26 33 50 Static Uninterruptible Power Supply System

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 1

PART 1 - GENERAL

1.1 SUMMARY

A. This Specification describes a 3 phase continuous duty, on line, solid state uninterruptible power system, hereafter referred to as the UPS. The UPS operates in conjunction with the existing building electrical system to provide power conditioning, back up and distribution for critical electrical loads. The system consists of the UPS module, one or more valve-regulated battery packs, and other features as described in this specification.

1.2 SYSTEM DESCRIPTION

A. UPS Module Components: The UPS module consists of the following main components:

1. Rectifier/charger.

2. Static inverter.

3. Bypass.

4. Output isolation transformer.

5. Control panel.

6. Monitor panel.

7. Communication panel.

B. UPS Main Components: In addition to the UPS module, the UPS consists of the following main components:

1. (OPTION) Low input harmonic current distortion filter.

2. (OPTION) Battery cabinets.

3. (OPTION) Input isolation transformer module.

4. (OPTION) Output power distribution module.

C. Modes of Operation: The UPS operates as an on-line, fully automatic system in the following modes:

1. Normal: Continuously supply the critical load by the inverter. The rectifier/charger derives power from the commercial AC source and supplies DC power to the Inverter while simultaneously float-charging the battery.

2. Battery: Upon failure of the commercial AC power, the critical load continues to be supplied by the Inverter, which obtains power from the batteries without any operator intervention. No interruption to the critical load upon failure or restoration of the commercial AC source is allowed.

3. Recharge: Upon restoration of the AC source, the rectifier/charger recharges the batteries and simultaneously provides power to the inverter. This is an automatic function and causes no interruption to the critical load.

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 2

4. Bypass: If the UPS must be taken out of service for overload, load fault, or internal failures, the static bypass switch automatically transfers the critical load to the commercial AC power. Provide automatic return from bypass mode to normal mode of operation. No-break transfer to and from bypass mode with capability of being initiated manually, without operation of the static switch, without operation of the static switch.

1.3 REFERENCES

A. UL 1778 - standard for Uninterruptible Power Supply Equipment. Listed Equipment (US and Canada).

B. NEMA PE-1 -Uninterruptible power systems standard.

C. IEC 801-2 - Electromagnetic Compatibility For Industrial-Process Measurement and Control Equipment.

D. IEC 146.4 - Methods of specifying performance and test requirements of uninterruptible power systems.

E. ANSI C62.41, Categories A and B - Recommended practice on surge voltages in low voltage power circuits.

F. FCC Rules and Regulations 47, Part 15, Subpart J, Class A -Certified compliance.

1.4 SUBMITTALS

A. Supply the UPS with Sufficient Documentation, Including the Following Manuals:

1. Operation Manuals: Submit multiple copies of the operation manual as required by Division 01 of this Specification. The operation manual possesses sufficient detail and clarity to enable the Owner's technicians to understand and operate the system equipment. The manuals describe the UPS in full by including the following major items:

a. Operating procedures.

b. Performance data and technical data.

c. General description.

d. UPS module description.

e. Communications capability.

f. Battery description.

g. Accessory description.

2. Installation Manual: Submit multiple copies of the installation manual as required by Division 01 of this specification. Installation manual possesses sufficient detail and clarity to enable the Owner's technicians to install the system equipment. Supply the following Drawings and data sheets with the submittal:

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 3

a. Receiving and Installation Instructions.

b. System one-line drawings.

c. Equipment outline drawings.

d. Interconnection drawings.

e. Battery wiring diagram.

f. Accessory wiring diagrams.

1.5 QUALIFICATIONS

A. Manufacturer:

1. Minimum of 10 years experience in the design, manufacture and testing of solid-state, UPS systems.

2. ISO 9001 certification for engineering/R&D, manufacturing facilities and the field service organization.

1.6 ENVIRONMENTAL REQUIREMENTS

A. The system withstands any combination of the following external environmental conditions without operational degradation:

1. Operating Temperature: 0C to plus 40C (32F to 104F) without derating.

2. Storage Temperature: Minus 20C to plus 70C (minus 4F to 158F). (Prolonged storage above plus 40C (104F) will cause rapid battery self-discharge.)

