UNINTERRUPTIBLE POWER SUPPLY SYSTEMS

UNINTERRUPTIBLE POWER SUPPLY SYSTEMS
PART 1- GENERAL
1.01 RELATED DOCUMENTS
A. Drawings and general provisions of Contract, including General and Special
Conditions. apply to work of this Section.
B. The requirements specified in this section apply to all related sections in Division
No. 16. the requirements of all related sections, elsewhere in this division also
apply to this section unless specified to the contrary.
C. Basic electrical materials and methods, section 16050 applies to work of this
section.
D. Testing and commissioning, section 16950.
1.02 DESCRIPTION OF WORK
A. Work includes providing all materials, equipment, accessories, services and
tests necessary to complete, make ready, and set to work for operation by the
Owner, uninterruptible power systems, in accordance with Drawings and
Specifications.
1.03 SUMMARY
A. This Section includes a 3-phase, on-line, static-type, redundant, uninterruptible
power supply system (UPS), including the following principal component parts:
1. Rectifier/Battery Charger.

2. Battery.
3. Inverter.
4. Static Bypass Transfer Switch.
5. Maintenance Bypass Isolation Switch.
6. Static Transfer Switch.
7. Cables for D.C connections.
8- Connection to BMS system, including interface elements detailed in
BMS schedules and/or shown on the drawings.
B. Related sections: the following sections contain requirements that relate to this
section:
1. Division 16 "Wires and Cables".
2. Division 16 "LV circuit Breakers"
3.
C. The following shall be furnished along with the equipment:
ƒ{ Factory Testing.
ƒ{ Documentation.
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D. Each UPS system shall consist of a UPS module, a battery circuit breaker and
a battery. The AC output of the UPS module shall be connected to the clean
loads through the panelboards. The battery shall be connected to the DC input
of the UPS module through the battery circuit breaker. Normal (and generated)
source AC power shall be connected to the normal source AC input of the UPS
module.
1.04 DEFINITIONS
A. Rated Full-Load: load corresponding to full-rated kVA at 80 percent power
factor.
B. Static: containing no moving electrical parts and using solid-state components for
switching and control.
C. Transient: that part of the change in a variable such as voltage or current that
disappears during transition from one steady-state operating condition to another.
D. Uninterruptible Power Supply (UPS): a system that automatically provides power,
without delay or transients, during any period when the normal power supply is
incapable of performing acceptably.
F. Static Transfer Switch (STS).
UPS Module: The portion of the UPS system contains the rectifier/charger,
inverter, static bypass switch, maintenance bypass breaker, controls, monitoring
and indicators.
Rectifier/Charger: The portion of the UPS module converts the normal source AC
input power to DC power for the inverter input and for charging the battery.
Inverter: The of the UPS module, which converts DC power, from either the
rectifier/charger or the battery, to regulated and filtered AC power, which is
supplied to the critical load.
Static Bypass Switch: the portion of the UPS module automatically transfers the
critical loads, without interruption, from the inverter output to the bypass AC
power source in the event of an overload or degradation of the inverter¡¦s
performance.
Maintenance Bypass Breakers: the portion the UPS module is used to connect
the bypass AC power source to the critical loads while electrically isolating the
static bypass switch, rectifier/charger and inverter for maintenance purposes.
Battery: The battery system provides DC power to the inverter input when the
normal AC input power to the UPS module fails or in the event that the
rectifier/charger should fail.
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Battery Circuit Breaker: The device is used to electrically isolate the battery
from the UPS module for maintenance purposes and which provides over current
protection at the battery output.
Critical Loads: Those loads require regulated continuous AC power and are
connected to the output of the UPS module to panel boards as shown on the LV
schematic diagram.
1.05 QUALITY ASSURANCE
A. Manufacturer Qualifications: firms experienced in manufacturing equipment of
the types and capacities indicated with a record of successful in-service
performance for not less than five years as approved by the Engineer.
