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Issue Description
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SECTION 26 33 53 – THREE-PHASE UNINTERRUPTIBLE POWER SYSTEMS
PART 1 - GENERAL
1.01
RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General Conditions and Division
01 Specification Sections, apply to this Section.
B. Specifications throughout all Divisions of the Project Manual are directly applicable to this
Section, and this Section is directly applicable to them.
1.02
SUMMARY
A. General. The scope of UPS work for the project shall include but not be limited to:
1. UPS (Uninterruptible Power Systems) consisting of UPS module(s), battery
disconnect, batteries, battery cabinet, external maintenance bypass/distribution panel,
associated internal and connector wiring , a supervisory contact module, a Connect UPS
Web SNMP Xhub card and other accessories and options required for a complete and
operating systemwhich includes programing and other accessories.
B. The UPS shall automatically maintain AC power within specified tolerances to the critical
load, without interruption, during failure or deterioration of the normal power source. The work
shall include, but not be limited to, providing a system with the following equipment, functions
and operations.
1. The UPS system shall be a single module configuration with one UPS rectifier/inverter
module with battery string, static bypass and maintenance bypass, which allows the load
to be served from either the module or the utility without interruption.
2. UPS module shall be a static type UPS with a solid state inverter, rectifier/battery
charger, static bypass switch, maintenance bypass switch, protective devices,
synchronizing circuitry, batteries, battery cabinet, battery circuit breaker and other
accessories as specified herein or required.
3. A separate full external bypass distribution panel with interlocked UPS input, bypass and
output circuit breaker and UPS power distribution circuit breakers as shown or scheduled
on the drawings shall be provided.
4. The UPS shall be modular plug-in design that minimizes the time required to replace a
defective module. UPS modular design shall also be made up one or more detachable
modules or cabinets , preferably of the draw-out type and removable from the front. This
also provides basic for a scalable UPS system. Modularity and interchangeability of subassemblies and printed circuit board assemblies shall be optimized. UPS shall be
designed to permit ease of replacement of parts, test points, and terminal shall be such
that they are accessible for circuit checking, adjustment and maintenance without the
removal of any adjacent module or assembly.
5. All semiconductors in the module shall be protected by fast acting fuses so that the
failure of any one power semiconductor will not cause cascading failures. Each fuse shall
be provided with a blown fuse indicator on the control panel.
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6. UPS system shall have surge protection on the incoming power line side to protect unit
from transient voltages.
7. UPS with delta configuration units shall have filtered bypass system.
C. The manufacturer shall design and furnish all materials and equipment to be fully compatible
with electrical, environmental, and space conditions at the site. It shall include all equipment
to properly interface the AC power source to the intended load and be designed for
unattended operation.
1.03
REFERENCE STANDARDS
A. The latest published edition of a reference shall be applicable to this Project unless identified
by a specific edition date.
B. All reference amendments adopted prior to the effective date of this Contract shall be
applicable to this Project.
C. All materials, installation and workmanship shall comply with the applicable requirements and
standards addressed within the following references:
1. CSA 22.2, No. 107.3 – Uninterruptible Power Systems
2. ANSI/IEEE Std C62-41 – IEEE Guide for Surge Voltage in Low Voltage AC Power
Circuits
3. IEEE 485 Sizing of Lead Acid Batteries
4. NFPA 70 – National Electrical Code
5. NEMA PE 1 – Uninterruptible Power Systems (UPS), Specifications and Performance
Verification
6. NEMA 250-2008 – Enclosure for Electrical Equipment
7. UL 1008 – Transfer Switch Equipment
8. UL 1449 – Surge Protective Devices
9. UL Standard 1778 – Uninterruptible Power Systems
10. FCC Part 15, Class A - Radio Frequency Devices
D. The UPS system shall be ETL listed per UL Standard 1778 Uninterruptible Power Systems,
and shall be CSA Certified.
E. The Quality System for the engineering and manufacturing facility shall be certified to
conform to Quality System Standard ISO 9001 for the design and manufacture of power
protection systems for computers and other sensitive electronics.
1.04
QUALITY ASSURANCE
A. Manufacturer Qualifications. A minimum of ten years experience in the design, manufacture,
and testing of solid-state UPS systems is required.
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B. Factory Testing. Before shipment, the manufacturer shall fully and completely test the system
to ensure compliance with the specification. These tests shall include operational discharge
and recharge tests to ensure guaranteed rated performance.
1.05
SUBMITTALS
A. Shop drawing submittals shall include, but not be limited to, the following.
1. Completely identified and marked catalog cuts of all associated equipment and devices,
with all non-applicable items crossed out, or applicable devices clearly hi-lighted and/or
identified.
2. A written description of the system operation (written in this specification format), with all
exceptions and/or deviations clearly hi-lighted or identified.
3. Complete bill of material for all equipment.
4. A dimensioned drawing showing that the proposed equipment will fit in the space
allocated.
5. Complete control panel wiring diagrams, connection diagrams and schematics identifying
all terminals and field connections.
6. Written statement indicating a 1-year UPS warranty and service agreement as specified.
And a 4-year warrant on battery units.
7. Written battery warranty.
B. Operation and Maintenance Data.
1.06
PRODUCT DELIVERY, STORAGE AND HANDLING
A. Deliver the UPS in factory-fabricated water resistant wrapping, and mounted on shipping
skids.
B. Store in a clean, dry conditioned space. Maintain factory wrapping until installation and then
provide an additional heavy canvas or heavy plastic cover to protect units from dirt, water,
construction debris, and traffic.
C. Handle the UPS carefully to avoid damage to material components, enclosure and finish. The
UPS shall be provided with adequate lifting means.
1.07
SERVICE AND WARRANTY
A. UPS and battery manufacturer shall have an established network of service centers capable
of servicing the specified equipment. The nearest service center shall be within 50 miles of
the Project Site.
