Nortel BES1020-24T PWR NT5S03MBE5 用户手册

• Input voltage (AC version): 100 to 240 VAC @ 50 to 60 Hz

• Input power consumption (AC version):

- BESBES1010-24: 54W maximum
- BES1010-48: 100W maximum
- BES1020-24: 225W maximum
- BES1020-48: 380W maximum

• Input current (AC version): 0.8 A @ 100 VAC, 0.4A @ 240 VAC

- BES1010-24: 1.2 Amp
- BES1010-48: 1.6 Amp
- BES1020-24: 3.6 Amp
- BES1020-48: 5.65 Amp

• Maximum thermal output:

- BES1010-24: 184 BTU/hr
- BES1010-48: 341 BTU/hr
- BES1020-24: 768 BTU/hr
- BES1020-48: 1297 BTU/hr

• Calculated MTBF @ 25°C:

- BES1010-24: 312,426 hrs
- BES1010-48: 178,894 hrs
- BES1020-24: 201,415 hrs
- BES1020-48: 132,701 hrs

Accoustic Noise — Noise level of 45dB

• CISPR 22, Class A
• CISPR 24, Class A
• US: CFR47, Part 15, Subpart B, Class A
• Canada: ICES-003, Issue 3, Class A
• Australia/New Zealand. AS/NZS 3548, Class A
• Japan: VCCI, class A
• Taiwan: CNS 13438, Class A
• Europe: EN55022, Class A and EN55024
• EN61000-3-2, EN61000-3-3
• EN61000-4-2, EN61000-4-3, EN61000-4-4, EN61000-4-5, 

EN61000-4-6, EN61000-4-8, EN61000-4-11

Nortel is a recognized leader in delivering communications capabilities that enhance the human
experience, ignite and power global commerce, and secure and protect the world’s most critical
information. Our next-generation technologies, for both service providers and enterprises, 
span access and core networks, support multimedia and business-critical applications, and help
eliminate today’s barriers to efficiency, speed and performance by simplifying networks and
connecting people with information. Nortel does business in more than 150 countries. 
For more information, visit Nortel on the Web at www.nortel.com. 

For more information, contact your Nortel representative, or call 1-800-4 NORTEL or 
1-800-466-7835 from anywhere in North America.

Nortel, the Nortel logo, Nortel Business Made Simple and the Globemark are trademarks of
Nortel Networks. All other trademarks are the property of their owners.

Copyright © 2007 Nortel Networks. All rights reserved. Information in this document is
subject to change without notice. Nortel assumes no responsibility for any errors that may
appear in this document.

> BUSINESS MADE SIMPLE

In the United States:
Nortel 
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Research Triangle Park, NC 27709 USA

In Canada:
Nortel 
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Toronto, Ontario M9C 5K1 Canada

In Caribbean and Latin America:
Nortel 
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In Europe:
Nortel 
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In Asia:
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Singapore 307591

• IEC 60950, CB report and certificate with all

national deviations

• UL 60950

• CSA 22.2 No. 60950950

• EN 60950

• UL-94-V1 flammability requirements for PC board

• NOM-019

RFC 1493 (Bridge MIB); RFC 2863 (Interfaces Group
MIB); RFC 2665 (Ethernet MIB); RFC 2737 (Entity
MIBv2); RFC 2819 (RMON MIB); RFC 1271 (RMON);
RFC 1157 (SNMP); RFC 3412 (SNMP Message
Processing); RFC 791 (IP); RFC 792 (ICMP); RFC 793
(TCP); RFC 783 (TFTP); RFC 826 (ARP); RFC 768
(UDP); RFC 951 (Bootp); RFC 2236 (IGMPv2); RFC
1112 (IGMPv1); RFC 1945 (HTTP v1.0); RFC 894 (IP
over Ethernet); RFC 2674 (Q MIB); RFC 2578
(LDAPv2); RFC 3621 (PoE MIB); RFC 2579 (SMIv2);
RFC 3411 (SNMP Frameworks); RFC 2011 (MIB-II); RFC
2021 (RMON MIBase v2 using SMIv2); RFC 3413
(SNMP Applications); RFC 3415 (VACM for SNMP);
RFC 3418 (MIB for SNMP); RFC 2933 (IGMP MIB);
RFC 3584 (Co-existence of SNMP v1, v2, and v3);
RFC 3291 (Textual Conventions for Internet Network
Addresses); RFC 2213 (Integrated Messaging Services
MIB); RFC 3289 (Differentiated Services MIB)

Technical specifications

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