1. Service Center: UPS system manufacturer maintains a service center
capable of providing training, parts, and emergency maintenance and
repairs at the Project site with 4 hours maximum response time.
2. Local Representative: provide evidence that proposed equipment
manufacturer has a locally established and authorized organization which
can be called upon for professional advice and maintenance as may be
required, and which can immediately supply spare parts to support day to
day and emergency maintenance requirements. Failure to satisfy the
Engineer may disqualify a manufacturer.
3. Factory Testing: Before shipment, manufacturer to fully and completely
test the system to assure compliance with the specification including
operational discharge and recharge tests on at least a one-minute battery
plant to assure guaranteed rated performance.
B. Standard Compliance: Comply
Comply with NEMA, IEEE, EIA, IEC, BS or equal Standard.
C. Comply with NFPA 70, "National Electrical Code."
D. RITL Listing: listed and labeled systems as a factory-assembled unit.
E. RITL Listing: listed and labeled systems for use in computer rooms as complying
with NFPA 75, "Standard for Protection of Electronic Computer/Data Processing
Equipment."
1. Terms "Listed" and "Labeled": as defined in the "National Electrical
Code," Article 100.
2. Listing and Labeling Agency Qualifications: a " Recognized Inspection
and Testing Laboratory" (RITL) .
F. Comply with UL 1778, "Uninterruptible Power Supply Equipment.", and other
internationally recognized standards .
G. Single-Source Responsibility: obtain UPS system components from a single
manufacturer with responsibility for entire system.
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H. Maintenance Contract: obtain an undertaking by the equipment manufacturer and
his authorized local representative to provide an annual maintenance contract,
available after substantial completion of the work, covering routine service and
emergency service by trained employees, and to ensure supply of necessary
standard spare parts.
I. Local Representative: provide evidence that proposed equipment manufacturer
has a locally established and authorized organization which can be called upon for
professional advice and maintenance as may be required, and which can
immediately supply spare parts to support day to day and emergency maintenance
requirements. Failure to satisfy the Engineer may disqualify a manufacturer.
1.04 SUBMITTALS
A. Product data for products specified in this Section. Include data on features,
components, ratings, and performance.
B. Maintenance data for system and products for inclusion in Operating and
Maintenance Manual including the following:
1. Lists of spare parts and replacement components recommended to be stored at
the site for ready access, with current prices for operating period of 1000 hrs
and 2000 hrs.
2. Detailed operating instructions covering operation under both normal and
abnormal conditions.
C. Shop drawings detailing fabrication, internal and interconnecting wiring, and
installation of UPS system. Include dimensioned plan, elevation views, and
details of control panels. Show access and clearance requirements. Differentiate
between field-installed and factory-installed wiring and components. Indicate
weight and loading points
D. Product certificates signed by manufacturer of UPS system certifying the product
complies with specified requirements.
E. Qualification data for manufacturer specified in Quality Assurance Article to
demonstrate their capabilities and experience. Include list of completed projects
with project names, addresses, and names of Engineers and Owners, plus other
information specified.
F. Independent field-testing organization certificates, signed by Contractor,
certifying that the organization complies with the requirements specified in
Quality Assurance below.
G. Factory Test Plan: detailed list, schedule, or tabulation of events for each factory
test requirement. Include the following:
1. Description of input source and output loads to be used. Describe actions
required to simulate source load variation and simulation of various operating
conditions and malfunctions.
2. List of indications, parameter values, and system responses considered
satisfactory for each test action. Provide space for tabulation of actual
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observations during test.
3. Description of Instruments and Test Equipment Required: provide adequate
detail to make test plan reusable in the field for those tests required to be
repeated there.
H. Factory test reports evidencing compliance with specified requirements.
I. Field test reports for tests specified in Part 3.
1.06 WARRANTY
A. Special Project Warranty for Batteries: submit a written warranty, mutually
executed by manufacturer and the principal Installer, agreeing to replace UPS
system storage batteries that fail in materials or workmanship within the special
project warranty period specified below. This warranty will be in addition to, and
not a limitation of, other rights and remedies the Employer may have against the
Contractor under the Contract Documents.