B. Service center and manufacturer's personnel shall be on call 24 hours a day, 365 days a
year. Factory train and certify personnel in the maintenance and repair of the equipment.
C. UPS Warranty. The UPS manufacturer shall warrant the unit against defects in workmanship
and materials for 1 years after initial start-up.
D. Battery Warranty. The battery manufacturer's standard warranty shall be passed through to
the end user. The manufacturer shall provide the manufacturing date on each battery unit.
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PART 2 - PRODUCTS
2.01
GENERAL
A. All materials shall meet or exceed all applicable referenced standards, federal, state and local
requirements, and conform to codes and ordinances of authorities having jurisdiction.
2.02
UPS AND UPS BATTERY MANUFACTURERS
A. APC
B. Liebert
C. Powerwear
D. Toshiba
2.03
SYSTEM DESCRIPTION
A. Design Requirements.
1. The UPS shall be sized to provide the minimum of kW/kVA, and additional 10% of what is
indicated on the drawings.
2. Input and output voltage to the UPS module and external maintenance bypass shall be
480 VAC, three phase, 3-wire.
3. Battery system shall have a capacity of to power the UPS system full kW output for at
least 30 minutes at 25°C.
B. Modes of Operation. The UPS system shall operate as an on-line reverse transfer system in
the following modes:
1. Normal. The critical AC load is continuously powered by the UPS inverter. The
rectifier/charger derives power from the utility AC source and supplies DC power to the
inverter, while simultaneously float charge the batteries.
2. Emergency. Upon failure of utility AC power, the critical AC load is powered by the
inverters which, without any switching, obtain power from the battery plant. There shall be
no interruption in power to the critical load upon failure or restoration of the utility AC
source.
3. Recharge. Subsequent to restoration of the utility AC power, the rectifier shall
automatically reactivate and provide the DC power to the inverter, simultaneously
recharging the system battery. This occurs automatically and without interruption to the
critical load.
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4. Bypass. In the event that the UPS system must be taken out of service for maintenance
or repair, the maintenance bypass switch shall transfer the load to the bypass source. In
the event that the UPS must be taken off line due to an overload condition or UPS failure,
the internal static bypass switch shall transfer the load to the bypass source. In both
cases, the transfer processes shall cause no interruption in power to the critical AC load.
A re-transfer from bypass to inverter shall be performed automatically in the event of
overload. A re-transfer shall be inhibited if satisfactory synchronization of the inverter
and bypass source is not accomplished. The use of the static switch shall not be
required during the manual or automatic re-transfer process, therefore increasing
reliability.
C. Performance Requirements. The maximum working voltage, current, and di/dt of all solidstate power components and electronic devices shall not exceed 75% of the ratings
established by their manufacturer. The operating temperature of solid-state component subassembly shall be greater than 75% of their ratings. Electrolytic capacitors shall be computer
grade and be operated at no more than 95% of their voltage rating at the maximum rectifier
charging voltage.
2.04
UPS MODULE
A. Rectifier/Charger. The term rectifier/charger shall denote the solid-state equipment and
controls necessary to convert AC to regulated DC for input to the inverter and for charging
the battery.
1. Input Current Total Harmonic Distortion. Reflected input current THD shall be less than
4.5% at full load input current.
2. AC Input Current Limiting. The rectifier/charger shall include a circuit to limit AC input
current to an adjustable level of 100% to 125% of the full input current rating. An optional
second circuit shall provide greater limiting (60% to 100%) when signaled by an external
contact (i.e., during operation of second UPS). AC input current limit is to be factory set at
115% for normal operation and 60 for optional second UPS operation.
3. Battery Charge Current Limiting. The rectifier/charger shall include a circuit to limit
battery charging current to an adjustable level of 1% to 25% of maximum battery
discharge current. An optional second circuit shall provide greater current limiting when
signaled by an external contact (i.e., during operation of generators). Battery charge
current limit is to be factory set at 10% for normal operation and 1% for generator
operation.
4. Input Current W alk-In. The rectifier/charger shall provide a feature that limits the total
initial power requirement at the input terminals to 20% of rated load, and gradually
increases power to 100% of full rating over the 15-second time interval. This walk-in shall
be graphically displayed on the front of the unit during start-up.
5. Input Circuit Breaker. The rectifier/charger shall have an input circuit breaker. The circuit
breaker shall be of the frame size and trip rating to supply full rated load and recharge
the battery at the same time. The circuit breaker shall have an under-voltage release to
open automatically when the control voltage is lost. Following are the recommended
breaker specifications.
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6. Short Circuit W ithstand/Interrupting Rating. The UPS system shall be suitable for use
with the available short circuit fault current shown on the drawings and the minimum
interrupting rating of circuit breakers associated with the UPS system shall be greater
than the available short circuit fault current shown on the drawing.
7. UPS Module Input Breaker Ratings. The minimum interrupting rating of circuit breakers
associated with the UPS systems shall be greater than the available short circuit fault
current shown on the drawing.
8. Fuse Protection. Each AC phase shall be individually fused with fast-acting fuses so that
loss of any semiconductor shall not cause cascading failures. Fuses shall be bolted to
bus bars at both ends to ensure mechanical and electrical integrity. The display panel on
the front of the unit shall indicate a blown fuse occurring on any phase of the rectifier.
9. DC Filter. The rectifier/charger shall have an output filter to minimize ripple current into
the battery. The AC ripple voltage of the rectifier DC output shall not exceed 0.5% RMS
of the float voltage. The AC ripple current in the battery during float operation shall not
exceed 2% RMS of the inverter full load DC current. The filter shall be adequate to
ensure that the DC output of the rectifier/charger will meet the input requirements of the
inverter without the battery connected.
