48 Vdc Output Connections - Vertiv NetSure-48 VDC Installation And User Manual

Vertiv™ NetSure™ -48 VDC Bulk Output Rectifier System Installation and User Manual

7.6 -48 VDC Output Connections

ALERT! Check for correct polarity before making connections.
DC output leads are connected to the output busbars located on the back of the system as shown in Figure 7.4. These busbars
provide studs for installation of customer-provided two-hole lugs.
Output wire size and lug requirements are determined by site requirements. Refer to the American National Standards Institute
(ANSI) approved National Fire Protection Association's (NFPA) National Electrical Code (NEC), applicable local codes, and your
specific site requirements. All lugs for customer connections must be ordered separately. See Table 4.1 for available lugs. For other
available lugs and hardware, refer to drawings 031110100 through 031110300. For recommended wire sizes and lug selection at
maximum rated output current, refer to Table 7.4.
Table 7.4 Recommended DC Output Wire Sizes and Lugs
Recm 90°C Wire Size (1) (AWG)
1/0 AWG
2/0 AWG
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.
Recommended wire sizes are sufficient to restrict voltage drop to 1.0 volt or less at listed branch current for the loop lengths shown.
2
Loop length is the sum of the lengths of the positive and negative leads.
3 Wire Size / Loop Length Combination Calculated using 40 °C Ambient Operating Temperature.
4 These lugs are two-hole for 1/4" bolt clearance on 5/8" centers.
Figure 7.4 -48 VDC Output Connections
Rear
Shield removed in
illustration for clarity only.
16
Recommended DC Output Wire Sizes and Lugs
Loop Length (2) (feet)
63.4 (3)
79.9 (3)
GND RTN
-48 VDC Output:
1/4-20 studs on 5/8" centers for
-48 VDC SUPPLY
installation of customer provided
two-hole lugs.
Maximum Lug Width: 0.93 inches.
Hardware:
1/4-20 Hex Nut
1/4" Lock Washer
1/4" Flat Washer
Torque to 58 in-lbs.
Proprietary and Confidential © 2022 Vertiv Group Corp.
Recommended Crimp Lug (4)
245391400
245391500