ADCP-80-524 • Issue 1 • November 2001

4.13 Voltage Designation Label

Write the voltage used in the fuse panel on the voltage designation label (see Figure 9) and attach the label to the back of the panel.

5 TESTING

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.

5.1Quality Control

Each unit is thoroughly tested at the ADC factory. The following tests are recommended, however, to assure that no damage has occurred during shipping or handling. Both bus A and bus B circuits need to be tested. The tests in Subsection 5.2, Resistance Test and Subsection 5.3, Wiring Connections Torque Measurements must be performed without power applied to the fuse panel.

5.2Resistance Test

Caution: Before performing this test, verify that the input and output power is not applied to the fuse panel connectors,

Measure the resistance at each bus input connector using a multi meter connected to the BATT and RTN input terminals. A resistance of at least 500 ohms should be read on the meter (some meters will indicate a resistance of several Megohms because their input voltage is not high enough to break down the forward conductance of the diodes used in the alarm circuit). Any resistance higher than 500 ohms is acceptable.

5.3Wiring Connections Torque Measurements

Measure the torque of all input, output, and fuse failure alarm relay contact connections included in the non-powered testing paragraphs above using a torque screwdriver that is calibrated in pound-force inches or Newton meters. The torque specifications are printed on the rear of the fuse panel adjacent to each connector.

5.4Power Indication Test

After checking input resistance and verifying the wiring connections torque, power may be applied to the fuse panel. Upon power application, the alarm indicators should not light unless there is a fuse that has failed. The alarm relay contacts should provide an open circuit between the common (C) terminals and the normally open (NO) terminals and a closed circuit between the common (C) and normally closed (NC) terminals.

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© 2001, ADC Telecommunications, Inc.