10. Battery Recharge. In addition to supplying power for the load, the rectifier/charger shall
be capable of producing battery charging current sufficient to replace 95% of the battery
discharge power within ten (10) times the discharge time. After the battery is recharged,
the rectifier/charger shall maintain the battery at full charge until the next emergency
operation.
11. Battery Equalize Charge. An automatic equalize charge timer feature shall be provided to
automatically apply an equalize voltage to the battery after a 30 second or longer utility
outage. The duration of equalize charge time shall be adjustable from 0 to 72 hours.
Manual override shall be provided for the automatic equalize circuit.
12. Overvoltage Protection. There shall be DC over-voltage protection within each module so
that if the DC voltage rises to the pre-set limit, that UPS module shall shut down
automatically. Should the connected critical load exceed the capacity of the available online modules, the SCC (System Control Cabinet) will initiate an uninterrupted load
transfer to bypass.
13. Battery Configuration. The rectifier/charger shall function as specified with either a single
battery per Multi-Module Unit (MMU) or with a single battery plant for all MMU’s.
B. Inverter. The term inverter shall denote the equipment and controls to convert DC from the
rectifier/charger or battery to precise AC to power the load. The inverter shall be solid-state,
capable of providing rated output power, and for increased performance the inverter shall be
a pulse-width-modulated/6-step design and utilize insulated gate bipolar transistors (lGBT).
For reliability, the inverter must not utilize IGBTs in parallel.
1. Overload Capability. The inverter shall be able to sustain an overload across its output
terminals up to 150% with ±2% output voltage regulation. The inverter shall be capable of
at least 300% current for momentary short circuit conditions. If the short circuit is
sustained, the inverter shall disconnect automatically from the critical load bus. An
uninterrupted load transfer to bypass shall be automatically initiated, should the
connected critical load exceed the capacity of the available on-line modules.
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2. Output Frequency. The inverter shall track the bypass continuously providing the bypass
source maintains a frequency of 60 Hz ±0.5 Hz. The inverter will change its frequency at
0.1 Hz per second (adjustable 0.01 to 1.0 Hz per second) to maintain synchronous
operation with the bypass. This shall allow make-before-break manual or automatic
transfers. If the bypass fails to maintain proper frequency, the inverter shall revert to an
internal oscillator which shall be temperature compensated and hold the inverter output
frequency to 0.1% from the rated frequency for steady-state and transient conditions.
Drift shall not exceed 0.1% during any 24 hour period. Total frequency deviation,
including short- time fluctuations and drift, shall not exceed 0.1% from the rated
frequency.
3. Phase-to-Phase Balance. System logic shall provide individual phase voltage
compensation to obtain phase balance ±2% under all conditions including up to 50%
load unbalance
4. Fault Sensing and Isolation. Fault sensing shall be provided to isolate a malfunctioning
inverter from the critical load bus to prevent disturbance of the critical load voltage
beyond the specified limits. An automatic output circuit breaker shall be provided to
isolate a malfunctioning module from the critical load.
5. Load Sharing. For parallel operation, all inverter units shall automatically load-share at all
times. The output current of individual UPS modules shall be no more than +5%
unbalanced. The parallel load-sharing function shall be resident and redundant within
each MMU, and shall not require master oscillators or controls located in the System
Control cabinet to provide this function.
6. Battery Protection. The inverter shall be provided with monitoring and control circuits to
protect the battery system from damage due to excessive discharge. Inverter shutdown
shall be initiated when the battery voltage has reached the end of discharge voltage. The
battery end-of-discharge voltage shall be calculated and automatically adjusted for partial
load conditions to allow extended operation without damaging the battery. Automatic
shutdown based on discharge time is not acceptable.
C. System Control Console. The System Control Console shall denote the monitoring and
controlling circuitry for the system level functions. The system control logic shall be physically
berried and separated from the power section and high voltage hazards. The control panel
shall be located on the control section door.
D. System Power Section. The system power section shall be installed adjacent to the system
control console section. It shall contain the static bypass switch, the system bypass breaker
and the UPS output circuit breaker. The static bypass switch is the solid-state device that
automatically transfers the critical load to bypass without interruption if the UPS Modules
cannot supply continuous, regulated power to the critical bus. The static bypass switch shall
be of the energy-saving type. Once the load is transferred to the bypass line by the static
bypass switch, the motor-operated system bypass circuit breaker shall automatically close,
removing the static bypass switch from the power flow. The static bypass switch shall be
rated as either Momentary Duty, or Continuous Duty.
1. Momentary Duty Static Switch. The static bypass switch shall be rated to provide up to
1000% of rated capacity subcycle and up to 500% of rated load for three cycles. In
addition, the static bypass switch shall be capable of transferring full rated load from the
UPS module output to the bypass power source.
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2. Continuous Duty Static Switch. The static bypass switch shall be rated to provide up to
1000% of rated capacity subcycle and up to 500% of rated load for three cycles. The
static switch shall be capable of transferring the full rated load from the UPS module
output to the bypass power source. In addition, should a bypass circuit breaker fail, the
static switch shall be capable of continuously carrying the full rated load as long as
necessary without sustaining damage to itself. The static bypass switch shall be draw-out
mounted.
3. System Bypass and UPS Output Circuit Breakers. The system power section devices
shall include motor-operated circuit breakers, self protecting in case of a fault in the
distribution system. Series-rated devices shall not be used for this purpose unless
specifically approved by the Engineer.
E. System Bypass Operation. For times when maintenance is required or the inverter cannot
maintain voltage to the load due to sustained overload or malfunction, a bypass circuit shall
be provided isolating the inverter outputs from the critical bus and providing a path for power
directly from an alternate AC (bypass) source. The UPS control system shall constantly
monitor the availability of the system bypass circuit to perform a transfer. The system bypass
circuit shall consist of a static bypass switch, a UPS output circuit breaker to isolate the
inverters, and a system bypass circuit breaker in parallel with the static bypass switch. The
static bypass switch shall denote the solid-state device that can instantaneously connect the
alternate AC source to the load.