3. Relative Humidity (operating and storage): 95 percent maximum noncondensing.

4. Elevation: 5000 ft. (1500 m) maximum at 40C without derating.

5. Acoustical Noise: Noise generated by UPS under normal operation not to exceed

65dBA at 1 meter from any operator surface, measured at 25C (77F) and full load.

B. EMI Suppression: The UPS meets FCC Rules and Regulation 47, Part 15, Subpart J, for Class A devices.

C. Electrostatic Discharge (ESD): The UPS meets IEC 801-2. The UPS withstands up to 25KV without damage and with no disturbance or adverse effect to the critical load.

D. Efficiency: 91 percent at full unity power factor load and nominal input voltage. The input autotransformer may be expected to reduce the system efficiency by 2 percent;

the input isolation transformer may be expected to reduce the system efficiency by 3 percent.

E. Input Surge Withstand Capability: ANSI C62.41, Categories A and B (6KV).

1.7 RELIABILITY

A. Reliability: Observed equipment mean-time-between-failure (MTBF)of at least 2 years. With the automatic bypass, the system-mission reliability of a UPS is greater than 150,000 hours.

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 4

1. The UPS features redundant power supplies. Power to the control power supplies originates from the rectifier/charger input, bypass input and system output. In the event one of the power supplies fail, the UPS continues to operate in normal mode without load derating. Enunciate a failed power supply condition on the monitor panel and available remotely through the RS232 port. A failure alarm automatically clears when the failed power supply is replaced.

2. The UPS features redundant cooling fans. In the event one of the fans fail, the UPS continues to operate in normal mode without load derating. Enunciate a failed cooling fan condition enunciated on the monitor panel and available remotely through the RS232 port. A failure alarm automatically clears when the failed fan is replaced.

3. The UPS utilizes high-reliability wiring and keyed connectors. The UPS does not feature ribbon cables.

4. Feature only four control printed circuit boards in the UPS design.

5. Power cable connections to transformers and secure chokes with permanent crimps which require no maintenance or periodic retorquing.

B. Maintainability: Calculated and demonstrated mean-time-to-repair (MTTR) not to exceed 30 minutes, including time to diagnose the problem and replace the subassembly.

1.8 SAFETY

A. List the system in accordance with UL 1778.

1.9 WARRANTY

A. System: No less than 24 months after acceptance and must include all costs including repair, parts, labor, travel and living expenses for the manufacturer's service personnel, within the 48 contiguous United States.

B. Battery: The UPS manufacturer warrants the battery on a prorated basis for 10 years to deliver no less than 80 percent of its rated capacity, provided the prevailing ambient temperature of the battery area does not exceed 25C (77F).

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Powerware 9355 series or approved equal.

2.2 UNINTERRUPTIBLE POWER SUPPLY

A. Rectifier/Charger: Converts incoming AC power to regulated DC output for supplying the Inverter and for charging the battery. Six pulse, phase controlled, solid-state

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 5

design. The modular design of the UPS design permits easy removal of the rectifier/charger without removal of any other assembly.

B. Inverter: Features insulated gate bipolar transistors (IGBTs) in a 3 leg, pulse-width-modulation (PWM) design. The Inverter also has the following features:

1. Capable of providing the specified quality output power while operating from any DC source voltage (rectifier or battery) within the specified DC operating range.

2. The modular design of the UPS permits easy removal of each phase of the Inverter and DC electrolytic capacitors without removal of any other assembly.

3. Provide uninterrupted manual transfers from the control panel. Provide uninterrupted manual transfers to bypass and from bypass that is possible with the inverter logic, without using the emergency bypass control logic or the static switch. During manual transfers to bypass mode, the Inverter must verify proper bypass operation before transferring the critical load to the bypass.

C. Batteries: Valve regulated, high-rate discharge, lead-acid cells. Expected Life: 200 complete full load discharge cycles when operated and maintained within Specifications.

