SECTION 16260
1STATIC UNINTERRUPTIBLE POWER SUPPLY SYSTEM
2PART 1 - GENERAL
3 1.1 SUMMARY 4 A. Section Includes: 51. Uninterruptible power supply (UPS) system. 6
B. Related Sections include but are not necessarily limited to: 7
1. Owner’s - Bidding Requirements, Contract Forms, and Conditions of the Contract. 8
C. Reference Drawings: 9
1. Drawing EP-01 – Preliminary Electrical Equipment Layout. 10
1.2 QUALITY ASSURANCE 11
A. Referenced Standards: 12
1. Institute of Electrical and Electronics Engineers (IEEE): 13
a. C62.41, Recommended Practice on Surge Voltages in Low-Voltage AC Power Circuits. 14
2. Underwriters Laboratories, Inc. (UL): 15
a. 1778, Uninterruptible Power Systems. 16
B. Qualifications: 17
1. UPS system manufacturer shall: 18
a. Directly employ a nationwide service organization, consisting of factory trained field 19
service personnel available for start-up and maintenance of UPS and associated 20
equipment. 21
b. Have sales and service representatives local to the Denver area. 22
2. Manufacturer shall assure emergency service including compliance with the following: 23
a. One (1) toll-free number shall reach a qualified support person 24 HRS/day, seven (7) 24
days/week, 365 days/year. 25
b. Replacement parts shall be available through an extensive network to ensure around-26
the-clock parts availability throughout the country. 27
1.3 SUBMITTALS 28
A. Proposal Data: Submit the following information with proposal. Failure to provide complete data 29
may be cause for rejection. 30
1. Manufacturer and model. 31
2. Location of manufacture. 32
3. Nearest authorized service center. 33
4. Submittal schedule 34
5. Complete electrical ratings including: 35
a. Rated input current with battery charge 36
b. Maximum overcurrent protection (MOP) 37
6. Dimensioned plan and elevation drawings indicating all clearances required for equipment 38
operation and maintenance access. 39
7. Estimated total shipping weight. 40
B. Shop Drawings: 41
1. Submit six (6) copies of shop drawings for Engineer review prior to fabrication and 42
shipment. 43
2. Product technical data including: 44
a. Technical data on all components. 45
3. Fabrication and/or layout drawings. 46
a. Outline drawings of assembly. 47
b. One line diagrams and wiring diagrams for assembly and components. 1
c. Interconnection wiring diagrams. 2
C. Operation and Maintenance Manuals: 3
1. See Specification Section 01340 for: 4
a. The mechanics and administration of the submittal process. 5
b. The content of Operation and Maintenance Manuals. 6
D. Miscellaneous: 7
1. See Specification Section 01340 for requirements for the mechanics and administration of 8
the submittal process. 9
2. Qualifications. 10
1.4 SITE CONDITIONS 11
A. Ambient air temperature: -20 DegF to 100 DegF. 12
B. Altitude: 5700 FT above sea level. 13
C. Equipment shall fit within the space identified on the drawings without reducing clearances 14
below indicated values, code requirements, or manufacturer’s recommendations. 15
D. Seismic Criteria: 16
1. Equipment shall remain intact and operational during and following a seismic event meeting 17
the following criteria per IBC. 18
a. Ss = Mapped MCE, spectral response acceleration at short periods = 23%
19
b. S1 = Mapped MCE, spectral response acceleration at 1 second periods = 6%
20
c. Site class = D. 21
d. IE = Importance factor = 1.5
22
2. Include anchorage requirements and loadings for all equipment for these conditions with 23
shop drawings. 24
1.5 SYSTEM DESCRIPTION 25
A. Provide a UPS system that includes the following: 26
1. Inverter. 27
2. Rectifier/Battery charger. 28
3. Static bypass switch. 29
4. Integrated maintenance bypass switch. 30
5. Batteries and racks. 31
B. The UPS system shall be rated to provide power to the indicated load and have a battery charger 32
and batteries to maintain the load for 5 minutes. 33
1.6 BID ALTERNATES 34
A. Provide alternate pricing and dimensional and weight data for unit with 208/120V 3PH 4W 35
output from internal output transformer. 36
PART 2 - PRODUCTS
372.1 ACCEPTABLE MANUFACTURERS 38