1. Manual Load Transfers. A manual load transfer between the inverter outputs and the
alternate AC source shall be initiated from the control panel. Manually initiated transfers
shall be make-before-break utilizing the UPS output and system bypass circuit breakers.
The static switch shall not be used for manual transfers.
2. Automatic Load Transfers. An automatic load transfer between the inverter outputs and
the alternate AC source shall be initiated if an overload condition is sustained for a time
period in excess of the system output capability or due to a malfunction that would affect
the output voltage. Transfers caused by overloads shall initiate an automatic retransfer of
the load back to the system only after the load has returned to a level within the rating of
the SCC (System Control Cabinet). The UPS system logic shall allow 0 to 5 retransfers
(adjustable) within anyone-hour period to prevent cyclical transfers caused by overloads
3. Momentary Overloads. In the event of a load current inrush or branch load circuit fault in
excess of the system rating, the static bypass switch shall connect the alternate AC
source to the load for up to 40 milliseconds. This pulsed parallel operation shall allow up
to 1000% of the nominal rated output current to flow for subcycle faults, and up to 500%
of normal rated output current for up to three cycles. Output voltage shall be sustained to
the extent the alternate AC source capacity pen-nits. If the overload condition is removed
in less than 40 milliseconds, the static bypass switch will turn off the load shall remain on
UPS system power. If the overload remains, then an automatic transfer to the alternate
AC source will be completed by closing the system bypass circuit breaker.
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4. Back Feed Prevention. The critical output bus shall be protected from the flow of excess
current through the static bypass switch path that may be caused by a low impedance
fault at the output of the UPS system. Each phase of the bypass circuit shall be protected
by individual fuses and circuit breakers. Blown fuse monitors shall indicate when a blown
fuse will prevent the static bypass switch path from being available for automatic
transfers. As required by UL 1778 and CSA, the static bypass switch shall not back feed
UPS power to the bypass distribution system while the UPS system is operating on
battery during a bypass source power outage. The purpose of this requirement is to
prevent the risk of electrical shock on the distribution system when the normal source of
power is disconnected or has failed. The static bypass switch shall be provided with
redundant bypass power outage sensing circuits and disconnects. The back feed
prevention system shall operate even if two component failures exist simultaneously. If a
shorted SCR is detected, the static bypass switch shall be isolated and an alarm
message shall be annunciated at the SCC (System Control Cabinet). The load shall
remain on conditioned and protected power after detection of a shorted SCR and
isolation of the static bypass switch.
F. Display and Controls.
1. UPS Control Panel. The term UPS control panel denotes that portion of the UPS
containing the display panel and control functions. Membrane switches shall be used to
select and execute operations from a Master Menu. The display and control panel shall
be mounted on the control section door. The display panel shall be 640 X 200 pixels,
Liquid Crystal Display, capable of providing a full 80 characters by 25 lines of information.
2. Logic. System logic and control programming shall be resident in Application Specific
Integrated Circuits. Rectifier, inverter, and system control logic shall be solid state.
Switches, contacts, and relays shall only be used to signal the logic system as to the
status of mechanical devices or to signal user control inputs. Relays shall be used to
isolate the logic for customer external status and alarm Signaling.
3. Metered Values. A microprocessor shall control the display and memory functions of the
monitoring system. All three phases of three-phase parameters shall be displayed
simultaneously. All voltage and current parameters shall be monitored using true RMS
measurements for accurate (±1%) representation of non-sinusoidal waveforms typical of
computers and other sensitive loads. The following parameters shall be displayed:
a.
Multi-Module Unit.
1)
Input voltage
2)
Input current
3)
Battery voltage
4)
Battery charging/discharging current
5)
Bypass input voltage
6)
Bypass input frequency
7)
Output voltage
8)
Output frequency
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9)
Load current
10)
Load kW
11)
Load kVA
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4. Power Flow Indications. A power flow diagram shall graphically depict whether the load is
being supplied from UPS, bypass, or battery and provide, on the same screen, the status
of the following components must be indicated on the UPS Module.
a.
AC input circuit breaker
b.
Battery circuit breaker
c.
Inverter output circuit breaker
d.
Bypass and UPS output circuit breakers
e.
Static Bypass Switch (Connected, Disconnected)
f.
Module Off Line
g.
Time to overload transfer/shutdown
5. Battery Status Indicator. A battery status indicator at the multi-module unit shall display
DC alarm conditions, shutdown voltages, the present battery voltage, and battery time
remaining during discharge. A graphical representation of the battery voltage during the
discharge shall be displayed. The graphical representation shall remain in the monitoring
system memory until the next discharge occurs and shall be available for review of the
battery performance.
6. Battery Cycle Monitor. The UPS shall have a BCM (Battery Cycle Monitor) built into
system firmware to document the cycle service of the battery. It shall collect and retain
information on the last 132 events that involved discharging the UPS battery.
a.
b.
Cycle Categories. Each battery discharge cycle is to be put into one of four
categories, depending on the duration of the event.
1)
0-30 seconds discharge
2)
31-90 seconds discharge
3)
91-240 seconds discharge
4)
Over 240 seconds discharge
Battery Cycle Data. The BCM shall collect and retain this information for each
discharge cycle.
1)
System time and date
2)
Event number
3)
Duration of cycle (seconds)
4)
Lowest DC bus voltage
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5)
Highest DC bus current
6)
KW carried by the batteries at the start of cycle
c.
Battery Environment Ambient Temperature. In addition, the BCM shall retain
summary information on the total number of events, the cumulative ampere hours
and the total discharge time since a given date.
d.