D. Bypass: Serves as an alternate source of power for the critical load when performing maintenance on the UPS or when a failure prevents operation in normal mode. The bypass consists of a naturally-commutated static switch, for high-speed transfers, and wraparound switchgear. Static Switch: Plug-in type construction, featuring an integral contactor to provide static switch backfeed protection during utility outages. The modular design of the UPS permits removal of the static switch without removal of any other assembly. The static switch is necessary for controlling emergency make before break transfers. The bypass features the following transfer and operational characteristics:

1. Automatic initiated uninterrupted transfers to bypass for the following conditions:

a. Output overload period expired.

b. Critical bus voltage out of limits.

c. Over temperature period expired.

d. Total battery discharge.

e. UPS failure.

2. Uninterrupted automatic retransfer takes place whenever the inverter is capable of assuming the critical load.

3. Provide inhibited uninterrupted automatic retransfers for the following conditions:

a. When transfer to bypass is activated manually or remotely.

b. In the event of multiple transfer-retransfer operations, the control circuitry limits "cycling" to three operations in any 10 minute period. The fourth transfer locks the critical load on the bypass source.

c. UPS failure.

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 6

4. Inhibit transfers and retransfers for the following conditions:

a. Bypass voltage out of limits (plus or minus 10 percent of nominal).

b. Bypass frequency out of limits (plus or minus 0.5 Hz; adjustable, factory set).

c. Bypass out of synchronization.

d. Bypass phase rotation/installation error.

5. Manually energize the bypass with a key switch on the control panel. No additional control logic required.

6. The rectifier/charger input circuit breaker has no effect on bypass operation.

E. Monitoring and Control Components: The following components provide monitor and control capability:

1. Microcontroller Driven Circuitry: Embedded 20MHZ, 16 bit, single chip controller.

2. Monitor panel with status indicators.

3. Video alarm and metering display.

4. Building alarm monitoring.

5. Input circuit breaker.

6. Inverter and bypass contactors.

7. RS-232 (EIA/TIA-232) and RS-485 communication ports.

F. Output Isolation Transformer: Provide an output isolation transformer featuring two primaries (an Inverter Delta winding and a bypass Wye winding) and a single secondary (a Wye winding to the system output terminals). The Wye/Wye transformation of the bypass through the transformer produces a zero degree phase shift. This transformer provides isolation between the primaries and secondary and qualifies the UPS as a separately derived source when in Normal and bypass modes.

G. Battery Contactor: Provide a 2 pole contactor for disconnecting the battery from the rectifier output and the Inverter input. Locate a contactor enable switch on the UPS control panel. With the UPS in bypass mode, this contactor permits the rectifier, inverter, DC capacitors and associated control boards to be safely serviced without opening a battery breaker external to the UPS module.

H. Battery Management System (BMS):

1. Provide a battery management system with the following features:

a. The BMS provides battery time available, or percent remaining, while operating in normal mode and battery mode. Display realtime battery time available information, even under changing load conditions.

b. The BMS automatically analysis the UPS battery during a user defined periodic test cycle (quarterly, monthly, and the like). During the test, the rectifier/charger does not deenergize, but shares load with the battery.

Should the battery be weak or defective, the BMS detects and enunciates

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 7

the battery failure condition without transferring the critical load to bypass.

c. If a utility outage occurs while a test is in progress, discontinue the test and subsequently conduct at the next programmed interval. The occurrence of the periodic test is user programmable for day, date and time.

d. The BMS records and displays the pass/fail status, battery voltage and health indicator value of the previous thirty periodic tests.

e. The BMS provides battery health information in the form of a health indication value.

f. The BMS enunciates a user programmable battery time remaining warning when the UPS is on battery power.

g. The BMS provides an imminent shutdown alarm to signal a low battery condition.

h. The BMS works with either wet cell batteries or valve-regulated batteries.

I. Wiring Terminals: Size the neutral output compression terminal for 200 percent of UPS rated current to accommodate higher neutral currents associated with nonlinear loads. The UPS contains mechanical compression terminals (adequately sized to accommodate 75C wiring) for securing user wiring to the following locations:

1. Rectifier/charger input connections (3 phases).

2. Bypass input connections (3 phases).

3. DC link connections for remote battery cabinets (positive and negative).

4. AC output connections (3 phases and 1 neutral).

J. Input Filter with Power Factor Correction: The input filter reduces to less than 10 percent, the voltage total harmonic distortion reflected onto the utility by the rectifier.

