Nortel Meridian 1 Planning And Installation Manual page 59

Chapter 3 — System and site requirements
Table 9
AC input requirements for each NTDK91AA and NTDK92AA (Germany)
Recommended: 230 volts
Voltage
Maximum limits: 180 and 250 volts
Single phase
50 Hz
Frequency
550 VA maximum
Power
(I/P max)
16A
Fuse
Receptacles by DIN regulation
Outlet Type
Site requirements
The following is a list of required site features for an optimal Option 11C
Mini AC-powered system installation.
If the conditions below cannot be provided with a dedicated panel, use an
Isolation Transformer, as described under the heading "Alternative
AC-powered installation" on page 40.
• 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. The insulated copper ground conductor must be routed
through the same conduit as the supply conductors that feed the panel.
Option 11C Mini Planning and Installation Guide
Page 39 of 590