design, fabricate, deliver, and install the UPS. 1.3 The UPS will provide backup power for the Atlantic Fleet Weapons Training Facility (AFWTF) at Puerto Rico. It shall be installed in Rm.# C-16, Bldg# 386, to replace the obsolete, existing 200 KVA UPS. 2. SYSTEM REQUIREMENTS 2.1 The System The UPS shall operate in conjunction with the existing building electrical system to provide power conditioning, back-up power protection and distribution for electronic equipment loads. The system shall consist of a solid state inverter, rectifier/ battery ch arger, a 100% rated for continuous duty static switch, an internal maintenance bypass switch, an internally assembled battery cabinet and synchronizing circuitry within the enclosure as described herein. 2.2 Ratings Output Power: 300kVA/240 kW 2.3 Input Requirements 2.3.1 Voltage: 480 VAC, 3 phase, 3 wire plus ground or 3 phase, 4 wire plus ground + 15%. 2.3.2 Input Frequency: 60 Hz + 10%. 2.3.3 Input Current: up to 400A @480 2.3.4 Input Power Factor: Up to .90 lagging, .95 with filter 2.4 Output Characteristics 2.4.1 Voltage: 480 VAC, 3 phase, 3 wire plus ground (208Y/120 available with auxiliary cabinets). Output voltage adjustable + 5%. 2.4.2 Voltage Regulation + 0.5% for balanced load + 5% for 100% unbalanced load 2.4.3 Voltage Transient Response + 5% for 100% step load change + 1% for loss or return of AC input power + 1% for manual transfer at full load 2.4.4 Voltage Recovery Time: Return to within .05% of nominal value within 16.67 milliseconds (one cycle). 2.4.5 Phase Angle Displacement 120? + 1? for balanced load 120? + 3? for 100% unbalanced load 2.4.6 Voltage Distortion: Maximum 2% total harmonic distortion (THD) and 1% any single harmonic when the UPS is connected to 100% linear loads. 2.4.7 Non-Linear Load Capability: Output voltage (THD) shall be less than 4% when connected to a 100% non-linear load with a crest factor not to exceed 3.5. 2.4.8 Frequency: 60 Hz + 2.0 Hz synchronized with bypass (selectable in 0.25 Hz increments). 60 Hz + 0.1% free running. 2.4.9 Slew Rate: Set at 1 Hz/second maximum (selectable in .5 Hz increments up to 2.0 Hz). 2.4.10 Power Factor: 0.8 at the rated volt-amperes (VA) 2.4.11 Overload Capability 125% of rated load for at least 10 minutes 150% of rated l oad for at least 1 minute 2.5 DC Battery 2.5.1 Battery Protection: After the UPS has shutdown on DC under voltage condition (battery cut off voltage), the battery circuit breaker shall open in order to prevent excessive battery discharge. 2.6 Environmental Conditions 2.6.1 Ambient Temperature: Operating: 0? to 40?C Non-Operating: -25? to +70?C 2.6.2 Relative humidity (operating and storage): 0 to 95% non-condensing 2.6.3 Barometric Pressure Operating: Up to 1000 meters above sea level (up to 2000 meters with ambient temperature less than 28?C) Non-Operating: Up to 12,000 meters above sea level 2.7 System Description and Operation The UPS shall be designed to operate as an on-line reverse transfer system in the following modes: * Normal - The inverter shall continuously supply power to the critical load. The rectifier/batter y charger shall derive power from the utility AC source and supply DC power to the inverter while simultaneously float charging the battery. * Emergency - Upon failure of the utility AC power source, the critical load shall be powered by the UPS without interruption. * Recharge - Upon restoration of the utility AC power source (prior to complete battery discharge), the rectifier/battery charger shall power the inverter and simultaneously recharge the battery. * Bypass Mode - The static bypass transfer switch shall be used to transfer the load to the bypass without interruption to the critical power load. This shall be accomplished by turning the inverter off. Automatic re-transfer or forward transfer of the load shall be accomplished by turning the inverter on. * Maintenance Bypass/Test Mode - An optional manual make before break maintenance bypass switc h shall be provided to isolate the UPS inverter output and static bypass transfer switch for maintenance. This shall allow the UPS to be tested or repaired without affecting load operation. 2.8 Functional Description 2.8.1 Rectifier/Battery Charger The rectifier/battery charger shall have sufficient capacity to support a fully loaded inverter and recharge the battery to 95% of its full capacity within 10 times the discharge time. The rectifier/battery charger assembly shall be constructed of modular plug-ins to facilitate maintenance. 2.8.1.1 Input Protection The rectifier/battery charger shall be protected by an AC input circuit breaker and input fuses. 2.8.1.2 Current Limiting Input Current Limit: 125% of nominal input current. A second step input current limit activated by a dry contact shall be provided. The second step input current limit is programmable. 2.8. 1.3 Operating Modes * Automatic Charge Sequence: The rectifier battery charger shall automatically charge the batteries at an elevated voltage after an outage of 0-255 seconds for 0-255 hours. * Float: Nominal DC bus voltage (programmable) provided under nominal operating conditions. * Equalize/Commissioning Service: A high charge rate of DC voltage capable of being set at 2.5 volts per cell at a user selected time period. 2.8.2 Inverter The inverter assembly shall be constructed of modular rack out assemblies to facilitate maintenance. 