Additionally, the filter improves the input power factor to approximately 0.95. House the input filter in the UPS module. Program the UPS to automatically disconnect the input filter during the following conditions:

1. With loss of rectifier/charger input power.

2. When the critical load is below 25 percent rated capacity.

K. Remote Monitor Panel (RMP): The RMP contains seven backlit status indicators and a local horn which display the current operating mode of the UPS. The RMP is approximately 8.5 by 11.25 inch overall and may be flush or surface wall mounted.

The maximum distance from the UPS is 500 feet. The status indicators are as follows:

1. System normal.

2. On bypass.

3. On battery.

4. Bypass unavailable.

5. UPS alarm.

6. Shutdown imminent.

7. On generator.

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 8

L. SNMP Network Adapters: SNMP adapters provides a communications interface between the UPS (via the RS-232 port) and SNMP-compatible network management systems. This capability allows the unit to be monitored remotely over an Ethernet or Token-Ring network.

2.3 SYSTEM RATINGS AND OPERATING CHARACTERISTICS

A. System Continuous Ratings:

1. KVA Rating: See Division 26 Drawings for KVA rating of UPS. KVA rating is with a load power factor range of 0.8 lagging to 0.9 leading.

B. Rectifier/Charger Input:

1. Nominal Input Voltage: See Division 26 Drawings for input voltage requirements.

2. Operating Input Voltage Range: Plus 10 percent, minus 15 percent of average nominal input voltage without battery discharge.

3. Operating Input Frequency Range: 60 plus or minus 3 Hz (adjustable to plus 5 Hz, factory set)

4. Input Power Factor Range: 0.95 lag minimum at full load and nominal input voltage (with battery on float).

5. Normal Input Current Limit: The UPS has the following programmable input current limit settings while operating in normal mode:

a. Rectifier/Charger Input Current Limit: Shall be adjustable from 50 percent to 125 percent of full-load input current.

b. Battery Input Current Limit: Battery charge current limit is adjustable from 10 percent to 25 percent of the system's full load current regardless of the actual load on the system.

6. On Generator Input Current Limit: The UPS has the following programmable input current limit settings while operating in normal mode on generator:

a. Rectifier/Charger Input Current Limit: Shall be adjustable from 50 percent to 125 percent of full-load input current.

b. Battery Input Current Limit: Battery charge current limit is adjustable from 10 percent to 25 percent of the system's full load current regardless of the actual load on the system.

7. Magnetizing Inrush Current: Typically 800 percent of the largest model's full load rectifier input current. The input isolation transformer doubles this value.

8. Power Walk In: Ramp-up to full utility load adjustable from 3 seconds to 60 seconds.

C. Bypass Input:

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 9

1. Synchronizing Bypass Voltage Range: Plus or minus 10 percent of average nominal input voltage.

2. Synchronizing Bypass Frequency Range: 60 plus or minus 5 Hz

3. Magnetizing Inrush Current: Typically 800 percent of the largest model's full load rectifier input current. The input isolation transformer doubles this value.

4. Input Surge Withstand Capability: The UPS is in compliance with ANSI C62.41, Category-A and B (6KV).

D. Rectifier/Charger Output:

1. Nominal Output Voltage: 540VDC (adjustable from 300 to 560VDC)

2. Steady State Voltage Regulation: Plus or minus 0.5 percent

3. Voltage Ripple: less than 0.5 percent (peak to peak)

4. Capacity: The rectifier/charger supports a fully-loaded Inverter and recharges the battery to 95 percent of its full capacity within 10 times the discharge time when input current limit is set at 125 percent of full load input current.

5. Low Line Operation: The rectifier/charger is capable of sharing the DC load with the Battery when the input voltage falls below the specified operating input voltage range, the on battery indicator enunciates operation in this mode.

6. Battery Equalize: Automatic and manual means must be provided for battery equalization.

7. DC Sensing: Incorporate redundant DC voltage sensing methods for providing battery overvoltage protection.

E. System Output in Normal Mode:

1. Nominal Output Voltage: 208Y/120VAC, 3 phase, 3 wire plus ground or 4 wire plus ground.

2. Steady-State Voltage Regulation (on Inverter): Within plus or minus 1 percent average from nominal output voltage.

3. Manual Output Voltage Adjustment: Plus or minus 5 percent from nominal.

4. Transient Voltage Response: Within plus or minus 5 percent from nominal voltage for a 100 percent load step, full load retransfers and full load drop on battery.

