Generex CS141 - Page 63

Version: 2020-09-04
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Copyright of the European Union is effective (Copyright EU) (c) 2019 GENEREX Systems GmbH, Hamburg, Germany, All rights reserved
TEL +49(40)22692910 - EMAIL generex@generex.de - WEB www.generex.de (This and all other product datasheets are available for download.)
Note:
What is the difference between the RF1628 UPS interface and the APC Smart Network?
In principle, the APC card can handle the RFC1628 standard - you will be able to query basic information about the UPS. However, the
APC cards often uses their own OIDs. These OIDs are specific to AP and not conform to the RFC1628 standards.
Therefore, it is recommended to use the APC Smart network setting instead of RFC1628 interface.
Setting up the destination card using SNMP v3 at CS141
The CS141 supports SNMP v1, v2, and v3 in this mode.
Enter the access data for the destination card according to your configuration and click Apply
UPS with center tab
Tipp:
The CS141 will provide this function in case of using a UPS with center tab support.
What is a ‘Center Tap‘
Modern UPS systems divide their single battery pack into two symmetrical pack parts and use a center tap. Bay using a center tap, they
increase the nominal efficiency:
Measurement difference and charge difference
The measurement when using a center tap is basically a way of looking at it:
You measure from the UPS to the center tab and then on the other side from the center tab back to the UPS. Since the batteries all
remain connected in series, two phenomena can be noticed when there are voltage problems: If a battery has a problem on the
negative string, the general voltage for all batteries will decrease.
The individual measurements of the string will show mor details: