ADC 70 4.6General Wiring Recommendations, RTN, RTN, BATT, BATT, RETURN, BATTERY, negative, voltage value, BATTERY GROUND, voltage polarity

ADCP-80-524 • Issue 1 • November 2001

4.6General Wiring Recommendations

Route and connect ground, power, and alarm cables to the panel connectors according to local practice and the specified procedures. The connections to the fuse panel are shown in Figure 18. After routing the cables, tie them to the cable management bar (optional accessory). Replace the protective cover on the fuse panel after all the wiring connections are made and all tests are completed.

Caution: Connect both buses of the fuse panel to only –24 Vdc or –48 Vdc.

Caution: Connect only the input voltage wire [the wire labeled BATTERY or BATT, or labeled with the negative (–) voltage polarity and/or the voltage value] to the connector on the fuse panel labeled BATT (battery). Connect only the input return wire [the wire labeled RTN, RETURN, or BATTERY GROUND, or labeled with the positive (+) voltage polarity] to the connector on the fuse panel labeled RTN (return). If the wires are reversed, voltage could be present on the fuse panel chassis and current could flow through the unprotected return wiring in the fuse panel. This condition can cause damage to equipment in the frame in which the fuse panel is installed and to equipment in adjacent frames!

CONNECT OUTPUT

CONNECT OUTPUT

POWER TERMINALS

POWER TERMINALS

TO OUTPUT

CONNECT REMOTE

TO OUTPUT

POWER CIRCUITS

POWER CIRCUITS

ALARM TERMINALS

TO REMOTE ALARMS

CONNECT TO

OUTPUT

OUTPUT

CONNECT INPUT

CONNECTOR TO

POWER

POWER

BUS B BATTERY*

BUS A BATTERY*

CONNECTORS

CONNECTORS

CONNECT TO	OUTPUT		OUTPUT	CONNECT INPUT
	RETURN		RETURN
				CONNECTOR TO
BUS B RETURN**	CONNECTORS		CONNECTORS
				BUS A RETURN**
CONNECT OUTPUT			CONNECT OUTPUT
		CONNECT TO
RETURN TERMINALS			RETURN TERMINALS
TO OUTPUT		EQUIPMENT	TO OUTPUT
RETURN CIRCUITS		RACK	RETURN CIRCUITS

*NOTE: CONNECT INPUT VOLTAGE WIRE LABELED "BATTERY," "BATT," "NEGATIVE," "NEG," OR "-"

AND/OR THE VOLTAGE VALUE TO THE "BATT" CONNECTOR ("HOT" WIRE).

**NOTE: CONNECT INPUT RETURN WIRE LABELED "RTN," "RETURN," "BATTERY GROUND,"

"POSITIVE," "POS," OR "BATTERY GROUND" TO THE "RTN" CONNECTOR.

16159-A

Figure 18. Rear View of Type 70 Fuse Panel Cabling (Panel with Compression Lug Input

Connectors and Screw-Down Barrier Terminal Strip Output Connectors Shown)

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© 2001, ADC Telecommunications, Inc.