Dell UPS 5600R User Manual
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Installation
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5
Insert the conduit through the wiring access entry and attach the conduit fitting to the panel.
Strip 0.5” (1.5 cm) of insulation from the end of each incoming wire.
CAUTION:
If the UPS does not have an automatic protection device against current backfeed, Dell
recommends installing an external isolating device (see Figure 19). After the device is installed, you must add
a warning label with the following wording or the equivalent on the external AC contactor:
RISK OF VOLTAGE BACKFEED. Isolate the UPS before operating on this circuit, then check for hazardous
voltage between all terminals.
External Distribution Panel
UPS
L/L1
L/L1
N/L2
N/L2
Legend
Coil Remote Switch
Magneto-Thermal Input Main Switch
AC Contactor ( see Table 1)
Neutral/L2
L1 Line Input
B
Q
T
N/L2
L/L1
B
Q
T
Figure 19. Typical External Isolating Device Installation
The following table lists AC contactors that can be used as backfeed protection devices.
Table 1. Backfeed Protection Devices
Manufacturer
Type
Rating
Tianshui 213 Electrical Apparatus Co., Ltd.
(E203071)
GSC1(CJX4-d)-4011
220-240 Vac, 42 FLA
Moeller GMBH
DILM(C)32-10
600 V, 40A
LS Industrial Systems Co., Ltd. (E108780)
GMC(D)-32
600 Vac, 45A