HomeMy WebLinkAboutSpecifications 2Specifications
48v Fault Tolerant DC Plant System
1.0 General Description
These specifications are for the emergency purchase, expedited delivery, installation and
setup of four (4) 120/48v Fault Tolerant DC Plant Systems as described herein. The
systems shall be located at Fire Station 3, 1175 N.W. 7th Street, and the other at the
County Administration Building, located at 111 NW lst Street, and both shall have an
automatic tandem bulk switch to have the load switch without service interruption from
the primary power plant system to the secondary co -located power plant system, in case
of any outage or technical difficulty from the primary plant system.
The systems as sold will be turnkey, and will include racks, rack mounting, rack
grounding screw bushings, screws, nuts, bolts, connections, wires, wire harnesses, cables
and cable assemblies, backboards where necessary and/or required by code, and all other
parts and appurtences as needed for the systems to be complete and functional.
The vendor shall be responsible for removing and relocating for storage the existing
equipment to the city's repair facility at 1101 N.W. South River Drive, Miami, Florida.
Upon award of the purchase order, with three business days the vendor shall provide the
city with electrical diagrams for the installation as will be built, with all associated
information for loads on the diagram, and schedule for the installation. The entry to all
locations will be coordinated with personnel from the City of Miami.
Equipment will be shipped for staging to the city's repair facility at 1101 N.W. South
River Drive, and from there will be transported to the sites for installation.
The city may require, at its discretion, for system cutovers to occur at a time of least
system impact, which most likely will be early morning hours, or on the weekend. This
will be coordinated with the operations of the public safety agencies of the city, Police
and Fire/Rescue, for risk mitigation, and will be done in concert with all pertinent
agencies to protect the continuation of the operations.
The installation shall adhere and comply with the National Electric Code, the State of
Florida Building Code, and all other standards, codes and ordinances that pertain to the
installation of electrical power.
2.0 Technical Description
The system shall be comprised of redundant 48 volt DC Modules that shall be able to
scale together to provide up to their capacity in power, from a 120 volt single phase
1
source, and 48v/120 volts inverters to supply clean uninterruptible 120VAC 60Hz
electricity to the load through a distribution panel with circuit breaker on each electrical
circuit
The power to be supplied from each system shall be based on:
1. The current AC load for radio system components and subsystems is 40 amps at
120VAC Single Phase.
2. The battery recharge current is 190 amps and 48VDC.
3. The overall system shall not be loaded beyond 40%.
4. The loss from one module shall not decrease the power availability to less than
the power needed to run the system.
5. The completed unit must not exceed two racks, each a 7 feet x 23 inch frame rack,
to be sold and installed by the vendor.
6. The overall system •shall be able to be wired to provide 21 KVA to the load and
populated for not less than 11 KVA. Any shelves and harnesses needed to drop in
extra inverters must be supplied so that growth shall require just the installation of
additional DC Rectifiers and Inverters.
The Inverter for the dc power plant shall convert the 48VDC to 120VDC as follows:
1. Must be scalable and modular and able to run in a rack mountable enclosure.
2. Be configurable for single, split or three phase operation.
3. Must use a 48volt bus.
4. Must contain a maintenance bypass and a static switch.
5. Must have AC input/output over current protection.
6. The inverter outputs shall feed a 120VAC bus that will be connected to the
existing 120VAC distribution panel by the vendor.
Each of the four (4) Rectifiers for the dc power plant shall convert 120VDC to 48V to
charge batteries and operate all radio system components simultaneously. These shall be
as follows:
1. Four Rectifier shelves with not less than four (4) rectifier slots each.
2. The shelves shall have the load balanced among them.
3. Single Phase individual AC input per shelf
4. Each rectifier shall provide up to 1200 Watts, minimum @ 48 vdc.
5. One (1) 48V battery termination panel with Low Voltage Battery Display
6. One (1) twenty (20) position circuit breaker DC distribution panel
7. Ten (10) 70A mid trip circuit breakers with sensors.
8. Sufficient rectifiers must be supplied to allow for the loss of one rectifier without
affecting the overall system output's capability to run the full radio system load
plus battery charging amperage.
2
The system shall have remote control and monitoring over all rectifier and inverter
components over SNMP and TCP/IP, and shall have alarm outputs. Said alarm outputs
shall be wired to provide audible and visual indication on site for each failed condition.
The Vendor shall place into one rack the two shelves for the 48v rectifier system, the
48VDC distribution panel with eight (8) breaker positions, and the 48VDC, 1200A
battery termination panel. The vendor shall place into a second rack the necessary
48/120 Inverter modules to provide not less than 11KVA output power, the static switch,
the maintenance bypass, over protection circuitry, voltage/current meters to read input,
48v and output voltage and current levels.
The vendor shall be responsible for installing cabling from the 120VAC bus bar to the
existing 120 VAC distribution box.
The Vendor shall provide battery temperature thermal probes and environmental sensors,
and their installation and setup in each system, to allow the system controller to report on
the status of the batteries.
The Vendor shall include in their system on line visual metering of input, intermediate,
and output voltages and current loads. Said metering shall provide a visual indication for
any technician to be able to read the input voltage and current, the 48V Rail voltage and
current, and the inverters output voltage and current.
The Vendor shall provide in the system a Power Line Disturbance recording system that
can provide a viewable and retrievable record of power sags, dips, lags, short failures,
and other power disruptions.
The System shall be able to provide visual indication of a failed inverter or rectifier, and
which failed inverter or rectifier is required be replaced. All failed inverters and rectifiers
shall be hot swappable so that they can be replaced without requiring system downtime.
The Vendor shall be responsible for fully assembling and wiring the racks and all sold
equipment, including connections to existing batteries using the wires presently used to
connect to the batteries.
The Vendor shall not exceed the NEC bending radius for any and all cables within the
system, and shall not fill any conduits by more than 65%.
The Vendor shall be responsible for supplying to the city the final as -built drawings of
the installed system, manufacturer's operations and repair manuals for the city's records
and usage, and shall train the city's staff on site for system troubleshooting and setup of
the power plant.
All Vendor personnel working on this system will have all required certifications as per
national, state and local electrical and building codes.
3
The Vendor is required to apply for and pull permits for all work to be done, if required
by national, state or local codes and ordinances.
All racks shall be installed plumb and straight and shall be grounded. No equipment shall
be mounted below a height of twelve inches from the floor. All connections shall be
copper.
All voltage flow in the rack shall be in one direction, from the top of the rack through the
bottom.
3.0 Vendor Response
As part of their response, the Vendor shall include:
1. Manufacturer's literature for each individual model of equipment.
2. Elevation drawings for each rack as proposed, showing the arrangement of the
equipment as planned for implementation.
3. Proposed wiring diagram.
4. A bill of materials for all installation materials and equipment.
5. A copy of the manufacturer's warranty.
6. A proposed timeline for the delivery and installation of the system
4.0 System Acceptance
The installed System at each site shall be accepted upon thirty continuous days of
operation with no failures. Any failures at each system will restart the thirty day
acceptance test period for the particular site.
5.0 Warranty
The Vendor shall provide pricing for a five year on -site replacement warranty for all sold
parts, and shall quote a price for extending the warranty in three year periods. In the case
these are not sold as such, the Vendor shall provide a line item for the city to elect year -
by -year maintenance.
6.0 Delivery
The Vendor shall be responsible for expediting the shipping of all parts, assemblies,
components, and other subsystems of this project for completion of the project
installation no later than 6 weeks from issuance of purchase order.
4