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Liebert PowerSure PST UPS

GUIDE SPECIFICATIONS

350VA/500VA (120 Volt) & 500VA/650VA (230 Volt)

Single - Phase Uninterruptible Power Supply Systems

1.0 GENERAL

1.1 SUMMARY


This specification defines the electrical and mechanical characteristics and requirements for a continuous-duty single-phase, solid-state, uninterruptible power system. The uninterruptible power system, hereafter referred to as the UPS, will provide high-quality AC power for sensitive electronic equipment loads.

1.2 STANDARDS


The UPS is designed in accordance with the applicable sections of the current revision of the following documents. Where a conflict arises between these documents and statements made herein, the statements in this specification will govern.

120V Units

UL 1778, c-UL listed (to CSA 22.2 No. 107.1)

FCC Part 15, Subpart B, Class B

ANSI C62.41, Category A, Level 3;

EN61000-4-5, Level 3, Criteria A

EN61000-4-2, Level 3, Criteria A

EN61000-4-3, Level 2, Criteria A

EN61000-4-4, Level 3, Criteria A

EN61000-4-6, Level 2, Criteria A

EN61000-3-2

EN61000-3-3

ISTA Procedure 1A
230V Units

EN50091-1-1, TUV/GS listed, CE compliance mark

EN50091-2, Class B

EN61000-4-2, Level 3, Criteria B

EN61000-4-3, Level 2, Criteria A

EN61000-4-6, Level 2, Criteria A

EN61000-4-4, Level 3, Criteria A

EN61000-4-5, Level 3, Criteria B

EN61000-3-2

EN61000-3-3

ISTA Procedure 1 A

1.3. SYSTEM DESCRIPTION

1.3.1 Modes of Operation


The UPS is designed to operate as an off-line (standby) system in the following modes:

A. Normal - The critical AC load is continuously supplied with filtered power. The battery charger maintains a float-charge on the battery.

B. Battery - When the input power source exceeds the parameters defined in section 1.3.3.1, the critical AC load is supplied power by the inverter which obtains its power from the battery. Typical detection and transfer time is 4 ─ 6 ms.

C. Recharge - Upon restoration of utility / mains AC power, after a utility / mains AC power outage and complete or partial battery discharge, the unit automatically restarts and resumes supplying power to the critical AC load; and the battery charger recharges the battery.

D. Battery Start - The UPS is capable of starting without input power. The unit starts up and operates from the battery, with output frequency the same as the last operating frequency.

1.3.2 Design Requirements

A. Voltage: Input/output voltage specifications of the UPS are:

Input:

120V Units: 0 ─ 150VAC, 60Hz, single-phase, 2-wire-plus-ground.

230V Units: 0 ─ 325VAC, 50/60Hz auto-sensing, single-phase, 2-wire-plus-earth.

Output:

120V Units: 120VAC, 60Hz, single-phase, 2-wire-plus-ground.

230V Units: 230VAC, 50/60Hz, single-phase, 2-wire-plus-earth.

B. Output Load Capacity: Maximum specified output load capacity of the UPS, regardless of load power factor, is:

120V Units 230V Units

350VA / 225W 500VA/300W

500VA / 300W 650VA/360W
C. Internal Battery: The battery consists of valve regulated, non-spillable, maintenance-free, sealed, lead-acid cells.

D. Battery Reserve Time: Greater than 3 minutes typical at full load with ambient temperature 25C (77F) for 120V units. Three minutes typical at 75% load with ambient temperature 25C (77F) for 230V units.

E. Battery Recharge: The UPS contains a battery recharge rate designed to prolong battery life. Recharge time is 12 hours typical to 90% capacity after a complete discharge into full resistive load.

1.3.3 Performance Requirements

1.3.3.1 AC Input to UPS


  1. Voltage Configuration: The UPS operates at these values without drawing power from the batteries.

120V Units: 120 VAC nominal: single-phase, 2-wire-plus-ground: 98 ─ 140VAC (±3VAC).

230V Units: 230 VAC nominal: single-phase, 2-wire-plus-ground: 180 ─ 264VAC (±6VAC).

  1. Frequency: The UPS operates within the following frequency specifications without drawing power from the batteries.


50 Hz Applications: 47 ─ 53Hz (±0.4Hz)

60 Hz Applications: 57 ─ 63Hz (±0.4Hz)


  1. Surge Protection: The 120 VAC units withstand input surges of up to 603J without damage per criteria listed in IEEE C62.41, Category A, Level 3. The 230 VAC units withstand input surges of up to 220J without damage per criteria listed in EN61000-4-5, Level 3, Criteria B.




  1. Input Connections: The 120V units have an attached input cord 6.5 feet (2.0 meters) in length, measured between the inside edges of the connectors. The attached input cord has a NEMA 5-15 plug. The 230V units have an IEC-320-C14 connector.



