Vertiv
™
NetSure
™
-48 VDC Power System
System Application Guide
Spec. No: 582140001
Proprietary and Confidential © 2022 Vertiv Group Corp.
SAG582140001
Model No: 801
NLDB
, 801
NLEB
, 801
NL
-
B
Page 65
Revision T, September 28, 2022
SPECIFICATIONS
1.
SYSTEM
1.1
DC Operating Voltage
1.1.1
Nominal: -48Vdc.
1.1.2
Range: -42Vdc to -60Vdc.
1.2
Environmental Ratings
Note:
See also ‘Environmental Ratings’ in the Rectifier Module section.
1.2.1
Operating Ambient Temperature Range: 0°C to +40°C (+32°F to +104°F).
1.2.2
Storage Ambient Temperature Range: -40°C to +65°C (-40°F to +149°F).
1.2.3
Humidity: This system is capable of operating in an ambient relative humidity range of 0% to 95%,
noncondensing.
1.2.4
Altitude: The maximum operating ambient temperature should be derated by 10°C at an elevation of 10,000
feet above sea level. For elevations between 3,000 feet and 10,000 feet, derate the maximum operating
ambient temperature linearly.
1.2.5
Heat Dissipation: With Rectifier Module output adjusted to 54.48 volt DC at rated full load and nominal input
voltage.
No. of Rectifier
Modules
Power Bay Output
Current (Amperes)
BTU/Hr
(Typical)
1R485800
Rectifier
1R485800L
Rectifier
1
100
1472
1739
24
2400
35328
41726
1.2.6
Ventilation Requirements: The Rectifier Modules are fan cooled and utilize front to back forced ventilation.
The Power Bays must be mounted so ventilating openings are not blocked and temperature of the air entering
the Rectifier Module shelf does not exceed the Operating Ambient Temperature Range stated above.
1.2.7
Audible Noise: The audible noise does not exceed the following when measured at any point two feet from any
vertical surface of a Power Bay and five feet from the floor using a Sound Level Meter conforming to ANSI S1.4.
No. of Rectifier
Modules
Audible Noise
1
50 dBA
24
60 dBA
1.2.8
EMI/RFI Suppression: Rectifier Modules operating in a Power Bay conform to the requirements of FCC rules
Part 15, Subpart B, Class A for Radiated and Conducted emissions limits.
1.2.9
Surge Protection: Compliance with EN61000-4-5 Installation Class 4, and capable of withstanding surges per
ANSI/IEEE C 62.41-1991 Category B across the input terminals.
Note:
This level of protection is a widely used standard for telecommunications power equipment. As with
all such equipment, it is the end user's responsibility to provide an adequately sized Surge
Suppression Device at the commercial power service entrance of the building that reduces all
incoming surges to levels below the classes/categories stated for the equipment.
1.2.10
ESD Protection: Complies with EN61000-4-2 Level 4 (8kV contact).
1.2.11
Electrical Fast Transient / Burst Immunity: Complies with EN61000-4-4 Level 4.
1.2.12
Mounting: This Power System is intended only for installation in a Restricted Access Location on or above a
non-combustible surface. Typical industry standards recommend minimum aisle space clearance of 2'6" for
the front of the relay rack and 2' for the rear of the relay rack.