1. Special Project Warranty Period for Batteries: 10 years
beginning on the date of Substantial Completion. A full warranty
applies to the first year of the period, and a pro rata warranty for
the last 9 years.
1.07 DELIVERY, STORAGE AND HANDLING
A. Deliver equipment in fully enclosed vans after specified environmental conditions
have been permanently established in spaces where equipment is to be placed.
B. Store equipment in spaces with noncondensing environments that are controlled
within manufacturer's ambient tolerances for nonoperating equipment.
1.08 EXTRA MATERIALS
A. Furnish extra materials matching products installed as described below, packaged
with protective covering for storage, and identified with labels describing
contents. Deliver extra materials to the Employer.
B. Fuses: 1 for every 10 of each type and rating, but not less than 1 of each.
C. Spare Parts: as recommended by Manufacturer upon certification by Engineer
and Employer.
PART 2 - PRODUCTS
2.01 MANUFACTURERS
A. Available Manufacturers: subject to compliance with requirements,
manufacturers offering products that may be incorporated in the Work include,
but are not limited to, the following:
1. Complete rectifier/charger - battery inverter system with
automatic static switch and maintenance by-pass circuit.
2. Remote monitoring panel.
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3. Interplant power and control cabling
4. Connection of normal a.c. power from assigned /disconnect
switch, as shown on the drawings.
B. Manufacturers: subject to compliance with requirements, specifications,
drawings and reguilations.
2.02 SYSTEM SERVICE CONDITIONS
A. Environmental Conditions Capabilities: operate in the following environmental
conditions without mechanical or electrical damage or degradation of operating
capability.
1. Ambient Temperature: 0 deg C to 50 deg C.
2. Relative Humidity: 0 to 100 percent, noncondensing.
3. Equipment is to be capable of operating under up to 55 deg. C ambient
conditions with derating factor of 1.25% per deg. C over 45„aC.
2.03 SYSTEM DESCRIPTION
A. System is to be interposed between normal a.c. power supply and critical load,
to secure a minimum period of continuity of no-break battery back-up for 15
minutes, unless otherwise specified, at full load in case of failure of normal a.c.
supply and maintain output voltage, frequency and phase deviation within
specified tolerances.
B. System is to maintained (continuously supplying load through the inverter),
with automatic no- break transfer to or retransfer from alternate source (bypass)
in case of failure or overload on rectifier- battery-inverter system.
C. System is to be of the programmable type, microprocessor based with CPU and
memory capabilities for storage of alarms, faults, status change, etc. The UPS
is to permit setting parameters for the environment and type of usage to be
specified by the Engineer, UPS is to be of the self-diagnostic type, equipped
with a self-test function to verify correct system operation. The self test is to
identify the parts of the UPS requiring repair in case of a fault. The system is
to be provided with multi-password levels to limit access to software and data.
D. Normal A.C. power supply will be available from one protected source fed
from either normal a.c. network or from alternate a.c. normal supply and inhouse
stand-by diesel generator set as shown on the Drawings. Characteristics
of output of generator set (when provided) and UPS system are to be
coordinated for best results. Study and advise on special requirements of
generator characteristic output and stability.
E. System Overall Efficiency: is not to be less than 93% at full load and 88% at
50% load.
2.04 SYSTEM OPERATION
A. Under normal conditions inverter(s) are to be synchronized and phase locked to
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normal a.c. supply. Upon loss of normal a.c. supply, battery is to continue supply
of no-break power to inverters, which then free-run on self- generated UPS
frequency reference. Upon restoration of normal a.c. supply, inverters are to resynchronize
to a.c. line, gradually (at slew rate), if frequency and voltage
deviation of normal a.c. supply is within preset limits specified.