A. Subject to compliance with the Contract Documents, the following manufacturers are 39
acceptable: 40
1. Uninterruptible power supply system: 41 a. APC. 42 b. Chloride. 43 c. Liebert. 44 d. Eaton Powerware. 45
B. Submit request for substitution in accordance with Specification Section 01640. 46
2.2 MANUFACTURED UNITS 1 A. Standards: 2 1. UL 1778. 3 2. IEEE C62.41. 4 B. Electrical Characteristics: 5 1. System capacity: 6
a. Each UPS system shall maintain a load of 80 kVA, at 0.9 power factor lagging, for 5 7
minutes. 8
2. Rectifier/battery charger input: 9
a. Voltage: 480 Vac, 3 PH, 3 wire plus ground. 10
b. Frequency: 60 Hz. 11
3. Bypass input: 12
a. Voltage: 480 Vac, 3 PH, 3 wire plus ground. 13
b. Frequency: 60 Hz. 14
c. Field selectable separate circuit or common to rectifier input. 15
4. Inverter output: 16
a. Voltage: 480 Vac, 3 PH, 3 wire plus ground. 17
b. Frequency: 60 Hz. 18
5. Bid Alternates: Integral output transformer. 19
a. Provide dimensional information and price quote to include output transformer. 20
b. Primary Voltage: delta-connected 480V. 21
c. Secondary Voltage: 208Y/120 Vac, 3 PH, 4 wire plus ground. 22
d. Frequency: 60 Hz. 23
6. System efficiency: 24
a. Make over-all efficiency, input to output, at least 90 percent with the battery fully 25
charged and the inverter supplying full-rated load. 26
C. Rectifier/Charger: 27
1. General: 28
a. The rectifier/charger shall contain solid-state equipment and controls necessary to 29
convert incoming AC power to regulated DC power for input to the inverter and for 30
battery charging. 31
b. The rectifier/charger shall be phase-controlled, solid-state SCR type with constant 32
voltage/current limiting circuitry. 33
2. Voltage range: 34
a. Plus 10 percent, minus 25 percent of nominal without battery discharge. 35
3. Frequency range: 36
a. Plus/minus 5 percent of nominal. 37
4. Inrush current: 38
a. 800 percent of full load current. 39
5. Input current limiting: 40
a. Include a circuit to limit AC input current to 125 percent of the full load input current. 41
6. Input harmonic suppression. 42
a. Design rectifier/charger to limit the input harmonic current feedback into the source to 43
a maximum of 5 percent Total Harmonic Distortion (THD) with nominal input voltage 44
and rated load on the inverter. 45
7. Power walk-in: 46
a. Provide rectifier/charger with a walk-in circuit that causes the unit to assume the load 47
gradually after the input voltage is applied. 48
b. Currents shall increase gradually from 20 percent to 100 percent over a 15 second 49
period after the battery open circuit voltage has been reached. 50
8. Input power factor: 51
a. Provide rectifier/charger with a minimum power factor of 0.9 lagging with nominal 52
input voltage and frequency and the inverter operating at full-rated load. 53
9. Overload protection and disconnection: 54
a. Provide an automatic input circuit breaker for rectifier/charger disconnection and 1
overload protection. 2
b. The overload devices shall not be activated when the rectifier/charger is started under 3
any of the operating conditions listed. 4
c. Loss of control logic power shall cause the circuit breaker to automatically trip, 5
isolating the rectifier from the utility. 6
10. Capacity: 7
a. Provide rectifier/charger with sufficient capacity to support a fully loaded inverter and 8
recharge the battery to 95 percent of its full capacity within 10 times the discharge time. 9
11. Fuse protection: 10
a. Provide for each AC phase so that loss of any individual rectifier semi-conductor shall 11
not cause cascading failures. 12
b. Bolt fuses to bus bars at both ends. 13
c. Display panel on front of unit shall indicate a blown fuse occurring on any phase of the 14
rectifier. 15
12. DC filter: 16
a. Provide an output filter to minimize ripple current into the batteries. 17
b. AC ripple current into battery shall not exceed 2 percent RMS. 18
c. Filter shall be adequate to insure that DC output of rectifier/charger will meet input 19
requirements of inverter without batteries connected. 20
13. Overvoltage protection: 21
a. Provide DC Overvoltage protection such that UPS will shut down if DC voltage rises to 22