5. Transient Voltage Recovery: 25 ms to within plus or minus 1 percent of steady state.

6. Line Synchronization Range: Plus or minus 0.5 Hz, adjustable to plus or minus 5 Hz.

7. Frequency Regulation: Plus or minus 0.01 Hz free running.

8. Frequency Slew Rate: 1 Hz/second maximum (adjustable).

9. Phase Angle Control:

a. Balanced Linear Loads: Plus or minus 1 degree from nominal 120 degrees.

b. Unbalanced Linear Loads: Plus or minus 3 degrees from average phase voltage.

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 10

10. Phase Voltage Control:

a. Balanced Linear Loads: Plus or minus 1 percent from average phase voltage.

b. Unbalanced Linear Loads: Plus or minus 3 percent for 100 percent load unbalance.

11. Output Voltage Total Harmonic Distortion (THD): 3 percent into 100 percent linear load; 2 percent for a single harmonic.

12. Nonlinear Load Capability: Output voltage THD of 5 percent for 100 percent nonlinear load.

13. Overload Current Capability (with nominal line and fully charged battery): The unit maintains voltage regulation for 125 percent for 10 minutes and 150 percent for 10 seconds.

14. Fault Clearing Current Capability: 160 percent phase-to-phase for 10 cycles; 300 percent phase-to-neutral for 10 cycles.

15. Static Transfer Time: Make-before-break transfer completed in less than 4 ms.

16. Common Mode Noise Attenuation: Minus 65dB up to 20KHZ, minus 40dB up to

100KHZ.

F. System Output in Bypass Mode:

1. Nominal Output Voltage: 208Y/120VAC, 3 phase, 3 wire plus ground or 4 wire plus ground.

2. Static Transfer Time: Make-before-break transfer completed in less than 4 ms.

3. Common Mode Noise Attenuation: Minus 65dB up to 20KHZ, minus 40dB up to

100KHZ.

2.4 MECHANICAL DESIGN

A. Enclosures: House the UPS module in free-standing, double front enclosures (safety shields behind doors) equipped with casters and leveling feet. Design the enclosures for industrial or computer room applications in accordance with the environmental requirements. The enclosures line up and match up in style and color for an aesthetically pleasing appearance. Ship each of the enclosures separately with joining hardware to be bolted together at the time of installation.

B. Ventilation: Design the UPS module for forced air cooling. Air inlets are in the lower front. Air outlets are in the rear of the top. 12 inches of clearance over the UPS air outlets is required for proper air circulation. Air filters for the UPS module are in commonly available sizes.

C. Cooling Fans: The modular design of the UPS module permits removal of each fan without removal of any other assembly. Accomplish fan replacement by removing no more than one fastener per fan and will not require the removal of another subassembly.

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 11

D. Cable Entry: Standard cable entry for the UPS module is through either the enclosure bottom or top. Provide a dedicated wireway within the UPS module for routing user input and output wiring.

E. Front Access: All serviceable subassemblies are modular and capable of being replaced from the front of the UPS (front access only required). Locate all components with exception of the power magnetics within the front 12 inches of the UPS enclosure for easy maintenance access. Removal and replacement of any subassembly does not require the removal of another subassembly

F. Service Area Requirements: The UPS module, battery and options enclosures require no more than 30 inches of front service access room, and does not require side access for service or installation.

2.5 BATTERY

A. Battery Type: Valve-regulated, high-rate discharge, lead-acid cells.

B. Expected Life: 200 complete full load discharge cycles when operated and maintained within Specifications.

C. Nominal Battery String Voltage: 480VDC, 240 cells.

D. Final Discharge Voltage:

1. Full Load: 1.66 volt per cell (adjustable).

2. No Load: 1.75 volt per cell (adjustable). The UPS automatically selects the final discharge voltage (either 1.66 or 1.75 volt per cell) based on the rate of discharge.

