
18
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MESTA UPS SPECIFICATIONS 500VA TO 1250VA
Ø
Ø
INPUT
Voltage
•
120VAC - 15% + 10%
Frequency
•
60Hz
±
5Hz (Input frequency
range is programmable via RS232 port)
OUTPUT
Voltage (AC line)
•
120VAC
±
6%
Voltage (on inverter)
•
120VAC
±
1%
Crest Factor Capability
•
3.0-*4.0
Output Power Factor Limitations
•
None
Frequency (AC line)
•
follows input
Frequency (on inverter)
•
60Hz
±
.01Hz
Frequency Slew Rate
•
1–255Hz/sec
(programmable via RS232 port)
Total Harmonic Distortion < 1%
Efficiency
•
>92% overall at full load
Overload Rating
•
150% for 1 min.
•
300% for 1 second
OVERLOAD PROTECTION
Output electronically current limited to 300%
full load rating
*400% full load rating
Fuses provide backup protection to
electronic current limit
Over temperature protection
BATTERY
Sealed maintenance-free 5 year expected
life
INDICATORS AND CONTROLS
LEDs
•
Indicate UPS On, On Line, On Battery,
Battery Status, and Overload status
Audible alarm
•
indicates loss of AC line, low
battery or overload
Reset Switch
•
silences alarm, resets
overloads and is used to initiate UPS in-
service battery test
Power ON/OFF switches
RS232 Interface for remote communi-
cations of status and diagnostics
PHYSICAL
Operating Temp
•
0
°
C to 40
°
C ambient
without derating
Storage Temp
•
-20
°
C to 40
°
C
Thermal
•
cooling fan as required
Audible Noise
•
35 dBA
Line Cord
•
6' detachable black 3 wire
ground with NEMA 5-15P plug
Output Receptacles
•
4 NEMA 5-15R
RS232 Port
•
Interface for remote
communications
OPTIONS
-B: Automatic bypass to AC line in event of internal UPS problem.
-H: Hospital grade plugs/receptacles
-I: Complete line-to-load transformer isolation (increases dimensions / slightly decreases
efficiency)
Dry contact relays for external UPS status indication.
50 Hz Models
208 or 240 V models in all ranges
NOTE: For any of the above options, consult factory.
Backup Time
Dimensions
Models
Nominal
BatteryVoltage
P.F. = .7
P.F. = 1.0
H
L
W
UPS500-43
48V
23.0 min
15.0 min
10.25
16
8
UPS750-43
48V
13.5 min
8.0 min
10.25
16
8
UPS750-83
96V
30.0 min
20.0 min
10.25
21
8
UPS1000-83
96V
23.0 min
15.0 min
10.25
21
8
UPS1250-84
96V
17.0 min
10.0 min
10.25
21
8
* These enhanced ratings apply only to the UPS1250-84 model