Zhone Technologies 4000E Manuale Utente

IPD4-A2-ZZ40-20

 4000E IP Broadband Loop Carrier Installation Instructions

19

1 Read and follow all warning notices and instructions marked on the 

product or included in the manual.

2 Do not attempt to service this product yourself, as opening or removing 

covers may expose you to dangerous high voltage points or other risks. 

Refer all servicing to qualified service personnel.

3 WARNING: This unit supports a redundant 48 VDC power input 

connection. Disconnect both sources of input power before servicing.

4 This product is to be installed only in a Restricted Access Location 

(dedicated equipment rooms, equipment closets or the like) in accordance 

with articles 110-16, 110-17 and 110-18 of the National Electrical Code, 

ANSI/NFPA 70.

5 This product is to be connected to a 48 VDC SELV supply source that is 

electrically isolated from the AC source.

6 The positive terminal of the 48 VDC source is to be reliably connected to 

earth. Connect a green/yellow earthing (grounding) wire to the protective 

earthing (grounding) lug connector, identified by the protective earth 

symbol on the chassis.

7 A readily accessible disconnect device as part of the building installation 

shall be incorporated in fixed wiring. The disconnect device (a 48 VDC, 

10 A, single pole circuit breaker or switch) must be included in the 

ungrounded supply conductor. Over current protection must be included 

with a 48 VDC, 10 A fuse or circuit breaker in the ungrounded conductor. 

Use minimum 16 AWG (2.5 mm

2

) fixed power source wires with strain 

retention.

8 Do not allow anything to rest on the power cord and do not locate the 

product where persons will walk on the power cord.

9 Slots and openings in the cabinet are provided for ventilation. To ensure 

reliable operation of the product and to protect it from overheating, these 

slots and openings must not be blocked or covered.

10 General purpose cables are described for use with this product. Special 

cables, which may be required by the regulatory inspection authority for 

the installation site, are the responsibility of the customer. To reduce the 

risk of fire, use a UL Listed or CSA Certified, minimum No. 26 AWG 

(0.128 mm2) telecommunication cable, or comparable cables certified for 

use in the country of installation.

11 A rare phenomenon can create a voltage potential between the earth 

grounds of two or more buildings. If products installed in separate 

buildings are interconnected, the voltage potential may cause a hazardous 

condition. Consult a qualified electrical consultant to determine whether 

or not this phenomenon exists and, if necessary, implement corrective 

action prior to interconnecting the products.

12 In addition, if the equipment is to be used with telecommunications 

circuits, take the following precautions:
— Never install telephone wiring during a lightning storm.