1.3.3.2 AC Output


A. Voltage Configuration:

120V Units: 120VAC, 60Hz, single-phase, 2-wire-plus-ground.

230V Units: 230VAC, 50/60 HZ, single-phase, 2-wire-plus-earth.

B. Voltage Regulation: ±8% (Battery mode).

C. Frequency Regulation: +1.0Hz on battery operation.

  1. Load Power Factor Range: 0.6 lagging to 1.0 (unity).

E. Inverter Overload Capability: Overload Warning (visual and audible alarms) occurs between 100% ─ 109% of rated capacity, continuous duty.

Shutdown occurs at the following levels:

>110 ─ 120%; after 120 seconds (Normal mode)

>120 ─ 150%; after 15 seconds (Normal mode)

>150% - short-circuit; after 5 seconds (Normal mode)

>110%; after 2 cycles (Battery mode)

  1. Voltage Transient Response: ±15% in Battery mode for 0-100-0% loading of the UPS rating, (120V models only 230V ±20%) ±12% in Battery mode for 20-100-20% loading of the UPS rating.

  1. Transient Recovery Time: To within ±8% of nominal voltage in < 2 cycles.

  1. Efficiency: >94% (Normal mode)

1.4 ENVIRONMENTAL CONDITIONS


A. Ambient Temperature

Operating: 32oF ─ 104oF (0oC ─ 40oC) for altitudes 0 ─ 10,000 ft. (0 ─ 3000 meters) above sea level. 77° F (25oC) for optimum battery performance
Storage: 5°F ─ 122°F (-15°C ─ 50°C) with batteries

B. Relative Humidity


0 ─ 95% non-condensing.

C. Altitude:

3,000 m (10,000 ft. max.), without power derating when operated within the temperature specified in section 1.4.A.

D. Audible Noise

Noise generated by the UPS during normal operation does not exceed 40dB when measured at 1 meter from the surface of the UPS, “A” weighted.

E. Electrostatic Discharge

The 120V units are able to withstand an electrostatic discharge compliant to EN61000-4-2, level 3, Criteria A without damage and without affecting the connected load. The 230V units are able to withstand an electrostatic discharge compliant to EN61000-4-2, level 3, Criteria A without damage and without affecting the connected load.

1.5 USER Accessories and Packaging

The specified UPS system is supplied with one (1) user's manual. The manual includes installation drawings and instructions, a functional description of the equipment, safety precautions, illustrations, operating procedures, and general maintenance guidelines. The UPS is also supplied with one (1) 6-ft (1.8m) USB cable (for USB models only, denoted by the suffix “U” at the end of the model number) and one (1) 7-ft (2.1m) RJ-11 cord and one (1) warranty card (120V models only). The package of the 230 VAC units also includes two (2) output power cords (2m; 6.6 ft). The package meets the requirements of ISTA Procedure 1A.

1.6 WARRANTY


The manufacturer warrants the UPS against defects in materials and workmanship for two (2) years. The warranty covers all parts. An optional one (1) or three (3) year extended warranty is available from the manufacturer.

1.7 QUALITY ASSURANCE

1.7.1 Manufacturer Qualifications


Liebert Corporation provides more than twenty year's experience in the design, manufacture, and testing of solid-state UPS systems and the company is certified to ISO 9001.

1.7.2 Factory Testing


Before shipment, the product is tested to assure compliance with the specification.

2.0 PRODUCT

2.1 FABRICATION


All materials and components making up the UPS are new, of current manufacture, and have not been in prior service except as required during factory testing. All relays are provided with dust covers.

2.1.2 Wiring


Wiring practices, materials, and coding are in accordance with the requirements of the standards listed in section 1.2. All wiring is copper.

2.1.3 Cabinet


The UPS unit comprised of: TVSS & EMI/RFI Filters, Transfer Switch, Inverter and Battery consisting of the appropriate number of sealed battery cells; is housed in a mini-tower NEMA type 1 enclosure. The UPS cabinet is injection-molded standard color. Dimensions and weights are:


UNIT

UNIT DIMENSIONS

W x D x H in (mm)

120V UNITS WEIGHT lbs. (kg)

230V UNITS WEIGHT

kg (lbs)

350VA

6.6 x 9.8 x 3.7 (168 x 250 x 95)

11.7 (5.3)

N/A

500VA

6.6 x 9.8 x 3.7 (168 x 250 x 95)

13.5 (6.1)

4.7 (10.4)

650VA

6.6 x 9.8 x 3.7 (168 x 250 x 95)

N/A

5.7 (12.5)

2.1.4 Cooling


The UPS shall be convection cooled.