E. Nominal Float Voltage: 2.25 volt per cell.

F. Maximum Equalizing Voltage: 2.40 volt per cell.

G. Battery Capacity Protection Time (at 25C): 90 minutes.

H. Battery Recharge Time: 10 times the discharge time to 95 percent of the original protection time.

2.6 CONTROLS AND INDICATORS

A. Microcontroller Operated Circuitry: The UPS controls have the following design and operating characteristics:

1. Provide fully automatic operation of each UPS module through the use of microcontrollers. (Digital signal processing eliminates variances from component tolerance or drift, and provide consistent operational responses.)

2. All operating and protection parameters are firmware controlled, thus eliminating a need for manual adjustments. Perform all adjustments and calibrations without

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 12

the use of potentiometers. Printed circuit boards replacement are possible without requiring calibration.

3. Start-up and transfers are automatic functions.

4. Use multiple microcontrollers so no single controller is in a mission critical application.

5. Store all configuration, setup and calibration information in non-volatile memory that does not require a control battery for data storage.

6. Emergency transfers to Bypass due to UPS failure, are independent of the control logic controlling the rectifier/charger, inverter and monitor panel. Emergency transfer circuitry contains all the necessary circuitry to perform an emergency transfer without any other functioning logic.

7. Monitoring and communications logic are independent of the rectifier/charger and Inverter control logic. Functionally isolate circuitry and firmware required for monitoring and communications logic from the bypass, rectifier/charger and inverter controls. Monitoring firmware is field upgradeable.

8. Program the UPS to optionally provide automatic restart capability following loss of utility and a complete battery discharge. When utility power returns, the UPS automatically energizes the output terminals and subsequently transfer to normal mode.

B. Monitor Panel Indicators: Equip the UPS module with a monitor panel providing the following monitoring functions and indicators (each alarm and notice condition is accompanied with an audible alarm):

1. NORMAL: This symbol is lit when the UPS is operating in normal mode.

2. BATTERY: This symbol is lit when the UPS is operating in battery mode. The

Normal indicator also remains lit.

3. BYPASS: This symbol is lit when the UPS is operating in bypass mode. The critical load is supported by the bypass source. The Normal indicator is not lit when the system is in bypass mode.

4. NOTICE: This symbol is lit when the system needs attention. Some notices may be accompanied by an audible horn. Notices include:

a. Bypass not available.

b. Battery undervoltage.

5. ALARM: This symbol is lit when a situation requires immediate attention.

Accompany all alarms by an audible alarm. Alarms include:

a. Over temperature.

b. Output overload.

c. Inverter failure.

d. Rectifier/charger failure.

e. Shutdown imminent (low battery in emergency mode.).

6. STANDBY: This symbol is lit when electricity is present in the rectifier and Inverter while the Normal indicator is not lit. During normal startup this indicator

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 13

remains lit until the UPS transfers to normal mode, at which time the normal indicator lights. During normal shutdown the standby indicator remains lit until all energy in the UPS is dissipated and shutdown is complete.

C. Monitor Panel Controls: Equip the UPS module with a monitor panel providing the following control functions:

1. Menu and Cursor Controls: Selects, displays and scrolls data on the LCD.

2. Load Off: Shuts down the UPS, deenergizes the critical load and opens the UPS's breaker and contactors.

3. Horn Silence: Silences the current audible alarm(s). The horn sounds again if new alarms occur.

4. Screen Adjust: Controls the liquid crystal display contrast.

D. Monitor Panel Liquid Crystal Display (LCD): The UPS features a liquid crystal display measuring 6 by 7.5 inch with 30 lines of information, 80 characters wide. The display features an autoblanking feature. Provide graphical user screens on the monitor panel LCD to display the UPS operating parameters. Use the monitor panel pushbuttons to access information in these screens. Information in the meter screen and alarm history screen is available to a remote terminal or printer through the RS-232 (EIA/TIA-232) communication port. The screens include:

1. Common Information: Present the following information on the LCD panel at all times:

a. UPS Identification: A user programmable UPS identification of up to 45 characters.

b. UPS status.

c. Highest priority active alarm.

d. Highest priority active notice.

e. Time and date.

f. Realtime battery time available (in the event a utility outage occurs) for the current critical load.

