Thomas & Betts 9395 - Manual (Page 15)

UPS 225 - 275 kVA
User’s and Installation Guide
1027212
Revision B 15
For external wiring requirements, including the minimum size of external wiring, see Table
2-4. The power wiring connections for this equipment are rated at 70°C. If wire is run in an
ambient temperature greater than 30°C, higher temperature wire and/or larger size wire may be
necessary.
Basic unit rating at 0.9 lagging pF load
Units Rating 50/60 Hz
kVA
kW
225
202
275
247
Input and output voltage Volts 400/400 400/400
AC input to UPS rectifier (0.98 Min. pF)
Full load current plus battery recharge current
(3) phases, (1) ground
Minimum conductor size
Number per Phase
A
Amps 373 456
mm 2
(each)
120
(2)
150
(2)
AC input to UPS bypass
Full load current
(3) phases, (1) neutral–if required, (1) ground B
Minimum conductor size
Number per phase
B
Amps 336 410
mm 2
(each)
120
(2)
150
(2)
DC input from battery to UPS
(1) positive, (1) negative c
minimum conductor size
number per pole
C
Amps 475 650
mm 2
(each)
240
(2)
300
(2)
AC output to critical load
full load current
(3) phases, (1) neutral–if required, (1) ground d
minimum conductor size
number per phase
D
Amps 290 400
mm 2
(each)
120
(2)
150
(2)
NOTE callout letters A, B, C, and D map to figure 6-5 on page 6-6.
Table 2-4. Input/output ratings and external wiring requirements for the Powerware 9395-275/225 and
9395-275/275
Read and understand the following notes while planning and performing the installation:
Refer to national and local electrical codes for acceptable external wiring practices.
Material and labor for external wiring requirements are to be provided by designated
personnel.
For external wiring, use 70°C copper wire. See the appropriate information in Table 2-4. Wire
sizes are based on using the specified breakers.
The bypass feed into this equipment uses three or four wires. The rectifier feed into this
equipment uses three wires. The phases must be symmetrical about ground (from a Wye
source) for proper equipment operation.
If the load requires a neutral, a bypass source neutral must be provided. If the load does not
require a neutral and there is no neutral conductor connected at the bypass input, a neutral
to ground bonding jumper must be installed. DO NOT install both a source neutral and a
bonding jumper.
The UPS cabinet is shipped with a debris shield covering the ventilation grill on top of the
unit. Do not remove the debris shield until installation is complete. However, remove the
shield before operating the UPS. Once the debris shield is removed, do not place objects on
the ventilation grill. •
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