System Application Guide
SAG582127000
Spec. No. 582127000 (Model 721
NPBB
)
Issue AF, February 26, 2014
Page 89 of 125
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DC INPUT TO LIST 47 DC INPUT TERMINATION ASSEMBLY
(400 Volts DC)
Provides “1 DC Feed per 3 Converters” Input Terminations
(System with Spec. No. 58870500040 Converter Shelves)
Input
Voltage
Input
Current
Overcurrent
Protection
(4)
40°C Ambient
Temperature
Wire
(1) (2) (3) (7)
Conduit
Size
(5) (6)
400V DC
33A
45A
6 AWG
1”
1
Wire sizes based on recommendations of the American National Standards Institute (ANSI) approved National
Fire Protection Association's (NFPA) National Electrical Code (NEC). Table 310.15 (B) (16) for copper wire at
90°C conductor temperature. For operation in countries where the NEC is not recognized, follow applicable
codes.
2
Equipment grounding conductors must be provided with the DC input conductors supplied to the shelf.
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.
3
THHN 90
°
C Wire.
4
Maximum over current protection device is 60A at 40
°
C.
5
System with Four (4) Spec. No. 588705000 Converter Shelves: Conduit sized for two (2) current carrying
conductors and one (1) ground conductor per conduit (based on NEC recommendations), for three (3)
converters. For operation in countries where the NEC is not recognized, follow applicable codes.
6
System with Five (5) Spec. No. 588705000 Converter Shelves: Conduit sized for four (4) current carrying
conductors and one (1) ground conductor per conduit (based on NEC recommendations), for six (6) converters.
For operation in countries where the NEC is not recognized, follow applicable codes.
7
Maximum loop length is 100 meters (328 feet). Loop length is the sum of the lengths of the positive and
negative leads.
Table 26
Recommended DC Input Branch Circuit Protection and Wire Size when Using
List 47 “1 DC Feed per 3 Converters” DC Input Termination Assembly,
System with Spec. No. 588705000 Converter Shelves