the pre-set limit, and transfer to bypass. 23
14. Surge protection: 24
a. Rectifier/charger shall sustain input surges without damage per criteria listed in 25 IEEE C62.41, Category B. 26 D. Inverter: 27 1. General: 28
a. The inverter shall contain solid-state equipment and controls to convert DC power from 29
the rectifier/ charger or battery to regulated AC power for supporting critical load. 30
b. The inverter shall be transistorized, phase-controlled, pulse width modulated design 31
capable of providing the specified AC output. 32
2. Voltage regulation: 33
a. The inverter steady-state output voltage shall not deviate by more than plus/minus 34
1 percent due to the following conditions: 35
1) Input voltage variation. 36
2) Connected load. 37
3) Battery voltage. 38
4) Load power factor. 39
5) Ambient temperature variations. 40
6) Minimum to maximum DC bus voltage. 41
3. Voltage adjustments: 42
a. Provide inverter with a control to manually adjust the output voltage +/-5 percent from 43
the rated value. 44
4. Frequency control: 45
a. Control output frequency of the inverter by an oscillator. 46
1) The oscillator shall be temperature compensated and hold the inverter output 47
frequency to plus/minus 0.1 percent for steady state and transient conditions. 48
5. Frequency slew rate: 49
a. 1 Hz per second maximum. 50
6. Harmonic distortion: 51
a. The inverter shall provide harmonic neutralization and filtering necessary to limit the 52
total harmonic distortion in the output voltage to 5 percent and single harmonics to 53
3 percent over the entire load range. 54
7. Transient response: 55
a. The inverter transient voltage shall not exceed plus/minus 8 percent due to the 1
following system disturbances: 2
1) A 50 percent step load application and rejection with zero initial load or 3
100 percent initial load. 4
2) Transfer of rated load to the bypass source due to inverter internal fault. 5
3) Make output voltage return to within plus/minus 2 percent of the steady-state value 6
within 25 milliseconds. 7
8. Overload: 8
a. Make inverter capable of supplying currents and regulated voltage for overloads of 9
125 percent for 10 minutes. 10
b. Make inverter capable of supplying an overload current of 150 percent with plus/minus 11
2 percent voltage regulation for 30 seconds. 12
c. Make audible alarm indicate overload operation. 13
1) Make inverter transfer the load to bypass when the overload period expires. 14
9. Fault clearing and current limit: 15
a. The inverter shall be capable of at least 300 percent current for short circuit conditions. 16
1) If the short circuit is sustained, the load shall be transfered to the bypass source and 17
the inverter shall disconnect automatically from the critical load bus. 18
b. Provide inverter with current limiting protection to prevent damage to components. 19
10. Inverter DC protection: 20
a. Protect inverter by the following alarms and trips, independently adjustable for 21
maximum system flexibility. 22
1) DC overvoltage trip. 23
2) DC undervoltage warning alarm. 24
3) DC undervoltage trip. 25
11. Overcurrent protection: 26
a. Protect inverter from excessive overloads, including faults and reverse currents with 27
current limiting fuses. 28
12. Surge protection: 29
a. Provide inverter with built-in protection against undervoltage, overcurrent, and 30
overvoltage surges on the output caused by load transfer between the UPS and an 31
external synchronized bypass source. 32
E. Static Bypass Switch: 33
1. General: 34
a. Provide a static bypass switch as an integral part of the UPS. 35
b. Provide control unit with an automatic transfer circuit that senses the status of the 36
inverter logic signals and alarm conditions to provide an uninterrupted transfer of the 37
load to the bypass source without exceeding the transient limits specified herein when a 38
malfunction occurs in the UPS. 39
2. Static bypass switch: 40
a. Make static bypass switch a naturally commutated, high-speed static transfer device 41
rated to conduct full load current continuously. 42
3. Operation: 43
