
G2020 Series UPS Installation and Operation Manual
– 94861-004
71
Installation Planning Guide for 750kVA UPS
Single Module System: 480V Input, 480V Output
General Mechanical Information
Dimensions
(W x D x H)
Weight
Floor
Loading
Approximate Full-Load
Heat Rejection
Mechanical Clearance (Inches)from UPS
for Ventilation and Maintenance Access
Inches
Lbs.
Lbs./ft.
2
BTU/Hr
Top
Front
Bottom
Sides**
Back
81.6
” x 33.5” x 80.6”*
3,990
211
62,392
24
”
40
”
0”
0”
0”
* Height includes removable fan housing
– Frame height is 78.7”.
** 0” clearance for peripheral equipment, 1” clearance for walls.
Primary AC Input (480V 3-Phase / 3-Wire)
Maximum Input Power Demand
Normal Mode (Recharge Mode)
Recommended External
Overcurrent Protection
External Feeder Wire Size Per Phase:
kVA
PF
Amps (Max.)
Amps
Cable Quantity of Below kcmil at 75º C Temp. Rating
250kcmil
300kcmil
350kcmil
400kcmil
500kcmil
600kcmil
781 (840)
>0.99
939 (1010)
1300AT (1600AF)
9
8
7
7
6
6
Alternate (Bypass) AC Input (480V 3-Phase / 3-Wire)
Input Power Demand
Recommended External
Overcurrent Protection
External Feeder Wire Size Per Phase:
kVA
PF
Amps (Max.)
Amps
Cable Quantity of Below kcmil at 75º C Temp. Rating
250kcmil
300kcmil
350kcmil
400kcmil
500kcmil
600kcmil
750
1.0
902A
1200AT
8
7
7
6
6
5
Battery Input (480VDC Nominal)
Battery Capacity Required
for Full Load Output
Maximum Discharge at
Full Load Output
Recommended External
Overcurrent Protection
External Feeder Wire Size:
kWB
Amps DC
Amps
Cable Quantity of Below kcmil at 75º C Temp. Rating
250kcmil
300kcmil
350kcmil
400kcmil
500kcmil
600kcmil
776 @ 1.0 PF
1,940A
2500AT
16
15
14
13
11
10
AC Output (480V 3-Phase / 3-Wire)
Rated Output Power
Recommended External
Overcurrent Protection
External Feeder Wire Size Per Phase:
kVA
PF
Amps
Amps
Cable Quantity of Below kcmil at 75º C Temp. Rating
250kcmil
300kcmil
350kcmil
400kcmil
500kcmil
600kcmil
750
1.0
902
1200 AT
8
7
7
6
6
5
Important Notes:
1.
Maximum input current is limited to 108% of the rated input current.
2.
Output load conductors are to be installed in separate conduit from
input conductors.
3.
Control wires and power wires are to be installed in separate
conduits.
4.
Recommended AC input and output overcurrent protection based
on continuous full load current per NEC 215.3.
5.
Wiring shall comply with all applicable national and local electrical
codes.
6.
Grounding conductors to be sized per NEC Article 250-122.
-
Primary AC Input: 3
, 3-wire + ground.
-
Alternate AC Input: 3
, 3-wire + ground.
-
AC Output: 3
, 3-wire + ground.
-
DC Input: 2-wire (Positive/Negative) + ground.
7.
Nominal battery voltage based on the use of VRLA type batteries
(2.0 volts/cell nominal).
8.
Maximum battery discharge current based on lowest permissible
discharge voltage of 1.67 VPC.
9.
DC wires should be sized to allow not more than a 2-volt drop at
maximum discharge current.
10. Weights do not include batteries or other auxiliary equipment external
to the UPS.
11. Cable sizing calculations based on the following method:
Base cable ampacity is determined by 75
o
C rated copper
conductor values in 2014 NEC Table 310.15(B)(16).
Cable ampacity is derated for 40
o
C Ambient Operating
Temperature per 2014 NEC Table 310.15(B)(2)(a).
Cable ampacity is further derated for maximum possible of
conductors in Trade Size 4” EMT conduit per quantities shown in
2014 NEC Table C.1 and factors shown in Table 310.15(B)(3)(a).
Cable meets bend radius limitations at the UPS terminals.
NOTE: Consult latest edition of applicable national and local
codes for possible variations.
12. Ratings of wires and overcurrent devices are suggested minimums.
Consult with a registered Professional Engineer within your local area
for proper size selections.
13. Overcurrent protection devices rated at 1200AT and above are
assumed to be rated for 100% continuous operation.
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