Power Connections

Caution Dual sources with opposite-polarity grounding damage equipment.

In Figure 16, either the positive source terminal or the negative source terminal is tied to ground.

Figure 16 Connecting to One Source Only—Source A or Source B

A-

A-

+

+

A+

A+

B+

B+

 

B-

B-

127037

 

In Figure 17, source A and source B share common negative terminal connections.

Figure 17 Connecting Source A and Source B with Common Negative Terminals

Va

+

+

Vb

A-

A+

B+

B-

127039

In Figure 18, source A and source B share common positive terminal connections. This configuration is allowed only if Va equals Vb (within 0.25 V).

Caution If source A and source B are wired with common positive terminals and their voltages are unequal by more than 0.25 V, the higher-voltage source can discharge into the lower-voltage source through the negative terminals. Excessive discharging currents through these terminals can actuate one or both of the dual- input DC power supply’s internal A– or B– fuses, resulting in lack of redundancy or system failure. When source A and source B are within 0.25 V, discharge current is minimal.

Connecting Cables to Cisco 3800 Series Routers

 

OL-5970-02

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Cisco Systems OL-5965-01 warranty Connecting to One Source Only-Source a or Source B
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OL-5965-01 specifications

Cisco Systems OL-5965-01 is a powerful learning tool designed to provide a comprehensive understanding of Cisco networking technologies. This courseware is part of Cisco’s extensive portfolio aimed at both aspiring and seasoned networking professionals. By using OL-5965-01, learners can access valuable resources that help them master various Cisco technologies and prepare for associated certification exams.

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The technology behind OL-5965-01 is designed to be user-friendly and accessible. The platform is built to cater to both novices and experienced technicians, ensuring that users of all skill levels can benefit. Regular updates help ensure that the content remains relevant in a rapidly evolving technological landscape.

In summary, Cisco Systems OL-5965-01 is an essential resource for those looking to enhance their networking expertise. By offering practical experience, interactive learning, and comprehensive coverage of Cisco technologies, this courseware aligns well with the needs of IT professionals. It stands as a vital tool for anyone looking to advance their knowledge and career in networking.
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