System Application Guide
SAG584622000
Spec. No. 584622000 (Model DCS4830)
Issue AB, November 18, 2009
Page 13 of 17
This document is property of Emerson Network Power, Energy Systems, North America, Inc. and contains confidential and proprietary information owned by Emerson Network Power, Energy
Systems, North America, Inc. Any copying, use, or disclosure of it without the written permission of Emerson Network Power, Energy Systems, North America, Inc. is strictly prohibited.
1.3 Environmental
Ratings
1.3.1 Operating Ambient Temperature Range:
-20°C to +65°C (-4°F to +149°F).
1.3.2 Storage Ambient Temperature Range:
-40°C to +85°C (-40°F to +185°F).
1.3.3 Humidity:
This DC-DC Converter System is capable of operating in an ambient relative
humidity range of 0 to 95%, non-condensing.
1.3.4 Altitude:
The maximum operating ambient temperature should be derated by 10°C at an
elevation of 10,000 feet. For elevations between sea level and 10,000 feet, derate the maximum
operating ambient temperature linearly.
1.3.5 Ventilation
Requirements:
Each Converter Module is fan cooled, using front to back
ventilation. The Converter Mounting Shelf must be located such that ventilation openings are
not blocked and temperature of the air entering the cabinet is not above or below the Operating
Ambient Temperature Range stated in this document.
1.3.6 Heat
Dissipation:
16.98 Watts per square foot / foot maximum.
1.3.7 Audible
Noise:
With three Converter Modules installed and operating, the audible noise at any
point 5 feet from any vertical surface of the equipment shelf does not exceed 60 dBA when
measured with a sound level meter conforming to ANSI S1.4.
1.3.8 EMI/RFI
Suppression:
This DC-DC Converter System conforms to the requirements of FCC
rules Part 15, Subpart B, Class B, for radiated and conducted noise.
1.3.9 Filtering:
Noise reflected back to the central office battery is within the parameters set forth in
Telcordia Technical Reference TR-TSY-000009, paragraph 5.0, using test measurements in
Telcordia Technical Reference PUB 43802, pages 5 and 6.
1.3.10 Compliance Information:
(A) Safety Compliance:
This unit meets the requirements of UL 1950, Standard for Information
Technology Equipment, and is UL Recognized as a power supply for use in Telephone,
Electronic Data Processing or Information Processing Equipment. This unit meets the
requirements of CSA 22.2, No. 950 and is tested and Certified by UL ("c UR") as a
Component Type Power Supply.
1.3.11 Mounting:
This product is intended only for installation in a Restricted Access Location on or
above a non-combustible surface.
This product must be located in a Controlled Environment with access to Craftspersons only.
This product is intended for installation in Network Telecommunication Facilities (CO, vault, hut,
or other environmentally controlled electronic equipment enclosure).
This product is intended to be connected to the common bonding network in a Network
Telecommunication Facility (CO, vault, hut, or other environmentally controlled electronic
equipment enclosure).
1.4 Standard
Features
1.4.1 Type of Power Conversion Circuit:
High Frequency.
1.4.2 Input
Protection:
(A) Fusing:
A 35-ampere non-user replaceable fuse is located in the positive input lead of each
Converter Module.
(B) Low Input Voltage Inhibit:
Operation of the Converter Modules will inhibit if the input
voltage drops to within the range of 19.25 to 20.5 volts. While operation is inhibited, the
Converter Shelf will draw no more than 20 mA. Operation will automatically resume after the
input voltage returns to within normal operating limits.
