Chapter 3 — System and site requirements

Page 57 of 332

 

 

Table 13

AC input requirements for each NTDK91 and NTDK92 (Germany)

Voltage

Recommended: 230 volts

Maximum limits: 180 and 250 volts

 

Single phase

 

 

Frequency

50 Hz

 

 

Power

550 VA maximum

(I/P max)

 

 

 

Fuse

16A

Outlet Type

Receptacles by DIN regulation

 

 

Site requirements

The following is a list of required site features for an optimal Option 11C Mini AC-powered system installation.

If a dedicated panel cannot provide the conditions listed below, use an Isolation Transformer. Refer to “Alternative AC-powered installation” on page 58.

Dedicated circuit breaker panel

A dedicated circuit breaker panel provides power only to the Option 11C Mini system and its related hardware, such as TTYs and printers

Note: You can not always power a complete system from a single circuit-breaker panel. For example, when chassis are located remotely.

Insulated copper ground conductor

Insulated copper ground conductor connects the ground bus in the dedicated panel to the main service panel ground or building ground reference. Route the insulated copper ground conductor through the same conduit as the supply conductors that feed the panel.

Isolated-ground receptacles

All outlets connected to the dedicated panel must be of the isolated ground type. Use a separate circuit for each device connected to the panel. Outlets that provide service to the chassis must be close enough so that the power cord can reach the chassis power supply.

Isolated ground bus in the electrical panel, where permitted by local codes

Option 11C Mini Planning and Installation Guide

Page 57
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Nortel Networks Option 11C Mini manual Site requirements, Max Fuse