a. Connect static switch to the bypass source and assume the critical load when required 44
and provide the following features: 45
1) Uninterrupted transfer: 46
a) Make static bypass switch automatically assume the critical load after the 47
inverter logic senses one of the following conditions: 48
(1) Inverter overload period expired. 49
(2) Critical bus overvoltage or undervoltage. 50
(3) Battery protection period expired. 51
(4) UPS failure. 52
2) Uninterrupted automatic retransfer: 53
a) If the transfer control circuit is set for automatic retransfer, make UPS capable 1
of retransferring the critical load to the inverter when the overload is removed, 2
or the critical bus voltage stabilizes. 3
b) Make inverter automatically walk in smoothly to the output bus voltage, 4
parallel and share the load with the bypass source, and assume the load in the 5
"bumpless" manner prior to disconnection of the bypass source. 6
c) Do not use static switch during retransfers. 7
3) Transfer lockout: 8
a) The static switch logic shall not allow a transfer to bypass if one of the 9
following conditions exist: 10
(1) Bypass overvoltage/undervoltage (plus/minus 10 percent of nominal). 11
(2) Bypass frequency out of limits (plus/minus 5-1.0 Hz, adjustable). 12
(3) Bypass out of sync. 13
(4) Static switch disabled. 14
4) Uninterrupted manual transfer: 15
a) Provide a manually initiated make-before-break transfer for routine 16
maintenance purposes. 17
b) This transfer shall be automatically inhibited if the bypass source is outside of 18
the limits specified in paragraph (a) above. 19
4. Overloads: 20
a. 125 percent rated load continuously. 21
b. 200 percent for 30 seconds. 22
c. 2000 percent for two (2) cycles. 23
F. System Status and Control: 24
1. General: 25
a. Provide UPS with a system status panel to provide monitoring and control of the 26
complete system. 27
2. System metering: 28
a. Meter accuracy 1 percent or better. 29
b. Provide with the capability of monitoring the following system functions: 30 1) AC input voltage. 31 2) AC input current. 32 3) Input frequency. 33 4) Battery voltage. 34
5) Battery charging/discharge current. 35 6) AC output voltage. 36 7) AC output current. 37 8) AC output frequency. 38 3. Controls: 39
a. UPS start-up, shutdown, and bypass operations shall be accomplished by a single rotary 40
control switch. 41
1) An advisory display and menu-driven user prompts shall be provided to guide the 42
operator through system operation without the use of additional manuals. 43
2) Pushbuttons shall be provided to display the status of the UPS and to test and reset 44
visual and audible alarms. 45
4. System mimic: 46
a. A mimic panel shall be provided to depict a single line diagram of the UPS. 47
1) Indicating lights shall be integrated within the single line diagram to illustrate the 48
status of the UPS. 49
2) Two (2) LEDs located on the diagram shall indicate whether UPS input and/or 50
output power is present. 51
3) The diagram shall be color coded with the positions of the rotary control switch for 52
visual confirmation of the UPS operating mode. 53
5. System alarm messages: 54
a. Provide the following system alarm messages with visual and audible alarm 1
annunciation: 2
1) Input power out of tolerance. 3
2) Input phase rotation incorrect. 4
3) Incorrect input frequency. 5
4) Charger in reduced current mode. 6
5) Battery charger problem. 7
6) Battery failed test. 8
7) Low battery warning. 9
8) Low battery shutdown. 10
9) DC bus overvoltage. 11
10) Bypass frequency out of range. 12
11) Load transferred to bypass. 13
12) Excessive retransfers attempted. 14
13) Static switch failure. 15
14) UPS output not synchronized to input power. 16
15) Input power single phased. 17
16) Input voltage sensor failed. 18
17) Inverter leg over current in X-phase. 19 18) Output undervoltage. 20 19) Output overvoltage. 21 20) Output overcurrent. 22
21) System output overloaded. 23
22) Load transferred to bypass due to overload. 24
23) Overload shutdown. 25
24) Control error. 26
25) Critical power supply failure. 27
26) Load transferred due to internal protection. 28