2. System Meter Screen: Realtime digital metering of:

a. Rectifier/Charger Inputs: Voltage (per phase, RMS), current (per phase), frequency, kW, KVA, power factor.

b. System outputs: Voltage (per phase, RMS), current (per phase plus neutral), frequency, kW, KVA, power factor. Output voltage and current sensing independent of the Inverter controls.

c. Bypass inputs: Voltage (per phase, RMS).

d. DC link voltage.

e. Battery charge and discharge current.

3. Output Current Screen: Bar graph display of the percent output current of each phase.

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 14

4. Event History Screen: Shall display up to 400 of the most recent events by date and time. Display time in tenths of seconds (0.1 sec) and recorded in thousandths of seconds (0.001 sec). The screen defines and displays events as either alarms, notices, commands or status. Provide a brief description for each event recorded on this screen.

5. Active System Events Screen: Shall automatically display a list of active alarms and notices.

6. Statistics Screen: This screen displays the following:

a. Time on battery: A record displays the duration and frequency of utility outages in the life of the batteries and in the current month.

b. Building alarms: A record displays the frequency of each building alarm enunciation in the life of the UPS and in the current month.

c. Operational History: A record displays the total amount of time the UPS has been in the each of the following modes of operation: Normal, bypass and battery. A record displays the total amount of time the UPS has been on generator.

d. Availability: Display the observed availability of the normal mode. In addition, display the availability of the Bypass supply as a backup source.

e. Startup Date: Display the date the UPS was initially energized.

7. System Mimic Screen: Display a graphic display of the UPS operational mode and power flow through the UPS to the critical load in real time. The operational status of the Inverter, Rectifier/charger, bypass and battery is also indicated.

Indicate circuit breaker and contactor states.

8. Setup Screen: Shall permit setting time and date for the system clock with controls on the monitor panel. Shall permit configuration of the RS232 and RS485 communications ports, with controls on the monitor panel, for the following modes of operation:

a. Terminal Mode: Log system events immediately as they occur.

b. Calibration Mode: Used by service personnel for system diagnostics.

c. System Configuration Mode: Shall allow setup and configuration of user level functions like battery test and building alarms. Shall allow the six building alarms to be customized with a description of up to 30 characters for display locally on the monitor panel screens and remotely. Shall allow the six building alarms to be programmed to initiate UPS commands upon contact closure.

d. Computer Mode: Shall allow the user to interface with the UPS in binary computer mode.

e. Remote Monitor Mode: Configure the RS485 port to interface with a remote monitor panel, supervisory contact module or relay interface module.

E. Control Panel: Equip the UPS module with a control panel providing UPS control functions. (A key is required to turn on the UPS.) Provide the following controls on the control panel:

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 15

1. The key switch initiates the energize sequence to place the UPS in either normal mode or bypass mode, as defined by the mode switch position.

2. The mode switch controls the manual transfer of the UPS to and from bypass mode.

3. The battery switch enables or disables the internal battery contactor closure.

4. A circuit breaker enables operation of the rectifier.

5. A Load off reset switch resets the UPS, following a load off command.

F. Communication Panel: Equip the UPS module with a communication panel, located behind a protective cover, which provides the following signals and communication features in a Class 2 environment:

1. Alarm and Notice Contacts: Provide dry contacts for summary alarms and notices for external use.

a. Alarm: Indicates the UPS is experiencing an Alarm condition.

b. Notices: Indicates the UPS is experiencing a Notice condition.

2. RS-232 (EIA/TIA-232) and RS-485 Communication Interface: Provide circuitry for one RS-232 (EIA/TIA-232) and one RS-485 communication port. These ports may be used with simple terminals to gain remote access to all unit operation information.

3. Remote Monitor Panel Connection: Provide circuitry for connection of up to two accessory remote monitor panels, relay interface modules or supervisory contact module.

