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Installation 9
Notes
1. Nominal (NOM) current is based on full rated output load.
2. Maximum (MAX) current (125% of NOM) is short duration for battery recharge conditions.
3. UPS input and bypass cables must be run in separate conduit from output cables.
4. If the UPS module is to be upgraded in the future, it is recommended that the AC input, bypass AC input, battery, and AC output wiring and overcurrent
protection be sized initially for the future upgraded size.
5. Nominal battery voltage is shown at 2.0 volts/cell per NEC 480-2.
6. Power cables from UPS DC link to batteries should be sized for a total maximum 2.0 volt line drop (measured at UPS) at maximum discharge current.
7. Recommended bypass AC input and AC output overcurrent protection represents 125% of nominal full load current (continuous) per NEC 220-2(a).
8. UPS output load cables must be run in separate conduit from input and bypass cables.
9. Minimum sized grounding conductors to be per NEC 250-95. Parity sized ground conductors are recommended. Neutral conductors to be sized for full
capacity per NEC-16 Note 10.
10. Wiring requirements:
AC INPUT: 3-phase, 3-wire plus ground (unit supplied with input isolation transformer).
3-phase, 4-wire plus ground (unit supplied with input auto transformer).
AC OUTPUT: 3-phase, 4-wire plus ground.
DC INPUT: 2-wire (positive and negative), plus ground.
11. All wiring is to be in accordance with national and local electrical codes.
12. Minimum access clearance is 3 feet front and 1 foot above UPS.
13. Top or bottom cable entry through removable access plates. Cut plate to suit conduit size, then replace.
14. Control wiring and power wiring must be run in separate conduit.
15. Battery cabinet not included.
Additional Notes
1. If site configuration includes a back-up emergency generator, it is recommended that the engine generator set be properly sized and equipped for a UPS
application. Generator options would typically include an isochronous governor (generator frequency regulation) and a UPS compatible regulator
(generator voltage regulation). Consult generator manufacturer for required generator options and sizing.
2. If site configuration includes an automatic transfer switch, refer to the Liebert Power Line titled “Criteria for Application of Automatic Transfer Switches
(ATS) with Uninterruptible Power Supply (UPS) Systems.” 91K-PLT-48-02. It is also recommended that the transfer switch be equipped with auxiliary
contacts for UPS “on generator” current limit. Consult transfer switch manufacturer for required transfer switch options and sizing.
3. If site configuration requires an external isolated maintenance bypass circuit, it should be noted that the Utility AC input is not
in phase with the UPS AC
output, with the optional delta-wye input isolation transformer. Consult with sales representative or UPS applications engineer.
Table 3 Site Planning Data, Series 300 DT, Dual Input 65 to 125 kVA
Model
Power
Rating Voltage
Rectifier
AC Input
Rectifier
AC Input
with Optional
Input Filter
Battery AC Output Mechanical Data
Current
Rec
** Current
Rec
**
Nominal
Voltage
Full
Load
Max.
Dis-
charge
Current
Current
Rec
**
Dimen-
sions Weight
DFL
Lb./
Ft.
2
Heat
Dis-
sipa-
tion
BTU/
hr.
Cooling
Air
CFM
kVA kW
VAC/Freq
Nom Max Nom Max kW Nom (WxDxH)
362
*
65 52 208/60Hz
240/60Hz
480/60Hz
600/60Hz
197A
171A
85A
68A
246A
214A
106A
85A
300A
300A
150A
110A
182A
158A
79A
63A
228A
197A
99A
79A
300A
250A
125A
100A
360VDC
(180 cells)
57.1 198A 180A
155A
78A
63A
225A
200A
100A
80A
54x28x72 in
137x72x183 cm
2500 lbs
1134 kg
238 24200 1200
367 75 60 208/60Hz
240/60Hz
480/60Hz
600/60Hz
234A
203A
101A
81A
293A
254A
126A
101A
400A
350A
175A
125A
208A
180A
90A
72A
260A
225A
113A
90A
350A
300A
150A
125A
360VDC
(180 cells)
65.2 225A 208A
180A
90A
72A
300A
225A
125A
90A
54x28x72 in
137x72x183 cm
2500 lbs
1134 kg
238 25400 1200
377
*
100 80 208/60Hz
240/60Hz
480/60Hz
600/60Hz
312A
270A
135A
108A
390A
338A
169A
135A
500A
450A
225A
175A
277A
240A
120A
95A
347A
300A
150A
120A
450A
400A
200A
150A
360VDC
(180 cells)
86.5 307A 278A
241A
120A
96A
350A
300A
150A
125A
54x28x72 in
137x72x183 cm
2700 lbs
1225 kg
257 33800 1600
382 125 100 208/60Hz
240/60Hz
480/60Hz
600/60Hz
386A
334A
167A
134A
483A
418A
209A
168A
600A
600A
300A
225A
343A
297A
148A
119A
429A
371A
185A
149A
600A
450A
225A
175A
360VDC
(180 cells)
108.1 383A 347A
301A
150A
120A
450A
400A
200A
150A
54x28x72 in
137x72x183 cm
2700 lbs
1225 kg
257 38000 1600
Applicable
Notes:
—123,4
9,10
11
13
14
123,4
9,10
11
13
14
5—4,6
9,10
11
13
14
1 3,4,7
8,9,10
11
13
14
12,13,15 15 15 — —
For explanation of
Applicable Notes,
see referenced numbers in
Notes
below.
*Field-upgradeable to next larger model
**Rec = Recommended External Overcurrent Protection
DFL = Distributed Floor Loading