27) External shutdown (remote EPO activated). 29
28) Fan failure. 30
29) Overtemperature shutdown impending. 31
30) Overtemperature shutdown. 32
6. Provide an Ethernet communications port with SNMP protocol to make all UPS status and 33
alarm information available over the Owner’s network. 34
7. A set of form "C" remote alarm contacts shall be provided for customer use. 35
a. These contacts shall indicate the following information: 36 1) Load on UPS. 37 2) Load on bypass. 38 3) Battery discharging. 39
4) Low battery warning. 40
5) System overload. 41
6) Ambient over temperature. 42
7) System summary alarm. 43
8) New alarm condition (for a second system alarm condition). 44
G. Enclosures: 45
1. House UPS in free-standing, dead-front enclosures with a welded steel framework. 46
a. Door shall be of 14 GA steel; framework shall be of 12 GA steel. 47
b. Mount instruments, status indicators, and controls at eye-level and accessible from the 48
front of the UPS module. 49
2. Provide forced-air cooling to ensure that components are operated within their 50
environmental ratings. 51
a. Equip blower motors with sealed bearings. 52
b. Provide redundant blowers so that a single blower failure will not cause temperatures to 53
increase beyond acceptable levels. 54
c. Equip air inlets with standard type filters, which are replaceable from outside the unit. 55
d. Protect all air inlet and exhaust openings by perforated or slotted metal guards. 1
3. Enclosure shall require front access only for ventilation and maintenance and shall be 2
capable of being installed against a wall with no spacing. 3
H. UPS Battery System: 4
1. The battery power pack shall include sealed, lead-acid valve regulated battery cells housed 5
in a separate cabinet that matches the UPS cabinet styling to form an integral system line-6
up. 7
2. Battery cells shall be mounted on slide-out trays for ease of maintenance. 8
3. A disconnect means shall be included for isolation of the battery pack from the UPS 9
module. 10
4. Casters and leveling feet shall also be provided with the battery power pack cabinet for ease 11
of installation. 12
I. Environmental Conditions: 13
1. Make UPS capable of withstanding any combination of the following environmental 14
conditions in which it must operate without mechanical or electrical damage, or degradation 15
of operating characteristics. 16
a. Ambient temperature: 17
1) Operating: +10 DegC to +40 DegC. 18
2) Non-operating and storage: -20 DegC to +70 DegC. 19
b. Relative humidity: 20
1) Operating: 0 to 95 percent for temperature from +10 DegC to +40 DegC, 21
excluding condensation due to temperature change. 22
2) Non-operating and storage: 0 to 95 percent, excluding condensation due to 23
temperature change. 24
c. Barometric pressure: 25
1) Operating: From sea level to 3,000 FT above sea level. 26
2) Non-operating and storage: From sea level to approximately 40,000 FT. 27
2.3 OPERATION 28
A. System Definition: 29
1. Make UPS automatically effect continuity of electric power within specified tolerances, 30
without interruption, upon failure or deterioration of the normal power supply. 31
2. Maintain continuity of electric power to the load for an emergency period with the inverters 32
supplied by the batteries, up to the specified maximum time or until restoration of the 33
normal power supply. 34
B. Modes of Operation: 35
1. Design UPS to operate as an on-line reverse transfer system in the following modes: 36
a. Normal: 37
1) Critical load is continuously supplied by the inverter. 38
2) Rectifier/battery charger derives power from the utility AC source and supplies DC 39
power to the inverter while simultaneously float charging the battery. 40
b. Emergency: 41
1) Upon failure of the utility AC power critical load is supplied by the inverter, which 42
without any switching, obtains its power from the storage battery. 43
2) There shall be no interruption to the critical load upon failure or restoration of the 44
utility AC source. 45
c. Recharge: 46
1) Upon restoration of the utility AC source, the rectifier/charger automatically 47
