Delta Modulon DPH series - Page 93

5-17
5
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Installation and Wiring
5
For how to perform wiring for the Delta or non-Delta external maintenance bypass
cabinet, please refer to Table 5-4. For the detailed information about the Delta
or non-Delta external maintenance bypass cabinet, please refer to 5.1 Before
Installation and Wiring.
Table 5-4: Delta or non-Delta External Maintenance Bypass Cabinet Wiring
Information
No. Item*
2
Description Function
1
Input
Breaker or
Switch (Q1)
Includes
R/ S/ T/ N
terminals*
3
.
The breaker or switch (Q1) connects to
the main AC source.
2
Bypass
Breaker or
Switch (Q2)
(Only for
dual input
application)
Includes
R/ S/ T/ N
terminals*
3
.
The breaker or switch (Q2) connects to
the bypass AC source.
3
Manual
Bypass
Breaker or
Switch (Q3)
Includes
R/ S/ T/ N
terminals*
3
.
• Single Input: The breaker or switch (Q3)
connects to the main AC source.
• Dual Input: The breaker or switch (Q3)
connects to the bypass AC source.
4
Output
Breaker or
Switch (Q4)
Includes
R/ S/ T/ N
terminals*
3
.
The breaker or switch (Q4) connects to
the critical loads.
5
Battery Input
Terminals
Include +/ -/
N terminals.
• If you choose to use the Delta external
maintenance bypass cabinet (optional),
please connect these terminals to the
external battery cabinet.
• If you choose to use the non-Delta
external maintenance bypass cabinet,
please contact service personnel for
battery configurations.
6
Includes one
grounding
terminal.
For the Delta or non-Delta external
maintenance bypass cabinet’s protective
earthing.
7
Includes at
least three
grounding
terminals.
The three grounding terminals shall
connect to
1. the UPS’s grounding terminal (
),
2. the external battery cabinet’s grounding
terminal (
), and
3. the connected critical loads’ grounding
terminal (
).
Please refer to Figure 5-16 and Figure
5-19.