B. Static transfer switch is to automatically transfer critical (100%) load from
inverter to by-pass source (which is normal a.c. supply) if:
1. Inverter output voltage characteristics fall outside specified limits.
2. Critical load exceeds overload rating of UPS.
3. Over temperature is sensed.
4. Manual (push button) command is given.
5. Transfer to bypass mode is to be inhibited, and an alarm initiated if
voltage, frequency and/or phase shift of bypass power are outside
acceptable tolerances.
C. Re-transfer of critical load from auto by-pass source to inverter (UPS mode) is
only to be possible under the following conditions:
1. Inverter output voltage characteristics return to within specified tolerances.
2. Original load current reduces to within rated full load capacity of UPS.
3. Re-transfer selector switch is in automatic position.
D. Lock-out feature is to inhibit re-transfer if by-pass source conditions are outside
preset tolerances or if UPS output and by-pass are not synchronized and phase
locked or if UPS output is not restored to normal conditions.
E. When normal power is restored following an outage, rectifier / charger is to
initially draw no power except for transformer in-rush current. After
approximately 15 seconds (walk-in time ) , input power requirements are to rise to
power level to drive critical load and recharge battery.
2.05 SYSTEM CHARACTERISTICS
A. Rectifier/ charger input:
Nominal input voltage : 400 V, 3 phase
4 wire, 50HZ
Voltage input variation : +10%, -15% from nominal
Frequency : +/-5% from nominal
Transformer exciting
current in rush : less than 600% nominal current
Power factor : 0.8 lagging at full load and nominal input voltage
Total harmonic feedback : maximum 3 % (total)
Current limiting : 115% max. of that required to operate inverters
and charge battery at full rated load, adjustment
possible between 100% and 125%
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Walk-in current in rush : 25% to 100% FLC in 15 seconds.
B. Rectifier/ charger output:
Float and equalize : adjustable, automatic, compatible
operation with battery
Regulation : +/-1% max. from 0-100% load
Ripple : +/-2% rms. (0 to 100% resistive
load) .
C. Static inverters:
Net system power output
Nominal : as specified or shown on the drawings with load
power rating factor 0.7 lag to 0.9 lead.
Nominal output : 400 V a.c., 50 HZ, voltage,
Voltage 3 phase, 4 wire, adjustable
Output voltage
regulation : +/- 5% of nominal
Unbalanced load
(3-phase system output
unbalance only) : 1% for each 10% of load
Phase displacement
(for 3-phase output
system only) : 120 deg. (+/-5 deg.)
at 100% load unbalance
Output voltage
waveform : 5% max. total harmonic
3% max. single harmonic
Frequency stability : normally synchronized to input line
frequency over +/-2% at +/- 0.5%
over full battery voltage variation,
load and p.f. range; slew rate not to
exceed 0.1 Hz/sec
Dynamic output
voltage tolerance
sudden full load
application or removal : +/-5% max. recovering
to within 1% in less than
30 milliseconds
Over-load rating : 125% for 10 minutes
150% for 60 seconds
1000% for 5 seconds
110% continuous.
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D. Automatic static transfer switch:
Transfer time : 150 micro-second (overlapping)
maximum
Total (sensing and transfer/
retransfer time : 2 milliseconds, maximum
Retransfer mode : automatic / inhibit (selectable)
Retransfer delay : 2 - 32 secs. in automode
(selectable)
Transfer point : +/-10% of nominal output
voltage (adjustable)
Retransfer point : +/-5% of nominal output
voltage (adjustable)
Transfer inhibit : +/-20% of nominal output
point voltage (adjustable)
E. If 1-phase UPS is specified for individual small equipment, it is to be 230V, 50
Hz input and output, on-line, continuously feeding the load through the inverter,
with fully rated static switch, and is to have same and equivalent specification as
required in this section for the 3-phase UPS¡¦s.