Data Storage Capacity. The BCM shall be capable of storing information for up to
132 discharge cycle events in its data buffer. W hen the buffer approaches its
capacity, a warning message shall be broadcast via terminal and modem
communication channels and a complete listing of all records (in order of
occurrence) shall be sent to the terminal port. Once the buffer is filled, new data
will replace the old on a First-In-First-Out basis as new cycles occur.
e.
Information Screens. The UPS operator shall be able to select either the BCM
Summary screen or one of four screens showing detailed information on anyone
of the four categories of discharge (0-30 seconds, 31-90 seconds, 91-240
seconds and Over 240 seconds).
f.
Summary Screen. The Summary screen will ordinarily show Total Number of
Discharge Cycles, Accumulated Battery Time, Accumulated Battery Amp Hours
(AH), Accumulated Battery Kilowatt Hours (kW h) and the current temperature at
the spot where the Battery Temperature Sensor has been positioned. During a
battery discharge event, the screen shall change to show information about the
current discharge cycle. The screen shall display Active Cycle Time in place of
Accumulated Battery Time and substitutes Active Battery AH and Active Battery
kW h for their accumulated counterparts.
g. Remote Data Gathering. The UPS shall allow this information to be collected
remotely, through the appropriate communications interface. Modbus (serial
communications protocol), BACnet (Building Automation and Control protocol),
TCP/IP (Transmission Control Protocol/Internet Protocol) shall be standard
protocols. Interface with existing monitoring system that is compatible with MD
Anderson current UPC monitoring system (Foreseer by DataTrax Systems), is
expected. Contractor is responsible to complete final terminations, programming,
alarming, and updating the graphics.
7. Alarms. Alarm conditions shall be reported at the UPS module unit. The control panel
shall report the alarms listed below. Each alarm shall be visually displayed in text form
and an audible alarm will sound for each alarm displayed.
a.
Input Fail
b.
Battery CB Open
c.
Battery Discharging
d.
Low Battery Warning
e.
Low Battery Shutdown
f.
DC Over-voltage Shutdown
g.
Inverter Fault
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h.
Overload Shutdown
i.
Hardware Shutdown
j.
Ambient Over-temperature
k.
Equipment Over-temperature
l.
Blower Failed
m.
Input Current Unbalanced
n.
Inverter Non-synchronized
o.
Load On Bypass
p.
Output Under-voltage
q.
Output Over-voltage
r.
Output Over/Under Frequency
s.
Overload Transfer
t.
Manual Reset/Retransfer
u.
Static Switch Unable
v.
Auto Transfer to Bypass
w.
Bypass Not Available
x.
Module Summary Alarm
y.
Emergency Off
8. UPS Module Alarm. W henever an alarm condition occurs at any multi-module unit, the
control panel at the System Control Cabinet shall activate the audible alarm and display
the faulted module number.
9. Controls. Provide the following functions.
a.
UPS/Bypass transfer pushbuttons
b.
AC output voltage adjust ±5%
c.
Battery circuit breaker trip
d.
Emergency shutdown pushbutton with protective cover
e.
Horn Off pushbutton
f.
Control Enable pushbutton
g.
Display control pushbuttons. Up, Down, Select
h.
Alarm Reset pushbutton
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Output Trip pushbutton (M)
10. Manual Procedures. Start-up, load transfers, and shutdown procedures shall be detailed
on the display panel in text and graphic form.
G. Self-Diagnostics.
1. Present Status Screen. The control system shall monitor and display all of the following
parameters in a Present Status screen:
a.
Input Voltage, Line-to-Line for all three phases
b.
Input Current for all three phases
c.
Bypass Voltage, Line-to-Line for all three phases
d.
Output Voltage, Line-to-Line for all three phases
e.
Output Current for all three phases
f.
Output Frequency
g.
Battery Voltage
h.
Battery Amps
i.
Load kVA
2. All three phases of the three-phase parameters shall be displayed simultaneously. All
voltage and current parameters shall be monitored using true RMS measurements for
accurate (±1%) representation of non-sinusoidal waveforms typical of computers and
other sensitive loads.
3. History Status File. A History Status file shall contain all of the information in the Present
Status screens except Load kVA. The control system shall maintain this information in
discreet 4 millisecond frames (1 millisecond resolution) updating memory on a First-InFirst- Out basis. This shall provide status recall of a period of at least 256 milliseconds
(64 frames) that is 160 milliseconds before the malfunction fault (40 frames), the fault
frame, and 92 milliseconds after the malfunction (23 frames).
4. Event History File. The control system shall maintain an event history of the alarm
conditions that have occurred during system operation. System memory shall be capable
of storing at least 128 events for recall.
5. System Status File. The control system shall monitor and display the total operating
hours of the UPS system.
6. Diagnostic Aids. The UPS shall be provided with the built-in diagnostics for
troubleshooting and circuit alignment aids.
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7. Remote Monitoring Capability. Modbus (serial communications protocol), BACnet
(Building Automation and Control protocol), TCP/IP (Transmission Control
Protocol/Internet Protocol) shall be standard protocols. Interface with existing monitoring
system that is compatible with MD Anderson current UPC monitoring system (Foreseer
by DataTrax Systems), is expected. Contractor is responsible to complete final
terminations, programming, alarming, and updating the graphics.
a.
The following digital alarms shall be available for display:
1)
Input Fail
2)
Bypass Not Available
3)
Overload
4)
Ambient Over-temperature
5)
Static Switch Disabled
6)
Battery CB Open
7)
Overload Shutdown
8)
DC Capacitor Fuse Blown
9)
Low Battery Shutdown
10)
DC Over-voltage Shutdown
11)
Auto Transfer to Bypass
12)
Auto Retransfer Primed
13)
Manual Reset/transfer
14)
Output Over/under Frequency
15)
Output Under-voltage
16)
Inverter Non-synchronized
17)
Rectifier Fuse Blown
18)
Hardware Shutdown
19)
Over-temperature Timeout
20)
Control Power Fail
21)
Battery Discharging
22)
Low Battery Warning
23)
Emergency Off
24)
Load on Bypass
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25)
DC Ground Fault
26)
Blower Failed
27)
Module #1 Alarm
28)
Module #2 Alarm
29)
Bypass Phase Sequence Wrong
30)
Output Over-voltage
31)
Overload Transfer
32)
Reverse Power
33)
Inverter Fault
34)
Equipment Over-temperature
35)
Input Current Unbalanced
36)
Static Switch Unable
b.
