Liebert 350VA, 1000VA User Manual
Liebert PowerSure PSA UPS
GUIDE SPECIFICATIONS
350VA to 1000VA
Single - Phase Uninterruptible Power Supply Systems
1.0 GENERAL
1.1 SUMMARY
This specification defines the electrical and mechanical characteristics and requirements for a continuousduty 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 (IEEE 587, Category A);
EN61000-4-5, Level 3, Criteria A
EN61000-4-2, Level 3, Criteria A
EN61000-4-3, Level 3, Criteria A
EN61000-4-4, Level 4, Criteria A
EN61000-4-6, Level 3, 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 A
EN61000-4-3, Level 3, Criteria A
EN61000-4-6
EN61000-4-4, Level 4, Criteria A
EN61000-4-5, Level 3, Criteria A
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 a line-interactive 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.
PowerSure PSA Guide Specification
350 – 1000VA SL-23271 8/03
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B. Voltage Boost/Buck - During input power source abnormalities (sags and swells), the AC
output power is corrected by means of boost (sag correction) or buck (swell correction)
compensation taps. Operation of the compensation taps automatically maintains the proper
output voltage for the connected critical equipment. The compensation taps is designed for
indefinite operation to their limits. Operation of the compensation taps will not discharge the
battery.
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 - 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.
E. 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: 0-160 VAC, 60/50 Hz auto-sensing, single-phase, 2-wire-plus-ground.
230V Units: 0-300 VAC, 50/60 Hz auto-sensing, single-phase, 2-wire-plus-earth.
Output:
120V Units: 110/120/127 VAC ±10%, 60/50 Hz, single-phase, 2-wire-plus-ground.
(DIP Switch selectable)
230V Units: 220/230/240 VAC ±10%, 50/60 Hz, single-phase, 2-wire-plus-earth.
(DIP Switch selectable)
B. Output Load Capacity: Maximum specified output load capacity of the UPS, regardless of
load power factor, is:
350VA / 210W 500VA / 300W
650VA / 390W 1000VA / 600W
C. Internal Battery: The battery consists of valve regulated, non-spillable, maintenance-free,
sealed, lead-acid cells. The battery is user replaceable and hot swappable.
D. Battery Reserve Time: 5 minutes typical at full load with ambient temperature 77°F (25°C).
E. Battery Recharge: The UPS contains a battery recharge rate designed to prolong battery life.
Recharge time is 6 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
A. Voltage Configuration: The UPS operates at these values without drawing power from the
batteries.
110 VAC nominal: single phase, 2-wire-plus-ground: 78 ─ 138 VAC (±3VAC),
Buck compensation: 122VAC (±3VAC)
Boost1 compensation: 98VAC (±3VAC)
Boost2 compensation: 87VAC (±3VAC)
120 VAC nominal: single phase, 2-wire-plus-ground: 85 ─ 145 VAC (±3VAC),
Buck compensation: 133VAC (±3VAC)
Boost1 compensation: 107VAC (±3VAC)
Boost2 compensation: 95VAC (±3VAC)
PowerSure PSA Guide Specification
350 – 1000VA SL-23271 8/03
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127 VAC nominal: single phase, 2-wire-plus-ground: 90 ─ 150 VAC (±3VAC),
Buck compensation: 141VAC (±3VAC)
Boost1 compensation: 113VAC (±3VAC)
Boost2 compensation: 100VAC (±3VAC)
220 VAC nominal: single phase, 2-wire-plus-earth: 155 ─ 270 VAC (±6VAC)
Buck compensation: 243 VAC (±6VAC)
Boost1 compensation: 197 VAC (±6VAC)
Boost2 compensation: 174 VAC (±6VAC)
230 VAC nominal: single phase, 2-wire-plus-earth: 163 ─ 282 VAC (±6VAC)
Buck compensation: 254 VAC (±6VAC)
Boost1 compensation: 207 VAC (±6VAC)
Boost2 compensation: 183 VAC (±6VAC)
240 VAC nominal: single phase, 2-wire-plus-earth: 171 ─ 291 VAC (±6VAC)
Buck Compensation: 265 VAC (±6VAC)
Boost1 compensation: 215 VAC (±6VAC)
Boost2 compensation: 191 VAC (±6VAC)
B. Frequency: The UPS automatically senses the input frequency and operates within the
following frequency specifications without drawing power from the batteries.
50 Hz Applications: 46.5 ─ 53.5 Hz (±0.1 Hz)
60 Hz Applications: 56.5 ─ 63.5 Hz (±0.1 Hz)
C. Surge Protection: The 120 VAC units can withstand input surges of up to 570J without
damage per criteria listed in IEEE C62.41, Category A, Level 3. The 230 VAC units can
withstand input surges of up to 660J without damage per criteria listed in EN61000-4-5,
Level 3, Criteria A.
D. Input Connections: The 120 VAC units have an attached input cord 6.0 feet (1.8 meters) in
length, measured between the inside edges of the connectors. The attached input cord has a
NEMA 5-15 plug.
1.3.3.2 AC Output
A. Voltage Configuration:
120 VAC units: 110/120/127 VAC, 60/50 Hz, single-phase, 2-wire-plus-ground.
120VAC ± 8% (Battery mode)
230 VAC units: 220/230/240 VAC, 50/60 Hz, single phase, 2-wire-plus-earth.
230 VAC ±8% (Battery mode)
B. Voltage Regulation: ±10% steady state.
C. Frequency Regulation: +0.1Hz synchronized to utility / mains.
+0.5Hz free running or on battery operation.
D. Load Power Factor Range: 0.6 lagging to 1.0 (unity).
E. Inverter Overloa d 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)
PowerSure PSA Guide Specification
350 – 1000VA SL-23271 8/03
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