2.06 SYSTEM PERFORMANCE
A. Maximum Acoustical Noise: 65 dB, 'A' weighting emanuating from the system
under any condition of normal operation, measured 4 feet (1.2 m) from the nearest
surface of the enclosure.
B. Maximum Energizing Inrush: 6 times full-load current.
C. Maximum Output Voltage Transient Excursions from Rated Value: not to exceed
5% upon loss or restoration of a.c. input power.
2.07 SYSTEM COMPONENTS
A. Components: solid-state devices using semiconductor elements of the
hermetically sealed type. Devices include rectifier/battery charger, inverter, static
bypass switch, and system controls.
B. Enclosure: major components such as static bypass switch, rectifier, battery,
inverter, and maintenance bypass in separate compartments of enclosures or in
separate cabinets, depending on system size.
C. Control Assemblies: mount on modular plug-ins, arranged for easy maintenance.
D. Surge Suppression: protect UPS system input elements, rectifier/charger,
inverter, controls, and output components against voltage transients with surge
suppressors conforming to UL 1449, "Transient Voltage Surge Suppressors."
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E. Power Assemblies: mount rectifier and inverter sections and static bypass switch
on modular plug-ins, arranged for easy maintenance.
F. Design and fabricate internal supports for assemblies, subassemblies,
components, supports, and fastenings for batteries, to withstand static, anticipated
seismic forces, or both in any direction, with the minimum force value used being
equal to the equipment weight.
G. Sub-assemblies and components are to be mounted on pull-out and/or swing-out
trays where possible. Cables connecting to trays are to be sufficiently long and
flexible to allow easy access to all components . Where it is not possible to mount
components in pull-out or swing-out trays, they are to be easily accessible inside
the enclosure.
H. Materials and Parts: indicator lights are to be twin LED type, those denoting
blown fuse conditions are to be seen by operator without removing panels or
opening cabinet doors. Power connections and remote alarm and control wiring
are to be accessible at terminal boards. Power semi-conductors are to be fused.
Metal surfaces including copper and aluminium heat sinks and busbars are to be
treated with permanent protective coating. Electro-mechanical power devices and
relays are to be vacuum impregnated, insulated for maximum operating voltage
conditions, and enclosed in dust-tight enclosures. Cables are to be fire resistant
high temperature grade.
2.08 RECTIFIER / CHARGER UNIT
A. Rectifier charger unit is to have mainline circuit breaker , automatic with soft
start-up (walk-in) feature, using silicon controlled rectifiers (thyristors) with
control logic circuitry to control firing angles to thyristors to suit power output
requirements and protect against primary power surges, lightning transients,
under-voltage and over-voltage conditions. Output is to be passed through LC
filters to d.c. bus. Charger current is to be voltage regulated and current limited.
Where three-phase supply is involved, rectifier is to be at least six-pulse type.
B. Capacity: adequate to supply the inverter during full output load conditions and
simultaneously recharge the battery from fully discharged condition to 95 percent
of full charge within 10 times the rated discharge time for duration of supply
under battery power at full load, and maintain full charge at floating voltage until
next-operation.
C. Harmonic suppression inherent in the rectifier/battery charger design reduces total
harmonic content of the current drawn from the input power source by the system
to less than 10 percent for sources with X/R ratios from 2 to 30. This applies for
all load currents from 0 to 100 percent of full load.
D. Battery float charging conditions, in terms of voltage and charging current under
normal operating conditions, are within battery manufacturer's recommendations
for maximum battery life.
E. Input Isolation Transformer: a 3-phase, self-cooled, 2-winding, class H, dry type
with a grounded, insulated, metallic electrostatic shield installed between primary
and secondary windings.
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F. Input Power Factor: at least 0.85 lagging when supply voltage and current are at
nominal rated values and UPS is supplying rated full load.