The UPS control communication circuits shall also download operational data for
analysis, upon request from a local or remote terminal. Information available for
display shall include all alarms and system parameters contained in the present
status, event history, and history status files.
c.
A set of eight (8) Form "C" remote alarm contacts shall be provided at the SCC
(System Control Cabinet) for customer use. These contacts shall indicate the
same information as listed in Remote Alarm Panel.
1)
Latch horn on and display alarm until manually reset
2)
Include this alarm in the summary alarm
3)
Freeze the history status file
4)
Annunciate horn while alarm is present Initiate modem auto-dial
5)
Delay action from this alarm for 0 to 9999 seconds
The UPS shall include appropriate communications interface at the SCC (System
Control Cabinet). Modbus (serial communications protocol), BACnet (Building Automation
and Control protocol), TCP/IP (Transmission Control Protocol/Internet Protocol) shall be
standard protocols. Interface with existing monitoring system that is compatible with MD
Anderson current UPC monitoring system (Foreseer by DataTrax Systems), is expected.
Contractor is responsible to complete final terminations, programming, alarming, and
updating the graphics. Alarms include but not limited to:
a.
DC Capacitor Fuse Blown
b.
Overload Transfer
c.
Low Battery Shutdown
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d.
Module Off Line
e.
DC Over-voltage Shutdown
f.
Overload Shutdown
g.
Auto Transfer To Bypass
h.
Reverse Power
i.
Output Under-voltage
j.
Rectifier Fuse Blown
k.
Output Over-voltage
l.
Inverter Fault
m.
Over-temperature Timeout
n.
Hardware Shutdown
o.
Emergency Off
UPS SYSTEM
A. General. The UPS system shall consist of a UPS module, external maintenance
bypass/output switchgear, battery disconnect breaker, battery cabinet and battery system.
1. The UPS module shall consist of a rectifier/charger and 3-phase inverter with associated
transformers.
B. System Protection. The UPS shall have built-in protection against surges, sags, and overcurrent from the AC source, overvoltage and voltage surges from output terminals of
paralleled sources, and load switching and circuit breaker operation in the distribution
system. The UPS shall be protected against sudden changes in output load and short circuits
at the output terminals. The UPS shall have built-in protection against permanent damage to
itself and the connected load for all predictable types of malfunctions. Fast-acting current
limiting devices shall be used to protect against cascading failure of solid-state devices.
Internal UPS malfunctions shall cause the module to trip off-line with minimum damage to the
module and provide maximum information to maintenance personnel regarding the reason
for tripping off line. The load shall be automatically transferred to the bypass line
uninterrupted, should the connected critical load exceed the capacity of the available on-line
modules. The status of protective devices shall be indicated on a graphic display screen on
the front of the unit.
C. UPS System Output.
1. Load Rating. 100% continuous load rating at 40 deg C for any combination of linear and
non-linear loads at the capacity of the connected modules or rating of the SCC (System
Control Cabinet), whichever is less (Load rating is subject to system circuit breaker
limitations). Ten times continuous load rating for three cycles without closing the bypass
breaker.
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2. Output Voltage Transients. Voltage transients shall be limited to a maximum deviation
from nominal system output volts of ±7% with recovery to within 1% of the nominal output
voltage within 50 milliseconds for each of the following conditions. Limits shall apply to
any UPS load within the UPS rating and frequency shall be maintained at 60 Hertz plus
or minus 0.1 hertz. The system shall not transfer to bypass under these conditions
(except item c below).
a.
100% load step.
b.
Loss or return of AC input power, momentary sags, surges or spikes on the input
to the UPS (all three phases or single phase).
c.
Uninterrupted transfer of the critical load to and from the UPS output and
bypasses power line (manually initiated or automatic).
d.
Dropping one MMU (Multi-Module Unit) off the UPS output power bus by manual
switching.
e.
Connecting one MMU onto the UPS output bus.
f.
Dropping one MMU off the UPS output power bus by internal failure.
g.
Trip a 100-ampere branch circuit breaker with a single phase fault.
D. Grounding.
1. The AC output neutral shall be electrically isolated from the MMU chassis. The MMU
chassis shall have an equipment ground terminal. Provisions for bonding the system
neutral to ground (customer-supplied cable) shall be provided in the enclosure containing
the system bypass and isolation breakers.
2.06
ENVIRONMENTAL CONDITIONS
A. The UPS shall be able to withstand the following environmental conditions without damage or
degradation of operating characteristics.
1. Operating Ambient Temperature. UPS 32°F to 104°F without de-rating. Battery 77°F
±5°F.
2. Relative Humidity. Up to 95%, non-condensing.
3. Audible Noise. Noise generated under any normal condition shall not exceed 72 dB
measured 5 feet from the UPS.
2.07
FABRICATION
A. Materials. All materials of the UPS shall be new, of current manufacture, high grade and shall
not have been in prior service except as required during factory testing. All active electronic
devices shall be solid-state. All power semiconductors shall be hermetically sealed. Control
logic and fuses shall be physically isolated from power train components to ensure operator
safety and protection from heat. All electronic components shall be accessible from the front
without removing sub-assemblies for service access.
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B. Wiring. Wiring practices, materials and coding shall be in accordance with the requirements
of the National Electrical Code, OSHA, and applicable local codes and standards. All bolted
connections of bus bars, lugs, and cables shall be in accordance with requirements of the
National Electric Code and other applicable standards. All electrical power connections shall
be torqued to the required value and marked with a visual indicator.
