5.5Connection Polarity Test
To verify that the input power wires are connected to the correct terminals, measure the voltage between the input return connector (RTN) and the chassis ground using a multi meter. The voltage should be less than 2.0 Vdc. If the voltage is more than 2.0 Vdc, reverse the input power wires and measure the voltage between the input return connector (RTN) and the chassis ground again to determine that the voltage is less than 2.0 Vdc.
5.6Fuse Alarm Test
Place a fuse that has failed in one of the fuse positions on each bus. The visual fuse alarm indicators (LED) for the bus will change from unlighted to a red light, and the fuse failure alarm relay will operate. Replace the failed fuses with known good fuses.
6 OPERATION
Caution: This equipment employs electrical voltage and amperage levels which may be considered an electrical hazard. Care should be exercised to assure that only qualified personnel are allowed to install, operate, maintain, or otherwise come in contact with the fuse panel when it is energized. Only insulated tools should be used on energized elements of the panel.
All fuse panel circuits are operational as soon as power is applied to the input connectors. The alarm indicator should not light when power is applied.
Operation of the fuse panel consists of removing and replacing fuses when they fail. If a fuse fails, the alarm LED indicator for the bus lights, and the external and remote alarms are activated (if present).
7 MAINTENANCE
Caution: This equipment employs electrical voltage and amperage levels which may be considered an electrical hazard. Care should be exercised to assure that only qualified personnel are allowed to install, operate, maintain, or otherwise come in contact with the fuse panel when it is energized. Only insulated tools should be used on energized elements of the panel.
7.1Inspection
Inspect the fuse panel periodically (every six months is recommended) for damage to the fuses, damaged or broken wires on the power outputs and the external alarm connections. Inspect for excessive dust and dirt that block the vents.
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© 2001, ADC Telecommunications, Inc.