2.09 BATTERY
A. Battery: high rate discharge, heavy duty, industrial , high impact resistant , clear
plastic encased, Nickel cadmium type cells. Ampere-hour rating is to be sufficient
for emergency period specified with all inverters operating at full rated output, to
a discharge limit of not less than 1.65 V per cell. Cells are to be normally
maintained at 2.25 V per cell. Guaranteed life is not to be less than 10 years, with
a capacity drop down to not less than 80% under normal expected service.
B. Battery Racks: batteries are to be enclosed in steel cabinets containing racks made
of steel, with plastic insulating rails at points of contact with battery cases. Racks
and cabinets are to be painted with electrolyte resistant paint. Cabinet are to be of
appropriate design for space in which installed, and directly accessible for
maintenance. Cables are to be rubber insulated electrolyte resistant type.
2.10 INVERTER
A. Type: inverter is to employ single-phase bridge circuit for single-phase output or
single -phase units connected on 3-phase bridges, using transistor or thyristor
circuits, fourth-generation technology (logic controlled pulse-width modulation ),
and complete with output transformer and filters. Inverter start-up is to be
automatic, to reach full voltage within milliseconds and deliver power to the load
within 2 seconds. Inverter is to start at any load including short-circuit.
B. Oscillator: is to operate and maintain output frequency of inverter within
specified tolerances, and be capable of synchronization and phase-locking to
normal power supply frequency. When inverter is phase-locked to normal power
supply, and latter fails, oscillator is to automatically revert to free running state
(quartz oscillator) and maintain specified limits.
C. Protection: UPS modules are to have built- in or inherent electronic current -
limiting protection against permanent self damage effective down to shortcircuits.
Fast acting, current limiting devices are to protect against failure of any
solid state component. Internal failure in any UPS module is to cause immediate
isolation from input and output by operation of static interrupters or causing shut
down of faulty module . Protection is to be provided against, but is not limited to,
the following:
1. Input over and under voltage and power line surges.
2. Output over voltage and voltage surges.
3. Sudden abnormal changes in output load conditions.
4. Short-circuits at output terminals.
5. Inverter and rectifier overcurrent.
6. Auxiliary control circuit overcurrent.
2.11 STATIC BYPASS SWITCH
A. Static Switch Type: fully rated, hybrid type, make-before-break transfer, solid
state device with logic thyristor assembly, isolatable or completely withdrawable
for maintenance. When signal to close switch is initiated, thyristors are to
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instantaneously conduct power to prevent deviations and breaks in load voltage
outside specified tolerances.
B. Switch Rating: continuous-duty at rated full load.
2.12 INDICATION AND CONTROL
A. General: group displays, indications, and basic system controls on a common
control panel on the front of the UPS enclosure.
B. Minimum displays, indicating devices, and controls include those in the lists
below. Provide sensors, transducers, terminals, relays, and wiring required to
support listed items. An audible signal sounds for all alarms in addition to the
visual indication.
C. Indications: labeled LED display.
D. Indications: plain-language messages on a liquid crystal or digital LED display.
1. Quantitative Indications: include the following:
i. Input voltage, each phase, line-to-line.
ii. Input current, each phase, line-to-line.
iii. Bypass input voltage, each phase, line-to-line.
iv. Bypass input frequency.
v. System output voltage, each phase, line-to-line.
vi. System output current, each phase.
vii. System output frequency.
viii. D.C. bus voltage.
ix. Battery current and direction (charge/discharge).
x. Elapsed time-discharging battery.
2. Status Indications: include the following:
i. Normal operation.
ii. Load on bypass.
iii. Load on battery.
iv. Inverter off.
v. Alarm condition exists.
3. Alarm Indications: include the following:
i. Bypass a.c. input overvoltage or undervoltage.
ii. Bypass a.c. input overfrequency or underfrequency.
iii. Bypass a.c. input and inverter out of synchronization.
iv. Bypass a.c. input has wrong-phase rotation.
v. Bypass a.c. input has single-phase condition.
vi. Bypass a.c. input filter fuse blown.
vii. Internal frequency standard in use.
viii. Battery system alarm.
ix. Control power failure.
x. Fan failure.
xi. UPS overload.
xii. Battery charging control faulty.
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xiii. Input overvoltage or undervoltage.
xiv. Input transformer overtemperature.
xv. Input circuit breaker tripped.
xvi. Input has wrong-phase rotation.
xvii. Input has single-phase condition.
xviii. Approaching end of battery operation.
xix. Battery undervoltage shutdown.
xx. Maximum battery voltage.
xxi. Inverter fuse blown.
xxii. Inverter transformer overtemperature.
xxiii. Inverter overtemperature.
xxiv. Static bypass switch overtemperature.
xxv. Inverter power supply fault.
xxvi. Inverter transistors out of saturation.
xxvii. Identification of faulty inverter section/leg.
xxviii. Inverter output overvoltage or undervoltage.
xxix. UPS overload shutdown.
xxx. Inverter current sensor fault.
xxxi. Inverter output contactor open.
xxxii. Inverter current limit.
4. Controls include the following:
i. verter on-off.
ii. UPS start.
iii. Battery test.
iv. Battery input circuit breaker.
v. Auto/ manual reset-test switch.
vi. Manual reset switch.
vii. Hybrid switch transfer test push-button.
viii. Re-transfer auto/ inhibit selector switch to allow automatic retransfer
of load to inverter after timed inverter of normal operation
and inhibit re-transfer of load to inverter until hybrid switch is in
auto-mode.
ix. Battery automatic/equalize recharge timer, 0-30 hours adjustable,
with automatic/ boost/ equalize switch (accessible to maintenance
personnel only and to be used only with manufacturer's
recommendation for type of battery specified).
x. Output voltage and frequency adjustment controls with locking
devices (accessible to maintenance personnel only).
xi. Indicator test / reset switch.
xii. Control power supply isolator (accessible to maintenance
personnel only).
xiii. Alarm test-silence-reset.
E. Analog Meters: accuracy within 2%.
F. Dry Form "C" Contacts: available for remote indication of the following
conditions:
1. UPS on battery.
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2. UPS on-line.
3. UPS load on bypass.
4. UPS in alarm condition.
G. Remote Status and Alarm Panel: labeled LEDs indicate conditions listed above.
Audible signal sounds for alarm conditions indication. Silencing switch in face of
panel silences signal without altering visual indication.
1. Cabinet and Faceplate: surface- or flush-mounted to suit mounting
conditions indicated.
2.13 REMOTE UPS CONTROL AND MONITORING SYSTEM
A. Description: make available the indication and control functions specified above
for the unit control panel at a remote microcomputer. Record power-line
transients and provides analytical capability. Include the items described below,
but do not include the remote computer or the connecting signal wiring. System
includes:
1. Modem and connectors for data transmission via RS-232 link and external
signal wiring to a computer.
2. Software that permits secure monitoring and controlling of UPS functions;
and provides on-screen explanations, interpretations, and action guidance
for monitoring indications. Include on-screen descriptions of control
functions and guidance for their use. Permit storage and analysis of
power-line transient records. Design for IBM-compatible microcomputer
systems.
2.14 MECHANICAL FEATURES
A. Enclosures: equipment is to be housed in a free-standing, well ventilated, totally
enclosed modular assembly with front accessible lockable doors, giving easy
access for maintenance, inspection and adjustments, and with provisions for
handling and lifting during and after installation. Enclosures are to be suitable for
industrial, tropical environments, protection IP 21 to IEC 144, of galvanized sheet
steel construction treated against corrosion and with light grey RAL7032 baked
paint or epoxy finish to approved standard.