C. Conduit. Provisions shall be made in the cabinets to permit installation of input, output, and
external control cabling, using raceway or conduit. Standard models (without input isolation
transformers) shall provide for either top or bottom access to input and output connections
without requiring additional cabinetry. In conformance with NEC, connection cabinets/boxes
shall provide adequate space for bend radius. All copper bus bars for customer power
connections shall be tin plated for connection integrity.
D. Construction and Mounting. The UPS shall be in NEMA-1 enclosures, designed for floor
mounting. The UPS shall be structurally adequate and have provisions for hoisting, jacking,
and forklift handling. Maximum cabinet height shall be 79 inches. Maximum
UPS/Battery/Maintenance Bypass cabinet width shall not exceed 130 inches, including the
optional input filter, for any UPS modules up to and including 225 kVA.
E. Cooling. Adequate ventilation shall be provided to ensure that all components are operated
well within temperature ratings. The top-mounted blowers shall be redundant so that a single
blower failure will not cause temperatures to increase beyond acceptable limits.
F. Sensors. Temperature sensors shall be provided to monitor UPS internal temperature. Upon
detection of temperatures in excess of manufacturer's recommendations, the sensors shall
cause audible and visual alarms to be sounded on the UPS control panel. A separate room
ambient temperature sensor shall be provided to give an alarm if the temperature of the inlet
air to the UPS is above specified limits. Air filters shall be located at the point of air inlet and
be changeable without opening cabinet doors. No service clearance or ventilation shall be
required in the rear of the system.
2.08
BATTERY DISCONNECT BREAKER
A. Each UPS module shall have a properly rated circuit breaker (500 VDC) to isolate it from the
battery. This breaker is to be in a separate NEMA-1 enclosure installed within and accessible
through the cover of the battery cabinet. W hen open, there shall be no battery voltage in the
UPS enclosure. Each UPS module shall automatically be disconnected from the battery by
opening its breaker when the battery reaches the minimum discharge voltage level or when
signaled by other control functions. The UPS module control panel shall have a pushbutton to
trip the breaker.
2.09
BATTERY PLANT
A. General. Provide sealed; valve regulated lead calcium, maintenance-free battery system,
complete with all required components and accessories for a complete installation.
B. Electrolyte Immobilization. Electrolyte shall be immobilized by means of complete absorption
within micro-fine glass mat or similar bibulous material.
C. Alloys. Grids shall be manufactured of calcium lead alloys to assure long life and consistently
low gassing rate over the entire service life; all internal wetted parts shall be of similar nonantimonies alloy to preclude interfacial corrosion at the bonded area.
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D. Plates. Both positive and negative plates shall be of the flat pasted plate design to assure
highly reliable electrical performance throughout the life of the battery. Positive plates shall
be equipped with fibrous retention mats to inhibit the loss of active material as a result of
repeated cycling.
E. Terminals. All batteries shall include copper inserted terminal posts allowing connector torque
of 110 pound inches and copper-to-copper interface with the inter-cell connector (except for
flashing). Terminal posts shall be of sufficient strength to support normal inter-tier or interstep cabling without additional bracing.
F. Container. The cell container and cover shall be of a flame-retardant material with an oxygen
index of at least 28. The cell cover shall include a low-pressure release vent. All cells larger
than 0.25 kW/cell (15 minute rate to 1.67 volts per cell) shall include an integral flash arrestor.
G. Inter-Cell Connections. For each bolted connection, lead-plated copper connectors and
corrosion-resistant bolts shall be provided; interconnecting hardware shall be sized so as to
permit discharge at the maximum published rate while allowing no more than 30 mV of
voltage drop between adjacent units at the one-minute rate to 1.75 volts per cell (VPC). Along
with the necessary hardware, the supplier shall furnish terminal connection coating
compound if required by the battery manufacturer.
H. Battery Cabinet. The battery cabinet shall have ten-year designed life. Batteries shall be
installed in a separate battery cabinet that matches the UPS cabinet style to form an integral
system lineup. Battery cells shall be mounted on slide-out trays for ease of maintenance.
Cabinet racks shall have welded steel support frames and unitized rail construction to prevent
long-term warpage and resultant stresses on the cells and interconnections. All metallic
components which directly contact the battery shall be insulated by removable covers.
Casters and leveling shall also be provided with the battery cabinet for ease of installation.
When the application calls for the battery cabinet to be bolted to the UPS cabinet, an
interconnecting cable kit shall be available, precut and pre-lugged.
I.
2.10
Manufacturing Controls. Each cell shall be clearly identified as to cell type, voltage, and
capacity as well as manufacturing control group for future Quality Assurance traceability. All
cells in the battery shall be tested to verify 100% system capacity. The equipment shall be
designed and manufactured under a Quality Assurance Program which is controlled and
documented by written policies, procedures or instructions, and which shall be carried out
throughout the performance of the work. The Quality Assurance Program shall conform to the
requirements of ANSI N45.2, MIL-145208A, and MIL-Q-9858A.
ACCESSORIES
A. Remote Alarm Annunciator Panel. Provide manufacturer's standard flush mounted remote
alarm annunciator panel for the new UPS and the existing UPS.
B. Supervisory Contact Module. Provide manufacturer's standard supervisory contact module
for the new UPS and the existing UPS.
C. Connect UPS Web SNMP Xhub card. Provide a Connect UPS Web SNMP Xhub card panel
for the new UPS and the existing UPS.
2.11
EXTERNAL MAINTENANCE BYPASS/OUTPUT DISTRIBUTION PANEL
A. General. A separate external maintenance bypass/output distribution panel lineup shall be
provided with the UPS system. This panel shall contain interlocked UPS system input,
isolation and bypass and UPS power distribution circuit breakers.
