Application Guide

System Application Guide SAG584000300
NetSure™ 4015 30kW 400V DC Power System Issue AB, April 5, 2013
Spec. No. 584000300 (Model 4015-X003)
Page 23 of 32
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AC Input (Power and Control Sub-Rack)
Refer to Table 7 for recommended branch circuit protection, wire sizes, and lugs.
AC INPUT
The system requires one AC feed which provides input power for the two rectifiers.
(Screw-Clamp Type Terminals Provided)
Input
Voltage
(3-Phase)
Maximum
Input Current
(30kW)
Recm.
Branch Circuit
Protection
1
+35 C Ambient Temperature
Recm.
Wire Size
2, 3, 4
Conduit Size
5
(if used)
380V AC
48A
63A
6
4 AWG
(25mm
2
)
1” (25mm)
400V AC
46A
63A
6
4 AWG
(25mm
2
)
1” (25mm)
480V AC
38A
50A
7
6 AWG
(16mm
2
)
3/4” (19mm)
AC INPUT GROUNDING LEAD
(Grounding Studs for Lug Connection Provided)
Lug Requirements
Wire Size
Recommended Lug
(Emerson P/N)
2-Hole,
10-32 Bolt Clearance Holes,
5/8" Centers
Same as AC Input
4 AWG (25mm
2
):
245350300 (single hole lug)
6 AWG (16mm
2
):
245346500 (double hole lug)
1
The AC input branch circuit protective device should be of the time-delay or high inrush type.
2
Wire sizes based on recommendations of the American National Standards Institute (ANSI) approved
National Fire Protection Association's (NFPA) National Electrical Code (NEC). Table 310-16 for copper
wire at 75 C conductor temperature operating in ambient of +35 C was used. For other operating
ambient temperatures, refer to the National Electrical Code. For operation in countries where the NEC
is not recognized, follow applicable codes.
3
Equipment grounding conductors must be provided with the AC input conductors supplied to the shelf.
Frame ground terminals must be connected to earth ground, not power system neutral. Equipment
grounding conductor size based on recommendations of the NEC Table 250-122 for copper wire. If
aluminum or copper clad aluminum grounding conductor is used, refer to Table 250-122 for increased
conductor size. For operation in countries where the NEC is not recognized, follow applicable codes.
4
THHW 75 C wire.
5
Conduit sized for three (3) current carrying conductors and one (1) ground conductor per conduit
(based on NEC recommendations). For operation in countries where the NEC is not recognized, follow
applicable codes. When using power cords, power cords must meet the temperature and voltage
requirements for the installation.
6
The minimum OCPD is 60A and the maximum OCPD is 70A.
7
The minimum OCPD is 50A and the maximum OCPD is 60A.
Table 7
Recommended AC Input Branch Circuit Protection and Wire Sizes