2.2 COMPONENTS

2.2.1 Input Protection


The UPS has built-in protection against undervoltage, overcurrent, and overvoltage conditions including low-energy lightning surges introduced on the primary input power source. The UPS is provided with an input circuit protector. The 120 VAC UPS models withstand input surges without damage per criteria listed in IEEE C62.41, Category A, Level 3 and the 230 VAC UPS models withstand input surges without damage per criteria listed in EN61000-4-5, Level 3, Criteria A. Additionally, the UPS is supplied with Data Line Protection Connectors (1-input, 2-output) to provide phone, fax or modem line surge protection via RJ-11 connectors.

2.2.2 Battery Recharge


The UPS contains a battery recharge rate designed to prolong battery life. The battery is constant voltage charged to recharge and maintain the battery in a fully charged state. Recharge time is 12 hours maximum to 90% rated capacity after discharge into full resistive load.

2.2.3 Inverter DC Protection

The following DC shutdown levels protect the UPS:

DC Overvoltage Shutdown

DC Undervoltage Shutdown (End of Discharge)

DC Undervoltage Warning (Low Battery Reserve)

2.2.4 Output Protection

For output faults including short circuits and overloads, the UPS is protected by the input circuit protector during Normal mode and by electronic current limiting during Battery mode.

2.2.5 Overload


The UPS is capable of supplying power for overloads exceeding 100% and up to 110% of full load rating, continuously. A visual indicator and audible alarm indicate overload operation. For greater current demands, the UPS employs circuit protector and electronic current-limiting protection to prevent damage to components. The UPS is self-protecting against any magnitude of connected output overload. The UPS control logic senses and disconnects the UPS from the critical AC load and clears the protective circuit breaker during Normal mode.

2.2.6 Output Frequency


An oscillator controls the output frequency of the UPS. The oscillator maintains the output frequency to + 1.0 Hz of nominal when not synchronized to the utility/mains source.

2.2.7 Battery Over-Discharge Protection

To prevent battery damage due to excessive discharge levels, the UPS control logic automatically monitors the battery voltage and switches off the output at the predetermined battery shutdown voltage set point.

2.3 Display and Controls

2.3.1 General


The UPS is provided with a microprocessor-based unit status and control display designed for convenient and reliable user operation. The status and alarm indicators are displayed on a status indicator display.

2.3.2 System Indicators


There are three (3) status indicators on the top of the UPS (Utility/Battery, Site Wiring Fault and Fault):

The Utility/Battery Indicator illuminates when the UPS is operating in Normal mode, supplying power to connected loads. The Utility/Battery Indicator flashes when the UPS is operating in Battery mode.

The Fault Indicator illuminates when the UPS detects an internal fault. It flashes if the UPS detects an overload condition.

The Site Wiring Fault Indicator flashes amber when the UPS detects a line-neutral reversal or a poor neutral-ground bonding (120V models only).

2.3.3 On/Off/Alarm Silence Button


UPS start-up and shutdown operations are accomplished by the "ON/OFF/Alarm Silence" push button located on the top panel of the UPS. Depressing the button reverses the existing state of the UPS operation.

When a UPS audible alarm is active, pressing and releasing the main ON/OFF/Alarm Silence button will silence the active audible alarm, whether mains power is present or not. Once the alarm silence function has been activated, all active audible alarms - except for low battery or overload conditions - will remain silenced until a new alarm condition is detected.

2.3.4 On-Line Battery Test


The UPS is provided with an automatic biweekly battery test feature. The test ensures the capability of the battery to supply power to the inverter while loaded. If the battery fails the test, the UPS will return to normal mode and display a warning indicator and audible alarm.

2.4 Internal Battery


Valve regulated, non-spillable, lead-acid cells are used as a stored-energy source for the specified UPS system. The battery is housed internal to the UPS cabinet, and sized to support the inverter at rated load and power factor, with ambient temperature of 25 o C (77 o F) for a minimum of 3 minutes reserve time. The expected life of the battery is 3 - 5 years or 250 complete discharge cycles.

2.5 Output Distribution


Output distribution is integral to the UPS and is located on the top of the unit.

MODEL

120 VAC Units

230 VAC UNITS

350/500VA

(3) NEMA 5-15R (orange) Battery back-up + surge protection;

(2) NEMA 5-15R (black) surge protection only

N/A

500/650VA

N/A

(3) IEC-320-C13 (orange) Battery backup + surge protection;

(2) IEC-320-C13 (black) surge protection only

2.6 Communications (USB models only)

The PowerSure PST has a USB interface port for communication that will work with the built-in Microsoft Power Manager software on the user’s PC, if the PC is so equipped. It will provide UPS status and manages the automatic orderly shutdown of the computer. The UPS (USB) communications meets HID standard, version 1.11. All USB models are compatible with Microsoft Windows 2000, Windows XP and Mac OS X v10.2 or later. All USB models ship with a 6-ft. (1.8m) USB cable.



PowerSure PST Guide Specification

350VA/500VA & 500VA/650VA SL-23276 4/03

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