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B. Isolation and Bypass. The interlocked UPS system isolation and bypass circuit breakers shall
allow the entire UPS system to be fully bypassed and isolated for maintenance while the
served load continues to be powered from the utility power source. The bypass and isolation
operations shall be make-before-break to provide uninterrupted power to the load during
bypass and isolation.
C. Short Circuit W ithstand/Interrupting Rating. The UPS external maintenance bypass
distribution panel shall be suitable for use with the available short circuit fault current shown
on the drawings and the minimum interrupting rating of circuit breakers associated with the
UPS external maintenance bypass distribution panel shall be greater than the available short
circuit fault current shown on the drawing.
D. Switchgear Construction. Refer to Section 26 24 16 Panelboards and other sections of this
Division for additional requirements related to distribution panel construction.
PART 3 - EXECUTION
3.01
INSTALLATION OF UPS SYSTEM
A. General. Install UPS where shown, in accordance with the manufacturer's written instructions
and recognized industry practices to ensure that the conditioners comply with the
requirements and serve the intended purposes.
B. Standards. Comply with the requirements of NEMA and NEC standards and applicable
portions of NECA's "Standard of Installation", for installation of switchgear.
C. Tightness. Torque terminals and tighten mechanical fasteners.
D. UPS Modules and Related Equipment Mounting. This equipment shall be mounted directly on
the raised floor. Coordinate additional raised floor pedestals required to support equipment, if
any, with the General Contractor.
E. Adjustment. Adjust operating mechanisms for free mechanical movement.
F. Finish. Touch-up scratched or marred surfaces to match original finish.
3.02
FIELD QUALITY CONTROL
A. The following inspections and test procedures shall be performed by factory-trained field
service personnel during the UPS system start-up.
1. Visual Inspection.
a.
Inspect equipment for signs of damage.
b.
Verify installation per drawings.
c.
Inspect cabinets for foreign objects.
d.
Verify neutral and ground conductors are properly sized and configured.
e.
Inspect all cell cases.
f.
Inspect each cell for proper polarity.
g.
Verify all printed circuit boards are configured properly.
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2. Mechanical lnspection.
a.
Check all control wiring connections for tightness.
b.
Check all power wiring connections for tightness.
c.
Check all terminal screws, nuts, and/or spade lugs for tightness
3. Electrical Inspection.
3.03
a.
Check all fuses for continuity.
b.
Confirm input and bypass voltage and phase rotation is correct.
c.
Verify control transformer connections are correct for voltages being used.
d.
Assure connection and voltage of the battery string(s).
UNIT START-UP
A. Energize control power.
B. Perform control/logic checks and adjust to meet specification.
C. Verify DC float and equalize voltage levels.
D. Verify DC voltage clamp and overvoltage shutdown levels.
E. Verify battery discharge, low battery warning and low battery shutdown levels.
F. Verify fuse monitor alarms and system shutdown.
G. Verify inverter voltages and regulation circuits.
H. Verify inverter/bypass sync circuits and set overlap time.
I.
Perform manual transfers and returns.
J.
Simulate utility outage.
K. Verify proper recharge.
3.04
MANUFACTURER'S FIELD SERVICE
A. Service Personnel.
1. The UPS manufacturer shall directly employ a nationwide service organization,
consisting of factory trained field service personnel dedicated to the start-up and
maintenance of UPS and power equipment.
2. The manufacturer shall provide a national dispatch center to coordinate field service
personnel schedules. One toll-free number shall reach a qualified support person 24
hours/day, 7 days/week, 365 days/year. If emergency service is required, telephone
response time shall be 20 minutes or less and on-site response time shall be four hours
or less.
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3. Two local customer engineers shall be assigned to the site with a regional office as a
backup. Daily automated reports shall be supplied to the regional office to document
failed equipment. Automatic escalation procedures shall notify the national support
manager if a site is not functioning within 24 hours.
B. Automated Site Monitoring.
1. The UPS manufacturer shall provide as an option an automated site monitoring service.
This service shall be staffed by a qualified support person 24 hours/day, 7 days/week,
365 days/year. At the detection of an alarm within the UPS, the SCC (System Control
Cabinet) shall initiate communications with the monitoring service. The monitoring
service shall be capable of downloading all existing UPS system alarms to allow dispatch
of a service engineer with repair parts.
C. Replacement Parts Stocking.
1. Parts shall be available through an extensive network to ensure around-the-clock parts
availability throughout the country.
2. Recommended spare parts shall be fully stocked by local field service personnel with
back- up available from national parts center and the manufacturing location. The
national parts center Customer Support Parts Coordinators shall be on-call 24 hours a
day, 7 days a week, and 365 days a year for immediate parts availability. Parts from the
national parts center shall be shipped within 4 hours on the next available flight out and
delivered to the customer's site within 24 hours.
3.05
UPS MAINTENANCE TRAINING
A. Maintenance training courses for customer employees shall be available by the UPS
manufacturer. This training is in addition to the basic operator training conducted as a part of
the system start-up.
B. The training course shall cover UPS theory, location of subassemblies, safety, battery
considerations and UPS operational procedures. The course shall include AC-to-DC
conversion and DC-to-AC inversion techniques as well as control, metering, and feedback
circuits to the Printed Circuit Board (PCB) level. Troubleshooting and fault isolation using
alarm information and internal self-diagnostics shall be stressed.
3.06
MAINTENANCE CONTRACTS
A. A complete offering of preventive and full-service maintenance contracts for both the UPS
system and battery system shall be available.
3.07
OPERATOR TRAINING
A. The manufacturer's startup representative shall provide minimum of (8) hours of operating
and maintenance training to the Owner's maintenance personnel. Training shall be provided
at times convenient to the Owner. Approved Operating and Maintenance Manuals shall be
available to the Owner prior to the training session.
END OF SECTION 26 33 53
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