Download Microprocessor Controlled Battery Charger Procurement Specification

Microprocessor charger specification, 16622 format
Revision C May 2011
2.03 COMPONENTS
F. Microprocessor Controlled Battery Charger: Microprocessor controlled SCR type designed for
continuous duty with field-demonstrated MTBF greater than 500,000 hours.
1. Standards: Charger shall be C-UL listed to UL 1012 and seismically certified to IBC 2000, 2003,
2006 and 2009 to an Sds value of 2.28g. Charger shall comply with NFPA 110, NFPA 70, FCC Part
15 Class A, ANSI C37.90 and ANSI C62.41, Cat. B. Charger shall carry the following labels: CUL listing, FCC compliance and IBC seismic certification. [Charger shall carry California OSHPD
seismic compliance and label.]
2. Battery compatibility and temperature compensation: Compatible with either lead-acid or
nickel-cadmium type batteries. Number of cells shall be field selectable. Charger shall be equipped
with battery temperature compensation with adjustable slope and equipped with remote probe for
sensing temperature at battery.
3. Adjustments: All charger parameters shall be adjustable by front panel keypad with configurable
user access levels. No potentiometers are acceptable anywhere in the charger.
4. Overcurrent protection: Electronic current limit adjustable from 33% to 110% of the charger’s
rated output. 2-pole AC input circuit breaker rated 10K AIC or higher and UL 489 listed for the AC
source voltage. 2-pole DC output circuit breaker rated 5K AIC or higher and UL 489 listed for DC
at the rated nominal output voltage or higher.
5. Input: Field selectable 120/208/240 VAC, 60 Hz, single-phase. A single input voltage is acceptable
in units >3,300W output.
6. Output: Constant voltage, electronically current limited with current rating sufficient to power the
continuous load and recharge a fully discharged battery within 24 hours. Combined line and load
regulation shall be +0.25% or better. Charging control shall include float mode plus manual and
automatic equalize modes. Output shall be filtered to NEMA PE-5 “battery eliminator”
performance specifications. Overvoltage protection shall be provided by a redundant control
mechanism and redundant actuators.
7. Battery check system: Shall periodically validate the battery’s ability to power the connected
system load at user-specified intervals, and include manual check button on the front panel. Remote
indication of a failed battery shall be via summary alarm contact or optional Modbus data
communication link.
8. Display: Digital metering of DC voltage, DC current, AC voltage and ambient temperature, plus
LED diagram showing charger and system status. Plain English text display of system status and
alarm messages.
9. Charger alarms: Summary Form C contact. Optional individual Form C alarm contacts for AC
fail, charger fail, low battery volts, high battery volts and ground fault. Contacts rated at 2A at 26
VDC or 0.25A at 125 VAC or VDC.
10. Data communications (optional): Complete charger alarms, meter data and configuration settings
shall be communicated via Modbus protocol supporting either RS-485 or 10Base-T Ethernet in
either RTU or ASCII modes. Remote control of charger operating mode and settings shall be
available from Modbus host. Remote control function shall be disabled until activated by installer
or end user. USB port and graphical PC-based setup software shall be provided to enable
Microprocessor charger specification, 16622 format
Revision C May 2011
configuration of charger and communications settings from a PC, deployment of pre-programmed
system settings, and update of system firmware.
11. Data logger: Data logging system shall regularly write records of alarms, input and output
voltages, user adjustments and all internal charger parameters to high capacity storage media for
later download and analysis. Graphical PC-based data analysis software shall be provided with the
charger.
12. Environment: Convection cooled with operating temperature –40F to +122F with overtemperature
protection. Humidity to 95%, non-condensing. Circuit boards shall be conformal coated to resist
corrosion. Transient protection to ANSI C37.90, ANSI/IEEE C62.41 Cat. B, and IEC 61000-6-2
shall be provided. Charger shall be tested to UBC seismic zone 4 and tested and seismic certified to
IBC 2000-2009 to an Sds value of 2.28g. [Charger shall be pre-approved and labeled to California
OSHPD seismic requirements.]
13. Parallel operation / load share (optional): Where two chargers are needed for redundancy a load
share system shall be provided that synchronizes all aspects of charger operation. Commands such
as mode settings or adjustment changes issued locally or remotely via network interface shall act
simultaneously on both chargers.
14. Warranty: Charger shall offer minimum of five-year warranty covering all charger components
including but not limited to power train, circuit boards, controls, protective devices, wire harnesses,
displays, and communication system.