2.8.3 Static Bypass The static bypass transfer switch shall be solid-state, rated for continuous duty and shall operate under the following conditions: 2.8.3.1 Uninterrupted Transfer The static bypass transfer switch shall automatically cause the bypass source to assume the critical load without interruption after the lo gic senses one of the following conditions: * Inverter overload exceeds unit's rating * Battery protection period expired and bypass available * Inverter failure 2.8.3.2 Interrupted Transfer If the bypass source is beyond the conditions stated below, interrupted transfer (not less than 0.2 seconds in duration) shall be made upon detection of a fault condition. * Bypass voltage greater than + 10%, and -15% from the UPS rated output voltage. * Bypass frequency greater than + 2 Hz (selectable in .25 Hz increments) from the UPS rated output frequency. 2.8.3.3 Automatic Uninterrupted Forward Transfer The static bypass transfer switch shall automatically forward transfer, without interruption, after (1) the UPS inverter is turned "ON", or (2) after an instantaneous overload-induced reverse transfer has occurred and the load current returns to less than th e unit's 100% rating. 2.8.3.4 Manual Transfer A manual static transfer shall be initiated from the System Status and Control Panel by turning the UPS inverter off. 2.8.3.5 Overload Ratings The static bypass transfer switch shall have the following overload characteristics: * 1000% of UPS output rating for 0.016 seconds (one cycle) * 150% of UPS output rating for 1 minute * 125% of UPS output rating for 10 minutes 2.8.4 Microprocessor Controlled Logic The full UPS operation shall be provided through the use of microprocessor controlled logic. All operations and parameters are firmware controlled, thus eliminating the need for manual adjustments or potentiometers. The logic shall include a self-test and diagnostic circuitry such that a fault can be isolated down to the printed circuit assembly or plug-in power assembly level. Every printed circuit assembly or plug-in power assembly shall be monitored. Diagnostics shall be performed via a PC through the local diagnostics port on the unit, or via a modem through the RS232 communication port. 2.8.5 System Status and Control Panel The UPS shall be provided with a system status and control panel that controls, monitors and displays system operation and parameters. The display shall be available in English. 2.8.5.1 System Parameters Monitored The visual display shall display the following system parameters based on true RMS metering: * Input voltage (L-L). Three phase simultaneously. * Input current/phase. Three phase simultaneously. * Bypass input voltage (L-L and L-N). Three phase simultaneously. * Bypass input frequency. * UPS output voltage (L-L and L-N). Three phase simultaneously. * UPS output current/phase. Three phase simultaneously. * UPS output, bypass and input frequency. * UPS output % load. * UPS output power factor. * UPS output kVA and kW. * DC voltage * Crest factor per phase * Battery current (charge/discharge) * Time remaining on battery and available battery time * Battery cabinet temperature 2.8.5.2 Audible Alarm Reset Touch Pad The Pad shall be used to silence the audible alarm. If a new alarm is sensed after the original alarm has been silenced, it shall reactivate the audible alarm. 2.8.5.3 Emergency Power Off (EPO) When EPO is pressed, it shall cause the AC input, bypass input contactor and battery circuit breakers to open, thereby shutting down the UPS and the load. The EPO function shall be capable of being initiated by an externally provided isolated dry contact (REPO). 2.8.5.4 Operating Instructions The visual display shall provide all following menus and instructions: * Inverter ON/OFF commands * Voltage measurements * Language selection * Current measurements * Display contrast * Frequency & power measurements * Alarm display * Communication options * Battery capacity 2.8.5.5 LED Indication. The visual display shall provide the following LED's: * Load-on bypass * Inverter on * Operating event * Inverter off * UPS on-line 2.9 Communication Features 2.9.1 Dry Contacts Alarm dry contacts shall be available for external connection. Each alarm shall include two form C contacts. These contacts shall indicate: * UPS on line/UPS on bypass * Inverter fault * Overload * Rectifier/charger on * UPS on battery * Rectifier/charger fault * Low battery shutdown imminent * Bypass out of tolerance * S ummary alarm * Static switch fault * UPS on maintenance The contacts shall change state to indicate the operating status. 2.9.2 Customer Provided Dry Contacts Inputs shall be available to control UPS operation. Upon receipt of a closed dry contact, the UPS shall perform the operations listed below (all inputs are normally open unless noted): * Remote EPO (Normally closed) * Second step input current limit * Bypass transfer prohibited * Remote UPS on * Break transfer prohibited * Remote UPS off * Progressive stop of rectifier/charger * Inverter nonsynch. with bypass * Second step battery charge limit 2.10 Accessories 2.10.1 Battery Pac 2.10.1.1 Battery Pac Assembly: The Battery Pac Assembly shall be furnished in a matching cabinet to the UPS. The Battery Pac Assembly shall include a battery disconnect that shall provide a positive means isolating the battery from the rest of the system for maintenance. The Battery Pac Assembly shall be designed to allow for checking the torque on all battery connections in the battery system as well as providing sufficient access for preventative maintenance. 2.10.1.2 Battery Type: (TO BE CONTINUED IN PART III)
- Web Link
-
Click here to get more information about FISC, San Diego
(http://www.sd.fisc.navy.mil)
- Record
- SN00034722-W 20020303/020301213253 (fbodaily.com)
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