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ADCP-80-575 • Issue 2 • December 2006
Page 3
© 2006, ADC Telecommunications, Inc.
Depending on customer order, the fuse platform may have one fuse type alone, or GMT fuses in
combination with one other fuse type (KLM or TPA). The number of fuse positions on each bus
is dependent on the maximum current limit, as well as on the current value of the fuses and the
width of the fuse holders. The maximum current input per bus is 100 Amps.
Figure 1 shows the external features of a typical fuse platform (in this case, a dual bus fuse
platform with four KLM and four GMT fuses per bus).
1.3 Product Options
The following configurations of fuses are available:
• Four TPA fuses with four or ten GMT fuses
• Two or four KLM or KTK fuses with four or ten GMT fuses
• Any of the above fuse types alone including:
– Four TPA fuses per bus
– Two or four KLM or KTK fuses per bus
– Ten GMT fuses per bus
Fuse capacity varies per fuse type (see Section 1.8, Bus Capacity on page 8). The total fuse
output cannot exceed 100 Amps per bus (200 Amps per dual bus platform).
All fuse platforms have power-on LEDs that light in green indicating the presence of power and
fuse alarm LEDs that light in red indicating a blown fuse. In addition, the fuse alarm LEDs on
the enhanced KLM fuse platform have a green state indicating that a fuse is installed and
receiving power.
Two types of alarm contacts are available: wire wrap or screw-down barrier terminal strip.
Two fuse platform mounting options are available: EIA/WECO or ETSI. (All fuse platforms can
be installed in either a 19-inch or 23-inch rack. The fuse platform comes with mounting
brackets for both rack widths.)
Warning: Use of one bus only on a dual bus panel will result in false alarms for the unused bus.
Power is required on both buses on a dual bus panel for normal operation.
Note: The continuous output load of the equipment during normal operation should not
exceed 80% of the rated value of the fuse. This allows some room for manufacturing
tolerances and voltage fluctuations in the plant power mains.
Note: The continuous output load of the equipment during normal operation should not
exceed 80% of the rated value of the fuse. This allows some room for manufacturing
tolerances and voltage fluctuations in the plant power mains.