4. Building Alarms: Provide six inputs for monitoring the status of external dry contacts. Dedicate one input to monitoring an external battery disconnect, and dedicate one to monitor an auxiliary generator and initiate reduced input current limit. The remaining four inputs is user selected (smoke, temperature, water, and the like.) Building alarms are set up through the system configuration mode function of the RS-232 (EIA/TIA-232) port. The building alarms also provide the following capabilities:

a. Program building alarms to initiate UPS commands upon contact closure.

b. Building alarms allow the user to customize the building alarm message

(up to 30 characters max.) which appears locally on the Monitor Panel or remotely through the communication ports.

2.7 SYSTEM PROTECTION

A. Provide rectifier/Charger protection by thermal magnetic or RMS current sensing molded-case circuit breakers and transient suppression circuitry.

B. Provide bypass protection through individual fusing of each phase.

C. The static switch features a thermal switch which will open the backfeed contactor in the event the static switch temperature exceeds normal operating parameters

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 16

D. Provide battery protection by individual fusing or thermal magnetic molded case circuit breakers in each battery cabinet (if standard battery pack is provided) or external protective device for an external battery.

E. Provide output protection by electronic current limit circuitry and fuses in the Inverter circuit.

F. Monitor input wiring to the rectifier/charger input and bypass input for proper sequencing. If wiring is installed out of sequence, the UPS detects and enunciates this condition (on the monitor panel) when power is supplied to the inputs. The UPS does not allow operation in normal mode until the wiring error is corrected.

G. Provide inverter circuitry which automatically inhibits the Inverter IGBT switching currents should they exceed normal operating parameters.

H. The UPS remains in normal mode during a failure condition where the bypass backfeed protection fails. Manual transfers between normal mode and bypass mode is possible with this failure condition

I. The UPS remains in normal mode during a failure condition where one or more SCRs in the static switch shorts. Manual transfers between normal mode and bypass mode is possible with this failure condition.

J. To comply with agency safety requirements, the UPS does not rely upon any disconnect devices outside of the UPS module to isolate the battery cabinet from the

UPS.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install in accordance with manufacturer's instructions.

3.2 FIELD QUALITY CONTROL

A. Perform the following procedures and tests by field service personnel during the UPS startup:

1. Visual Inspection:

a. Visually inspect all equipment for signs of damage or foreign materials.

b. Observe the type of ventilation, the cleanliness of the room, the use of proper signs, and any other safety related factors.

2. Mechanical Inspection:

a. Check all the power connections for tightness.

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 17

b. Check all the control wiring terminations and plugs for tightness or proper seating.

3. Electrical Precheck:

a. Check the DC bus for a possible short circuit.

b. Check input and Bypass power for proper voltages and phase rotation.

c. Check all lamp test functions.

4. Initial UPS Startup:

a. Verify that all the alarms are in a "go" condition.

b. Energize the system and verify the proper DC, walkup, and AC phase on.

c. Check the DC link holding voltage, AC output voltages, and output wave forms.

d. Check the final DC link voltage and Inverter AC output. Adjust if required.

e. Check for the proper synchronization.

f. Check for the voltage difference between the Inverter output and the

Bypass source.

5. Operational Training: Before leaving the site, the field service engineer familiarizes responsible personnel with the operation of the UPS. The UPS equipment is available for demonstration of the modes of operation.

3.3 MANUFACTURER'S FIELD SERVICE

A. Field Engineering Support: The UPS manufacturer directly employs a nationwide field service department staffed by factory trained field service engineers dedicated to startup, maintenance, and repair of UPS equipment. The organization consists of local offices managed from a central location. Deploy field engineers in key population areas to provide on site emergency response within 24 hours 80 percent of the time. A map of the United States showing the location of all field service offices must be submitted with the proposal. Third party maintenance will not be accepted.

B. Spare Parts Support: Locate parts supplies in the field to provide 80 percent of all emergency needs. The factory serves as the central stocking facility where a dedicated supply of all parts is available within 24 hours.

C. Maintenance Contracts: Provide and offer a complete range of preventative and corrective maintenance contracts with the proposal. Under these contracts, the manufacturer maintains the user's equipment to the latest engineering levels as they are developed.

STATIC UNINTERRUPTIBLE POWER SUPPLY 263350 - 18

D. Product Enhancement Program: The UPS manufacturer makes available feature upgrade service offerings to all users as they are developed. Propose these products as a field installable, optional kit.

END OF SECTION 263350