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Polycom MGC-100 Technical Bulletin

World wide field communication
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Technical Bulletin
Field Communication –
MGC-100 Chassis Power Issue with Plus Modules
World Wide Field Communication – MGC-100
•
Power Limitation with older AC and DC MGC-100 chassis
•
Upgrading older MGC-100 Chassis with Plus Modules
•
Power Redundancy on Older MGC-100 Chassis with (3) Power
Supplies
Upgrading older MGC-100 chassis (both AC and DC) with MGC "plus" modules MAY
require upgrading both the Chassis and Power Supplies. This document describes
the differences, details and corrective actions.
Upgrading older MGC-100 Chassis with Plus Modules
Older MGC-100 chassis (ASY10003F) have 10 amp fuses which are not able to
support a fully loaded system with plus cards (e.g. Audio+, IP+, Video+). This
limitation is due to the 10 Amp fuse, which cannot be upgraded in the field.
MGC-100 Redundant Power Supply Issue
Please be aware that when using old 300W power supplies (PWR049E) with an
MGC-100 chassis (both AC and DC) that consumes more than 600W, the third
power supply is no longer redundant.
What are the various types of MGC Chassis and Part Numbers?
There are several MGC-100 chassis types which correspond to the 6 Power Supply
types listed. The DC and NEBS chassis exist, but are rare in comparison to standard
110/220 VAC systems.
•
Older MGC-100 chassis with10 amp fuse (ASY1003A - ASY1003F) – these
can easily be identified as the front power supply panel is marked PWR.
These units exist in the field, but are no longer shipping. See figure 1.
•
The new MGC-100 chassis with 15 amp circuit breaker (ASY1003G) -
shipping as of March 2004 – can be identified as the front power supply
panel is marked POWER. See Figure 2.
•
The new DC compliant chassis (ASY2023D-R5) with new 450W DC power
supply replaces old DC chassis (ASY2023A-ASY2023C)
What are the various types of MGC Power Supplies?
There are six types of MGC-100 power supplies:
Version: 09082006
1 of 6

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Summary of Contents for Polycom MGC-100

  • Page 1 Power Redundancy on Older MGC-100 Chassis with (3) Power Supplies Upgrading older MGC-100 chassis (both AC and DC) with MGC “plus” modules MAY require upgrading both the Chassis and Power Supplies. This document describes the differences, details and corrective actions.
  • Page 2 Total Number of Cards Supported in chassis: Table A: MGC-100 with three 300 Watt Power Supplies and 10-amp Fuse in 110 Volt AC installations. Japan may be less. What is the maximum number of cards that can be installed in the...

  • Page 3: Frequently Asked Questions

    Can I buy 450 Watt AC power supplies and put them into my older chassis? Yes. Polycom is only selling the 450 Watt AC Power Supply, so it is possible to install them in your existing system. However, the older Fuse can only supply 10-amps, so you will not receive any additional benefit from the newer supply –...
  • Page 4 Please contact your Certified Polycom Reseller or Polycom Global Services for assistance. Q10: If I order a new MGC-100 Chassis, does it come with a fuse or circuit breaker? A10: Polycom is only shipping the 15-amp circuit breaker in all MGC-100 and MGC+100 chassis.
  • Page 5 3) The voltage in Japan has been reported as low as 90 VAC, which increases the current requirements and decreases the number of cards that can be installed. Please work with your Certified Polycom Reseller or Polycom Sales Representative to evaluate your system power requirements.
  • Page 6 Power Supply, Fuse, and Circuit Breaker images: Figure 1. Original 300 Watt PS on Left; New 450 Watt PS on Right. Fuse Figure 2: Older 10-Amp fuse on Left; Newer 15-Amp Circuit Breaker on Right. MGC Product Bulletin Version: 09082006 6 of 6...