Although the upper range conveniently puts you at the magic 60V limit, I believe that the 56 volts actually comes from the maximum float voltage anticipated for some battery plants. Remember, the equipment in a CO normally operates at the float voltage, not the nominal battery voltage. The lower limit anticipates the maximum expected drop in battery voltage when a CO loses commercial power and before backup generators can kick in.
Randy Ivans Global Program Manager -Telecommunications Underwriters Laboratories Inc. 1285 Walt Whitman Rd. Melville, NY 11747 TEL: 631-271-6200; Ext. 22269 FAX: 631-439-6096 NOTE NEW AREA CODE FOR UL MELVILLE! email: [email protected] ********* Internet E-mail Confidentiality Disclaimer ********** This e-mail message may contain privileged or confidential information. If you are not the intended recipient, you may not disclose, use, disseminate, distribute, copy or rely upon this message or attachment in any way. If you received this e-mail message in error, please delete the e-mail and any attachments and notify Underwriters Laboratories Inc. at [email protected]. UL does not accept liability for any errors, omissions, corruption or virus in the contents of this message or any attachments that arise as a result of e-mail transmission. **************************************************************************
