Power. Symmetricom TimeSource 500

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Power. Symmetricom TimeSource 500 | Manualzz

S S S S S S S S S S S S S S S S S S S S S S S S S S S S S

Power

Warning:

This equipment is intended for installation in a restricted access location. Power source protective fusing must be provided as part of the installation.

Caution:

Do not apply power to the TimeSource 3500 before instructed in this procedure. Before connecting the power cables to the TimeSource 3500, ensure the fuses are removed from the fuse panel that supplies power to the power cables.

Note: Input power is reverse polarity protected; there are no user replaceable fuses in the TimeSource 3500.

Power connections are made on power terminal blocks TB1 and

TB2. Refer to Figure 26 for the location of the terminals on the rear of the shelf, and refer to Figure 28 for the terminal connections.

Remove the protective covers from the terminal blocks, if covered.

Ensure the power wires are long enough to reach from the shelf rear panel to the office battery source connection.

Use two 18 AWG (1.024 mm) stranded wires for the power connection, one with red insulation (–48V), and the other with black insulation (RTN). Crimp a supplied spade lug to each wire.

Connect the power wires with red insulation to the –48V wire receptacles on TB1 and TB2. Connect the power wires with black insulation to the RTN wire receptacles on TB1 and TB2.

Replace the protective covers on the terminal blocks.

Note:

Two separate office battery supplies (–48V A and –48V B) are recommended. If separate office battery supplies are not available, connect a single office battery to both inputs (TB1 and

TB2) to avoid a standing battery-failure alarm.

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TimeSource 3500

Installation

097-72050-01 Issue 7: August 2003

113

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