powers the inverter and simultaneously recharges the battery. 48
d. Bypass mode: 49
1) If the UPS must be taken out of service for maintenance or repair of internal 50
failures, the static switch transfers the load to the alternate source without an 51
interruption. 52
2) Retransfer of the load is accomplished by automatically synchronizing the UPS to 1
the alternate source, paralleling the inverter with the alternate source, and allowing 2
the inverter to ramp into the load and then disconnect the alternate source. 3
e. Downgrade: 4
1) If the battery only is taken out of service for maintenance, it is disconnected from 5
the rectifier/charger and inverter by means of a circuit breaker. 6
2) The UPS shall continue to function herein, except for power outage protection. 7
2.4 SOURCE QUALITY CONTROL 8
A. Factory Testing: 9
1. Each UPS shall be tested in modern facilities that have sufficient electrical capacity and 10
sufficient loads as required to complete the tests. 11
2. A test report showing that the equipment has passed the factory tests and has demonstrated 12
the capability to support the lad, as required by this specification, shall be submitted 13
promptly after completion of the tests. 14
3. The standard factory test procedures shall be used and shall not be limited to the following 15
test: 16
a. Control logic tests. 17
b. Utility and UPS sync tests. 18
c. Alarm and annunciation function tests. 19 d. Load tests. 20 e. Operation on battery. 21 f. Transfer tests. 22
PART 3 - EXECUTION
23 3.1 FIELD SERVICES 24A. System Start-up and Site Testing: 25
1. Inspections and test procedures shall be performed by factory trained field service 26
personnel. 27
2. Visual inspection: 28
a. Inspect equipment for signs of damage. 29
b. Verify installation per Drawings. 30
c. Inspect cabinets for foreign objects. 31
d. Verify neutral and ground conductors are properly sized and configured. 32
e. Inspect all cell cases. 33
f. Inspect each cell for proper polarity. 34
g. Verify all printed circuit boards are configured properly. 35
3. Mechanical inspection: 36
a. Check all control wiring connections for tightness. 37
b. Check all power wiring connections for tightness. 38
c. Check all terminal screws, nuts, and/or spade lugs for tightness. 39
4. Electrical inspection: 40
a. Check all fuses for continuity. 41
b. Confirm input and bypass voltage and phase rotation is correct. 42
c. Verify control transformer connections are correct for voltages being used. 43
d. Assure connection and voltage of battery strings. 44
5. Unit start-up: 45
a. Energize control power. 46
b. Perform control/logic checks and adjust to meet specification. 47
c. Verify DC float and equalize voltage levels. 48
d. Verify DC voltage clamp and overvoltage shutdown levels. 49
e. Verify battery discharge, low battery warning and low battery shutdown levels. 50
f. Verify fuse monitor alarms and system shutdown. 51
g. Verify inverter voltages and regulation circuits. 52
h. Verify inverter/bypass sync circuits and set overlap time. 1
i. Perform manual transfers and returns. 2
j. Simulate utility outage. 3
k. Verify proper recharge. 4
B. Commissioning 5
1. Provide services of factory-trained field service personnel to support verification testing of 6
UPS and related equipment/systems during field commissioning. 7
2. Include a minimum of 8 hours on site for field verification testing in addition to other 8
specified requirements. 9
3. Coordinate with Owner’s contractor and commissioning authority. 10
3.2 OWNER PERSONNEL TRAINING 11
A. Inform Owner seven (7) days in advance of starting system start-up and testing. 12
1. This will provide the owner the option of having an operating staff member witness the 13
start-up and testing. 14
2. This will also serve as a training tool for the staff member to see how the Field Service 15
engineer trouble shoots any problems that arise during the start-up and testing. 16
B. Upon completion of the start-up, the Field Service engineer will instruct operating staff in 17
proper operation and maintenance, of the installed equipment including hands-on training. 18
1. 4 HRS minimum. 19
