Lucent Technologies Release 6 manual Install Sneak Fuse Panels

DEFINITY Enterprise Communications Server Release 6	Issue 5
Installation and Test for Multi-Carrier Cabinets 555-230-112	May 1998

2Install Telecommunications Cabling

Install Sneak Fuse Panels Page 2-13

Cable clamps are required in installations with cable slack managers. At the rear of the cabinets, install 2 cable clamps using the screws provided. These clamps hold the 25-pair input/output or MDF cables in place. Figure 2-6 shows cable clamp placement and cable routing.

Install Sneak Fuse Panels

Sneak current protection is required between the incoming RJ21X or RJ2GX network interface and the system for both trunk and off-premise circuit packs.

The Model 507B sneak current fuse panel, or equivalent, is recommended for sneak current protection. See Figure 2-7. The panel contains two 25-pair connectors, fuse removal tool, and fifty 220029 Sneak Fuses (and 2 spares).

B25A connector cables connect the network interface to the sneak fuse panel. Also, 157B connecting blocks equipped with SCP-110 protectors can be used for sneak current protection.

Table 2-1. Sneak Fuse Panel Ordering Information

Description		Comcode
157B	Connecting Block	403613003
SCP-110 Protector		406948976
507B	Sneak Current Fuse Panel	107435091
220029 Sneak Current Fuse		407216316

NOTE:

Sneak current protectors with a rating of 350 mA at 600 Volts must be UL listed for domestic installation and CSA certified for Canadian installation.

The 507B includes 52 sneak fuses and 2 cables and can be ordered using

PEC code 63210.

The SCP-110 protectors are used with 110-type hardware and on the 507B Sneak Fuse Panel. The SCP-110 Protectors can be ordered separately and installed on the 157B connecting block. Fifty protectors are required per block.