B. Ventilation: for units rated over 5 kVA, an integral, forced-air, cooling system is
to be provided in each UPS module to remove dissipated heat efficiently, and
ensure components operate within environmental ratings. Air is to enter bottom
of cabinet through replaceable filters, and exhaust through the top. At least two
fans are to be provided for ventilating each enclosure. No degradation of
performance is to occur in the event of a single fan failure. Temperature sensors,
mounted on semi-conductor heat sinks, are to initiate alarm if maximum working
temperature is exceeded.
2.15 SOURCE QUALITY CONTROL
A. Factory test complete UPS system, including battery, prior to shipment. Include
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the following tests:
1. Functional test and demonstration of all functions, controls, indicators,
sensors, and protective devices.
2. Full-load test.
3. Transient load response test.
4. Overload test.
5. Power failure test.
6. Efficiency test at 50-percent, 75-percent, and 100-percent load.
B. Observation of Test: provide a 2-week advance notice of tests and opportunity
for observation of test by Owner's representative.
C. Report test results on "Factory Test Plan" specified in Part 1 of this Section.
PART 3 - EXECUTION
3.01 INSTALLATION
A. Install system components on 4-inch-high (100-mm-high) concrete housekeeping
bases. Cast-in-place concrete, reinforcing, and formwork to be specified by civil
engineer. Install systems according to manufacturer's printed instructions.
B. Maintain minimum working space at equipment according to manufacturer's shop
drawings.
C. Connections: interconnect system components. Make connections to supply and
load circuits according to manufacturer's wiring diagrams and as indicated.
D. Manufacturer's Field Services: arrange and pay for the services of a factoryauthorized
service representative to supervise the installation, connection, tests,
and adjustment of the unit.
3.02 IDENTIFICATION
A. Identify components according to Division 16 Section "Electrical Identification."
B. Identify each battery cell individually.
3.03 FIELD QUALITY CONTROL
A. Supervised Adjustment and Pretesting: under supervision of factory-authorized
service representative, pretest system functions, operations, and protective
features. Adjust to ensure operation complies with specifications. Load the
system using a variable load bank simulating kVA, kW, and power factor of loads
for which unit is rated.
B. Tests: provide the services of a qualified testing agency to perform the tests listed
below according to manufacturer's recommendations upon completion of
installation of system. Load the system using a variable load bank simulating
kVA, kW, and power factor of load for which unit is rated. Use instruments that
have been recently calibrated according to approved standards.
1. Simulation of malfunctions to verify protective device operation.
2. Tests of duration of supply on emergency, demonstrations of low-battery
16
voltage shutdown, and transfers due to normal source failure and
restoration.
3. Tests of harmonic content of input and output current under 25 percent, 50
percent, and 100 percent of rated load.
4. Tests of voltage output under specified transient-load conditions.
5. Tests of efficiency at 50-percent, 75-percent, and 100-percent rated load.
6. Functional Tests of Remote Status and Alarm Panel.
7. Functional Tests of Battery-Monitoring System.
C. Retest: correct deficiencies and retest until specified requirements are met.
3.04 FACTORY TEST:
1. The Contractor shall be responsible for performing the UPS factory test.
2. The UPS factory test shall be performed at the country of origin the
presence of the Client's, Electrical Consultant and Engineer's
representatives team. the team will comprise three representatives all
expenses are to be borne by the Contractor.
3. the contractor shall provide to the engineer a certified factory test report
3.05 CLEANING
A. Upon completion of installation, inspect system components. Remove paint
splatters and other spots, dirt, and debris. Repair scratches and mars of finish to
match original finish. Clean components internally using methods and materials
recommended by manufacturer.
3.06 DEMONSTRATION
A. Training: arrange and pay for the services of a factory-authorized service
representative to demonstrate adjustment, operation, and maintenance of the
system and to train Owner's personnel.
B. Conduct a minimum of 8 hours of training to client personell.
.
C. Schedule training with at least a 7-day advance notification.
3.07 COMMISSIONING
A. Battery Equalization: equalize charging of battery cells according to
manufacturer's instructions. Record individual cell voltages.
END OF SECTION 16264