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Vertiv Liebert STS2 - 10.0 OPERATING INSTRUCTIONS

Vertiv Liebert STS2
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Vertiv | Liebert® STS2/PDU
User Manual | Rev. 6 | 10/2017 65
Figure 55 Control wiring for remote source selection option
Remote Source Selection
Source 1
Preferred
Source 2
Preferred
246
See Note 1
Notes
1. Customer provided normally open dry contacts.
rating 10mA at 30VDC.
2. Maximum cable length 500 ft. (152m) with
#16AWG 300V minimum, flexible stranded cable.
3. All control wiring (by others) must be run
separately from power wiring. Control wiring runs
should not be combined in the same conduit.
4. Refer to static transfer switch control connection
diagram for location of remote source selection opt.
5. All wiring must be in accordance with national
and local electrical codes.
S1 GNDS2 GND
TB50
135
PS213007
Rev. 2

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