
TS_619_00 PW9000DPA S2 User Manual 13/3/17
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3: Installation
3.4
Installation planning (electrical)
3.4.1 General requirements
Figure 3.2 Input/output power connections for single feed and dual feed installations
It is the customer’s responsibility to design and install the UPS supply and distribution circuits and provide the external
fuses, isolators and cables required to connect the UPS input and output power supplies, and external battery (where
used). The information provided in this section should assist in the planning and preparation of the UPS power cabling.
As shown in Figure 3.2, the UPS input mains and bypass mains inputs should be connected to the utility mains supply
through an LV-switchgear panel and protected by a circuit breaker or fused isolator. These, not only provide overload
protection for the UPS cabinet but also serve as the primary means of isolating the UPS from the mains supply as the UPS
cabinet itself does not contain an internal mains isolator switch.
Similarly, the UPS output should be connected to the load equipment via a suitably fused load switchgear panel.
Figure 3.2 shows an external battery cabinet used with the DPA 250 (and DPA 50 or DPA150 if long autonomy times are
required). Suitable battery isolators must be fitted inside the external battery cabinet. This requires a three-pole breaker,
connected to the battery positive, negative, and mid-point (neutral), as shown. Uninterruptible Power Supplies Ltd. can
supply a matching battery cabinet containing the necessary fuses and switchgear.
UPS
CABINET
Rectifier
Inverter
Static Switch
3L3
3N
PE
3L1
3L2
Sta
tic
B
yp
a
ss
L
in
e
UP
S
M
o
du
le
1L3
1N
1L1
1L2
EXTERNAL
BATTERY
UPS
CABINET
EXTERNAL
BATTERY
FUSES
Rectifier
Inverter
Static Switch
MAINT.
BYP (IA1)
3L3
3N
PE
3L1
3L2
Sta
tic
B
yp
a
ss
L
in
e
UP
S
M
o
du
le
1L3
1N
PE
1L1
1L2
Parallel
Isolator
(IA2)
UPS INPUT
MAINS DEVICE
UPS OUTPUT
DEVICE
2L3
2L1
2L2
PE
MAINT.
BYP (IA1)
Parallel
Isolator
(IA2)
N
N
UPS SYSTEM INPUT SUPPLY
UPS SYSTEM INPUT SUPPLY
UPS INPUT
MAINS DEVICE
UPS BYPASS
MAINS DEVICE
UPS OUTPUT
DEVICE
UPS SYSTEM OUTPUT
UPS SYSTEM OUTPUT
EXTERNAL
BATTERY
EXTERNAL
BATTERY
FUSES
N
N
Содержание PowerWave 9000DPA S2
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